Vehicle Questions and Answers
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If the check engine light is on in your BMW, I suggest using an OBD II scan tool to identify the issue. This tool can read the codes stored in your car's ECU when a fault is detected. If you see code A0B2, it indicates a fault in the car access system, which usually means the CAS lost power at some point. This is often linked to a problem in the fuse box. I recommend inspecting the CAS fuse to ensure it is not blown. If that is not the problem, check the wiring for any short circuits between the fuse panel and the CAS.
In a BMW, if the code A0B2 appears, it indicates an issue with the CAS supply terminal.
Is the CAS module the largest one? Positioned beneath the spare tire?
I have a code showing on my BMW 320d, but there are no ignition lights and the steering lock won't disengage. The red steering lock light is illuminated.