* Faulty Airbag Sensor: These sensors detect impact and trigger the airbag deployment. A malfunctioning sensor will trigger the light.
* Faulty Airbag Control Module (ACM): This is the "brain" of the airbag system. Internal failures or damage to the ACM can cause the light to illuminate. This is often the most expensive repair.
* Wiring Issues: Damaged, frayed, or disconnected wiring in the airbag system can interrupt the circuit and cause the light to come on. This could be anywhere in the system, from under the seats to the steering wheel.
* Faulty Clock Spring: This is a spiral cable in the steering column that allows the airbag and other components to turn with the steering wheel. A break in this spring interrupts the circuit.
* Deployment Sensor Issues: The sensors that detect the deployment of the airbags (to prevent accidental re-deployment) can also malfunction and trigger the light.
* Low Voltage: Sometimes a low battery voltage can briefly trigger the light. While this usually goes away, it suggests a more serious underlying problem that needs attention.
* Seatbelt Buckle Switch: While less common, a problem with the seatbelt buckle switch can trigger the airbag light in some models.
* SRS System Fault (Supplemental Restraint System): This is a generic term covering various problems within the system.
Why you shouldn't ignore it: A malfunctioning airbag system could mean your airbags won't deploy in an accident, significantly increasing your risk of injury.
What you should do:
* Don't attempt to fix it yourself: The airbag system is complex and working on it incorrectly can be dangerous.
* Take it to a qualified mechanic: A mechanic with experience in automotive electrical systems and airbag systems is necessary for proper diagnosis and repair. They will use a scan tool to read the diagnostic trouble codes (DTCs) stored in the airbag control module, which will pinpoint the problem.
* Get multiple quotes: Compare prices from different reputable mechanics before proceeding with repairs.
Ignoring the airbag light is a serious safety risk. Get it checked out as soon as possible.
