BMW i8 Door Sensors Causing Lock System Chaos

I own a 2017 BMW i3 hybrid and experienced similar door sensor issues last month. Based on my garage visit, it turned out to be a faulty wiring harness connection between the door and the main body. The rubber boot that protects the wiring had deteriorated, causing intermittent connection problems with the door sensors. The mechanic found corroded connectors and damaged cables in the door jamb area. They had to replace the entire door wiring harness and reprogram the door control module. It wasn't a quick fix, took them almost a full day to complete the work. Though not a major mechanical issue, it's definitely something that needs proper attention since it affects safety features. My suggestion is to have a certified BMW technician check it out. These door sensor issues can be tricky to diagnose because the symptoms often point to multiple possible causes. Don't try DIY fixes on this one, the door control system is pretty complex in these hybrids.

Thanks for sharing your experience! That wiring harness issue sounds exactly like what I might be dealing with, especially since my symptoms match up with yours. I'm planning to take it to a certified BMW dealer next week. Just curious, do you remember roughly how much you ended up paying for the whole repair? And has everything been working smoothly since they fixed it? I want to make sure I'm prepared for what's coming, both for my wallet and my peace of mind!

Hey there again! Thanks for asking about the follow-up. I'm happy to report that since getting it fixed, my i3's door system has been working perfectly, no more unusual warnings or locking issues! Actually, my repair turned out to be much simpler (and cheaper!) than initially expected. The mechanic found it was just a faulty door contact signal caused by a damaged cable connection. Only cost me 95 € to fix, which was a huge relief since I was worried it might need the entire wiring harness replaced like they first thought. Trust me, I know how annoying these sensor problems can be, but getting it properly diagnosed by a BMW specialist was definitely the right move. Been driving for three months now without a single door warning message. Just make sure they thoroughly check all the connections, sometimes it's these simple fixes that solve what seems like a major problem. Hope you get the same good news when you take yours in! Let us know how it turns out.

Just wanted to update everyone about my BMW i8 door issue. Finally got it checked out at the dealership, and wow, what a relief! The problem wasn't nearly as bad as I'd feared. Turns out one of the door sensors had gotten damaged from water seeping in through a worn-out seal. The mechanic fixed the seal and replaced the faulty sensor, much simpler than a full wiring harness replacement. The whole thing cost about €300, which honestly felt like a bargain considering all the stress it was causing. Work took about three hours, and they even cleaned up some corrosion they found while they were at it. The car's running perfectly now, no more unusual door warnings, and the auto-lock is working like a charm again. Really glad I didn't try fixing it myself or go back to my old mechanic. Sometimes paying a bit more for a certified technician really does make all the difference. Thanks again for all the advice, you helped me avoid what could've been a much bigger headache!