BMW X6 Parking System Failure, Constant Beeping Issue

Hey there! I had a similar issue with my 2017 BMW X5 last summer (I have some experience working on cars, but nothing too advanced). The symptoms were exactly the same, constant beeping and non-functional parking assistant. Took it to my regular workshop and they diagnosed it as a faulty wiring connection to one of the parking sensors. Some cables had gotten loose and corroded over time. The fix wasn't too complicated, they replaced the damaged wiring and reconnected everything properly. Cost me about 95 Euro for the whole job, including labor. What's your mileage and have you noticed if this happens more in wet weather? Also, does the beeping occur immediately when you start the car or only when shifting to reverse? This info would help me understand if you're dealing with the same problem I had with my X5. If you want, I can share more details about what the mechanic specifically checked to diagnose the issue. Just let me know!

Thanks for the detailed response! Just got my car serviced last month at 68100 KM, and yeah, I'm noticing the beeping happens right when I shift to reverse, regardless of the weather. It's definitely getting annoying! It's good to hear yours was just a wiring issue, gives me hope it won't be too expensive to fix. Been googling BMW parking sensor problems all day and was worried it might be something major. Did your mechanic mention if this is a common issue with BMWs? Thanks for offering more details about the diagnosis, would love to hear more before I take it to the shop.

Oh hey again! Yeah, I remember when I had this exact headache with my X5. When my mechanic was working on it, he actually mentioned it's pretty common in BMWs, especially as they age. He told me these parking sensor issues often pop up around the 60-70K mark, so your mileage fits right in that range. Since you're getting the beeping right when shifting to reverse (just like I did), it's looking more and more like we had the same problem. My mechanic first thought it might be the sensors themselves, but after checking, he found that water had gotten into the wiring harness connector at the back. The corrosion was causing a false signal, making the system think something was always there. Something worth checking, if you pop open the trunk and look at the bumper area where the sensors connect, you might notice some green crusty stuff around the connectors. That's what gave it away in my case. Though I'd suggest letting a pro handle the actual fix since these systems can be pretty sensitive. Just a heads up, while my repair was relatively cheap, prices can vary depending on how much wiring needs to be replaced. But it's definitely not one of those wallet-destroying BMW repairs we all dread! Keep me posted on what you find out when you get it checked.

Thanks so much for all this info, super helpful! I just checked the trunk area like you suggested, and guess what? I can actually see some of that green stuff you mentioned around the connectors! Can't believe I didn't notice it before. This definitely makes me feel better about taking it to the shop now that I have a better idea what they should be looking for. Really relieved it's probably not going to be one of those crazy expensive BMW repairs. I'll make an appointment tomorrow and let them know about the wiring harness issue, should save some diagnostic time. Thanks again for sharing your experience, it's been really helpful! I'll definitely let you know how it turns out once I get it fixed.