Used Mercedes-Benz GLA Airbag Control Module

The Mercedes-Benz GLA X156 generation ran from 2014 to 2019, with a facelift arriving around 2017, so a 2015 and a 2018 are both X156 but sit either side of that facelift boundary. Generation match is a good starting point for interior safety parts like this, but whether the module is compatible across the pre-facelift and facelift divide depends on the specific SRS system fitted — confirm this with the breaker against your exact registration before buying. Because airbag control modules are safety-critical single-use components, professional fitting by a qualified technician is strongly recommended.

The second-generation GLA (H247) launched in 2020 and is a completely different platform from the first-generation X156 (2014–2019), so the two generations are not interchangeable for interior electronics including the airbag control module. You must match the part to the correct generation — X156 for 2014–2019 cars, H247 for 2020 onwards. Always confirm the specific module reference with the breaker against your registration, and have the part fitted and the SRS system checked by a professional.

The airbag control module itself is primarily matched by generation rather than trim level, so Sport, AMG Line, and Executive variants are unlikely to differ in the module itself. That said, trim differences can affect seat types and belt pretensioner configurations within the SRS system, so confirm with the breaker that the module from a donor vehicle matches your specific trim's SRS setup. As a safety-critical component, always have it installed and the system verified by a qualified technician.

Yes — every variant of the Mercedes-Benz GLA, across both the X156 (2014–2019) and H247 (2020 onwards) generations, is fitted with an airbag control module (also called an SRS control unit) as standard. It manages the airbag and seatbelt pretensioner system throughout the car and is a safety-critical part. If yours has been triggered in an accident it will need replacing, as these units are single-use after deployment, and fitting must be carried out by a qualified professional.

Engine choice and whether the car is 4MATIC or two-wheel drive do not determine which airbag control module is fitted — this is an interior safety system matched by generation and trim configuration rather than drivetrain. Focus on getting the correct generation (X156 or H247) and confirming the SRS system compatibility with the breaker against your registration number. Professional installation is essential for any airbag-related component.

Airbag control modules are safety-critical components and are single-use after deployment, so a used unit must be sourced from an undeployed vehicle — the breaker should be able to confirm this. Fitting and SRS system reinitialisation must be carried out by a qualified technician; incorrect installation can cause airbags to fail to deploy or to deploy unexpectedly, both of which are dangerous. When contacting a breaker on Findapart, provide your full registration so they can verify the module reference and confirm compatibility with your car's specific SRS system.