BMW iX2 Battery Drain: Rapid Discharge Issues & Solutions

Hey there! I had a similar issue with my 2022 BMW iX3 (also had an iX1 before). I've got some experience working with EVs, nothing professional though. The symptoms you're describing sound exactly like what I dealt with. After multiple attempts to charge and getting those frustrating error messages, I took it to my workshop. Turned out the battery sensor was defective, which was causing incorrect readings and rapid discharge. The repair cost me 315 Euro, but it fixed the problem completely. Before you assume it's the same issue though, could you share: How old is your battery? What specific error messages are you seeing? Does it happen more after the car sits unused for specific periods? This info would help determine if you're facing the same problem I had. The fix was pretty straightforward once they identified the issue, and my car's been running perfectly since then.

Thanks for sharing your experience! My iX2 is super new, I've only put 10746 KM on it since getting it earlier this year. The error message I'm getting is "Electrical System Malfunction" with a yellow warning light. It happens more frequently when the car sits overnight or for a full day. Had it serviced last week but the issue persists. Given how new the car is, I'm concerned this might be a manufacturing defect rather than normal wear and tear. I'll definitely mention the battery sensor possibility when I take it back to the dealer. This shouldn't be happening on a brand new EV, right?

Hey again! Wow, that error message and symptoms are eerily similar to what I experienced. But you're absolutely right, this definitely shouldn't be happening on such a new vehicle with such low mileage. Mine started acting up around 45,000 KM, which made more sense. After hearing about your mileage and the specific error message, I'm even more convinced it's the battery sensor. When I had the same "Electrical System Malfunction" warning, I initially thought it was just a unusual glitch since my car was relatively new too. But these sensors can fail even on brand-new vehicles, happened to a of mine as well with his iX3. Quick tip from my experience: make sure to document every time this happens (dates, conditions, etc.). When I brought mine in the first time, they tried telling me it was just normal battery behavior. Having all those details really helped push for a proper investigation, which ultimately led to finding that faulty sensor. Since your car is so new, this should definitely be covered under warranty. My repair was out of pocket since mine was older, but you shouldn't have to pay a cent. I'd be pretty firm with the dealer about this, it's clearly a manufacturing issue, not wear and tear. Let me know how it goes with the dealer. I'm really curious if it turns out to be the same sensor issue I had!

Thanks so much for all this detailed info! You're a lifesaver. I've already started keeping a log of when these issues occur, just like you suggested. Yesterday it happened again after sitting in my garage for just 8 hours, which is ridiculous for a new car. I've got an appointment with the dealer tomorrow morning, and I'm feeling much more confident now about pushing for a proper investigation. I'll specifically mention the battery sensor possibility and make sure they understand this isn't normal behavior for a nearly new iX2. The fact that your issue was solved with a sensor replacement gives me hope this can be fixed quickly. I'll definitely update you after the dealer visit. If it turns out to be the same sensor problem, your insight will have saved me and the technicians a lot of troubleshooting time. Really appreciate you taking the time to share your experience, it's exactly what I needed to hear!