BMW M2 Dies While Driving: Ignition Switch Suspicions

Hey there, fellow BMW owner! Had a similar situation with my 2017 BMW M4 last year. The symptoms you're describing match exactly what I experienced, unusual stalling, rough idling, and starting issues. Initially thought it was the ignition switch too, but turned out to be a blown fuse in the main relay circuit causing intermittent power supply issues. The diagnostic showed the main relay was drawing excessive current, which kept blowing the fuse. The fix wasn't particularly complex, needed a new relay and fuse replacement. However, the tricky part was diagnosing it correctly since these symptoms can point to multiple issues. It wasn't a serious repair, but definitely something that needed immediate attention since it affects the entire electrical system. My advice? Get it checked soon because driving with these symptoms could leave you stranded somewhere. These issues usually don't fix themselves and tend to get worse over time.

Thanks for sharing your experience with the relay circuit issue. That's really helpful! I had my car looked at yesterday and they're leaning towards a similar electrical problem, though they want to run more tests. Would you mind sharing how much you ended up paying for the repairs? Also, has everything been running smoothly since the fix, or have you noticed any other quirks?

Hey again! Glad I could help out with sharing my experience. After seeing your update, I thought I'd let you know that my M4 has been running like a dream since getting it fixed. The ignition switch problem completely disappeared after they sorted out that pesky relay circuit issue and replaced the faulty fuse. The total bill came to 52€ for parts and labor, which honestly wasn't bad considering how much I was worrying it might cost! The fuse replacement was straightforward once they figured out what was wrong. I've put about 15,000 km on the clock since the repair and haven't had a single problem, no more stalling, no rough starts, nothing. It's like having a brand new car again. Just goes to show sometimes it's the simple things that can cause the biggest headaches, right? If your mechanics are seeing similar electrical issues, you're probably looking at a comparable repair cost. Hope they get it sorted quickly for you! Let me know how it turns out.

Just wanted to update everyone on my BMW situation! Finally got the car back from the shop today, and you were spot on, it was an electrical issue, but slightly different from yours. The technician found a corroded wire harness that was causing all those problems. The repair cost me a bit more, around 180€ total, since they had to replace the entire harness section. But honestly, I'm just relieved it wasn't something more serious with the engine. The mechanic I ended up going to was really thorough and even showed me the damaged parts. The car's running perfectly now, no more sudden stalling or rough starts. Took it for a good test drive and it feels like I've got a different car! Thanks again for sharing your experience, it really helped me stay calm knowing someone else had dealt with similar issues. Now I can finally enjoy driving my M2 again without constantly worrying about getting stranded!