Used Mercedes-Benz EQB Body Control Module

Yes, the EQB does have a Body Control Module (BCM), which manages a range of electrical functions including lighting, central locking, and comfort features — this is standard across all variants of the EQB regardless of drivetrain or power output. Because the EQB is a fully electric vehicle built on a dedicated platform, its BCM is closely integrated with the high-voltage and battery management architecture, which makes it more complex than on a conventional petrol or diesel Mercedes. Always confirm with the breaker that the donor part matches your exact registration before purchasing.

The Mercedes-Benz EQB (X243) launched in the UK in 2022 and has continued in production as a single generation without a significant structural facelift that would be expected to alter BCM architecture, so a unit from a 2022 model may well be compatible with a 2024 car. However, software versions and variant-specific configurations (such as EQB 250, 300 4MATIC, or 350 4MATIC) can affect whether a BCM will operate correctly in your vehicle, so this is not something that can be confirmed on specification alone. Always confirm with the breaker against your registration before buying.

It can matter, because the EQB 250 is a single-motor front-wheel-drive variant while the 300 4MATIC and 350 4MATIC are dual-motor four-wheel-drive variants, and the BCM in each may be configured differently to manage the additional drivetrain components and outputs. Unlike alloys or certain trim-level parts, a BCM is very much software- and configuration-driven, so a unit from a different drivetrain variant is not a straightforward swap. Confirm with the breaker that the donor vehicle's exact variant and build specification matches yours before proceeding.

Trim level alone is unlikely to change the fundamental BCM part number, as the BCM manages core vehicle functions that are common across the range rather than trim-specific features. That said, optional equipment fitted to a particular car — such as a panoramic roof, heated seats, or a specific MBUX configuration — can influence how a BCM is coded, even within the same trim. Confirm with the breaker that the donor car's optional equipment specification is as close as possible to your own vehicle.

In principle, used BCMs from the same variant can sometimes be recoded to a different vehicle, but on the EQB this process is non-trivial given the module's deep integration with the electric drivetrain, battery management, and Mercedes me connectivity systems. Independent specialists with the correct Star Diagnosis equipment or equivalent may be able to carry out this work, but it is not guaranteed, and some functions may remain restricted without dealer-level coding. We'd recommend discussing this with both the breaker and your intended fitter before purchasing the part.

The safest approach is to give the breaker your full registration number so they can check the donor vehicle's VIN, build date, variant, and optional equipment list against your own — these details matter far more for a BCM than they would for a mechanical part. Ask the breaker whether the unit has been tested and whether it is supplied with any coding data from the donor vehicle. Because fitment of a BCM is so configuration-specific, never assume a unit will work without this verification, and factor in coding costs with your chosen fitter.