Second Hand Mercedes-Benz CLS Airbag Control Module

The CLS has two main generations: the first-generation C219, built from 2004 to 2010, and the second-generation C218, built from 2011 to 2018 (with a facelift in 2014). Modules from within the same generation are more likely to be compatible, but crossing the C219-to-C218 boundary is unlikely to work due to differences in the SRS architecture. Always confirm compatibility with the breaker against your exact registration before buying.

The C218 was facelifted in 2014, and while both sit within the same generation, the SRS system configuration may differ across that facelift boundary. You should treat pre- and post-facelift modules with caution and confirm with the breaker whether the specific module matches your car's SRS setup using your registration. Never assume a module will simply plug in and function correctly without verification.

Yes, every variant of the Mercedes-Benz CLS — across both the C219 (2004–2010) and C218 (2011–2018) generations — was fitted with an airbag control module (also called an SRS control unit) as standard. The engine type makes no difference here; this is a core safety system fitted to all models. If you are replacing one, professional fitting is strongly recommended as airbags and associated seatbelt pretensioners are safety-critical components that are single-use after deployment.

Trim level can influence the SRS system on the CLS because higher-spec trims may include additional airbags or seat configurations that affect how the module is programmed. Whether the module from one trim level will work correctly on another is something you should confirm with the breaker against your registration, as pretensioner variants and airbag counts can differ. Do not assume modules are interchangeable across trims without that check.

A used airbag control module from a Mercedes CLS will almost certainly require programming or coding to your vehicle before it will function correctly, and this must be carried out by a qualified technician with the appropriate diagnostic equipment. Airbag systems are safety-critical, so professional fitting is essential — do not attempt to fit one yourself. Confirm with the breaker that the unit has not been previously deployed or fault-flagged, as a deployed or damaged module should never be reused.

The C218 generation was offered in both a four-door coupe and a five-door Shooting Brake body style, and differences in the number of doors and seat layouts between these variants could affect the SRS system configuration. Confirm with the breaker that the donor car matches your body style and trim, and always provide your registration so they can verify the module against your specific SRS setup.