BMW Parking Brake Failure Triggers Multiple System Alerts

I have a 2007 BMW 5 Series Diesel and faced a similar issue last year. The electric motor in the brake caliper was defective, causing the electronic parking brake to fail. Like yours, my car showed multiple system warnings, including the hill assist malfunction. Had to get both rear brake calipers replaced because the electronic motors were seized. It's a fairly serious issue since it affects the entire brake system's electronic functions. The repair wasn't just a simple part replacement, the system needed recalibration after the new calipers were installed. Make sure you find a mechanic who's familiar with BMW's electronic systems and can properly diagnose with the right diagnostic tools. The generic OBD readers won't give you the full picture of what's wrong with these sophisticated brake systems. Just don't drive too far without getting it fixed, as it could impact other connected systems in your car.

Thanks for sharing your experience. This sounds exactly like what I'm dealing with! Really helpful to know about the brake calipers and electronic motors, as I was worried it might be something even more serious. Would you mind sharing how much you ended up paying for the whole repair? Also, have you had any other issues pop up since getting it fixed? Just want to make sure I'm prepared for what's ahead.

Hey there! Happy to give you an update. The repair was totally worth it, cost me 505 € to fix the electric motor in the brake caliper that was playing up, and I haven't had a single problem since! The mechanic found the exact issue I mentioned before, faulty electronic motor in the caliper, and replaced it. After they recalibrated everything, the electronic parking brake started working perfectly again. All those warning lights and system failures disappeared completely. It's been smooth sailing since the repair. No more Hill Start Assist warnings or any other electronic brake gremlins popping up. The car feels just like new again when it comes to the braking system. One piece of advice though, make sure whoever does the work knows their way around BMW's electronic systems. The diagnostic and recalibration parts are just as important as changing the actual parts. Let me know if you need any other details about the repair. Always happy to help a fellow BMW owner!

Just got back from the mechanic and wow, what a relief! Found a really knowledgeable BMW specialist who knew exactly what they were doing. You were spot on, it was the electronic motor in the brake caliper causing all the trouble. The repair cost was actually pretty close to what you paid, around 520 €. The mechanic showed me the faulty parts and explained everything clearly. They did the recalibration too, and now all those annoying warning lights are gone! The best part? My parking brake works perfectly now, and all the assist systems are back to normal. It's like having a different car! Really glad I didn't put off getting it fixed. Thanks again for your advice about finding a specialist. They really knew their stuff with the BMW systems, and I probably saved myself from bigger problems down the road. You've been super helpful!