BMW iX Parking System Malfunction: Causes & Solutions

Hey there! I have some experience with EVs and had a similar issue with my 2020 BMW i4 (I also considered the iX3 at the time). Last month, I faced exactly the same problem with the parking sensors going crazy. Turns out, it was just a loose connection in the wiring harness for the parking sensors. My workshop found that one of the cable connectors wasn't properly seated, causing all sorts of false alarms. The fix was pretty straightforward, they reconnected and secured the cables properly. Cost me 95 Euro for the diagnostic and repair work. The car's been working perfectly since then. Could you share if you've noticed any pattern when this happens? Like does it occur more after driving in rain or washing the car? Also, which trim level is your iX? This might help pinpoint if it's the same issue I had.

Thanks for sharing your experience! My iX just hit 51487 KM and recently had its routine service. I've noticed the beeping happens consistently regardless of weather conditions. It's interesting you mention the wiring harness, I've got the xDrive50 trim and haven't had any other electrical issues until now. Your fix sounds promising and way less expensive than I feared. Did your workshop need to order any special parts, or was it purely a reconnection job?

Thanks for the follow-up! Yeah, in my case, it was purely a reconnection job, no parts needed at all. The workshop just had to trace the wiring back to the connection point, which was hidden behind some trim panels. They also applied some dielectric grease to protect the connection from future issues. Since you mentioned you've just had routine service, it's possible someone might have accidentally disturbed the wiring during the work. That's exactly what they suspected happened with mine, some previous maintenance work had slightly dislodged the connector. The fact that it's happening consistently in your case (rather than intermittently like mine did initially) actually makes me more confident it's a similar wiring issue. The consistent beeping usually points to a clear connection problem rather than a failing sensor, which would typically show more unusual behavior. One quick thing you might want to check before heading to the workshop, have a look at the bumper where the sensors are. Make sure there's no visible damage or scratches around the sensor areas. On my i4, the sensors were all pristine, which helped confirm it was indeed a wiring issue. Let me know how it goes, I'm curious if it turns out to be the same problem!

Thanks so much! I just checked the bumper sensors like you suggested, and they all look perfectly fine, no scratches or visible damage. That's really reassuring to hear it might just be a wiring issue. I've actually booked the car in for next week, and I'll definitely mention your experience to them. It makes total sense that something could have been knocked loose during the recent service. My dealership quoted me a much higher potential repair cost because they thought it might need new sensors, so I'm feeling much more optimistic now. I'll update the thread once I get it sorted. Really appreciate you taking the time to share all these details about your experience, it's been super helpful!