Used BMW iX ECU

Yes, every variant of the BMW iX has at least one ECU (Engine Control Unit / control module), though because the iX is a fully electric vehicle it uses a power electronics control unit rather than a traditional combustion engine ECU. The control module manages the electric motors, inverter, and drivetrain rather than fuel injection or ignition. When searching, make sure you and the breaker are clear on exactly which control unit you need, as the iX has multiple modules across the drivetrain and battery system.

The BMW iX (U11 generation) launched in the UK in 2022 and has continued in production, so a 2022 and 2023 car sit within the same generation. Fitment is more likely to be compatible than not, but because electric vehicle control units are typically paired to the vehicle via coding and are tied to the battery management and immobiliser system, you must confirm with the breaker against your exact registration before buying. Never assume a direct swap without checking this first.

Yes, very likely — the xDrive40 uses a different motor and inverter output to the xDrive50, so the control unit calibrated for one drivetrain is unlikely to be correct for the other. Always match the sourced unit to your exact variant and confirm this with the breaker using your registration. Trim name alone is not enough; the breaker will need to cross-reference the part number from the donor vehicle.

No — the iX M60 is a higher-output performance variant with different motor units and power electronics, so its control modules are specific to that version and will not be interchangeable with the xDrive40 or xDrive50. If you have an M60, tell the breaker explicitly so they can source from an M60 donor car. Fitting a unit from a lower-output variant would not be correct for your vehicle.

This is very likely, as BMW iX control units are generally paired to the vehicle during manufacturing and may be linked to the immobiliser and high-voltage battery system — but whether your specific unit requires coding and what that involves is something you must confirm with the breaker and a BMW-qualified technician before purchasing. Buying a used unit without a clear plan for coding could leave you with a part that cannot be made to work in your car. Always factor in coding costs when budgeting for this repair.

Yes, the BMW iX retains a 12V electrical system alongside its high-voltage drivetrain, and there are multiple lower-voltage control modules across the car covering functions such as body electronics, comfort systems, and charging. The part you need will depend entirely on which system has failed, so it is worth getting a diagnostic read-out of the fault codes before approaching a breaker, as this will help identify the exact module reference. Share that reference with the breaker alongside your registration to get an accurate match.