Second Hand Mercedes-Benz Viano Airbag Control Module

Yes, all generations of the Mercedes-Benz Viano were fitted with an airbag control module (also called the SRS control unit) as standard, managing the front airbags, side airbags where fitted, and seatbelt pretensioners. The module is typically located under the centre console or beneath a front seat. Because this is a safety-critical component, it must be replaced by a qualified technician and cannot be reused once the system has deployed.

Both a 2006 and a 2010 Viano fall within the same W639 generation, which ran from 2003 to 2014 with a facelift in 2010, so there is a potential match in broad generation terms. However, the 2010 facelift introduced updates to the interior and safety systems, meaning a pre-facelift module from before 2010 may not be compatible with a post-facelift car's SRS system. You should confirm exact compatibility with the breaker by providing your registration number, as airbag module compatibility with the specific SRS system is something only the breaker can verify against the part number.

The Viano was sold in Ambiente, Trend, and Avantgarde trim levels, and while the trim primarily affects seat style, upholstery, and optional safety features such as additional side curtain airbags, the core airbag control module is broadly shared across the generation. However, because some trim levels were optioned with additional airbag circuits, the module's configuration may differ, so you should confirm with the breaker that the unit matches your specific trim and seat layout. This is particularly important if your Viano has rear side airbags or curtain airbags, which were more commonly fitted to higher trims.

No, the engine variant does not affect which airbag control module you need — this is an interior safety system tied to the vehicle's generation, trim, and SRS configuration rather than the powertrain. Whether your Viano is a 2.0, 2.2, or 3.0 diesel or a petrol variant makes no difference to module compatibility. Focus instead on confirming the generation, facelift status (pre- or post-2010 for the W639), and trim level with the breaker.

A used airbag control module is safe to fit provided it has never been triggered — once an airbag system deploys, the module is single-use and must not be reused. Always ask the breaker to confirm the module came from an undeployed, non-accident-written-off vehicle where possible, and have it installed and tested by a qualified technician who can carry out the necessary SRS system checks. This is a safety-critical repair and should never be treated as a DIY job.

The wheelbase variant (compact or long) affects the seating configuration and door count of the Viano but is unlikely to change the airbag control module itself, as the core SRS system architecture is shared across the W639 range. That said, long-wheelbase models with additional rear seating rows may have different pretensioner or side airbag configurations wired into the system. Confirm with the breaker that the donor vehicle matches your wheelbase and seat configuration to be sure the module covers the same airbag circuits as your car.