First remove the airbag, check if the wiring harness connector is loose, re-insert it, and see if there is still a fault. If there is still a problem, it is a problem with the airbag hairspring. The hairspring costs tens of dollars to For one or two hundred yuan, just go to a 4S shop or repair shop to replace it.
There are generally 5 reasons why the airbag light is on:
1. The circuit is detached or the contact is poor
Solution: from simple to complex, from the air bag under the seat Check the wires and if the wire plugs are loose, just tighten them one by one.
2. Airbag sensor failure
Solution: Replace the driver's side airbag sensor.
3. Air bag failure
Solution: Check your seat belt sensor, air bag connector and air bag sensor.
4. Airbag computer failure
Solution: Replace the airbag control unit.
5. There is a fault code.
Solution: A special instrument is required to clear the fault code.
If water invades the airbag system and the airbag light comes on, this situation is not caused by water entering the airbag, but by faulty wiring or a short circuit inside the alarm light. When the airbag warning light is on, the airbags in the car will not work.
Extended information:
The correct use of airbags and related matters that need to be paid attention to, including the following aspects:
1 Under normal circumstances, people equipped with airbags When the ignition switch of a car is turned to the "ACC" or "ON" position, the system will perform the airbag self-test function. If the airbag warning light on the instrument panel is always on, it indicates that the airbag system is faulty and should be repaired.
2 When the car is equipped with dual front airbags, children are not allowed to sit in the front seat or a child seat is installed in this position. Because the impact of the airbag is beyond the ability of children, it will cause a certain degree of harm to children.
3 Do not hang accessories on the front windshield or interior rearview mirror. When the airbag deploys, hanging accessories will be impacted and fly towards the driver and passengers, causing unnecessary injuries.
4 Do not place hard or sharp objects between the airbag and the driver or the markings on the outside of the airbag. Otherwise, the strong impact force when the airbag is deployed will press them against the driver's body. , can also cause serious injury.
5 The final reminder is that it is best to choose safety lenses that are not easily broken for the eyes of the driver to avoid damage to the eyes and face when the airbag is deployed.
Reference materials:
Baidu Encyclopedia-Airbag