The abs light on the viburnum came on

Most modern and not so modern cars (be it an Opel Astra or a Subaru Legacy) have a huge amount of electronics inside, created for maximum driving comfort, additional traffic control, and avoidance of dangerous situations. The presence of problems is reported by indicators such as ESP (aka “anti-skid”), induction speed sensor (triangle), anti-wheel drive, handbrake indicator (exclamation mark), ESC (exchange rate control) sensor, and anti-lock braking system (ABS) light. Sometimes the indication works on its own, for no apparent reason. The flashing of the “garland” near the speedometer causes surprise and fear among both experienced motorists and beginners who have barely received a license and their own car. In this article we will look at one of the most common situations - when the ABS sensor is on.

Causes of ABS error

Why does the ABS light come on? This indicator is triggered for several reasons:

incorrect operation of sensors in car wheels;
problems with the anti-lock braking system control unit;
malfunction of the cables responsible for signal transmission;
the crown on the hub (front or rear), from which the ABS reads information, has deteriorated.

The signal can turn on both while driving and before driving, when the engine starts to start. Problems are common for those who like to drive off-road - the sensors get dirty with dust, dirt, moisture, strong shaking breaks the wires. The control unit will recognize such violations and the sign will light up on the dashboard instantly.

Sometimes the wrong actions of the car owner lead to a breakdown. Often, incorrect replacement of parts (wheel bearing, CV joint, pads, etc.) leads to the system starting to blink. At the same time, the handbrake, ASR, anti-skid and other “anti” indicators on the dashboard can spark. In this case, it is necessary to check whether the replacement was carried out correctly and whether problems arose when reinstalling the parts.

If you broke down on the way

In recent years, the production of Lada Kalina cars (ECU) of domestic production was replaced with Korean ones. The kind they put on Hyundai cars. After that, power steering failures became significantly less frequent. But they started installing Korean blocks on new cars.

Electric power steering for modern cars has already become an integral part of them. On the Russian market it was first installed on the Lada Kalina (VAZ 1118). The electric booster added both a lot of positive emotions and a lot of negative ones.

The situation is quite typical: the client complains that the electric power steering sometimes turns off and the electric power steering warning light comes on

This situation is very annoying, because not only the owner uses the car, but also his wife. It is much more problematic for a woman to turn the steering wheel without electric power assistance.

We start the car, and the electric power steering fault light actually lights up and it becomes quite difficult to turn the steering wheel. It is imperative to deal with this problem.

We connect the diagnostic scanner and connect to the EMUR control unit.

On the monitor screen we see the following error: C1044 – incorrect sequence of the rotor position sensor. What is a rotor position sensor and where is it located?

Let's take a break from our malfunction for a moment and touch on a little theory. Let's understand the EMUR device and what main parts it consists of. Let's consider all its parts separately.

Steering shaft
Electric motor
Electronic control unit
Torque sensor
Rotor position sensor

Remove the steering wheel, steering column switches and ignition switch. To get to the torque sensor, you must first remove the electric motor. We unscrew the bracket with 4 bolts, the cardan shaft, the lock nut and the 3 bolts securing the electric motor.

This is what we got (Fig. 12)

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Next we pull out the shaft.

We take out the torque sensor winding (Fig. 17), having previously unsoldered the wires from the board (Fig. 16).

Design of an inductive torque sensor.

The inductive sensor consists of two concentric cylinders with holes (perforation slots), which are fixed to the shaft and rotate with it. And two concentric coils with primary and secondary windings, fixedly inserted into the EMUR housing.

We will not go into various terminology, but let’s put it simply: an alternating current with a frequency of 20 kHz is supplied to the primary winding, and if we apply force to the shaft (that is, we begin to rotate the steering wheel), then a voltage “” or “-” appears on the secondary winding depending on the direction of rotation, and the magnitude of this voltage is directly proportional to the applied torque (force). Thus, the electronic control unit (ECU) determines with what force you rotate the steering wheel in one direction or another.

So, we’ve dealt with the torque sensor, let’s move on to the next one, namely the rotor position sensor (Fig. 20), which is located on the back cover of the electric motor.

The EMUR of the Lada "Kalina" uses a 3-phase switched inductor (brushless) motor. In order for it to start rotating in one direction or another, the electronics must understand what position the rotor is currently in and, after determining the position, apply voltage to certain stator windings at the right moments. To determine the position, a rotor position sensor (RPS) is used.

Diagram and design of an optical rotor position sensor.

3 optocouplers located at an angle of 120 degrees - LED (LED a,b,c) and photodiode (PD a,b,c), correspond to the location of the motor stator windings phases A, B, C. A disk is installed on the motor rotor, and when it rotates Photodiode a, b or c is triggered. In this way, the electronics determines the current position of the rotor.

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Next, let’s look at the electronic control unit EMUR (Fig. 23), we won’t say anything special about it, we’ll just look at the photo of the board itself.

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Well, we have sorted out the EMUR device, let’s return to our malfunction, with which the owner of the Kalina car came to us. What needs to be done to make everything work as it should? A fairly common malfunction with this modification of the EMUR is poor soldering of the optocouplers on the rotor position sensor board. It is enough to simply solder all the contacts of the optocouplers (Fig. 24) to revive the EMUR, which we hastened to do.

After soldering the board, we assemble everything in the reverse order and start the car. Hurray. The EMUR fault light went out and the steering wheel began to rotate very easily.

We have a scanner to check parameters and read fault codes, but what should a simple motorist who does not have this equipment do? How to count errors without a special scanner? It's quite simple.

In order to read the self-diagnosis codes of the Kalina EUR you need to:

1) With the ignition off, short the 6th contact of connector X2 of the EMUR control unit to ground, or short-circuit contacts 6 and 7 (Fig. 26). There is no 6th pin in connector X2, so we installed a piece of white wire there and connected it to the 7th pin (ground).

Let's look at the EMUR circuit for a more detailed understanding.

What to do if the ABS light comes on?

The anti-lock braking system is designed to eliminate possible problems while driving and prevent errors on the part of the driver when operating the pedal. When braking sharply, ABS will not allow the wheels to completely lock, excluding skidding, for example on slippery sections of the road - the car will gently reduce speed. If you see that the ABS light is on on the dashboard, reduce the pressure on the brake pedal. Then the car will do everything for you.

Important! The presence of such a system in a car is not a reason to accelerate on icy roads or drive quickly on a wet road. Remember that indicators, buttons and signals do not work if the driver is driving incorrectly.

A failure in the ABS means that the system will not work properly at the right time. In the best case, the car will hit an obstacle, in the worst, the outcome will be fatal.

Why is the abs system needed?

In short, ABS regulates the braking forces on each wheel so that the car's wheels do not lock when braking, but the car effectively stops. This way, if you brake hard enough, you will not lose control of the car.

If there is no system or it is out of order, then during sharp braking one or more wheels may lock and stop rotating (they skid). Which can lead to skidding, especially if you have to brake hard when turning.

In any case, if the ABS fault lamp is on, then the system is not working! You can easily check: accelerate to 40 km/h and sharply press the brake pedal to the floor. If there is no pedal vibration, the abs does not work.

If you have an anti-lock braking system, you can press the brake pedal hard and try to avoid an obstacle. Without ABS, if you slam on the brakes and try to avoid an obstacle, you may simply skid and hit the side of the car against the obstacle. This is short...

Options for self-diagnosis of the system if ABS lights up on the instrument panel

The on-board computer reports the presence of errors in the functioning of a particular unit. The display will show a code corresponding to the specific problem.

Important! The set of error codes and their designations vary. It all depends on the manufacturer. It is necessary to clarify the decryption in the user manual or on the Internet.

Diagnostics can be done on your own. You can do something from the list below.

Self-control test. On a dry section of a normal road we accelerate to 100 km/h. Turn off the radio, close all the windows, listen carefully. Did you hear a cracking sound (from the front, rear, right or left side)? There may be play in the hub bearing.
Visit to a car wash. During the cleaning process, instruct that special attention be paid to the discs and hubs. Thorough cleaning will eliminate the spontaneous ignition of the ABS check.
Checking fuses. If the one responsible for the anti-lock braking system has burned out, replace it.
We put the car on a jack, carefully examine the sensor area, and check the integrity of the cables. Noticed corrosion or dirt? We clean it carefully. After this, the ABS activation should disappear.

The most reliable way (and the most expensive) is to send the car for diagnostics to a service center. Thanks to special equipment, specialists can find faults quickly and accurately. Alternatively, you can take care of purchasing such equipment, but its price may be completely unaffordable for some.

Fixing the ABS light coming on

With proper timely diagnosis, it is quite easy to get rid of problems or adjust the operation of the system. During operation, the driver is able to influence the operation of the unit himself - through the ABS module pump or valves. In addition, a lot depends on the causes of the problems. Sometimes the ABS sensors and wires are working properly and are in the right place, but the module itself is acting up. In this case, there is only one way out - to change the module, since the manufacturer did not intend to repair it.

If the problem lies in a malfunction of the on-board computer, you need to reset the settings. But, of course, only after a complete check of the sensors, cables and module.

How to modify the design

To protect the wiring harness from the environment, you can use a D-shaped seal. We lay the wires in it and wrap it with electrical tape. We put everything in the corrugation. We glue the cover covering the ABS sensor connector around the perimeter with the same sealant. This will prevent moisture and dirt from entering the area where the sensor and connector are located.

Attention! If the ABS fails, the brakes remain operational, but the braking efficiency is reduced, which is especially dangerous on some surfaces. See why.

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How the ABS status indicator should work

Ideally, when the system is working properly and there are no problems, the ABS icon lights up when ignited. The machine simply checks the electronics, reporting this on the display - buttons with indicators begin to blink or light up. Having made sure that the signal is passing normally, the icon begins to go out a couple of seconds after startup. Sometimes the ABS continues to light up, sometimes the icon turns on while driving. This indicates a malfunction of the brake system. It is necessary to carry out an inspection and, if necessary, repairs.

Why does the ABS error appear?

Normally, the ABS light comes on immediately after starting the engine and goes out after a couple of seconds, when the on-board computer checks (and approves) the operation of the system itself.

If the light comes on while the Renault is in motion, or does not go out shortly after starting the engine, the reason may be that:

ABS system fuse blown
The ABS wheel sensor has failed - due to mechanical damage or a change in the gap between the sensor and the gear rotor
contact with the system sensors is lost - the wiring is broken, the terminals are oxidized
the voltage in the on-board network has dropped below 10.5 V (the battery is dead, the generator is not working, etc.)
The hydraulic pump motor has failed
The hydraulic valve or ABS control unit has failed (rare failure).

Also, the ABS lamp may light up after an illiterate repair of your Renault due to the inept actions of a technician who damaged the sensor or wiring.

Reasons why the ABS malfunction indicator turns on spontaneously

When the functions are performed correctly, the ABS light comes on, indicating that the wheels are unlocked. The electronic innards realized that the ABS needed to be turned on. The presence of other indicators (for example, ESP) will allow the car to cope with wet roads or ice on its own.

Usually the alarm is triggered due to a problem. This is when the ABS error light comes on:

sensors are clogged with dust, moisture, dirt;
the sensor is rusty;
problems with the computer: the device lights up the indicators spontaneously, for no reason;
the chassis is acting up, displacing the ABS sensor;
The fuse has blown.

The ABS sign lights up in any car, regardless of its class, purpose or in which part the drive is installed - front, rear or both. As an example, the Volkswagen line of cars from the late 90s: in it, the ABS check was triggered, even if the fault did not concern the brake system.

How to check ABS sensors - visual inspection

Alternatively, the ABS system can be checked using an ELM-327 scanner . An induction type sensor is an induction coil paired with a toothed metal disk located above an impulse rotor connected to the drive shaft or wheel hub. If the sensor is broken, you can find out with a tester, a soldering iron , or repair pin Next, proceed to measuring the resistance voltage in the node.

Around the pole core there is a winding connected to the magnet. This proximity allows the magnetic field to freely pass to the inductor. And since the rotor rotates and the interdental cavities change, the magnetic flux passing through the winding core changes. Such changes create alternating voltage, the level of which must be measured. The voltage frequency and amplitude depend on the number of wheel revolutions.

The pins are attached to the connectors, and the tester measures the resistance of the abs sensor. When measuring, the resistance rate is within 800-1200 ohms , but it is better to look at the passport and check with the permissible unit. When the network increases to infinity, a network break has occurred, and if the resistance shows zero, then a short circuit has occurred in the sensor circuit. To conduct a complete diagnosis of the sensors, you need to test all the wiring of the device with a tester. When everything is normal the readings will be like this:

insulation resistance level – more than 20 kOhm ;
leg – front right abs sensor 7-25 Ohm ;
leg – rear right ABS sensor 6–24 Ohm .

When a breakdown is detected during inspection of the sensor, there is no point in repairing it. If a malfunction is not found, then it is not recommended to interfere with the operation of the central unit yourself. Technicians will review the fault codes previously stored in the device and take appropriate action.

Driving along a snow-covered road, the ABS indicator came on, there was 15-20 centimeters of snow on the road, I was driving along the right side, while the left side was following a well-worn track. Because I have ABS, then this is not just a contact closure. I looked into Google, the most common breakdown of this unit (if there is ABS itself) is a break in the wiring from the sensor plug. I was tormented for a month by the fact that the ABS indicator was on. But when I looked in, I didn’t notice anything suspicious; I didn’t want to take it to the service station, there was no hole. But somehow it caught fire and decided, after lying around in the snow, to find what was wrong, I got down on my knee, once again looking under the car, and there was the plug, hanging right under the right threshold, one wire had broken off from the plug, the insulation of the second had burst.

Consequences of a faulty ABS

ABS, like any other element of a car, can wear out, losing reliability over time. The essence of the system is to ensure proper braking. Each wheel has a “personal” sensor, which allows you to gradually adjust braking and reduce speed without blocking all wheels at once. A system that is not working correctly will not be able to do this.

You can disable ABS, but you still shouldn’t do it. If the ABS does not perform its functions correctly, damage to the suspension may occur. An ABS lamp that comes on in an unusual situation threatens to cause the driver to simply lose control of the vehicle.

What to do in various situations if the ABS light is on on the instrument panel

When the ABS check light is constantly on, make sure that there are no problems with individual elements (diagnostic methods are provided above). If after repair the light does not go out, it may be necessary to reflash the ECU or pay attention to other components of the car - sometimes the system works if something else refuses to work.

Abandoning the system by turning it off is not the best option, especially for modern cars. In most models, ABS is connected to the chassis; disabling it will negatively affect the functioning of the entire vehicle.

The error code indicates a failure (open circuit or short circuit) in the speed sensor of a specific wheel (for example, rear right)

As mentioned above, each ABS wheel has a specific sensor. If an error code appears regarding a sensor failure on a specific wheel, do not rush to replace the sensor. There may have been a break - make sure the network cables are intact; perhaps the wire has come loose from the connector or is completely torn.

The error code indicates that there is no signal from a specific wheel rotation sensor.

The situation is similar to the previous one, but now the problem is with the sensor. The sensor should only be replaced if there is severe wear. The problem is sometimes caused by an incorrect sensor position. Consider the location of its installation, make adjustments, start the engine and drive off. If the problem persists, the icon will light up again.

Failure of pressure regulator solenoid valves

This malfunction affects the operation of the system as a whole. The icon will be continuously lit, and the ABS will not perform its functions correctly. Replacement with a working or completely new system is necessary.

Malfunction in power supply circuits

This case may be completely unrelated to an ABS malfunction (at least the diagnostics do not indicate them). The fuses need to be checked. Usually replacing the one responsible for the anti-lock braking system solves the problem.

Lack of communication via CAN bus

A serious problem because it affects the operation of electronics in general. The CAN bus is one thick wire connecting all nodes and circuits. Breaks that occur or movement away from the connector require contacting a service center. The constant absence of ABS signals and other sensors will indicate such a breakdown.

After bearing replacement

Motorist forums contain topics with the general title: “ABS lights up after replacement (insert part).” The problem often occurs after replacing the wheel bearings. It all depends on the make and model of the car. The problem is attributed to improper installation or damage during the process. It is also quite common for cables or the system sensor itself to be damaged. A re-opening and elimination of the problems that have arisen are required.

After replacing the hub

After replacing the hub, the anti-lock braking system goes crazy. As in the previous situation, damage to the wires and sensor is possible. If the system elements are intact, it is necessary to check the gap between the sensor and the comb of the newly installed hub - it should not exceed 1 mm.

After replacing the pads

Another possible option. Installation of new pads may also be accompanied by a malfunction of the system due to a large gap, broken cables, or damage to the sensor. The sensor may be clogged with lubricant - the problem can be eliminated by cleaning.

Issues discussed in the material:

What is an ABS light bulb and what is it for?
Why is the ABS light on?
Why is the ABS light on and what should you check immediately?

It happens that a suddenly illuminated ABS light makes some motorists shudder nervously. They believe the entire braking system has failed. The puzzled car owner begins to look on the Internet for a way out of this situation. However, there is no need to panic. After all, the brakes may be normal, but malfunctions may occur only in the anti-lock braking system, which is not at all critical. The article discusses in detail the question of why the ABS light is on and what should be done to correct the situation.

What to do if the ABS light is on?

It is worth noting that the system works normally if the ABS icon lights up when the ignition is turned on and goes out after a couple of seconds. The first thing to do if the ABS light is constantly on is to check the fuse for this system, and also inspect the wheel sensors.

Quite often, the sensor connector on the hub either oxidizes or the wires fray. And if the ABS icon is on after replacing the pads or hub, then the first logical thought is that you forgot to connect the sensor connector . The presence of dirt on the sensor also causes the indicator to light up.

Quite often, car owners may be frightened by the appearance of an orange ABS icon after a good slip. In this case, you shouldn’t bother at all: brake sharply a couple of times and everything will go away on its own - the control unit’s normal reaction to such a situation. When the ABS light does not light up constantly , but periodically, then you need to inspect all the contacts, and most likely, the cause of the warning light can be quickly found and eliminated.

What is an ABS light bulb and what is it for?

The ABS system controls the braking of the wheels without locking them. Moreover, the car stops quite quickly. If the car owner is forced to brake sharply, thanks to the anti-lock braking system, loss of control of the car will not occur.

If the vehicle is not equipped with an anti-lock braking system, or it is inoperative, then when braking sharply, the wheels will block or stop rotating. This can lead to the car skidding, which is especially dangerous when turning. If the ABS light is on on the dashboard, this indicates a problem with the anti-lock system. It is very easy to check whether the anti-lock braking system is functioning. To do this, the car is accelerated to a speed of 40 km/h and the brakes are sharply pressed to the floor. If the pedal under your foot does not vibrate, it means that the ABS function is faulty - the indicator lights up. Thanks to the anti-lock braking system, you can suddenly “slam on the brakes” and then quickly go around an obstacle. If there is no ABS function, sharp braking and simultaneous avoidance of obstacles is impossible, since there is a high risk of the vehicle skidding.

The anti-lock braking system consists of the following elements:

rotation sensors (all wheels of the car are equipped with them);
hydraulic control unit;
a special mechanism for monitoring the functions of the hydraulic unit;
ABS light bulb located on the instrument panel.

Objective reasons why the ABS light may be on are errors on the instrument panel:

When you start the car engine, all the lights on the dashboard light up, this indicates that the car’s systems are in operating mode. If the automation is fully operational, then within a few minutes all the icons on the display will go out. But when the ABS indicator does not light up when you start the engine, most likely the light bulb is not working.
A long-burning ABS light indicates a malfunction in the anti-lock braking system. The malfunction is detected by the on-board computer, which recognizes and stores the fault code, and then turns on the signal indicator.

Next, we will talk in more detail about the situation in which the light indicates a malfunction and (or) error in the functioning of the ABS.

How does the ABS system work normally?

Let us remind you that ABS - Anti-lock Braking System

- in a car it prevents wheel locking and consists of a system of sensors that monitor the speed of the car and the rotation of its wheels, as well as a hydraulic unit and a control unit. The control unit processes the signal from the sensor, and the hydraulic unit distributes pressure to the brake pads.

The main task of the anti-lock braking system

- change the pressure in the brake system line so that, based on data on the speed of rotation of the wheels, the car can brake urgently and at the same time maintain controllability.

Modern ABS systems are reliable and are often paired with an EBD system that distributes braking forces. The most vulnerable point in the anti-lock braking system is the wheel sensor, because it is constantly exposed to contamination and shock, for example, when repairing wheel hubs.

You will understand that the ABS system is working in your Renault when, during intensive braking on a slippery surface, the brake pedal begins to vibrate (feel into your foot, jerking and jerking), and a characteristic cracking sound is heard.

Why the ABS light is on: main reasons

The main reasons why the ABS light on the instrument panel is on:

there is no contact in the connected connector;
there is no connection with any sensor, it is likely that the wire has broken;
The ABS sensor is faulty, so it needs to be checked and, if necessary, replaced with a new one;
the crown on the hub does not work;
The anti-lock braking system control unit is faulty.

After a thorough inspection, identification and elimination of the probable source of the breakdown, it is necessary to check the operation of the ABS. To do this, accelerate the car to a speed of 40 km/h. Then you slam on the brakes. If the pedal vibrates and the error light does not light up, then all elements are working.

If, after a visual initial inspection of the sensors, wires, and control unit, no malfunction is identified and the light continues to light, you need to carry out computer diagnostics. Using this procedure, a specific error code issued by the system is detected.

Looking for a reason

You should start troubleshooting with the fuse. If this element burns out, the ABS does not work. Note that you should not always go into the fuse box, since the behavior of the system itself can give a “hint” regarding the serviceability of the fuse. For example, if the ABS light on the instrument panel comes on only under certain conditions, but after turning off the power to the ignition switch and restarting the engine, the problem disappears, then the problem is clearly not in the fuse. It should only be checked if the warning light is constantly on.

The sensors are located in a place that cannot be called well protected. Therefore, dirt sticking to it will easily cause a malfunction, causing the system to shut down.

Sensors may simply break during the process of repairing and servicing the chassis. Careless work and the use of impact tools during disassembly often cause internal damage to the sensors. Since they cannot be repaired, the damaged element will have to be replaced to restore ABS functionality.

The system can also shut down in an emergency due to the setting elements of the sensors. They are installed on the hub, and during operation they can also become covered with dirt, which will disrupt the functioning of the sensors. Inaccurate maintenance of the chassis can also lead to damage and destruction of the control elements, which will affect the performance of the ABS.

More often than not, the problem occurs due to wiring. Oxidation of contacts, chafing or interruption of wires coming from sensors - this leads to disruption of the system and the activation of a warning light. Sometimes, during the process of servicing the chassis, the wiring is disconnected from the sensors, and then they forget to connect it back. Therefore, when looking for the cause, inspect the wires for damage, their terminals, and only then pay attention to the sensors.

Malfunctions due to all of the above elements of the system are considered easy, since they are easy to fix and inexpensive. It's worse if the problem is caused by the control unit. In this case, you need to either reflash this element or replace it.

The anti-lock braking system fails due to damage to the components and assemblies near which the sensors are located. ABS is disabled if the wheel bearing is severely worn. Because of this, the hub has a lot of play, which leads to disruption of the ABS sensors, and this is the reason for the emergency shutdown.

Video: ABS light is on! How to read an error? Mitsubishi self-diagnosis

Those who first switched from carburetor old cars to a brand new middle-class car are first scared when the ABS light comes on. For those who don’t know what ABS is, it’s clear that it’s an anti-locking system, but not everyone knows what it specifically does. Now we will describe everything in detail.

Why is the ABS light on and what should you check immediately?

Firstly, in these circumstances, you need to go to a car wash and thoroughly wash the wheel rims. It often happens that after the high-pressure wash is completed, the ABS sensors, which are located near the brake discs, are cleaned. While you're heading to the car wash, test the brake system again. Pick up speed 80 km/h, close the windows in the cabin, turn off the sound of the tape recorder. If the wheels (front or rear) make a barely audible or annoying hum while driving, then most likely the light indicates a wheel bearing failure.

In addition, additional activities can be carried out:

inspect the fuse box, change the module responsible for the functioning of the anti-lock braking system;
if possible, recognize the error code and inquire about it on online forums;
contact a specialist who needs to describe the situation in detail, and then try to fix the error yourself;
jack up the car, unscrew the wheels and see if the ABS sensors are dirty;
examine the electronic control unit located under the hood (if there is moisture on it or inside);
Still, the best way out of this situation is to have the car’s anti-lock braking and electrical systems diagnosed at a service station.

Without a doubt, the last option is the most reasonable, since you can get specific information about the causes of the breakdown (why the ABS light is on), find out whether the problem is serious, and also determine the cost of repairs. Only in this way will you get rid of the problem associated with a burning ABS light and other troubles in the operation of the vehicle.

It will be enough to connect computer diagnostic equipment with the latest program for the most complete and accurate testing of the car and identifying errors. Spend just a few minutes and you will be given the information you need to fix the problem yourself or have it professionally repaired.

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If you belong to the category of people who are used to coping with difficulties themselves, we will tell you how to properly correct the problems that have arisen.

The abs and exclamation mark are on.

You were going to buy BC State, but it shows all the errors.
If you bought it, installed it and are using it, then do not accept excuses about the absence of errors when they are displayed. And by resetting the terminal, all errors are “cured”. If you have ABS, then if there are certain errors, the hydraulic unit must be replaced. Check the wiring of the float on the expansion tank. Maybe it’s because of it, but this thing is rare. The second day, when I start the car, the outside temperature blinks,

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

Look at last year's topics from around the same month.

Or there is no abs unit at all, and its indicator is hooked up to a nearby light bulb