RS7's Electronic Parking Brake Failure Needs Urgent Fix

Had the same electronic brake fault on my S6 (2017). The brake sensor was triggering false errors, causing the parking brake system to malfunction completely. Initially thought it was just a system glitch that could be reset. After inspection, the issue turned out to be a faulty electronic motor in the brake caliper. The electronic brake components had corroded due to water ingress. This required replacing the entire brake caliper assembly since the electronic parking brake motor is integrated into the unit. This is actually a serious issue that needs immediate attention since it affects both the parking brake function and the overall brake system safety. The repair took about 4-5 hours at an authorized service center. They also had to recalibrate the parking brake system after installation. The electronic parking brake failure is not very common on these models, but when it occurs, its typically due to either: Faulty brake caliper motors, Damaged wiring to the brake actuators, Failed control module, Corroded brake sensor connections Would strongly recommend getting it checked at a certified shop that specializes in electronic brake systems rather than a general mechanic.

Thanks for sharing your experience with the S6 brake issue. Your case sounds very similar to what happened with my RS7. After reading your detailed explanation, I am pretty convinced its the same electronic brake fault with the caliper motor. The symptoms match exactly, especially the constant warning light and system errors. Since you went through this already, do you remember roughly how much you ended up paying for the full repair including parts and labor? Also curious if you had any recurring brake control issues after getting it fixed? Might help me decide whether to try the dealer or look for a certified independent shop that knows these electronic brake systems well.

Since getting the electronic brake fault fixed on my S6, I can report the repair was completely successful. The brake system has worked flawlessly with no recurring issues or warning lights. The total cost came to 505 Euro for replacing the defective electric motor in the brake caliper, including labor and recalibration. The vehicle safety systems are all functioning normally now, and the electronic parking brake engages smoothly every time. This confirms that addressing the faulty brake caliper motor was indeed the root cause of the brake failure warnings. For this type of specialized repair involving electronic brake components, the investment was worthwhile to restore proper functionality and safety. Given the similarity of symptoms between our vehicles, you can likely expect comparable repair costs, though prices may vary between service centers. My advice stands, make sure to use a shop that specifically knows these advanced brake systems. A proper repair should completely resolve the brake fault messages and restore normal operation like it did in my case.

I finally got my RS7 parking brake issue resolved last week. After researching and getting advice here, I took it to a certified shop that specializes in electronic brake diagnostics. Sure enough, they found the same brake caliper motor failure that others mentioned. The mechanic showed me how the electronic parking brake motor had corroded, causing the system fault. They replaced the entire brake caliper assembly and recalibrated the parking brake system. The total repair came to 580 Euro, which included parts, labor, and the brake sensor calibration. The whole job took about 4 hours. Since the repair, the brake fault warning has cleared completely and the electronic parking brake is working perfectly again. No more system error messages. Really glad I went with a specialized shop instead of my regular mechanic, they knew exactly what to look for and fixed it right the first time. For anyone else facing similar parking brake issues, definitely get it checked by someone who knows these electronic systems. The peace of mind is worth the investment in proper diagnostics and repair.