The airbag fault light is on. What happened?

If the airbag fault light is on, it is likely that there is a problem with a component. At this time, the car mainly goes to the 4S shop in time to check and troubleshoot with a special diagnostic instrument. After the fault is repaired, the airbag fault light will not light up again.

It may also be a false fault, causing the airbag light to flash. For example, when the car battery is dead or other electrical equipment is damaged, the feedback voltage of the airbag will also be affected, resulting in a fault code and a fault light flashing.

At this time, the car is mainly to find a place to pull over, turn off the engine and unplug the negative pole of the power supply, and then connect it after 10 minutes, so that the engine can complete the vehicle self-test, so that the airbag fault light will go out.

The airbag light turns on and off for a period of time, which may be as follows:

1, instrument self-check, the instrument will automatically detect in a short time after entering the car and the airbag light will automatically go out after automatic detection, which takes about 5 seconds, which is a normal phenomenon. If the airbag light is still on for a long time after the self-inspection, it can be judged that there is a real fault.

2. False failure. If the battery is dead, it will also cause the airbag light to light up. Moreover, the airbag will also feed back a signal that the air pressure of an airbag is low, resulting in a fault code. At this point, clear this fault code.

3, true fault, if the above two reasons are ruled out, then there may be a fault in the line, which should be repaired in time. The causes of this failure may be linear failures such as airbag, collision sensor and airbag hairspring.