BMW iX3 Parking System Failure: Causes & Solutions

Hey there! I have some experience working on EVs. Had a similar issue with my 2019 BMW i4 (my second BMW after the iX). The parking sensors went crazy on mine too, constant false alerts and the assistant completely stopped working. Took it to my workshop and turns out it was just a loose connection in one of the sensor cables. The mechanic found it pretty quickly, they had to check all the wiring harnesses connected to the parking sensors. Total bill was 95 Euro for diagnosis and fixing that faulty connection. Could you share if you're getting any specific error messages on your display? Also, did this start suddenly or was it gradual? This info would help me understand if you're dealing with the same issue I had. It's usually a straightforward fix if it's just a connection problem, but best to get it checked soon before it causes more trouble.

Thanks for sharing your experience! My issue actually started quite suddenly, was perfectly fine during my morning commute, then started acting up in the evening. Getting error code "Park Assist malfunction" on the display. Really hoping it's just a connection issue like yours and not something more serious. Just had my service at 143262 KM, and everything was working great then. Might call the workshop tomorrow since this is getting pretty annoying, especially when parking in tight spots.

Hey again! Oh that sounds exactly like what happened to my i4! When you mentioned it started suddenly, it really rings a bell, mine also went from perfect to problematic in just one day. That same error message too, "Park Assist malfunction." Since I've already been through this with my car, I'd definitely recommend getting it checked asap. In my case, waiting would've only made things more frustrating, especially since I rely on those parking assists quite a bit. Actually, after I got mine fixed, I learned that sudden failures like this are often electrical rather than sensor failure. The timing of yours (right after a service) makes me think they might have disturbed a connection while doing other work. When they serviced my car last year, something similar happened, they had accidentally knocked a connector loose while checking something else. I'd suggest mentioning the recent service when you take it in. Could save them some diagnostic time, and might even be related to the work they did. Let us know what they find, always good to know if it's the same issue I had or something different!

Thanks so much for all this info, it's really reassuring to hear your similar experience! Just called the workshop and got an appointment for tomorrow morning. I mentioned the recent service like you suggested, and they seemed particularly interested in that detail. You're probably right about the connection getting knocked loose during the service, makes total sense why it would start acting up suddenly. Really appreciate you taking the time to share your experience. It's definitely put my mind at ease knowing it might just be a simple wiring issue rather than something major with the sensors themselves. Keeping my fingers crossed it'll be a quick fix like yours was. I'll be sure to update everyone here once I know what the problem is, might help someone else down the line dealing with the same issue.