VEHICLE SYMPTOM GUIDE

An SRS light means the restraint system has detected a fault. It deserves proper diagnosis, not a resistor or code clear.

Airbag systems include airbags, pretensioners, occupancy detection, impact sensors, clocksprings, wiring and control modules. The warning should be investigated because parts of the restraint system may be disabled.

Tell us what’s happening →How diagnostics work
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DRIVING / SAFETY NOTE

Airbag circuits contain pyrotechnic devices. Do not probe or bypass them casually. Correct safety procedures and vehicle-specific information are important.

WHAT IT COULD MEAN

The symptom narrows the investigation. It does not prove the failed part.

Airbag systems include airbags, pretensioners, occupancy detection, impact sensors, clocksprings, wiring and control modules. The warning should be investigated because parts of the restraint system may be disabled.

Do not parts-cannon it.

A warning, noise or fault code can be caused by several different systems. Replacing the most commonly mentioned component online can cost more than diagnosing the cause properly.

POSSIBLE CAUSE CATEGORIES
01

Seat/pretensioner wiring or connector fault

02

Clockspring/steering-wheel connection fault

03

Occupancy or seat-position sensing fault

04

Impact sensor or wiring issue

05

Control-module supply, communication or stored crash data issue

HOW WE APPROACH IT

Evidence first, then the repair decision.

The exact tests depend on the vehicle, engine and fault, but the process should move from symptom → evidence → cause rather than code → part.

01Read SRS-specific fault information
02Inspect the relevant circuit/connectors using appropriate safety procedures
03Check wiring continuity/resistance only using manufacturer-safe methods
04Confirm repairs and system status after the fault is corrected
SYMPTOMWhat is the car actually doing?
→
TESTCodes, live data, electrical/mechanical checks.
→
CAUSEWhat evidence supports the diagnosis?
→
REPAIROnly then decide what needs replacing.
QUICK ANSWERS

Questions drivers often ask about airbag light.

Can the airbag still work with the light on?+

Some parts may remain functional, but the system has detected a fault and one or more restraint functions may be disabled.

Can I clear the airbag light for the MOT?+

Clearing a code without fixing the cause is not a repair. The warning can return immediately or after the fault recurs.

Are under-seat plugs a common cause?+

Seat wiring can be involved on some vehicles, but the stored fault and circuit should still be tested rather than assuming the connector is always the problem.

RELATED SYMPTOMS

Not quite the same problem?

⚡Battery Keeps Going FlatRepeated flat battery, slow cranking, charging concerns or the vehicle dies after standing.→!Engine Management LightEngine warning light on, with or without poor running, limp mode or another symptom.→ABSABS LightABS, traction-control or stability-control warning light on.→◈AdBlue WarningSCR/AdBlue warning, incorrect level, countdown to no-start or emissions-system fault.→
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