The automatic sensing of the headlights is not on, do you know?

If it just doesn't work automatically, consider the cause to be a problem with the sensor.

If the headlights are not lit, they are divided into all the headlights and some of them are not lit.

The reasons for the failure of all the headlights are as follows:

1.The power line is broken or lapped before the light is switched.

2.The fuse in the line trips or burns out.

3.The light switch bimetal contacts are not in good contact or do not close, or the light switch is damaged.

4.After a certain gear of the light switch is connected, some lamp lines are connected to the iron to cause the bimetal contacts to open.

The reasons why the bulb in the headlight part does not light up are:

1.Caused by poor tie build.

2.The light bulb burned.

3.Loose or corroded joints increase contact resistance.

The automatic headlights are controlled by the photosensitive switch, if the headlights can be turned on and off normally manually, but the headlights cannot be turned on normally in the automatic mode, it is the fault of the photosensitive switch system that needs to be repaired.

The automatic sensing of the headlights is not lit, mainly to check the sensor, if it is not possible to turn it on manually, it is the bulb is broken.

Hello, this may be due to the failure of the light sensor, it is recommended to check it out, and replace it if it is broken.

If the automatic sensing of the headlights does not light up, it is recommended to check whether the sensor is normal and repair it in time.

This may be a problem with the sunlight sensor, and you have to see if there is anything on the sunlight sensor for guidance? Including the light switch, has it been adjusted to the automatic gear?

Hello, in this case, it is recommended that you check the headlight switch, followed by the headlight sensor.

Hello, this problem is still to go to the repair shop to check whether there is a problem with the sensor and wiring, and replace it if necessary!

Hello, what you said about this situation is generally your control switch is not hit to automatic mode or is it, your sunlight sensor?

This is generally the photoswitch is broken, or consider the repair shop and the four S shop for maintenance, or replacement.

Hello, you can check if this is a problem with the sensor, and whether the manual headlights can be used.

Well, in your case, you may have a problem with the car's sensing system. It is advisable to check it out.

In your case, there should be a problem with the light sensor, and it is recommended that you can go to a local professional repair shop to check it.

There should be a problem with the optical switch sensor. You'd better go to a 4S shop for an overhaul. If it doesn't work, replace it!

In this case, there must be some problems with the sensor, and it is recommended to go to a professional place to test the sensor.

Hello, in this case, there may be a problem with the light sensor. Can check this.

Hello, it's very likely that there is a problem with the light sensor, it is best to go to the store to check, this is not easy to see yourself.

The main reasons are: 1. Sensor damage; 2. The sensitivity of the automatic headlight is related to the characteristics of the light sensor itself, which belongs to the characteristics of the hardware itself, just like the temperature point of the thermostat. It is recommended to contact after-sales for resolution.

Suggested solutions: 1. If the automatic sensing headlight fails, you need to check whether there is a problem with the sensor, or there is a fault in the line connection, it is recommended to go directly to the repair shop to check. Automatic headlights detect the brightness of the sky through a light sensor on the front, and turn on the headlights when they feel that the light is significantly darker.

2. Start the vehicle and energize the whole vehicle; Roll the scroll wheel on the left instrument panel, at this time the sensing distance of the headlights will change, the higher the sensitivity, the farther the distance of the headlights to change light, the lower the sensitivity, the distance to the car is very close to achieve the light. 3. When the light is dimmed while the car is moving, the headlights will automatically turn on and turn off when the light becomes brighter. It is worth mentioning that many people mistakenly think that the "automatic headlights" are designed for crossing the tunnel, but in fact, there is no delay in the opening of the automatic headlights, that is, the headlights will be automatically turned on within ten seconds after the light sensing system senses that the light is dimmed, and according to the traffic regulations, the car must turn on the headlights in advance before entering the tunnel, so the headlights need to be turned on manually in advance when passing through the tunnel.

Not necessarily some are inductive, and when no one is around, they go back to themselves to extinguish.

Principle: It is actually an automatic switch control circuit, there are many types, the way of closing the switch (that is, turning on the light) has "voice control", "trigger", "induction", "light control", etc., the way of disconnection is basically the same, controlled by a delay circuit (automatic disconnection after working for a period of time).

The sensor light switch is sensed by human body temperature measurement. The average human body emits infrared light at a specific wavelength of about 10 microns.

Special sensors can be used to detect the presence or absence of such infrared rays.

When the human body's infrared rays irradiate the sensor, the charge will be released outward due to the pyroelectric effect, and the follow-up circuit can generate a control signal after detection and processing, so that the light will turn on, and the light will automatically go out after a certain period of time. In fact, the posture crack sensor light switch is very similar to the sensory grip lamp, both of which are such sensors.

The condition of the car has the following points: the wiring of the car dashboard circuit wiring card is loose, resulting in poor contact. Contact short circuit of a certain line of the instrument. The voltage of the car is unstable. It is recommended that you go to a professional repair shop to have it checked to avoid unnecessary trouble.

The sensor of the automatic sensing headlight is under the front radiator baffle of the vehicle, which is used to sense the brightness of the light outside the car, and the daytime running lights are lit on the changing day, and the headlights are lit at night, and the specific operation steps found are as follows:

1. Open the door on this side of the cab.

2. Pull the hood switch on the left side of the driver's leg.

3. Lift the hood of the engine upwards.

Fourth, use the support rod to support the hood to ensure that the support is firm and avoid danger.

5. The sensor of the automatic sensing headlight is located in the figure.

This must have some implications. It is mainly reflected in two aspects:

1. Start the motor.

Because the induction headlight is turned on at the same time as starting, this will affect the battery to supply power to the starting motor, so that the speed of the starting motor is reduced, and the operation is unstable, thereby affecting the start of the engine.

2. Spark plug ignition.

When the engine is started, the induction headlights are turned on, and the battery power supply will be affected, which will affect the output voltage of the ignition coil, thereby affecting the normal ignition of the spark plug.

Therefore, when starting, the opening of the induction headlight is not conducive to the start of the engine, which may cause problems such as insufficient combustion of the combustible mixture and difficulty in starting.

Although it cannot be reflected when the battery capacity is sufficient, in the long run, it will accelerate the aging of the battery, and the problem of engine starting will appear.

Therefore, before starting the car at night, it is best to turn off the induction headlights and turn them on after the engine starts (the generator directly supplies power to the headlights after starting), which is good for the life of the battery and the start of the engine.

The sensor of the automatic sensing headlight is under the front radiator baffle of the vehicle, which is used to sense the brightness of the light outside the car, and the daytime running lights are lit on the changing day, and the headlights are lit at night, and the specific operation steps found are as follows:

1. Open the door on this side of the cab.

2. Pull the hood switch on the left side of the driver's leg.

3. Lift the hood of the engine upwards.

Fourth, use the support rod to support the hood to ensure that the support is firm and avoid danger.

5. The sensor of the automatic sensing headlight is located in the figure.

It's in that location. If you enter the tunnel, it is better to turn on the headlights in advance by hand, and it is safe. Ha ha.

For more information about the new LaCrosse, please check Ekcar Auto.

Hello dear! I am helping you with the relevant information, please wait a while and get back to you immediately3Lift up the hood of the engine and you can see it. Support the hood with a support bar to ensure that the support is secure and avoid danger.

If the film position blocks the normal lighting of the sensor, or if the light is darkened or intensified, it will have an effect.

Besides, what kind of sensor is yours, it's so bad, it will light up after 20 seconds into the tunnel, this kind of strictly speaking is not qualified, ** there is a second induction. Not bad.

Automatic headlight sensing can adjust the sensitivity, there is a roller on the left instrument panel of the vehicle to adjust the sensitivity of the headlights, the higher the sensitivity, the farther the distance of the headlights to light, the lower the opposite sensing sensitivity, the distance to the car is very close to achieve the light, the specific operation steps of using this sensitivity adjustment key are as follows:

1. Press the brake pedal of the car.

2. Press the car's one-button start button.

3. The instrument of the car lights up, and the power supply of the whole car is turned on.

4. Adjust the roller of the headlight sensing sensitivity.

5. At this time, the sensing distance of the headlight will change accordingly.

Enter 09** electronic control,Select encoding,There is an RLS control unit option inside,Its encoding defaults 208933,,, adjusting the sensitivity of rain and light is to modify this encoded value。。。

Converting 208933 to hexadecimal is 033025

Where 30 represents the sensitivity of the light sensor, and 30 to decimal is 48, which means that the sensitivity is 48%.

25 represents the sensitivity of the rain sensor, and 25 to decimal is 37, which means that the sensitivity is 37%.

The 03 in the first position represents the sensor option: +1 means to turn on the high-speed automatic headlights, +2 to turn on the automatic headlights when it rains, and +4 to turn on the automatic window closing when it rains.

The current value is 03, which means that the high-speed automatic headlight and rain automatic headlight functions are turned on. Because the automatic window closing in the rain is +4, the current position of 03+4=07 means that all options are turned on. If the light sensitivity is modified to 30%, the rain sensitivity is modified to 90%, 30 to 16 is 1e, 90 to 16 is 5a, then the corresponding combination of hexadecimal code should be 071e5a and then 071e5a to 10, that is, 00466522, encoding can be executed.

With the gradual increase in the functions of the car, the number of auto parts and the probability of failure increases, so what solutions do we have for the failure of the auto-sensing headlights? There are several ways to do this:

1. If the photosensor fails and the automatic headlight fails, then a new photosensor needs to be replaced. It may also be that there is a problem with the relevant wiring in the photosensitive sensor, and it is best to go to a repair shop to repair it and check the wiring problems one by one.

2. If the instrument panel heat insulation pad that does not meet the requirements is used, the sensor is blocked or the hole position is not matched, resulting in the failure of the automatic headlights and the problem of continuous onning, then it is necessary to remove the instrument panel heat insulation pad or replace the instrument panel heat insulation pad that meets the specifications to solve the problem.

3. It may be because the switch of the headlight is damaged, as long as the switch of the automatic headlight is replaced.

If the automatic headlights fail during driving, you must try to turn off the automatic headlight switch, manually turn on the high beams or low beams to remedy, ensure your safety on the side of the road, and then contact the maintenance personnel to the scene for maintenance, or find a repair shop in time for inspection and repair.