S90 Terminal 15 Ignition Issue

Sounds familiar! Check the fuse box first, then look for any voltage drop. Could be a circuit break somewhere. Give the battery terminals a good clean too just in case.

Thanks! When you say check for a voltage drop, where should I focus? Did you see corrosion or damage in specific areas of the wiring harness?

Yeah, it was a pain. Honestly, it's hard to pinpoint without proper tools. In my case, the issue was more complex than I thought. I'd say get it to a workshop; they'll diagnose it properly. Could save you a lot of time and frustration.

Took it to a technician. The Terminal 15 error was a defective cable connection. Repair cost 95€.