RS6 TPMS Sensors Malfunction Despite Proper Inflation

Since I had a similar TPMS issue with my 2019 RS4, I can share some relevant experience as someone with moderate car expertise. The symptoms were nearly identical, constant TPMS warnings despite correct tire pressure. After checking tire inflation multiple times and confirming all pressures were good, the error messages kept appearing. The workshop diagnosed depleted sensor batteries as the root cause. TPMS sensors have built-in batteries that typically last 5-8 years, but some fail earlier. In my case, two sensors had weak batteries triggering false warnings. The fix involved replacing all four TPMS sensors to ensure consistent performance. Total cost was 280 Euro including programming and calibration. Since then, no more false warnings and the tire pressure monitoring works perfectly. To help diagnose your specific case, could you share: When did the TPMS warnings first appear, Are all tires affected or just specific ones, Have you had any recent tire work done, What fault codes are stored This information would help determine if your issue matches what I experienced or if its something different requiring another solution. Regular tire pressure checks are still important even with working TPMS, but false warnings definitely need addressing to maintain proper monitoring.

Thanks for the detailed reply. Just had my 38329 KM service last month and the TPMS issue started right after. All four tires are affected and showing errors. The fault codes point to sensor communication failure. No recent tire work done. The constant low tire warnings are frustrating since I check tire inflation weekly and pressures are spot on. It sounds like depleted sensor batteries might be the culprit here too. Will have the workshop check the sensors at the next appointment. Good to know the fix was straightforward in your case, even if replacing all TPMS sensors was needed.

Thanks for the additional details. Your situation definitely mirrors what I experienced with my RS4, especially the timing and symptoms after service. The fact that all four tires are showing errors simultaneously and the fault codes indicate communication failure strongly suggests sensor battery issues, just like in my case. The service work might have triggered the dormant sensor problem, as the TPMS system often gets reset during maintenance. When sensor batteries are weak, they sometimes struggle to maintain consistent communication after a reset, leading to constant tire pressure warnings. Since my sensor replacement, the TPMS has worked flawlessly for over 18 months now. The 280 Euro investment was worth it to eliminate those false alarms and restore proper tire pressure monitoring. Considering your mileage and the symptoms, replacing all sensors would likely resolve the issue permanently. One tip from my experience: when booking the workshop appointment, ask them to pre-order the sensors. Some variants need special ordering, and having them ready saves time.

Since you mentioned the TPMS warnings started after my service, I will bring this up with the dealer first. Seems the timing lines up with sensor battery depletion being the likely cause, especially with all four showing errors. Your experience with the 280 Euro fix gives me a good baseline for what to expect cost-wise. The communication failure codes match exactly what you described. It makes sense that the service reset could have exposed already weak sensor batteries. At least the tire pressure itself is good, I am religious about checking inflation levels every week. Will schedule the appointment and request they have sensors ready as suggested. Looking forward to getting rid of these constant false low tire warnings and having a properly functioning TPMS again. Really appreciate you sharing your detailed experience, as it helped confirm my suspicions about failing sensors versus a more complex issue.