BMW iX Signal & Xenon Issues: Multiple System Failures

Hey there! I had a somewhat similar problem with my 2021 BMW i4 (previously owned the i3 too). I've got some experience working with EVs, though I'm no expert. The symptoms you're describing sound familiar. I had issues with error messages and funky lighting behavior. Turned out to be a faulty connection in the wiring harness that controls both the lighting system and sends signals to the dashboard. My workshop found that one of the main cable connectors was loose and slightly corroded. The fix was pretty straightforward, they had to clean the connection points and secure them properly. Cost me about 95 Euro, and it solved all the weird electrical gremlins. Before I can give you more specific advice, could you share: Which error codes you're getting? When did these issues start? Have you noticed any pattern when the problems occur (like when it's raining or after the car sits for a while)? Let me know these details, and I might be able to help further!

Thanks for sharing your experience! I'm having the exact same symptoms with my iX at 52424 KM. The error messages started appearing last week after a heavy rainfall. Haven't done any fixes yet as I wanted to gather some community insights first before heading to the workshop. I'll definitely have them check the wiring harness connections based on what worked for you. That repair cost sounds way better than what I was worried it might be. Did your warranty cover any of it? Mine's still under warranty, but I'm not sure if this type of issue is covered.

Hey again! Yeah, these electrical gremlins can be tricky, especially after heavy rain. On my i4, the issue first showed up around 48000 KM, so pretty close to your mileage. About the warranty, mine wasn't covered because they found some water damage that they said was due to "environmental factors" rather than a manufacturing defect. Kind of annoying, but at least the repair itself wasn't too expensive. However, your situation might be different since you've got a newer model. Quick tip from my experience, if you're heading to the workshop, try to document when exactly the errors appear. Like in my case, I noticed the purple xenon tint was more visible during early morning starts, and the error messages would pop up more frequently after the car sat overnight. This info helped the techs diagnose it faster. Also, make sure they do a thorough check of all the connection points, not just the obvious ones. After my first repair, I had a minor issue come back because they missed a secondary connection point. Had to go back, but they fixed it for free since it was related to the initial repair. Let me know how it goes with your iX, would be interesting to hear if it's the same root cause as mine.

Thanks so much for all those details! Just got back from the workshop and wanted to update. You were spot on, it was indeed a wiring harness issue on my iX. The technicians found multiple connection points that had moisture damage, exactly like you described. They were really helpful once I mentioned the symptoms you'd experienced with your i4. Good thing I took your advice about documenting when the errors appeared. Told them about the morning starts and overnight patterns, which helped them zero in on the problem areas quickly. The best part? Unlike your situation, they actually covered it under warranty since they found a small manufacturing defect in one of the seals that had allowed moisture to get in. They did that thorough check you mentioned and found a couple of other connections that were starting to show early signs of corrosion. Fixed those too while they were at it. The whole repair took about four hours, but at least I won't have to deal with those annoying purple lights and error messages anymore. Really appreciate you sharing your experience, it definitely helped me approach the repair with more knowledge and confidence. These electric BMWs are amazing cars, but sometimes these little electrical quirks can be pretty confusing without some community insight!