BMW Diesel Warning Light Storm, Memory Lock Issue?

Hi there! I had a similar issue with my 2006 BMW 3 Series diesel last year. I've got some experience working on cars, but electrical issues always make me nervous. My car showed multiple warning lights too, and it turned out to be an undervoltage problem. The workshop diagnosed it and found that the battery was struggling to maintain proper voltage, which caused various systems to trigger warnings. The fix cost me around 240 Euro, including diagnostics and a new battery installation. For your 1 Series, could you share what specific warning lights came on? Also, are you experiencing any starting issues or electrical glitches? This would help me understand if you're dealing with the same problem I had. If you want, I can tell you more about what symptoms my car showed before the repair. The 1 and 3 Series share quite a few electrical components, so it might be relevant to your case.

Thanks for sharing your experience! My BMW is showing similar symptoms to what you described. Currently at 115201 KM and had its last service two months ago. Haven't noticed any starting issues yet, but I'm getting the engine management light, ABS, and traction control warnings all at once. Also seeing some weird behavior with the interior lights flickering occasionally. Sounds like I should get the battery voltage checked first before diving deeper into other potential issues. Did your warning lights all come on at the same time too?

Yeah, that's exactly how mine started! The warning lights all came on within the same day, it was like a Christmas tree on my dashboard. The flickering interior lights are definitely a red flag, that's precisely what I experienced before things got worse. In my case, all those warning lights (engine, ABS, traction) were triggered because the systems weren't getting consistent power. The voltage would drop just enough to confuse the sensors, but not enough to prevent the car from starting. I actually drove it like that for about a week before getting it checked (probably not the smartest move, looking back). Since you mentioned your car was recently serviced, I'd suggest checking if they did any electrical work or disconnected the battery. Sometimes these issues pop up shortly after service if the battery wasn't reconnected properly. My mechanic explained that these BMWs are particularly sensitive to voltage fluctuations. Quick tip from my experience, if you're planning to get it checked, make sure to do it soon. I waited too long and ended up damaging some sensors, which added to the repair cost. The battery itself wasn't too expensive, but those extra repairs definitely hurt my wallet! Let me know what you find out. I'm curious if it's the same issue I had!

Thanks so much for all the detailed info! You've actually made me feel a bit better about the whole situation. I'll definitely get it checked out this week, don't want to risk damaging any sensors like you did. The similarity between our issues is pretty striking, especially the flickering lights and multiple warnings. The funny thing is, during the recent service, they did have to disconnect the battery to replace the air filter housing, so what you mentioned about proper reconnection makes total sense. I've just called my regular mechanic and booked it in for tomorrow morning. They'll check the battery and voltage first before looking into anything else. Thanks again for sharing your experience, it's really helped me understand what might be going on. I'll update you once I know what's causing the problem. Hopefully it's just the battery and nothing more serious!