All ways to turn off the alarm in a car without a key fob

Anti-theft systems have become a part of our lives. Currently, it is difficult to imagine any modern car that is devoid of this useful option. From year to year, manufacturers of the presented systems offer motorists more and more new developments that are strikingly different from their previous analogues.

Having undergone dramatic changes, car security systems become virtually invulnerable to lovers of easy money. But, at the same time, with the advent of such new products on the automotive market, motorists sometimes face a number of problems regarding the use of such protective equipment.

For example, situations arise when the anti-theft system fails and it becomes necessary to disable it without the key fob. This article is devoted to this problem.

Causes of breakdowns

A car alarm may fail due to:

• Presence of radio interference. Such situations arise in large cities and megalopolises, where a large number of cars and other electronic devices accumulate. Intensely emitted radio waves can cancel out and interfere with each other. To solve the problem, you just need to come close to the car - and its sensor will recognize the signal from the “native” key fob.
• Damage to the control panel. If the key fob has been dropped, been hit hard, gotten wet, or its battery has simply run out, it may not work. To check the condition of the battery, just press the button and watch the indicator light glow.
• Car battery discharge. If the battery is dead, the electronics are left without power. Accordingly, the alarm system will not respond to commands from the control panel. You can open the car door with a key. But the alarm will go off. To avoid this, open the hood and remove the “-” terminal from the battery.

These and similar problems can be solved in various ways. At the same time, options are available with and without a key fob. Let's look at each effective method.

How to remove the alarm from a car completely

Reasons that force one to resort to such extreme measures:

• inoperability or poor operation of the alarm without the possibility of correction - may occur after any repair work;
• installation of a new alarm system - often carried out when purchasing an expensive car with a pre-installed old emergency warning light;
• desire to improve the functionality of the security system;
• wear and tear of the device in a moral and technical sense.

Dismantling an alarm system is a technically quite complex process, especially if it is a two-way alarm system combined with an immobilizer, satellite channel, and sensors. Even some specialized workshops refuse such work or only accept high prices. Therefore, many turn to the people who actually installed the system for this. But what to do if a person’s contacts are lost? In this case, you have to work with your own hands.

If you show patience, be extremely careful, and carefully carry out dismantling and installation manipulations, independent removal of the equipment will be successful. Danger of incorrect dismantling: wiring fire, engine blocking, electrical failure, central locking failure.

Here is the minimum set of tools you will need for your work:

• insulating tape;
• wire cutters;
• set of screwdrivers;
• stationery knife with replaceable blades;
• autonomous light source - LED or mobile;
• soldering iron

If you do not have the skills to work with a soldering iron, you can connect the wires by twisting, insulating the contacts with heat shrink. Below is the sequence of work. Before doing this, you need to turn off the ignition and disconnect the terminals from the battery.

1. Pull out the central block. As a rule, it is located under the dashboard, in the driver's area. Or it may be hidden under the upholstery. In this case, its location will be revealed by the wires laid to the device;
2. Find all the individual signaling elements using the cables coming from the unit and dismantle them. We are talking about the Valet button, sensors, relays, antenna module, siren. Elements mounted on plastic clamps are cut off with wire cutters. Screwdrivers are used to remove self-tapping fasteners;
3. Sequentially disconnect electrical connections directly from the unit. After disconnecting the wires, the places must be insulated;
4. Find and disconnect blocking points, fuses, relays. This is the most critical phase of the work, complicated by the search for interrupt contacts and blocking points. It requires a thorough study of the car alarm circuit. After disconnecting the wires from the relay, the contacts must be restored - twisted and soldered. If the relay is connected via CAN, then the task is simplified - just disconnect the connector;
5. Remove all non-standard wiring from the head unit to the doors, trunk and hood. The work will take a lot of time, but it will be worth it. Again, if there is a CAN bus, the process is greatly simplified.

As a rule, a car alarm has 2 or 4 locks. However, only some of them can be organized through a relay.

It remains to check the quality of the work done:

• connect the battery;
• wait a little, check for a burning smell in the cabin;
• check if the fuses have been blown out;
• pay special attention to the operation of the central lock;
• start the engine, check again for odors;
• Carry out a test drive with the turn signals and side lights turned on.

If all vehicle systems are operating normally in normal mode, the process of completely removing the alarm from the car can be considered completed.

Turn off the alarm when there is no key fob

If the “signaling” control panel turns out to be inoperative or useless, to “bypass” it you need to know the location of the Valet button. It switches the alarm to service mode. If the “alarm” is not calmed down, then reliable protection of the machine is maintained.

Where is the Valet button located? It is impossible to answer this question unequivocally. Car manufacturers and technicians specifically install it so that an unknowing user cannot quickly turn off the alarm. This increases the safety of operating the car, because possible theft becomes more difficult. TOP Valet button locations:

• Fuse box.
• Bottom of the dashboard.
• Pedal area.
• Glove compartment area.
• Steering column area, etc.

The guideline when searching for the treasured button is the location of the LED indicator - they are located not far from each other. The location of Valet is indicated in the car’s user manual, in the “signaling” manual. And if you are buying a used car, then check this point with its owner to avoid a grueling search.

Jack button

How to turn your car alarm back on

The option to turn on the alarm directly depends on how you turned it off. If the battery has been de-energized, you need to return the negative terminal back and wait a couple of minutes. If you pulled the wires out of the alarm unit, you need to put them back and wait 20 seconds for the system to boot. If you turned off the car alarm using the Valet button, then you should definitely look at the instructions for the device, where this issue is discussed in detail.

Restoring the functionality of the car alarm using the Valet button is carried out as follows:

• Re-enter the PIN code. Insert the key into the ignition and turn it, press the Valet button on the first number, then turn off the ignition. Repeat the previous step to enter the remaining numbers.
• Pressing the emergency button. Insert the key into the ignition, turn it, and then immediately hold down the button for 5-15 seconds (the duration depends on the brand of car alarm).
• Using the menu. Turn on the engine, and after 10 seconds turn it off. On the control panel, simultaneously hold down the speaker and lock buttons for 5-10 seconds.

If you did everything correctly, a sound and/or light signal is activated (depending on the signaling model).

Disabling the car alarm

Not entirely loyal, but effective, is to cut the cable directed to the external speaker. True, modern protection systems are multi-stage. And this method does not always help. But you can try it. An alternative solution is to find a fuse relay for power supply and control of the “signal”. It can be neutralized with wire cutters or simply pulled out by hand. But relays and fuses are often wireless and “hidden” in the most unexpected places. Therefore, their search may take a couple of hours.

Independent troubleshooting of alarm systems

There are 3 options for solving the blocking problem:

• Trying to find blown fuses is the main cause of alarm failure. If a non-working element is found, it must be replaced;
• Malfunctions in the operation of the protective system can be caused by a low battery charge or improperly secured terminals on its contacts. Then the battery will not crank the starter well, and the engine lock will be triggered in advance and then prevent the engine from starting. If there is not enough battery charge, a protective mechanism is activated. This prevents the engine from starting due to a lack of voltage or power in the vehicle's electrical circuit;
• check the system limit switches - they are located under the hood and trunk lid. If moisture gets on the element and it oxidizes, the signal does not pass to the control unit. As a result, the protection is not disabled. Also among the causative factors are incorrect installation of switches, incorrect cleaning of the engine and other interference.

How to disable Alligator

Another popular auto protection system is “ALLIGATOR D-810”. It can be disabled as follows:

1. Enable function No. 9 (see the manual).
2. Open the car interior with the key.
3. Turn on the ignition.
4. Press the Valet button.
5. Turn off the ignition.

After performing these actions, the “signaling” will be neutralized, but will not be transferred to service mode. Therefore, it is necessary to deactivate it in accordance with the manual before closing and locking all doors.

Engine blocking with car alarm

The system blocks the engine for one of the following reasons:

• incorrect wiring connection;
• The immobilizer bypass does not function (variants with automatic start);
• the relay acting on the starter is broken;
• software glitch;
• there is not enough voltage in the control panel;
• no signal via CAN bus.

The described reasons lead to the fact that the alarm removes the protection, but does not allow the engine to start, blocking it.

Separately, it is worth highlighting the lack of voltage in the key fob - this failure is also taken into account. Because due to lack of energy, the signal is distorted or not completely transmitted to the system control unit. As a result, the alarm does not remove the blocking from the engine.

Signs of lack of voltage on the control key fob:

• flashing of the indicator in a special mode;
• notification of a closed lock on the key fob after the security has been cancelled;
• sound signal;
• activation of light lamps;
• alarm buttons operate in abnormal mode;
• The central bank does not respond to control panel signals.

In case of problems with the security system, the batteries on the key fob should be replaced. If it does not help, then you will have to delve into the study of the alarm system and understand why it blocks the engine.

Accidental activation of the engine lock function

First you need to study the graphic images on the alarm control key fob. Often the function is activated by accidental pressing. It is also worth looking at the LED indicator inside the car (if equipped) - it displays the status of the system. If the lamp flashes, then the problem is the current immobilizer function.

If the indicator is flashing and the “immo” inscription is on the key fob, then you will need:

• remove the key from the lock, open the central door lock via the control panel;
• get out of the car, start the security mode, disarm the alarm and restart the engine.

In case of accidental activation, check that the system is operating in standard mode and that no settings have been changed. In 35% of cases, the engine is blocked because the owner accidentally pressed the button on the key fob. After disabling additional features, the problem will be resolved.

For example, the StarLine alarm systems provide a step-by-step system for unlocking. If activated accidentally, the indicator will light up on the screen. To disable the lock, you will need to press and hold key 3. The key fob will beep twice, then you need to press button 3 again, then 1. Only after this manipulation will the security system be deactivated and the lock will be removed.

How to disable Leopard

The most common versions of auto protection are “LEOPARD LS 90/10 EC” and “LEOPARD LR435”. The algorithms for disabling them are similar to Sherkhan. It is also possible to use a personal code. In this case, you should perform a number of actions:

1. Open the car with the key.
2. Sit in it.
3. Turn on the ignition.
4. Press Valet as many times as indicated by the first digit of the code.
5. Turn off the ignition.
6. Turn on the ignition.
7. Press Valet as many times as indicated by the second digit of the code, etc.

The main reasons for blocking the engine with an alarm

For those car enthusiasts who are well versed in the electrical part, the task of determining the causes of the failure is greatly simplified.

The most likely causes of security alarm failures are:

• blown fuses that supply power to the car alarm. This check should be performed first;
• Even more often, problems arise due to a discharged battery. Usually the battery still shows signs of life (the sound signal works, the headlights light up), but this is not enough for the normal functioning of the security system. It is not difficult to determine this - if when you turn the key, a characteristic cracking sound is heard, indicating the operation of the solenoid relay, then the reason is in the battery;
• If the car alarm includes a temperature sensor, it also often causes the power unit to block. To check whether it is the culprit of the problem, just disconnect the sensor, which is usually attached under the hood;
• The culprits for incorrect operation of the alarm may be the limit switches on the hood or trunk lid. If they are not insulated sufficiently, they quickly oxidize in damp weather. In any case, this is a manifestation of the unprofessionalism of the installers.

How to disable FALCON TIS-010

To transfer the immobilizer to service mode, you will need a PIN. Algorithm of actions:

1. Opening the door with a key.
2. Turn on the ignition.
3. Pressing Valet three times within 3 seconds from the moment the indicator starts flashing.

After performing these actions, the light turns on for 5 seconds and then blinks slowly. Now you need to count the number of flashes. When it matches the first digit of the PIN, press Valet. Then counts the number of flashes for the second and subsequent code numbers.

Technical means for unlocking engine start

So, what to do if the alarm blocks the engine from starting, and all of the above methods did not work or were unavailable?

Let us list the technical methods for implementing blocking of the power unit:

• via CAN bus through special programming of the corresponding modes;
• through the starter (disabling the breaker relay included in the retractor relay circuit);
• blocking the operation of the fuel pump;
• through the power supply circuits of the injection system (blocking the operation of the injectors or the injector as a whole).

How to disable KGB

Algorithm of actions:

1. Opening the door with a key.
2. Turn on the ignition.
3. Press Valet once in the first 10 seconds.

After this, the KGB VS-100 auto-protection will be disabled and the engine can be started. And in the KGB VS-4000 version, there will be an additional pair of sound signals in the car, and four in the key fob.

Factory shutdown method

This button can be located in different places. This depends on the model and make of the car. Most often it can be detected:

• slightly to the right of the gas pedal;
• slightly to the left of the clutch pedal;
• within the fuse box or somewhere near it;
• immediately under the steering wheel, in a small recess;
• under the front panel.

Since this is a special service button, it will not be visible and easy to access (this makes no sense). If you cannot find the Valet button in the indicated places, you should study the operating instructions for the anti-theft system. Such information is key, so it will definitely be indicated there.

The alarm is turned off by simultaneously pressing the Valet and one of the pedals (sometimes you need to press two pedals at once). The most common combination is Valet and clutch pedal, after which the alarm will be disabled.

If you don't have an instruction booklet, you can try all the combinations of holding the Valet and pedals. First, you should press the pedals in order, and if this does not help, move on to combinations. You will need to repeat the action six times, but some anti-theft systems can block the car after just two attempts.

On modern cars, there is a different factory way to turn off the alarm. It differs from maneuvers with pedals, since you will have to interact exclusively with the Valet button and the ignition.

To do this, you need to take a few simple steps:

• Open the door with a regular key. This will activate the security system, the siren, and the turn signals will flash.
• Then turn on the ignition for a couple of seconds and turn it off immediately. The engine does not need to be started in all subsequent versions, only the ignition.
• Then the Valet button is pressed and held for several seconds.
• The alarm will emit a short siren, which will notify the driver that the car has entered emergency mode.

Each time the ignition is turned off, the car will emit two short beeps - another reminder that the emergency mode is activated.

System shutdown methods

The car alarm can be turned off at any time in a standard or non-standard way. If everything is clear in the first case, the complex is deactivated by a signal from the control panel, then in the case when the communicator suddenly fails, the alarm can be turned off in two ways.

If there is no remote control

Emergency shutdown.

To apply the method, you must know the algorithm of sequential operations with the car’s ignition circuit and the Valet button. Information on the method for urgently disabling the standard alarm may be contained in the machine’s service book. If the search for a service key takes a long time, and the siren annoys your neighbors, you should reset one or both terminals from the battery. But you can count on stopping the siren scream in such a situation only when interacting with the simplest or old car safety systems. The sequence of pressing the service button and turning on/off the alarm is different for each complex. Therefore, without reliable information about the algorithm, it will not be possible to deactivate an alarm that has suddenly become hysterical.

Deactivation by code.

The vehicle owner knows the PIN code of his alarm. In such situation:

• The fuel ignition circuit in the engine is turned on;
• The service button is pressed the number of times corresponding to the first digit of the secret code;
• The ignition is turned off;
• After this, the operation is repeated for each subsequent digital code value.

But it should be borne in mind that the original algorithm is contained in the accompanying documents for the car. You need to start the process only after you are completely sure that the steps to unlock the device are correct.

Another option is possible if the owner knows where the security system fuse is located. Then you just need to remove it from the nest.

How to turn off the siren?

In order to turn off a working siren, you can:

• De-energize the vehicle's on-board network by disconnecting the battery;
• Signal from the control panel;
• By dialing a PIN code from inside the vehicle;
• Cutting the speaker power wires with wire cutters.

Useful tips

When installing a car alarm, you should always take into account the possibility of unusual situations arising.

To minimize the consequences of blocking the power unit, you need to take the following measures:

• Anyone who has the opportunity to use your car should be informed of the codes and algorithm of actions for disarming the car;
• when buying a used car, be sure to ask the seller about the location of the hidden button;
• if you decide to sell the car, similarly provide the buyer with the same information, as well as the address and name of the car service center where the security system was installed;
• Do not trust important information regarding the functioning of the car alarm to your smartphone. It must also be fixed on a solid medium;
• do not check the fuses if the car is located far from a populated area - you risk damaging the security system;
• The first symptom of a dead key fob battery is a decrease in range. Do not wait until the alarm starts to malfunction; replace the battery immediately;
• do not allow moisture to get into the left pillar of the machine (for example, when leaves get into the drainage system) - in this case, there is a high probability that water will penetrate into the alarm head unit and disable it.

If you follow these recommendations, you can avoid unpleasant situations, and if an emergency does occur, you can solve the problem yourself. Otherwise, the only way out is to transport the car to the installer.

What to do if the engine does not start after turning off

If all of the above measures do not lead to the unlocking of the engine starting system, then the problems with the car are probably more serious, and you need to quickly deliver the car to a service station, where it will be possible to carry out a full diagnosis of the anti-theft device and important systems of the car, determine the real reason for the engine blocking and eliminate it.

To deliver your car to a service station, it is better to use a tow truck. You can also invite an electrician or anti-theft systems specialist to your garage.

In conclusion, it should be noted that the anti-theft system is reliable and functional only if installed and connected correctly. Any error in installation and settings can block the engine and create many problems. To avoid troubles, choose a car alarm from trusted manufacturers, trust its installation only to professionals, and if malfunctions occur or the car’s engine is blocked by the alarm, use only proven unlocking methods.