RS4 Airbag Warning: Faulty Rollover Sensor Alert

I had a very similar issue with my 2007 S4, also showing airbag warning lights. As someone with some mechanical experience working on Audis, I can share my troubleshooting journey. The vehicle safety system warning turned out to be related to a faulty rollover sensor unit. The workshop first ran a complete diagnostic scan, which pointed specifically to the SRS sensor module being defective. They confirmed this by testing the tilt sensor connections and resistance values. The repair involved: Complete diagnostic testing, Removing interior trim pieces to access the control unit, Replacing the defective SRS control module, Recalibrating the new unit, Final system check Total cost was 1000 Euro including parts and labor. The vehicle rollover detection system now works perfectly, and the warning light has stayed off since the repair. To help further with your specific case, could you share: Have you had any recent work done on the car? Are there any other warning lights active? Did the issue appear suddenly or gradually? Have you noticed any impact damage to the car? This information would help determine if your issue matches what I experienced or if it might be something different.

Thanks for sharing your experience with the sensor failure issue. After checking the error codes at my last service 2 months ago, it turns out the automotive sensor readings match your symptoms exactly. My tilt sensor and SRS sensor both showed irregular values during testing. The mechanic quoted 950 Euro for a complete replacement of the rollover sensor system. Will probably book it in next week since I dont want to risk having compromised safety systems. Current mileage: 104408 KM

Thanks for the update on your RS4 sensor failure situation. Good to hear you got it properly diagnosed. That 950 Euro quote is actually quite reasonable and in line with what I paid for my S4 repair. Based on the matching symptoms and error codes between our cases, it definitely sounds like the same rollover sensor issue I encountered. Given that both the tilt sensor and SRS sensor are showing problems, replacing the complete unit is the right approach. These automotive sensor systems are integral to the vehicle safety system, so partial fixes often lead to recurring issues. After my repair, I learned that these sensor failures tend to occur around the 100000-120000 KM mark in these models, so your timing fits the typical pattern. The complete replacement should resolve both the warning light and restore full functionality to your safety systems. One tip: make sure they perform a full system calibration after installing the new rollover sensor unit. This was crucial for ensuring no residual error codes remained in my case. Let us know how the repair goes when you get it done.

Thanks for sharing these detailed repair experiences. Since my initial post, I just wanted to update that I ended up scheduling the work for next Tuesday. The matching symptoms with other RS4 owners experiencing sensor failure really helped confirm my decision. My crash detection system clearly needs attention, and the 950 Euro price tag seems fair based on other owner experiences. The mileage correlation around 100000 KM for tilt sensor issues is particularly interesting since mine is showing at 104408 KM. I have confirmed with the workshop that they will perform the full system calibration after replacing the safety system components. Will definitely share the results once the repair is complete. Really appreciate the detailed information about the SRS sensor replacement process, it helped me understand exactly what work needs to be done to resolve these warning lights. Current mileage: 104408 KM