BMW X2 Active Hood Warning: Fixed or False Alarm?

I had a similar issue with my 2018 BMW X1 last month. The active hood sensor was faulty, triggering both the airbag light and hood error message. The mechanics at the dealership found that one of the acceleration sensors had corroded, causing false signals. This is actually a safety feature, these sensors detect impacts and lift the hood slightly to provide more crush space in case of accidents. In my case, they had to replace both hood actuators and the main sensor unit. It was a serious repair since it's part of the car's safety system, you shouldn't drive too long with these warnings active. The job took about 4 hours to complete. My advice? Take it to an authorized BMW service center since they have the proper diagnostic tools for these systems. The active hood system is pretty complex and needs specific calibration after repairs.

Thanks for sharing that info! I've been worried about this issue with my X2. Had the exact same symptoms with the airbag light and hood warning. I'm planning to take it to the dealer this week, and your explanation about the safety system makes total sense. If you don't mind me asking, do you remember roughly how much you ended up paying for the whole repair? Also, has everything been working properly since they fixed it? Just want to make sure I'm prepared for what's coming.

Hey there! Just wanted to follow up on your questions. Yes, everything has been working perfectly since I got it fixed, not a single warning light or hood message since then. Such a relief! The total cost came to 315 € for replacing the faulty acceleration sensor. While it wasn't cheap, it was actually less than I initially feared it might be. They explained that the sensor was the only component that needed replacement in my case, and fortunately, the actuators were still in good condition. The repair was definitely worth it for the peace of mind. I mean, it's a crucial safety feature after all. The dealership did a thorough job and even ran multiple diagnostics afterward to ensure everything was calibrated correctly. Been driving for about 6 weeks now without any issues. Just make sure they check the entire system during diagnosis, sometimes these warnings can have different root causes. Let me know how it goes with your repair!

Just got back from the mechanic and wanted to update you. The repair turned out pretty different from what I expected. Turns out both actuators were damaged from moisture exposure, and they had to replace the entire system. Took them about 6 hours to fix everything, and it set me back quite a bit more than your repair, almost double! The mechanic showed me the corroded parts and explained how the system works. Pretty fascinating stuff, actually. They ran several tests afterward, and everything's working perfectly now. No more warning lights or error messages. Thanks again for your advice about going to the dealer. You were right, they knew exactly what they were doing. Feels good to have this sorted out, even if my wallet's a bit lighter now! At least I can drive without worrying about those warning lights anymore.