#SRS
7 posts in Car Diagnostics blog about "SRS" — OBD-II diagnostics, DTC codes, repair. ← All posts
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The horn does not work: switch, relay, or the clockspring
The horn, the steering wheel buttons, and the driver airbag all run through one component. Why they fail together.
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Seat belts: buckles, pretensioners, and the lamp you cannot ignore
The belt, not the airbag, is the primary restraint. The faults, the pretensioners, and why an SRS lamp disables the whole system.
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Child seats and airbags: the mistakes that cost the most
A rear-facing seat in the front with a live airbag is the most dangerous combination in a car. The rules and what the electronics see.
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After a minor collision: what to check even when it is "just a scratch"
An impact that did not deploy the airbags looks harmless. But bumper sensors, the radar, and the restraints module may have suffered — and it will surface weeks later, when the link to the accident is no longer obvious.
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The emergency call system: how it works, when it calls by mistake, and what the button does
The car calls the emergency services itself after a serious impact. How the system decides, why it sometimes calls for nothing, and what the dashboard lamp means.
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The black box in your car: what it records about you at the moment of a crash
The event data recorder captures a few seconds before impact: speed, pedals, seatbelts, steering angle. What is recorded, how long it survives, and who can access it.
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Rebuilt salvage cars: what OBD tells you about crash damage you cannot see
The bodywork was welded and painted, but the electronics remember everything. How to use OBD-II to find a silent airbag module, a donor unit from another car, uncalibrated driver assistance, and the fingerprints of flood damage.