Used Mercedes-Benz EQB Door Lock Mechanism

The EQB is a five-door SUV, so the key details you need are which door the mechanism is from (front or rear) and which side — NS (nearside, passenger/left) or OS (offside, driver/right). The EQB was introduced in 2022 and has remained in one generation in the UK market to date, so generation is straightforward for now. Give the breaker your full registration so they can confirm the exact door position needed.

The EQB launched in the UK in 2022 and sits within a single generation running through to the current model, so parts from within that range are likely to be compatible in principle. However, Mercedes-Benz can introduce mid-cycle updates that affect mechanisms without a formal facelift announcement, so always confirm with the breaker against your specific registration before purchasing. Side and door position (front NS, front OS, rear NS, rear OS) must still match exactly.

Trim and drivetrain level do not affect door lock mechanism fitment — the mechanism is determined by the door position (front or rear) and side (NS or OS), not by whether the car is a 250 or a 350 4MATIC. You may find minor cosmetic differences around door furniture between trim levels, but the lock mechanism itself fits the same door frame. Confirm the door position and side with the breaker and you should be fine.

No — door lock mechanisms are part of the door structure and are not related to the drivetrain or powertrain in any way. The EQB being fully electric makes no difference to door lock fitment compared to any equivalent petrol or diesel Mercedes SUV of the same body style. What matters is the generation, the door (front or rear), and the side (NS or OS).

Yes, front and rear door lock mechanisms are different parts and are not interchangeable with each other. On the EQB, you also need to specify the side — NS (nearside, left/passenger) or rear NS, or OS (offside, right/driver) or rear OS — as the mechanism is mirror-imaged between sides. Make sure you tell the breaker exactly which of the four doors you need the part for.

The EQB shares its platform and body structure with the GLB, and door lock mechanisms may well be interchangeable between the two models, but this is something you should confirm with the breaker directly against both registrations rather than assume. If the breaker can cross-reference the part number against your EQB's VIN, that is the most reliable way to verify compatibility. Never assume a part fits based on platform similarity alone without checking.