Multifunction steering wheel issue

Before diving into cable replacements, have you checked the basics like the steering column module? It's like the central nervous system for the steering wheel controls. An electrical fault in the wiring harness that connects the steering wheel to the car's main system could be a culprit, it's more common than a fault inside the wheel. What error code are you seeing in the error memory

When you say 'steering column module', are you referring to the clock spring, that thing that allows the steering wheel to rotate while maintaining electrical connection? The error code is B10A215. Does that error code give you any additional clues

The clock spring is part of the steering column module, but the module itself is more than just the clock spring. B10A215 points to a circuit issue within the steering wheel control module itself. It's very likely there's a bad connection or a faulty component inside the steering wheel. Given the code and your symptoms, I'd recommend getting it properly diagnosed by a workshop. It's probably not something you can easily fix at home

Took it to a local shop, and you were spot on. They confirmed a defective cable connection within the steering wheel. Repair cost 95€, which is honestly less than I feared. Cheers for pointing me in the right direction