The central locking does not work with the alarm key fob

Incorrect operation of closing/opening doors makes up the bulk of problems with car alarms. Moreover, if on cars with the simplest configurations this is expected, since you have to assemble the central locking from scratch and configure all the drives (often of questionable quality), then on modern cars with a CAN bus the installer is not immune from problems arising in the future. Knowing the typical problems that arise with the central locking, the car owner can fix everything himself.

Problems with central locking in StarLine alarms when controlled from a key fob

Central locking with direct actuator control

If the alarm system recognizes commands from the key fob, then the central locking does not work. The classic installation on old or cheap cars is direct power control of actuators, which are installed together with the alarm system and controlled by power relays built into it. Each such actuator is a compact electric motor connected by a gear to a rack. Depending on the direction of the current in the motor winding, the rack moves in one direction or another, pushes or pulls the door lock button rod.

To control the central locking actuators, two relays with normally closed and normally open contacts are used. At rest, both outputs of the electric motor are connected to ground with normally closed contacts, no current flows, the wiring itself is safe, since it is not under voltage. When the alarm gives a pulse to open or close the door, one of the two relays switches the common contact to a normally open one, connected to a permanent positive through a fuse. Since each relay has its own fuse in the “plus” circuit, if the wiring is damaged (usually in places where it is pulled through the pillars into the door), one of two typical malfunctions occurs:

1. The wire is broken: one of the doors does not open or close, the rest work fine. More often, the wiring going into the driver's door suffers - here the likelihood of a fracture along a bend or an incorrectly routed wire being broken by a window regulator is greatest.
2. The wire is shorted to ground (on a sharp edge, by a window lift mechanism, etc.) - as soon as the command to open or close is given, the fuse in the circuit of this wire is knocked out. In this case, the second circuit operates normally, since it still requires ground on the damaged wire, regardless of where it comes from - from the relay contacts or through direct contact of the wire with ground. That is, if the doors suddenly stop working in one direction, for example, they do not open, but work in the other direction, closing, then you need to check the wiring, then change the 15-amp fuse in the harness of the 6-pin power connector of the central locking system connected to the alarm. In some cases, one of the fuses blows out without damaging the wiring if the movement of the actuator is difficult (locks freeze in winter), since the current consumed by the stopped motor is higher than when it is running.

Standard central locking without door lock button

If the car has a standard central lock, but there is no manual door lock/unlock button in the cabin, then the control element is an actuator (or, as is often the case in Korean cars, a switch) inside the driver's door.

In the version with a full-fledged actuator, most installers completely break the circuits connecting its winding to the standard central locking unit and power it from the built-in alarm relays. Problems with new wiring (breaks, short circuits) have the same symptoms as in the previous section. But if the driver’s door lock responds to commands from the key fob normally, and the other doors do not open/close, then the problem is hidden in the contact group of the door actuator (an additional group of two or three wires). The actuator will require replacement.

If the driver’s door does not have an actuator, then when installing the Starline alarm, it must be installed additionally. Diagnosing problems does not change the principle - if the central locking works only in one direction, one of the power wires is shorted to ground, if the central locking does not respond to both opening and closing, then there are two options:

1. Or there is a break.
2. Or the standard switch in the door lock is faulty.

Video: Alarm does not open doors Starline alarm

Standard central locking with door lock button

Often, a button is installed in the interior of a car that has a standard central locking system, with which the driver forcibly unlocks and locks the doors. In this case, when installing the Starline alarm system, low-current control of the central locking is implemented, which is much safer in terms of short circuits - control is carried out by shorting the signal wiring to ground through a current-limiting resistor built into the car's central locking control unit.

In the first version, the lock button has three contacts:

• one general;
• the second controls the opening of locks;
• third opening.

The relays built into the central alarm unit are connected accordingly - one simulates the “open locks” press, the second – “close the locks”.

If, on commands from the Starline key fob, the doors do not close or open, then this indicates problems connecting to the common wire of the built-in alarm relays - oxidized twist, wire break. If oxidation or a break occurs at the connection point of one of the signal wires, then the central locking will only either open or close the doors.

In the second option, the door lock button works pulsed, that is, it “hangs” on only one signal wire, one press locks the doors, the next unlocks them, and so on in a circle. In this case, the installer’s gross mistake during installation is to “parallelize” the unlocking and locking relays built into the alarm system, since the lack of control over the actual state of the doors can lead to “mirroring” of the algorithm.

For example, this happens due to one feature of StarLine alarms - if you try to arm the car with the door open, the alarm will give a locking impulse and repeat it as soon as the door slams. But if the alarm is installed incorrectly to the impulse button of the central locking, this will lead to the doors remaining open, and when disarmed, on the contrary, they will close.

Causes of problems and solutions to problems

Previously, only signs of malfunctions were considered. Now it is important to understand why they arise, who is to blame for this and what needs to be done in a given situation. Central locking failure is usually associated with:

• relay failure;
• wiring problems;
• battery;
• fuses;
• keychain;
• control device;
• actuator.

Considering the fact that there are many causes of malfunctions, each of them requires separate consideration. After all, the approach to repairing the central locking system directly depends on who was the culprit of the malfunctions. Motorists should be warned in advance. If you are not confident in your own strengths and capabilities, and do not have experience in repairing complex systems such as central locking, you should not try to repair the central locking system yourself. This is sometimes a complex procedure that requires appropriate qualifications and a clear understanding of the structure of the entire system.

Relay

A fairly common cause of malfunctions in the operation of the central locking system, when the car central locking does not open from the key fob, is the relay. Therefore, the motorist needs to check its current condition. You can do this yourself, since the procedure is not the most difficult. First you need to find the place where the relay is located. It may vary depending on the make and model of the vehicle. In some cars, the relay is installed together with other relays and fuses in a special block. But sometimes the element is located on the section of the electrical circuit that follows from the control unit. You can look at the instruction manual and find out exactly where the relay you are looking for is. Having found it, it is necessary to dismantle the device for further inspection. Checking is carried out with a multimeter. You can also disassemble the relay and check the condition of the board, which is located inside the case. If there are traces of burnt contacts, it will not be possible to restore the relay. It just needs to be changed. Experienced drivers and specialists recommend trying to close the electrical circuit directly after dismantling. If nothing has changed, all that remains is to simply throw out the old relay and put a new element in its place. It is inexpensive, but in a few minutes you can fully restore the operation of the central locking system. When choosing a new relay, it is recommended to take the old failed component with you. This will allow you to accurately select a similar device.

Wiring

Most often, electrical wiring suffers in the area that runs between the body and the door. It provides for the use of rubber corrugation, and wiring runs inside it. If it is damaged or interrupted by accident, or during active use, the central locking system will cease to function. When the circuit is open, due to the bending of the line, the contacts are closed, which allows the lock to function normally. Once it is closed, the contacts will open and the device will stop working. To solve the problem, it is recommended to follow a few simple rules.

1. Open the car door. While it is open, press the close button. To do this, a rod in the form of a screwdriver or other available material is inserted into the lock latch from the end side. If everything is fine with the wiring, after such manipulation the lock should work and try to close the door
2. Next you need to press the limit switch. He is in the doorway. This is necessary for the control module to record the fact that the device is closed.
3. The car's security system is turned on if it has an alarm system. In this case, the door locks must be closed. If the alarm determines that the locks are closed, the driver will receive a response in the form of a sound signal.
4. On the control panel, press the button to enable or disable the protection. If the door opens after pressing, pull the door handle, open the latch and slam it back. In a situation where the doors did not open, you should start looking for damage on the electrical line, that is, in the wiring.

Control of standard central locking via CAN bus

With this mechanism for controlling the standard central locking system, problems with connecting the Starline alarm system are eliminated automatically: if the twists are oxidized or the wire breaks, all functions associated with the CAN bus are unavailable at the same time. Therefore, if problems are observed specifically with the operation of the central locking system, it is worth checking the correctness of the settings of the CAN alarm module: if the firmware is incorrectly specified for a specific car model, the operation of the alarm system is often disrupted only in specific functions. This is due to the fact that some of the CAN commands, with the help of which the alarm system reads data about the state of the car and controls its electronics, can be the same on many cars, and some control commands will be individual.

First, find out the correct firmware number for your car. By specifying the brand and model in the search form on the website can.starline.ru, you will see this number at the very beginning of the list of functions supported by the firmware. For example, for a Ford C-Max the required number is 2319. Immediately look in the list of functions to see if central locking control is indicated there: if it is not supported, then the central locking is controlled from an alarm via analog circuits.

Something else useful for you:

Then we re-enter the firmware number into the memory of the CAN alarm module. In order not to remove the central unit, this is easiest to do with an assistant. After disconnecting the battery ground, find and hold down the service button (Valet) of the alarm. At this time, the assistant must put the terminal back on, restoring power to the alarm.

After the siren beeps 5 times, you need to release the Valet button. Starline will give 4 more signals, confirming entry into the programming mode.

Briefly press the service button again. In response, the alarm will give a single signal. After this, quickly press the button to enter the first digit of the firmware number and pause. As soon as the alarm confirms the entry, emitting exactly the same number of signals as the number of times the button was pressed, enter the second digit of the number in the same way, then the third and fourth. The main thing is not to be shortchanged: if you accidentally press the button more than 9 times, the alarm will return to the main programming menu, emitting 4 warning signals. In this case, start from the beginning of the paragraph.

A couple of seconds after successfully entering the last digit, StarLine will either confirm the result (two beeps) or report an error (four beeps). There will be an automatic return to the main menu. If everything is done correctly, but the alarm does not receive the correct number, then you should contact a service center to check and reflash the CAN module.

Video: Repairing the central lock. The car won't lock. What to do? What could be the reason?

The Starline alarm system is a reliable system that protects the car from theft, but at the same time, problems may arise with opening the doors using the key fob. They may be due to a simple decrease in battery charge or incorrect signal recognition by the system. But in some cases the situation is more serious and there are several ways to solve the problem.

What to do if Starline does not open or close doors using the key fob

Faced with a situation where the control panel is unable to open or close the vehicle doors, despite the fact that the key fob display displays various error codes or incomprehensible messages, the first thing the car owner should pay attention to is the correct installation and configuration of the anti-theft system. First check all electrical circuits and reset all settings to factory settings.

If even after these steps it was not possible to correct the situation, then you should refer to the instructions and study the various options for breakdowns.

Automatic door lock control

Automatic control of door locks allows alarm systems, for example, Starline B9, after the necessary settings, to unlock and lock them after pressing the pedal or waiting for a certain time. If it does not work, despite all the settings being correct, and the doors stop closing, then most likely the problem lies in the limit switches or the fact that the electric drive is connected to the lamp. The first is evidenced by the situation when the system beeps when trying to close the doors.

In the case of Starline B9, the problem may lie in the fact that a drive model other than Sl 2 2 X is installed. In this case, a complete replacement of the wire with the correct modification is required.

StarLine alarm with auto start does not lock or open doors

Many models of alarms from Starline can boast of having automatic engine start. This applies to such popular complexes as A93, E93, A9, A94, B94 and A91. In the case of such systems, problems with closing doors may have a specific origin. The main breakdowns that a car owner has to deal with:

• poor connection of the central ignition lock;
• Closing the seat belt plug on the driver's side.

The second type of problem is easy to identify, because it simulates an opening and the key fob shows the door open, although the car is closed. The breakdown is corrected by repairing the chains responsible for the belt.

If the door does not close when the engine is running, then the problem is most likely in the end contacts. This is indicated by a beeping sound and intermittent lighting of the diodes. As a result of this breakdown, the engine stalls without starting. You can get them to work by replacing them with new ones. They also check if there are any problems with the firmware.

The door open button does not work

Sticking of the door opening and locking button, especially in the Starline A39 and A6 anti-theft systems, most often occurs due to problems with the central ignition lock. In such cases, car owners usually have to deal with oxidation of the wires leading to the central signaling unit or their breakage. The only way to fix the situation is to install a new wire.

The button often does not work after replacing batteries. In this case, you just need reprogramming. For this:

• turn off the ignition if it is working;
• find and press the Jack key seven times;
• turn the ignition back on;
• wait for seven beeps;
• press the second and third buttons on the remote control at the same time, to which it responds with a beeping sound;
• turn on the ignition again.

After this, the door opening function is programmed in accordance with the table in the user manual.

The Starline alarm does not close the doors using the key fob, but it works when opening them

Owners of cars equipped with the Starline A61 security model are sometimes faced with a situation where the system refuses to close the door with the key fob, but opens it. Typically, a similar situation occurs after a mechanical impact on the door, for example, a blow. In this regard, damage to the connection circuits occurs, due to which communication with the limit switches begins to work incorrectly. The only way to repair is to replace damaged wires.

StarLine alarm opens and immediately closes doors

A malfunction that owners of a Hyundai Solaris vehicle most often encounter. It is associated with the peculiarities of connecting the circuits to the central locking, as a result of which the correct operation of the locking sensor is affected by a special seat belt plug. The problem is equally common when using Starline A63, A91 and A92 signaling devices. For proper operation of the system, the seat belt cover must be removed.

Incorrect installation of the system

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When installing an alarm system, problems with errors may arise as a result of violations of installation rules. Many specialized centers install the system in a matter of hours, limiting themselves to disassembling the dashboard, one of the thresholds and the glove compartment.

After installation, it is discovered that a web of wires has formed under the steering wheel. Wound with regular electrical tape. The main symptoms of improper installation are:

• Interference during arming.
• The presence of an inscription about blocking on the key fob when asking about the status. It should disappear immediately after arming the car, simultaneously with turning off the engine.

Interference at the frequency of the key fob, as a result of improper installation, prevents the door from opening, so you need to press the Valet button, open the car and turn off the system manually.

In this case, it is necessary to check the installation route of the communication module cable. It may not be laid separately, as required by the installation technique, but rather wrapped in a tangle of other alarm wires. A complete disassembly of the dashboard and review of the installation of the entire system will help to detect other problems.

Incorrect alarm installation

Often the Starline A9 signaling system does not close the doors with the key fob because the kit itself was not installed correctly.

• A transceiver with a radio antenna was placed next to metal components of the car body or next to electrical appliances. As a result, interference occurs along the signal transmission path;
• The harness from the Starline central module was intertwined with other wires (contrary to the recommended correct installation technique).

Move the transceiver, untangle the wires and lay the central module cable separately.

Broken wire problem

In the transition between the body and the door, in the place where the rubber corrugation is located, the wire responsible for opening and closing the door may be broken. In the open state, due to the bending of the wiring, the contact can function normally, and when closed, the wire opens. You can check this problem as follows:

• Leave the door open and latch it by inserting a screwdriver or any other rod into the lock latch at the end. The effect should be the same as when closing the door on a bracket mounted on the rack.
• Press the limit switch in the door opening so that the electronic systems recognize the closing.
• Security the car. All locks must be locked, and the alarm system will notify you of this with a single sound signal.
• Press the key fob to open/disarm.

If the opening has taken place, then you need to pull the handle on the door to open the latch and slam it, repeating the whole process again. If the locks do not open after this, then the problem lies in the breakdown of the wire responsible for unlocking.

How to troubleshoot

To restore the ability of the key fob to issue commands, and the alarm carried them out unquestioningly, you need to take one of the following troubleshooting methods:

Replace the battery

Removing the key fob cover, taking out the old battery and inserting a new one will probably not pose a big problem for any driver. Perhaps the remote control will immediately work as usual after this.

@drive2.ru

Run circuit diagnostics

If the first method does not work, move on to a more serious step: carefully inspect the electrical wires. You may notice a broken wire and replace it so as not to have to worry about blocking the doors in the future.

Tie the keychain

If you managed to turn off the alarm by pressing the key fob button, but the doors remained closed, you will have to reprogram the remote control itself and additional control systems. Each car model has its own rules for disabling registered key fobs and entering new data into their memory.

To perform flashing, you also need to know the model of the security device installed in the car.

If you cannot resolve the problem on your own, you will have to meet with specialists. Alarm technicians will figure out the cause of alarm failures and fix it themselves.

Problems with the central locking

The central locking is the most vulnerable component of the Starline alarm system when controlled from a key fob. The problem is most often detected when the car is idle for more than 1 minute in security mode. The solution is simple, but inconvenient - you need to use a standard key fob to open the doors, or quickly press the open/close buttons. At the same time, when the car automatically starts, disarming occurs in normal mode.

The problem is caused by the fact that the default key fob is not designed to work when the car is running. Arming and disarming occurs correctly, but the central locks do not work. Channel No. 4 is responsible for opening the central lock, allowing you to flexibly adjust the operation of the function. To solve the problem, you need to configure 2 pulses, one of which is responsible for waking up the bus, and the other for opening the doors. This helps to set the central locking to unlock with just one press of a button. However, this action does not apply to opening the central trunk lock.

How to get into a car if the key fob doesn't work

In this case, there is only one way out - use a key. But keep in mind that problems are observed only with the central locking, and the alarm, as a rule, continues to function as usual. Therefore, when you try to insert the key into the lock, the car will definitely create a cacophony.

The alarm can only be silenced using the service button by turning off the alarm manually. Look for the life-saving switch behind the instrument panel. Although, in principle, it can be located in another place. Please read the instructions in advance to be prepared for such unforeseen circumstances.

It may happen that the key will only be able to open one door. But it's better than nothing. You can leave, but just be sure to try to return the central locking to its previous working condition.

Problem with opening doors after autostart

After using the autostart function, the Starline alarm system can block the automatic opening of doors even if the system is disarmed. In this situation, you have to use the key and open the car manually. The problem may be caused by incorrect connection to the central locking control circuits during installation. To solve, it is necessary to reconnect 2 alarm wires responsible for controlling the lock, provided that there are no problems with the circuits responsible for the operation of the seat belt. If the seat belt cover in the driver's seat is closed, the doors will not open.

It is also necessary to take into account the indicators on the key fob - unlocked/closed lock. This indication indicates arming or disarming, but not unlocking or locking the door.

None of the alarm systems, including Starline, have the ability to control the process of opening and closing the central lock and simultaneously display the operation on the lock screen.

Why won't only the driver's door lock with the central locking?

Often, during the operation of a car, situations arise when the car cannot be unlocked. Sometimes there are opposite moments when it is not possible to lock the lock even with the ignition on. Typically, these problems arise due to sudden changes in temperature and high humidity.

Most often, the driver's side of the car may not open due to improper installation or adjustment of the device. In addition, the problem may be hidden in one of the door elements.

Central locks are either electric or pneumatic. In both cases, the main drive is located under the door trim on the driver's side. To determine the source of the problem, you need to remove it.

In addition, breakdowns here may relate to weak remote control batteries, fuses, oxidation of contacts or broken wiring, wear of the limit switch, malfunction of the alarm system, failure of the fastening rod from the drive to the locking mechanism.

Problems after replacing the battery

After replacing the battery, the doors may not lock, but the key fob will show a signal that the car has been successfully locked. In this case, you need to pay attention to the option of decoupling the key fob. In order to bind it back you need to:

• Turn off the ignition and press the Valet service button 7 times.
• Turn on the ignition. After this, the system will emit 7 signals, which indicates that the Starline key fob recording mode has been activated.
• Simultaneously press buttons 2 and 3 and hold until a signal notifies you of successful recording.
• Repeat the previous step for all recordable key fobs. Wherein. You must maintain an interval of 5 seconds. The success of the operation is confirmed by a signal.
• Turn off the ignition. This will be followed by the parking lights flashing five times, indicating that the binding is complete.

The problem of unlocking the doors after replacing the battery may be due to other reasons. Firstly, the central locking connector to which the alarm unit is connected may be damaged. Secondly, the fuse on the alarm wire may burn out or the connection to the car's wiring may break.

Fixing the problem

Even a short-term loss of power to the microcircuit inside the key fob can lead to synchronization disturbances in the operation of the entire central locking unit. This will require new firmware for the remote control. This requires the intervention of specialists and a special training key. On the other hand, you can try to solve the problem on your own.

What can be done on site

You can restore synchronization as follows:

• turn on the ignition using a key that requires restoration;
• wait at least 6 seconds;
• turn off the ignition after the immobilizer stops flashing.

After 10 seconds, use the same key to start the car. An indicator of a solution to the problem will be an extinguished immobilizer indicator.

If the central locking system malfunctions, the key fob is in good working order, then you can try replacing the system fuse and loosening the screw on the key fob.

In various situations, it is important to choose the right solution to the problem:

1. The car does not lock in the cold. In such cases, you can use a hairdryer to warm up, dry the lock, and lubricate it with non-aggressive penetrating compounds such as WD-40. In some cases, it is necessary to disassemble the mechanism and replace worn parts.
2. It is impossible to lock the car. This may be due to sagging doors or the lock being displaced after an accident. This requires mechanical adjustment using bolts.
3. The door doesn't close all the way. This problem can arise due to the lock freezing, a violation of the geometry of the hinges, or the rack. Under such circumstances, you can even out the deformations, set the required gaps, clean and lubricate the lock.

Features of electric lock repair

This may require replacing the relay, coil, actuator gear, restoring a separate contact, or repairing the electrical wiring. If the break point cannot be found, then you need to check the limit switch.

In addition, you should check the solenoids, since these elements can fail due to sudden temperature changes and high humidity.

Problems with locking the car with the key fob

The Starline alarm system may have problems locking the car. At the same time, the warning system operates normally, but the doors remain open. The reason may be a simple disconnection of the plug under the driver's seat.

Therefore, the alarm system cannot recognize the signal from the limit switch about the door opening, which entails the automatic installation of the car in the security mode within 30 seconds. The fuses on the contacts in the alarm unit may also be damaged, preventing the signal from being sent. Diagnosis and solution to this problem can be achieved in the following ways:

• Without removing the key from the ignition switch, you must open the driver's door and then remove the key. Then slam the door and put it in security mode.
• Disconnect and reconnect the negative terminal from the battery.
• Pull the handbrake, remove the key, open the driver's door, press the central locking button to close all other doors, close the driver's door and press the lock button on the key fob.

If after these manipulations the problem is not solved, then you need to contact the Starline service center for advice and a possible replacement of the system during warranty service.

Abnormal opening/closing of doors

In some cases, the alarm is triggered when the door is closed. In this case, the key fob may display information that the door is open. When you close it again and press the corresponding button on the key fob, the car immediately opens and the alarm goes off.

The problem is caused not so much by the system itself, but by the adjustment of the driver's door actuator. It cannot reach the standard traction, and the limit switch does not allow the central locking to open the doors. In this case, there are 2 options:

• Remove the driver's side door trim and adjust the actuator on the rod.
• Replace the two-wire activator with a similar system, but consisting of five wires. After this, you need to give him control of the central locking from the standard key fob. It is worth noting that this method is the most effective.
• After the car has been idle for a long time and the security system has been disarmed, a problem may arise when the doors automatically close immediately. The problem is solved after pressing the open button a second time.

In addition, the wiring insulation may be damaged and the fuse on the green and blue wires in the central locking connector may have burned out. The presence of a short to ground contributes to the spontaneous opening and closing of doors. The problem may also lie in the equipment being in service mode. In this case, the shock sensor will not work. In this case, the key fob will notify you of a malfunction with a signal displaying a wrench. This icon is selected by button 3 and disabled by button 2.

Central locking is an indispensable attribute of a modern car. Many car enthusiasts practically do not use a mechanical lock to open doors.

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For this reason, mechanical lock cylinders, due to corrosion and diffusion processes, literally get stuck to the lock structure, and if the central locking system malfunctions, the battery is low, the key fob or car alarm malfunctions, access to the car interior may be limited.

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Causes of alarm problems when opening or closing from the key fob and their elimination

Let's look at the main reasons why Starline does not open the door lock from the remote control:

• manufacturing defects;
• dead battery in the car;
• incorrect installation;
• malfunctions that occurred in the central locking;
• mechanical damage to any of the wires.

Let's say the Starline car alarm does not close the door lock when the engine is running. The first thing a car owner should do is put new batteries in the key fob. And the reason why the key fob mechanism stops functioning will be found. If the signal remains unresponsive, you will need to contact specialists for flashing or personally reboot the program. Details about reprogramming are described in the system instructions. The machine is locked until the cause is eliminated using the key.

Problems with the key fob

After replacing the batteries with new ones, you need to evaluate the appearance of the key fob to identify the presence of any damage.

If the car alarm refuses to work further, it means there is a problem with the remote control:

• the plug located under the driver's seat has become disconnected (just connect it back);
• The special sensor is broken.

If problems arise within the key fob itself, the display (if present) will be turned off, and can also display the status in normal (working) mode or show symbols (r99, zzz, check). To solve the problem, diagnostics will be required. Specialists will troubleshoot the device or recommend replacing it.

Car battery is dead

In a situation where the alarm does not go off and the car does not start, it can be argued that the reason is a dead car battery. It is solved by charging it. In half of the cases, you will need to reset the settings on the key fob and reprogram it again according to the instructions.

Incorrect installation of the system

If the alarm does not block or open the door locks, displaying extraneous messages on the display, it is important to ensure that the system is installed correctly. Such problems are associated with inaccurate installation when the module cable is intertwined with wires. To solve the problem, we check the electrical circuits and correct them if necessary.

One of the problems due to which the car doors do not close when arming is described in the video. Taken from the channel RewievBroz34.

The wire responsible for opening and closing the door is broken

Sometimes it happens that one door opens and closes or the central lock does not respond to the remote control command. In this case, we check the contacts - damage has occurred somewhere. To clarify the breakdown, the correctness of the wire routing is assessed. We start from the left side - first we inspect the transition between the body and the doors, then the area where the power windows are located. The broken wire will need to be replaced with a new one.

Problems with the central locking

If the door lock button freezes, then there is a problem with the central locking. Apparently, there was a break or oxidation of the wire in the place where the central contacts are connected. Let's say the lock does not turn on, therefore, this is a violation of the ground connection of the car alarm relay wire.

Problems after replacing the battery

If, after replacing the battery, when arming the car, the display shows the activation mode, and the door lock does not lock the car, you need to reprogram the remote control.

To solve the problem, just do the following:

1. Turn off the ignition.
2. Press the Valet button 7 times in a row.
3. We start the engine.
4. We count the sound signals. There should be 7 of them.
5. Press keys 2 and 3 at the same time (the device beeps).
6. Turn off the ignition. The dimensions will flash 5 times.

Spare key fobs must be reprogrammed in the same way with an interval of at least 5 seconds.

Other reasons

Among other reasons why the door opening/closing function does not work, the following should be highlighted:

1. A failure may occur when arming the alarm with the door open. In this case, upon subsequent locking, the doors will remain open, and upon disarming, they will be locked. You can solve the problem by reprogramming the key fob, but you should also check whether the wires were connected correctly.
2. Incorrect connection of wires can cause paralleling of actions, when pressing the buttons on the key fob alternately opens/closes the central lock.
3. If the automatic start led to the door lock being blocked, you need to reinstall the alarm in the car, because somewhere the wires were connected incorrectly.
4. If the pager appears to be working properly, but the display does not show what the problem is, you need to rule out the presence of radio interference.

The following proximity indicates the possibility of a radio wave transmission failure:

• airport;
• large concentration of vehicles;
• secret objects;
• some enterprises (large companies);
• bus stations.

Signs of a central locking malfunction

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The main symptoms of a central locking malfunction correspond exactly to their manifestation:

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• The driver's door does not open with the key fob or key;

• The driver's door does not close with the key fob, key or button;

• opening and closing one of the doors does not work;

• central locking closes and immediately opens the doors;

• The locking is triggered spontaneously and the doors open.

In one expression, all of the listed malfunctions can be called “incorrect operation of the central locking system.”

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The central locking system belongs to the category of complex electronic systems of a car; troubleshooting its faults is quite complicated, so soberly and carefully assess your ability to independently eliminate such a fault.

Video - the central locking in LADA KALINA stopped working, searching for the reason:

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Let's sum it up

As you can see, if the lock on the doors of a car does not work, there can be many reasons. However, taking into account the above information, it becomes clear that knowledge of the general structure and operating principle of vacuum and electric central locks allows you to quickly localize the problem for accurate diagnosis and high-quality elimination of potential faults. It is important to consider what type of locking system is on the car, and also to know the typical breakdown of locks of one or another type.

We also recommend reading the article on how to connect USB to an old radio. From this article you will learn about available ways to upgrade old head units to be able to listen to music from a flash drive, via AUX, etc.

Finally, we note that when installing a central lock in a car, it is advisable to take into account all the installation features, as well as responsibly approach the selection of all system components. The fact is that today there are a large number of similar solutions on the market, but not all central locks are distinguished by quality and durability.

This means that it is important to purchase a device that has reliable components and install it correctly. Only this approach will allow you to obtain long and trouble-free operation of the central locking system.

How the system works

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The central locking system includes the following main blocks and components:

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• central electronic unit;

• driver's door electronic unit (can be combined with the central unit);

• electronic units for driver, passenger and rear doors (may be missing);

• push-button switches for driver, passenger and rear doors;

• limit switches for closing windows and doors;

• control units and window lift drives.

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In most car models, the power window and central locking control units are connected into a single system. When closing the doors, the central locking system must poll the limit switches of all windows so as not to accidentally park the car and guard it with the windows open. Therefore, the failure to close the doors is often associated with a malfunction of the window regulator controls.

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For a 2005 VW Passat, the electrical circuit for the central locking looks like this:

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1. Drive, buttons and limit switches of the passenger door (hereinafter referred to as Dv);
2. Passenger engine control unit;
3. Window lifter control unit and rear left drive;
4. Rear left drive motor, switches;
5. Driver's switch;
6. Driver's driver's side switches;
7. Driver's control unit, internal;
8. Control unit for rear right door and window lifter;
9. Multifunctional control unit.
10. Blocker.
11. Central locking drive rear right motor
12. Window lifter switches and buttons.
13. Fuses serving the central locking system.

The main causes of central locking malfunction

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The main causes of malfunction of the central electronic locking system are:

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• malfunction of electrical wiring, especially in places of corrugated hoses and connectors for entering the motor (up to a quarter of all failures);

• improper adjustment and operation of limit switches, power windows, window regulators;

• incorrect adjustment or wear of the closing mechanism of the motor, wear of the suspension of the motor;

• damage to rods and plastic tips;

• malfunction of the door lock drive;

• malfunction of power window drives;

• failure of the engine control buttons;

• malfunction of the power window control buttons;

• blown fuses;

• malfunction of the electronic control units included in the central locking system.

In modern cars, they try to structurally combine electronic door controls into a single whole with drives, limit switches and control buttons.

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With the combined option, the probability of failure of the central locking system is reduced significantly. This reduces repair and maintenance time. To carry out repairs, for example, the driver's door, a unit replacement (entirely) of just one central drive with a control unit and limit switches is required. This, of course, negatively affects the cost of repairs.

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Independent circuit repair of the central locking system without the appropriate experience and knowledge is almost impossible. However, some typical faults can be eliminated if they are not related to damage to the electrical wiring.

If the central locking from the key fob does not work: troubleshooting sequence

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Any repair or troubleshooting in a car must begin with checking the fuses that serve a specific system. There are three of them in the diagram below. Usually it can be more. You need to find their location using the car's instruction manual or searching on the Internet.

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Video - if the central locking does not work from the alarm, then first check the fuses:

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If all fuses are in good working order, proceed to determining the location of the malfunction based on its characteristic symptoms.

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Central locking does not close the doors

There are several options for central locking:

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• does not respond to the key fob signal at all, in this case it is necessary to check, or better yet, immediately change the key fob battery;

• does not close the door even with the lock key;

• closes and immediately opens the doors.

The last option is associated with loose closure of windows or doors. It is necessary to try to press each door sequentially, supporting it with your whole body, and at the moment of pressing, try to close the central locking.

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Perhaps a foreign object has gotten into the closing area of ​​a door; it needs to be checked. You should also check the pressure of the glass so that it fits tightly into the upper grooves.

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If the central lock does not respond to the key fob and key, the wires may have broken in the area of ​​the corrugation entering the door. If you have experience repairing electrical wiring, you can find the faulty wire and connect it.

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The central locking system does not open the doors, but at the same time closes them

One option is to shift the door hanger. The lock is locked with a door latch. This type of malfunction often occurs in the trunk doors. You have to press them manually to wedge the movement of the lock drive. When you try to open the door, you should hear a click from the drive. In some cars it is almost inaudible; you have to put your ear to the door.

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Central locking only closes the driver's door

Here, most likely, the malfunction is a breakdown in communication from the driver's door control unit to the central unit or other doors. You should remove the corrugated hose from the wiring transition from the driver's door to the car interior - there will be a break there.

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In some car models, there is a connecting connector at the junction of the wiring into the car interior; you can check its contacts. It is also necessary to examine the electrical wiring under the door trim and all connectors.

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One of the doors does not open

Possible malfunctions: damage to the electrical wiring in the corrugation or on the way to it in the cabin, malfunction of the lock drive.

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Video - the central locking of the driver's door on a Skoda Fabia does not work:

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The lock drive is easy to replace and is inexpensive. During replacement, the main thing is not to damage the levers, rods and plastic tips.

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If you replace the central locking drive yourself, to be sure, it is better to find a mechanical diagram on the Internet, reference books, or instruction manual so that you do not forget to install any part.

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Types of faults

There are a lot of situations and cases when central locks on cars do not work. But it is important to understand exactly what happened and how the malfunction manifests itself. Mostly malfunctions manifest themselves in the form of a refusal to respond to certain commands. Sometimes the system opens completely. Mostly motorists are faced with the following situations:

• the castle behaves unstable;
• partial failure is observed;
• The central locking system does not respond to commands from the key fob;
• the system does not respond to commands from the key.

Each of the presented situations requires separate consideration.

Unstable work

There are cases when the central locks on cars have not stopped working, but their behavior and functioning can be described as unstable. That is, they can work normally when commands are given, but at some point give out unexpected surprises. Basically, instability at work manifests itself as follows:

• When the driver presses the key fob button, incorrect operation of the control unit or module is observed. The block either reacts to commands or completely ignores them and does not execute them. One time everything functions perfectly, no problems arise, but the next time there are failures. When sending commands to the central locking from the remote control, they may or may not be executed;
• When trying to open the door locks, at first the system opens them normally, but after a while it spontaneously locks them again. Although the driver did not give such a command. Locks can behave similarly when receiving a closing command. The doors lock and then unblock themselves;
• When the driver presses the button to open the doors, the control device closes them. And when you try to close the door, the opposite situation occurs, that is, the doors open;
• After pressing the open or close button, only part of the car doors carries out the command. One or more doors do not respond to signals, or perform actions opposite to the command.

It is obvious here that the central locking system really behaves unstable. Situations like this don't happen so rarely. But specialists will be able to find the cause and also help in restoring normal performance. Some car owners cope with the situation on their own.

https://www.youtube.com/watch?v=QwQIcpG2_iY

Partial failure

Here we are talking about situations when the central locks do not close, although it is possible to open the vehicle doors using a key or key fob. Here we are also talking about the fact that the central locking does not work, but this occurs in the form of a partial failure. If the driver tries to close the doors with the button, he will not succeed. Then you can close them mechanically, that is, by pressing the corresponding buttons from inside the cabin. After this, the key fob will normally unlock the doors, but will no longer be able to close them back. Such a malfunction indicates that the central locking system has partially failed. Here the problem should mainly be found in the electronics of the system.

General recommendations

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Periodically open the door with the key, even if you always use the central locking key fob, so that the door lock mechanism does not get stuck.

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Do not try to warm the lock with hot water if it is frozen in winter. It's better to try an electric hair dryer. Commercial liquids for freezing at low temperatures do not always help.

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Tighten the door suspension, if it wobbles, this can lead to jamming of the lock and blown fuse for its power supply.

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It happens that the immobilizer does not see the key, what to do in such situations.

How can you determine which alarm system is used in a car using a key fob?

If the car windows sweat from the inside https://voditeliauto.ru/sovety-voditelej/zapotevayut-stekla-v-mashine-iznutri-chto-delat.html what to do in this case and what folk remedies can be used.

Video - repairing the central locking on a Hyundai Getz:

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