Second Hand Mercedes-Benz SLK Airbag Control Module

This is a boundary question worth taking seriously: the R171 generation ran from 2004 to 2011, so both years fall within the same generation, which is a good sign for compatibility. However, airbag control modules are safety-critical parts that must be precisely matched to the vehicle's specific SRS system, and compatibility across production years within the same generation isn't guaranteed. Confirm the part number against your registration with the breaker before buying, and always have an airbag control module fitted by a qualified professional.

The R170 ran from 1996 to 2004 and the R171 from 2004 to 2011 — these are distinct generations with different SRS system architectures, so a straight swap is very unlikely to be compatible. Airbag control modules are generation-specific at minimum, and crossing that boundary significantly increases the risk of incompatibility with the restraint system. Always confirm compatibility against your exact registration with the breaker, and have the part installed by a professional given its safety-critical nature.

Yes, the SLK has been fitted with airbag control modules across all of its generations — the R170 (1996–2004), R171 (2004–2011), and R172 (2011–2020) — as standard equipment managing the SRS airbag and seatbelt pretensioner systems. Because the SLK is a two-seat roadster, its SRS setup differs from larger Mercedes models, so it's important to source a module from the correct generation. This is a safety-critical part, so professional fitting is strongly recommended.

For the airbag control module itself, generation is the primary compatibility factor rather than trim level — whether your SLK is a standard, SLK 200, SLK 350, or AMG variant doesn't fundamentally change the control module in the way it might affect interior trim or seat style. That said, certain trim levels may have had optional or upgraded airbag configurations, so you should still confirm compatibility against your registration with the breaker. Regardless of trim, always have this safety-critical component fitted by a qualified technician.

The R172 generation launched in 2011 and received a facelift in 2016, so a 2012 car is pre-facelift. Whether the facelift brought changes to the SRS system and airbag control module is something you should confirm with the breaker against your specific registration, as this is exactly the kind of detail that varies by production date and specification. Given that airbag control modules are safety-critical single-use components after deployment, professional fitting is essential regardless of which unit you source.

Airbag control modules are safety-critical components, and incorrect installation or a module that isn't properly matched to your vehicle's SRS system can cause airbags to fail to deploy or to deploy unexpectedly — both of which are extremely dangerous. It is strongly recommended that you have this part fitted by a qualified automotive technician or Mercedes specialist who can also carry out the necessary system coding and checks. Additionally, airbag components are single-use once deployed, so always ensure any used module you source has not been previously triggered — your breaker should be able to confirm this.