BMW XM Owners Report Door Lock System Malfunctions

Hey there! I had a similar issue with my 2021 BMW X6 M last year and it was super annoying. I've got some experience working on cars, but door electronics aren't really my thing. The symptoms were exactly like yours, unusual door messages, weird locking behavior. My workshop found that one of the door wiring harness connectors was loose and slightly corroded. They basically had to clean the connections and reseat the plug properly. The whole thing cost me 95 Euro and took about an hour to fix. Just curious, have you noticed if it's happening with all doors or just specific ones? Also, does it get worse in wet weather? These details really helped my mechanic pinpoint the issue faster. Hope this helps point you in the right direction. The XM is a different beast than my X6 M, but they share a lot of similar door electronics.

Thanks for sharing that experience! I'm also having issues with my XM (165492 KM) and it's mostly the passenger side doors giving me trouble. Actually, the problems seem worse during rainy weather, which makes me think your wiring harness suggestion could be spot on. Had my last service just two weeks ago but they didn't catch this issue. Might need to book another appointment and specifically ask them to check those connections. The unusual error messages are driving me nuts, especially during longer trips.

Hey again! Yeah, the rain connection definitely strengthens my suspicion about the wiring harness. After my initial fix on my X6 M, I actually had a similar issue pop up again about six months later, but this time it was affecting both passenger side doors. What I learned from my second round with this problem is that these connectors can be really tricky. The first fix was basically just cleaning and reseating, but the second time, my mechanic actually found that water was getting into the rubber grommet where the wiring passes through the door frame. They ended up replacing the whole grommet and adding some extra sealant. Since your XM has quite a few miles on it (mine was at around 145000 km when this happened), these rubber parts can definitely show their age. The fact that your service didn't catch it doesn't surprise me too much, unless you specifically mention the issue, they might not dig deep enough into the door electronics during routine maintenance. Quick tip: while you're waiting for your appointment, try gently opening and closing the door several times when you hear the error message. Sometimes this temporarily reseats the connection and can give you some relief. Worked for me as a band-aid solution until I could get it properly fixed.

Thanks so much for the detailed follow-up! That's really helpful about the rubber grommet, makes total sense considering the rain factor. I've actually noticed the error messages get less frequent when I close the doors more firmly, which fits with what you're saying about the connections. I'll definitely try that gentle open-close trick as a temporary fix. I've already called my workshop and booked an appointment for next week. Made sure to mention both the wiring harness and the rubber grommets specifically, so hopefully they'll check those first. Given the mileage on my XM, replacing those rubber parts sounds like a smart preventative measure anyway. Really appreciate you sharing your experience, saved me a lot of troubleshooting guesswork! I'll update the thread once I get it sorted, might help others with similar issues.