The airbag light is always on. What happened?
There are still many airbag lighting failures in automobile maintenance. The fault light is on. Of course, there is something wrong with the airbag system, and there are not many reasons for the failure. Here is a brief introduction to the causes and solutions of airbag luminescence.
Airbag system, also known as auxiliary restraint system, is mainly composed of two parts, one is seat belt pretensioning mechanism, and the other is airbag, which is mainly composed of collision sensor, airbag indicator light, airbag computer and airbag. The working principle is unknown. The plugs (connectors) that connect these important parts are equally important. Some plugs are specially equipped with a double locking mechanism to ensure a more reliable connection. The plug of the airbag system is yellow to distinguish it from other plugs.
The most common fault of airbag circuit is the fault of steering wheel flying rim. Usually, the hairspring inside is broken, and the steering wheel of the car keeps turning. There is a hairspring inside that can slide with the rotation of the steering wheel to ensure that the airbag, steering wheel control buttons, speakers and other equipment can work normally while the steering wheel rotates. This mechanism is likely to fail after a long time. Many cars have airbag switches, some in the glove box and some beside the glove box. If this switch is turned off by mistake, the airbag light will always be on and need to be checked.
The reasons why the car airbag light comes on are as follows:
Normal self-inspection lighting: every time the ignition switch is turned on, the indicator light in the instrument will basically light up. If there is a problem with the system, the indicator light will always be on, and if there is no problem, it will automatically go out; During the use of the car, the airbag light suddenly lights up: it is often encountered that the airbag harness plug on the side of the car seat is virtually connected;
After the vehicle is disassembled in some places, because the airbag system components are not installed properly, turn on the ignition switch, the airbag adjustment unit will record the fault code and light the airbag light. If the airbag light is always on, it will not affect normal driving. You can drive it to a repair shop or 4S shop and check it with a diagnostic computer.