Used Mercedes-Benz EQB Airbag Control Module

Yes, the EQB is fitted with an airbag control module (also called the SRS control unit) as standard across all variants — it manages the full airbag and seatbelt pretensioner system just as it would on any other modern Mercedes-Benz. Being an all-electric model makes no difference here; the absence of a combustion engine has no bearing on the SRS system. All EQB variants from launch carried this unit, so sourcing one from a breaker is straightforward provided the other fitment details match.

The Mercedes-Benz EQB (X243) launched in the UK in 2022 and represents a single generation with no confirmed major mid-life facelift producing a new generation boundary within that period, so modules from across the 2022-onwards production run may share the same generation architecture. However, whether a specific module from a 2022 car is fully compatible with the SRS system configuration of a 2024 car is something you must confirm with the breaker against your exact registration, as software calibration and pretensioner variants can differ. Never assume compatibility on a safety-critical component without that check.

Trim level can influence the SRS system on the EQB because different trims may feature different seating configurations (for example, the seven-seat layout available on certain grades affects the number of airbag zones the module manages), so it is worth noting your trim when approaching a breaker. The EQB is offered in trims including Sport, AMG Line, and AMG Line Premium in the UK market; if your car is a five-seat version and the donor car was also a five-seat version of the same trim family, the module is more likely to be a match. Always confirm the specific SRS system compatibility with the breaker against your registration before purchasing.

No — the drivetrain variant (250, 300 4MATIC, or 350 4MATIC) does not determine which airbag control module the EQB uses, as the SRS system is dictated by body structure, generation, and trim rather than the electric motor configuration. You do not need to match the motor output when searching for this part. Focus instead on generation, trim level, and seat count, and confirm the specific module compatibility with the breaker against your registration.

Airbag control modules are safety-critical components and professional fitting by a qualified technician is strongly recommended — incorrect installation can prevent airbags from deploying in a collision or cause accidental deployment. When buying from a breaker, confirm that the module has not been previously triggered, as the SRS system records crash events and a used module from a written-off vehicle may be locked or require specialist resetting. Always have the unit coded and checked by a Mercedes-trained or SRS-specialist technician after fitting.

The EQB is sold exclusively as a five-door SUV in the UK, so door count is not a variable you need to worry about when sourcing this part for this model. The more relevant variables are generation, trim level, and whether your car is the five-seat or seven-seat configuration, as these affect the scope of the SRS system the module controls. Confirm all these details with the breaker against your registration to maximise the chance of a correct match.