Second Hand Mercedes-Benz C-Class Airbag Control Module

This is a critical boundary to be aware of: the W204 generation ran from 2007 to 2014, with a facelift in 2011, so a 2010 car is pre-facelift and a 2014 car is post-facelift — both sit within the same W204 generation, but whether the module is compatible across the facelift boundary is something you must confirm with the breaker against your exact registration, as SRS system variants can differ. The airbag control module is a safety-critical component and professional fitting by a qualified technician is strongly recommended. Never attempt to fit a used airbag module without verifying full compatibility first.

The W204 ran from 2007 to 2014 and the W205 from 2014 onwards — these are entirely separate generations with different SRS architectures, so a module from a W205 will not be a straightforward swap into a W204. Generation is one of the most important fitment factors for interior safety electronics like this. Confirm the exact part reference with the breaker against your registration before purchasing.

Trim level is worth flagging to the breaker — the C-Class was offered in trims including SE, Sport, AMG Line, and Avantgarde across different generations, and while the core SRS control module is generally shared across trims within the same generation, pretensioner variants and seat configurations can differ by trim and these differences may affect compatibility. Always confirm the specific SRS system compatibility with the breaker against your registration rather than assuming trim is irrelevant. This is a safety-critical part, so professional fitting is essential regardless of which unit you source.

The C-Class has been offered in saloon, estate, coupe, and cabriolet body styles across its generations, and door count or body style can influence the SRS system configuration — for example, a coupe may have a different curtain airbag setup to a saloon. You should tell the breaker your exact body style and registration so they can match accordingly. As with all airbag components, professional fitting is a must.

Airbag control modules are safety-critical components and Findapart strongly recommends professional fitting by a qualified technician — this is not a DIY job. The SRS system must be correctly configured and tested after any module change, and an incorrectly fitted or mismatched module could result in airbags failing to deploy or deploying unexpectedly. A professional will also be able to confirm the module is compatible with your specific vehicle before installation.

Engine type does not affect airbag control module fitment — whether your W204 has a diesel or petrol engine makes no difference to which module you need. What matters is the generation (W204, 2007–2014), body style, and potentially the specific SRS system fitted, which can vary in ways that are not always obvious from the outside. Confirm compatibility with the breaker against your registration to be sure you're getting the right unit.