Cheap Mercedes-Benz Vito Airbag Control Module

Yes, all generations of the Mercedes-Benz Vito van are fitted with an airbag control module (also called the SRS control unit or airbag ECU) as standard, controlling the driver and passenger airbags and seat belt pretensioners. It is located under the centre console or beneath a seat depending on the generation. Because it is a safety-critical component, professional fitting is strongly recommended, and you should never fit a module that has previously been deployed — it is a single-use part.

The W638 (1996–2003) and W639 (2003–2014) are entirely separate generations with different SRS architectures, wiring, and connector configurations, so a module from one will not be compatible with the other. You must source a module from the correct generation to match your vehicle. Confirm the exact compatibility with the breaker using your registration number before purchasing.

The W639 ran from 2003 to 2014, with a facelift in 2010 that introduced updates to various electrical systems. Modules from pre-facelift and post-facelift W639 vans may share the same generation platform, but whether the SRS system variants are interchangeable across that 2010 boundary is something you should confirm with the breaker against your exact registration before buying.

Trim level — whether your Vito is a base panel van, Sport, or Tourer passenger variant — can affect the number and type of airbag channels the module manages, since seat and curtain airbag configurations vary by trim. The core fitment match is generation first, then trim type, so always tell the breaker your exact trim alongside your registration. Engine choice does not affect airbag module compatibility.

Door count itself is less critical for the module than the seating and airbag configuration, which can vary between a short-wheelbase panel van and a long-wheelbase Tourer with multiple rows of seats and additional side airbags. The breaker will need to know your body style, wheelbase, and trim to identify a module with the right channel configuration for your SRS system. Always confirm the specific SRS variant compatibility with the breaker against your registration.

Airbag control modules are safety-critical components and working on SRS systems carries a real risk of accidental airbag deployment if the system is not properly isolated — professional fitting by a qualified technician is strongly recommended. A used module will also typically need coding or programming to your vehicle's VIN, which requires specialist diagnostic equipment. Never fit a module that shows signs of previous deployment or crash damage, as airbag components are single-use.