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What causes the airbag indicator light to illuminate?

1 Answers

RachelFitz

07/29/25 3:51pm

The reasons for the airbag warning light turning red include normal self-check illumination, loose airbag wiring harness connectors, and improperly installed system components. Below are detailed explanations for these causes: Normal self-check illumination: Every time the ignition switch is turned on, various indicator lights on the instrument cluster will illuminate. If there is a system issue, the warning light will remain on; otherwise, it will automatically turn off. Loose airbag wiring harness connectors: During vehicle use, the airbag warning light may suddenly illuminate due to loose connectors in the airbag wiring harness located under the seat. Frequent seat adjustments can cause these connectors to occasionally disconnect. Alternatively, issues with various sensors in the airbag system or the airbag control unit may also trigger the warning light. Improperly installed system components: If the ignition switch is turned on before airbag system components are properly installed after certain vehicle disassembly procedures, the airbag control unit will record a fault code, causing the airbag warning light to illuminate. In this case, the issue can be resolved by properly installing the components and clearing the fault code.

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