BMW iX2 Rollover Sensor Triggers Airbag Warning Mystery

I had the exact same issue with my 2021 BMW iX3 last month. The airbag warning light kept coming on, and after scanning, it showed "Affected control unit defective." The rollover sensor was indeed the culprit, it's actually a critical safety component that triggers airbag deployment if the car flips. Had it fixed at the garage, and they had to replace the entire rollover sensor module. It's not just a simple sensor swap; they needed to calibrate the new unit to work with the car's safety systems. The whole process took about half a day, and yes, it was pretty serious since it's part of the primary safety system. My advice? Don't put this off. A faulty rollover sensor means your airbag system might not work properly in an accident. Since your symptoms match what I experienced, including the soft top issues, I'd strongly suggest getting it checked by an authorized BMW service center. This isn't something you want to risk with a non-specialist garage.

Thanks for sharing your experience! This definitely sounds like what I'm dealing with. I'm relieved to hear it wasn't anything more complicated than the sensor module. I've booked an appointment with a certified shop for next week. Do you remember roughly how much you ended up paying for the whole repair? Also, has everything been working smoothly since the fix, or have you noticed any other quirks with the airbag system?

Hey there! Just wanted to follow up on your questions about the repair costs and how things have been working. The total bill came to exactly 1000 € for replacing and calibrating the rollover sensor unit. Honestly, while it wasn't cheap, it was worth every cent for the peace of mind. I'm happy to report that since getting it fixed, everything's been running perfectly smooth. The airbag warning light hasn't flashed once, and all the other related issues completely disappeared. The soft top's working flawlessly now too, no more getting stuck mid-way! It's such a relief not having to worry about the safety systems anymore. Trust me, you're doing the right thing getting it checked at a certified shop. Since it's such an important safety component, you definitely want someone who knows what they're doing. The techs really need to get the calibration spot-on for everything to work properly. Let me know how your repair goes next week. Always happy to share more details about my experience if you need them!

Thanks for all the info! I actually just got back from the certified shop today and you won't believe what happened. The repair was pretty much exactly as you described, but my experience was quite different from my last mechanic visit. These guys were super professional, they diagnosed it right away and fixed the rollover sensor in about 4 hours. The price was actually a bit less than what you paid, which was a nice surprise. The mechanic even showed me the old sensor and explained exactly what went wrong. The best part? They did a full system check after the repair and everything's working perfectly now. No more annoying warning lights, and the soft top's moving smooth as butter. It's such a relief to have this sorted, I can finally enjoy driving without worrying about the safety system! Really appreciate you sharing your experience. It definitely helped me make the right decision to get it fixed at a certified place instead of putting it off or going to a cheaper garage. Sometimes paying a bit more upfront saves a lot of headaches later!