Mercedes-AMG Airbag control module replacement
Engine, Fuel & Emissions system·Mercedes-AMG repair guide · All models
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What is this repair?
Plain-English overview
Airbag system repairs — including SRS control module, impact sensors and occupant detection mats — are safety-critical. An illuminated airbag light means the system may not deploy in a collision. Replacement modules must be coded to the vehicle; used modules are not suitable for airbag systems.
Warning signs
How to tell your Mercedes-AMG needs this repair
- Airbag warning light illuminated (SRS light)
- Fault codes relating to a specific impact sensor, clock spring or module
- Seat occupancy sensor triggering airbag-off light incorrectly
- Post-accident SRS module replacement required (crash data stored)
- Clock spring fault causing airbag and steering wheel controls to fail together
Common causes
Why Mercedes-AMG vehicles need this repair
- 1.Normal component wear over high mileage
- 2.Oil maintenance quality and adherence to change intervals
- 3.Operating temperature and thermal cycling over time
- 4.Age degrading seals, gaskets and rubber components
What affects the price
Why your quote may differ
- Whether the module needs replacement or just reprogramming/resetting (cheaper)
- Sensor location — some are in bumpers and combine with park sensors
- New vs remanufactured module (used modules cannot be reused for safety reasons)
- Dealer-only coding in some cases
Risks of ignoring this
What happens if you delay
- A minor issue becoming a significantly more expensive repair if ignored
- Secondary damage spreading to related components
- Possible roadside breakdown or sudden failure
- Failed roadworthiness inspection or MOT
Full repair guide
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