Captur MOST Bus Fault

That sounds like a real pain. MOST bus faults can be tricky. Since everything's dead, it's likely a crucial component. The MOST bus is a fiber optic network, right? A break or a faulty control unit could cause it. Has anything happened recently like an accident or water damage?

No accidents or water damage. Could a damaged fiber optic cable be the issue, or is a malfunctioning control unit more likely?

It could be the cable, but usually a faulty control unit is the problem. It's tough to diagnose without the right tools. With that kind of widespread system failure and the MOST bus error code, you're probably looking at a workshop visit. They'll have the equipment to properly diagnose which module is failing and causing the disruption. I would not try to fix this yourself, it can become expensive very quickly!

I took the Captur to a local garage, and they confirmed a defective control unit on the MOST bus, as suspected. The entire repair cost, including parts and labor, came to approximately 1000€. Thanks again for the advice.