Audi SOS System Failures Plague Speedometer Cluster

Having dealt with a similar issue on my 2014 Audi S4, I can share some relevant experience as a DIY enthusiast with moderate technical knowledge. The emergency call system problems often stem from faulty wiring connections to the control module. In my case, the diagnostic codes kept returning after clearing them, exactly like your situation. After some troubleshooting, my workshop found corroded plug connections affecting the SOS signal transmission. The fix involved cleaning the connections and replacing a damaged cable harness near the control module. After the repair, they performed a system reset to clear all stored error codes. Total cost was 95 Euro, which included diagnostic work and parts. Before suggesting specific solutions, it would help to know: Are there any specific error messages displayed? Did the issues start suddenly or gradually? Have you had any recent work done on the electrical systems? Does the error appear more frequently during specific conditions (cold starts, rain)? This information would help determine if your issue matches what I experienced or if it might be something different in the emergency call system.

Last service completed at 12513KM. The automotive electronics are still giving me trouble despite trying multiple diagnostic scans. The call failure continues even after clearing the error codes and checking all fuse connections. Car safety systems seem unaffected but the SOS warning remains persistent. Tried basic system reset procedures through the infotainment menu without success. Starting to think this might need professional intervention since DIY attempts havent resolved the underlying issue with the emergency module.

Thanks for the additional details. After my similar experience with the emergency call system in my S4, I should mention that persistent telematics errors often indicate deeper issues than just fuse connections or basic resets. Since you mentioned your service history and unsuccessful diagnostic scans, this sounds remarkably similar to what I encountered. In my case, the persistent SOS signal failure turned out to be more complex than initially thought. After the first fix I mentioned earlier failed to solve it permanently, we discovered moisture had damaged the emergency call module itself. Basic system resets and clearing diagnostic codes provided only temporary relief, much like your situation. The module eventually required replacement since the water damage had compromised its internal components. A few technical points worth noting: Persistent error codes returning after multiple resets typically indicate hardware issues, Car safety systems staying operational is actually common with these failures, The emergency call system operates independently from other electronic systems Given your unsuccessful DIY attempts match my experience, professional diagnosis would be the logical next step. My final repair ended up costing 450 Euro for the new module plus programming, but it permanently resolved all warning lights and error messages.

Thanks for the detailed information about your experience with the S4. Your feedback regarding the failed DIY attempts has been quite helpful. I think I will proceed with booking a professional diagnosis since the control module issues seem beyond basic troubleshooting. The persistent SOS signal problems and automotive electronics warnings are becoming a real concern. Given that multiple system reset attempts and diagnostic scans have failed to resolve the emergency call system errors, it makes sense to have experts take a look. While the 450 Euro repair cost you mentioned is significant, having a properly functioning car safety system is essential. Will contact a certified workshop to have them examine the control module and check for potential water damage, since your case sounds very similar to what I am experiencing. Better to address this properly now than risk more extensive electronic system failures down the line.