Audi S5 Airbag Light: Rollover Sensor Fix Guide

I had a similar issue with my 2011 Audi S4 about a year ago. I have some experience working on cars, mainly basic maintenance, but sensor issues like this are beyond my comfort zone. The airbag warning light came on suddenly, and the diagnostic scan revealed problems with the tilt sensor and SRS sensor system. The rollover sensor was giving incorrect readings, which triggered the airbag system warning. After checking online forums, I decided against attempting any DIY fixes since the airbag system is safety-critical. Took it to a workshop where they diagnosed a faulty control unit that was affecting the entire rollover detection system. The total repair cost was 1000 Euro, which included the new control unit and programming. Key things I learned: Never ignore airbag warning lights, Sensor failure in the SRS system often requires professional diagnostic equipment, The fix usually needs special programming after parts replacement Could you share more details about when this started happening? Any recent work done on the car? Sometimes these sensor issues can be triggered by other repairs or electrical work. Also, has the car been in any accidents or experienced water damage?

Thanks for sharing your experience. My S5 has 48535 KM and had its last service 3 months ago. After reading your reply, I checked with my mechanic who explained that automotive sensor issues in the airbag system need specialized attention. They conducted a thorough diagnosis of the crash detection system and found that the vehicle safety module was getting faulty signals from the rollover sensor. The repair estimate is around 850 Euro for sensor replacement and calibration. This seems reasonable compared to your repair cost. I will get it fixed next week since compromising on airbag sensor reliability isnt worth the risk. Just wondering if you experienced any recurring issues after your repair?

Since having the rollover sensor and control unit replaced on my S4, I havent experienced any recurring issues with the SRS sensor system. The vehicle safety features have been working perfectly, and the airbag warning light hasnt reappeared. Your 850 Euro estimate sounds about right. The key is making sure they perform proper calibration after the sensor replacement. The tilt sensor and crash detection systems need precise programming to function correctly. One thing to note: after the repair, my workshop recommended regular diagnostic checks of the SRS system during annual maintenance. While sensor failure is relatively uncommon, its good practice to verify all safety systems are operating correctly. Good call getting it fixed quickly. These vehicle safety components are essential, and waiting could lead to more complex issues down the line.

Thanks for the follow-up information. I am glad to hear you havent experienced any repeat issues with your sensor repair. Since posting my initial question, I went ahead and had the work done. The mechanic replaced both the rollover sensor and recalibrated the entire SRS system. The total came to 875 Euro, slightly higher than quoted due to an additional connector they had to replace. The vehicle safety system is now working perfectly, no more warning lights and the diagnostic scan shows all sensors functioning normally. The airbag sensor system has been trouble-free for the past week. I will definitely follow your advice about regular diagnostic checks during maintenance. The technician also mentioned this helps catch potential sensor failure early, especially in the tilt sensor and crash detection components. For anyone searching the forum with similar issues, dont hesitate to get it checked. The peace of mind knowing the safety systems are working correctly is worth the repair cost.