BMW i4 Error Storm: Dashboard Warning Lights Mystery

Hey there! I had a similar issue with my 2017 BMW i3 last year. The multiple warning lights and error messages turned out to be an undervoltage problem in the low-voltage battery system, not the main EV battery. Had it checked at a certified shop where they diagnosed it with their diagnostic system. The 12V battery was failing to maintain proper voltage, which caused all sorts of electronic glitches. They replaced the battery and recalibrated the battery management system. The repair wasn't just a quick fix, they needed to keep the car for a couple of days to ensure all systems were properly reset and functioning. It was pretty serious since these electrical issues can affect critical safety systems. Worth noting that with that many kilometers, several components might need attention. Get it checked by a certified EV technician who knows BMW electric systems. Don't risk it with regular mechanics who might not have the right diagnostic tools for electric BMWs. Hope this helps!

Thanks so much for sharing your experience! I'm dealing with the exact same symptoms on my i4 right now. Mind if I ask what the repair ended up costing you? Also wondering if you've had any other electrical gremlins pop up since getting it fixed? Really appreciate the tip about finding a certified EV tech. Sounds like it's way more complex than I initially thought with the battery management systems and all that. Would love to hear if everything's been running smoothly since the repair.

Hey again! Happy to give you an update! Since my last post, I actually took my i3 to a certified BMW EV specialist and got it all sorted out. The undervoltage issue and fault memory lock were totally fixed, cost me 240€ all in, including the diagnostic work. Honestly, it was money well spent. The car's been running like a charm since then, no more warning lights or error messages popping up to freak me out! It's such a relief not seeing that dashboard light up every time I start the car. The certified tech really knew their stuff with these electric systems. I know you're worried about your i4, but trust me, once you get it properly diagnosed and fixed by someone who knows what they're doing with EVs, you'll be good to go. These cars are pretty solid once you sort out the electrical quirks. Just make sure whoever works on it has the right diagnostic equipment for BMW electric vehicles. Let me know how it goes when you get yours checked out!

Thanks for the detailed follow-up! Just wanted to update you on what happened with my i4. Finally got the nerve to take it to a certified EV specialist yesterday. Turned out you were spot on, it was also a low-voltage system issue. Apparently, these problems are more common in EVs than I thought! The repair cost me a bit more than yours, around 300 for the new battery and system recalibration. But honestly, it was totally worth it. The mechanic really knew his stuff and explained everything clearly. They had all the right diagnostic tools and even showed me what was causing all those warning lights. The best part? No more Christmas tree dashboard! Took it for a long drive today and everything's working perfectly. What a relief! Thanks again for pushing me to go to a certified tech, you saved me from probably making things worse with my old mechanic. Guess we both learned that sometimes you just need to bite the bullet and get things done right, especially with these high-tech EVs. Really appreciate all your help!