What are the reasons for the failure of the remote control of the car door lock

The car remote control key failure is generally in the following four situations: 1, the transmitter of the key is broken 2, the receiver of the car is broken 3, the door lock is broken 4, the electronics in the key is out of power, and the above problems can be solved by going to the ordinary maintenance station for inspection. Car remote control key refers to the wireless remote control function of the central lock, the owner does not need to insert the key key into the lock hole to open and lock the door at a distance, its biggest advantage is:

Day or night, there is no need to detect the keyhole, and it is possible to unlock (open the door) and close the door (lock the door) from a distance and conveniently. Rationale:

A weak radio wave is emitted from the key, and the electric wave signal is received by the car antenna, and the signal is identified by the electronic controller ECU**, and then the actuator (motor or electromagnetic manager circle) of the system performs the action of opening and locking. The system is mainly composed of two parts: a transmitter and a receiver.

In addition, car keys such as remote control keys should avoid contact with some strong magnetic fields during use, for example, high-voltage lines, transmission towers and other places where there are strong magnetic field signals, try to avoid vehicle parking, because smart keys use low-intensity radio waves, so they may not work normally in the case of magnetic field interference. In addition, try not to throw away the smart key when using it, because most smart key cases are relatively strong, but if you throw them frequently, the internal battery will not contact well. In addition, after some car windshields are pasted with explosion-proof solar film, when the remote control door is opened directly in front of the vehicle, the remote control door lock will also appear to be unresponsive, because this explosion-proof solar film shields the remote control signal to a certain extent.

The first is that your remote control has run out of electronic power and cannot be connected to the vehicle's computer.

The second is that the sensor that controls the door lock is burned, which is a small problem;

It is recommended to try it with a spare key or spare remote control first, if the same does not work, you will know whether it is an electronic problem with the key or a sensor problem.

There are several main reasons for this:

1.A low battery on the key fob will cause the key light to flash, but the door will not lock. Low power and low voltage will lead to unstable circuit performance and shorten the wireless communication distance.

In this case, you can lock the car close to the body. When necessary, simply replace the battery.

2.There are two types of radio frequency forms of remote control key: short-range infrared remote sensing and short-range wireless radio frequency. Regardless of the form of these two, its transmitting and receiving circuits are prone to failure.

This is because they are determined by three factors: circuit design, component level, and usage conditions.

3.The form of short-range infrared remote sensing and the form of short-range radio frequency are very sensitive to high-power radiation interference, so it is best to stay away from high-power equipment and other communication equipment when using the remote control key to prevent the impact of strong magnetic field on communication.

It is common sense to check the fuse if the electronic device is not operating. Double-check which fuse is for the power window. 2. Motor overheating protection In order to protect the power supply circuit, the general window lifting motor is equipped with an overheating protection mechanism, if the components overheat for some reason, the motor will enter the overheating protection state, resulting in the failure of the window lifting.

In this case, just wait for the motor to cool down. 3. The blockage of the guide rail or the aging of the rubber strip window glass can not be lifted and lowered, which is caused by the stagnation of the body, we only need to clean the guide rail and apply some lubricating oil, if it is the fault caused by the aging and deformation of the glass strip, you need to replace the new sealing strip, and clean it directly if it is dirty. Spraying a glass seal with sheet wax or applying talcum powder (lubrication) can be very effective.

4. The window lifter switch of the car is damaged by the window lifter switch of the car, which is used very frequently on the car, and it will be used almost as long as it is driving, so the probability of damage is also very high. At this time, you only need to directly replace the entire glass regulator switch in the store.

Please give a thumbs up at the end, thank you, I wish you a safe trip and a smooth journey.

There are generally three reasons for the failure of the car remote control key:

1. In general, the failure of the car remote control lock may be due to the car body or the remote control key itself. The failure of the time control module in the remote control key, the aging of the antenna of the remote control transmitter in the car, etc., may cause the remote control key to not work. This requires the owner to go to the 4S shop or maintenance office in time to check the problem when the remote control key fails, and determine whether there is a mechanical problem.

2. Due to the cold weather, some of the remote control is greasy and viscous, resulting in poor contact, resulting in the failure of the car remote control lock. Therefore, the car owner should keep the car remote control key properly to prevent oil from entering.

3. There is also a possibility that the car remote control lock fails that there is strong magnetic field signal interference around the car parking. Because smart keys use low-intensity radio waves, they may not work properly in the presence of magnetic field interference. Many criminals may hide around the vehicle and use signal jamming devices to interfere with the normal use of the remote control key, and steal valuables or vehicles in the car.

Extended information: The car smart key is a common keyless entry system, also known as the smart key system, which is composed of three receivers and related wiring harnesses: the transmitter, the remote control lock control module, and the driving authorization system control module.

The remote control and transmitter are integrated into the car key, and the vehicle can enter the locked or unlocked state according to the signal sent by the smart key, and even automatically close the windows and sunroof.

Reasons why the lock won't open the door:

1. The remote control key must not be able to lock the door when it is out of power, and it only needs to be locked with a mechanical key, which no one usually pays attention to, and it is easy to deal with it in the future, and it can be handled by disassembling and replacing the battery.

2. The remote control lock is out of order.

If the remote control key does not lock the door, it is also likely that the remote control lock is out of order, or the antenna of the remote control transmitter in the car is aging, which is also easy to find, and then lock it with a mechanical key.

3. Magnetic field interference.

There may be strong magnetic field signal interference in some areas, and the remote control key itself uses low-intensity radio waves, so it cannot work normally in the case of magnetic field interference, and naturally the door cannot be locked.

Hello. I'm glad to answer for you. After the car key has been used for a long time, due to the problem of sealing, the interior will more or less encounter factors such as moisture or dirty oxidation, and the keys will gradually become insensitive.

In this case, you need to disassemble the key shell, remove the battery, and then wipe the key base on the internal circuit board of the key with a cotton swab adsorbed with alcohol, clean it and put it back to test whether it is normal; 2. There is also a possibility that the circuit board is in poor contact with the car remote control, which requires soldering, but because the welding legs are very small, and most car owners do not have tools, such as electric soldering irons, it is recommended that it is best to take it to the place where the electrical appliances or mobile phones are repaired for processing;

Question: The car that has just been bought for two years will call the police for no reason, and the door can not be locked after the alarm, the two keys are the same, and the door can be locked after a day or two, and the police will be called after a day, and the door can not be locked, the car that has just been bought for two years will call the police for no reason, and the door cannot be locked after the alarm, the two keys are the same and can not lock the door, and the door can be locked after a day or two, and the alarm will be called after a day, and the door can not be locked, remove the power connector of the locking device in the door, press the remote control, and check whether there is a power supply with the test light, There is a power supply through is the locker is broken, this probability is relatively large, there is no power supply through the line online inspection, generally there is a control block under the steering wheel, check whether there is a power input.

The car will call the police for no reason.

The sensitivity of the trigger is too high: as long as there is vibration or some noise is relatively small, the alarm will work. The car doors are not closed tightly:

If the door is not closed, the car's alarm will work and sound. Controller failure: If the controller of the alarm fails, such as a short circuit, the alarm will also alarm.

Based on what you've said, the door is still unlocked.

It may be that there is a problem with the car's locking system.

Ask how to see the car lock door system.

There is a control panel under the steering wheel, but this involves power detection. It is best to go to the 4S store to check. If there is any problem with the vehicle during the warranty period, go to the shop for inspection and repair.

There are about 4 reasons why the door can't be locked with a key

1. One of the four doors is not locked, in this case, the key remote control will not work, and the door can not be closed and opened, so it can only be opened manually.

2. After the remote control battery is discharged, start the car and drive for a while, and then stop and then close the door by remote control, if it can be turned off, it means that there may be electromagnetic interference nearby. If it is a new car, the battery problem can be basically ignored, but it is not excluded that the key is not good to keep for a long time, and there are foreign objects that can be held down for a long time, resulting in the battery being discharged.

3. There may be a problem with the motor remotely controlled by the main driver's door.

4. The connecting wire of the remote control motor may be deformed.

Hello, first check if the remote control key is out of battery. Then take a look at whether the insurance of the immobilizer is burned, generally there are more of these two situations.

This fault may be that the driver's main door locker is burned or working poorly, if it is locked directly with the key, it should be able to lock, remove it and replace it with a lock.

The doors are not closed tightly or are broken.

Either the door is not closed tightly, or the main door lock block is faulty.

The most common reason is that the key's battery is dead.

In addition to the failure of the key itself, it is also possible that the wiring chip of the key is faulty, or the receiver in the car is faulty. But there aren't many "encounter rates" for such failures.

1. Signal interference.

2. The remote control is out of power.

3. The controller is broken.

Hello, there is a copy when the remote control.

This kind of occasional malfunction:

du1, when there is interference with the surrounding magnetic field, it will fail. 2. The remote control battery is in poor contact, and the key controller is faulty. 4. Outdoor detector failure.

5. Related line failure. I wish you a pleasant ride, thank you! [Car questions, ask the car master.]

4S shop professional technician, 10 minutes to solve. 】

Hello dear, the specific reasons and solutions are as follows:1The key is dead.

If the key is out of power, there will naturally be no response to lock the car, and the solution is to replace the battery. 2.The sensors in the car are dead.

Similar to the first type, if the sensors in the car are out of power, even if the keys are powered, the two cannot be connected. The solution is to replace the battery in the car or recharge it. 3.

If the car key is not recoded after the battery is replaced, the locked car will not respond, and the case will be recoded.

The function of automatic lock initialization of automatic lock needs to be initialized, and it is also very simple: in the state of landing, press and hold the lock button on the central control until the prompt of the automatic lock function starts appears on the screen.

The reason for the failure of the remote lock of the car is often guessed.

01 The failure of the car remote control lock is nothing more than two reasons. One is that there is a problem with the remote control, and the other is a problem with the car. The reason for the remote control key is that the control mold tremor early block fails; The reason for the car is the aging of the antenna of the remote control transmitter on the car.

All of these may cause the remote control to malfunction.

02 Disturbed:

It is possible that there is strong magnetic field signal interference around the car, causing the radio waves of the car key to not work properly. This situation is relatively rare, unless it is a phenomenon that criminals hide around the vehicle to interfere with the signal interference equipment, interfere with the normal use of the remote control key, prepare to steal valuables in the car, or even steal the vehicle. Therefore, you should pay special attention to the car owners.

03 There is also improper storage in daily life that causes the remote control key to malfunction, such as entering or some oil stains intruding, which will cause the parts inside the remote control key to fail to work normally, resulting in malfunction. So keep your key fob.

If you are not confident to solve this problem, it is recommended to go to the 4S store and let a professional master help check the specific cause.