TPMS Warning Persists Despite Normal Tire Pressure

Had the same sensor fault issue on my Audi Q3 (2018). The tire pressure monitoring system showed persistent warnings despite correct air pressure readings on all tires when checked with a reliable pressure gauge. The problem turned out to be depleted sensor batteries. TPMS sensors have non-replaceable batteries with a typical lifespan of 5-7 years. When they start failing, they trigger false warnings even with proper tire inflation. The fix required replacing all four TPMS sensors. Not a serious mechanical issue, but it requires specific diagnostic equipment to program the new sensors to communicate with the car computer. This is not a DIY job due to the programming requirements. Important notes: Always verify actual tire pressure with a gauge when warnings appear, Sensor battery failure is common around 100000 km mark, New sensors need proper programming to work with vehicle systems, Some aftermarket sensors may not be fully compatible Recommendation: Have a certified shop diagnose the system. They can verify which specific sensors are failing using TPMS diagnostic tools.

Thanks for sharing your experience with the TPMS sensor replacement. After having similar problems with my Audi Q2, I also had to deal with faulty air valve sensors giving incorrect low tire warnings. The local shop fixed it by replacing the sensors and reprogramming the TPMS system. Just wondering how much you ended up paying for the complete repair? Also, has the system been working properly since the sensor replacement, or have you noticed any other pressure monitoring alerts?

Glad my experience helped. The tire pressure sensor fault was completely resolved after visiting the certified shop last month. The total repair cost was 280 Euro, which covered both the new sensors and programming work. Since the repair, the TPMS system has been working flawlessly with no false alerts. The mechanic explained that my sensor batteries were indeed depleted, causing the intermittent warnings despite normal tire pressure readings on the gauge checks. Regular tire checks show the new system is now accurately reporting pressure levels. The investment was worth it for the peace of mind and avoiding potential tire issues down the road. The repair shop also mentioned this is quite common for Audis around our mileage range, so its good preventive maintenance. A tip for others: while dealing with sensor faults, always keep doing manual tire pressure checks with a reliable gauge until the system is fixed. Better safe than sorry when it comes to tire maintenance.

Thanks everyone for the insights. Just wanted to share how my TPMS issue got resolved. The mechanic confirmed it was failing sensors giving false readings despite correct tire inflation levels. The repair cost came to 320 Euro including parts and labor. They replaced all sensors since they were approaching end of life anyway. The programming process took about an hour, and they did a complete tire check to ensure everything was properly calibrated. Its been three weeks since the fix, and the system is working perfectly. No more unusual sensor fault warnings or false low pressure alerts. For anyone facing similar issues, getting the sensors replaced was definitely worth the cost to avoid constant false warnings and ensure accurate tire pressure monitoring. The whole repair experience was much better than my previous shop visits. They explained everything clearly and completed the work in one session. Definitely keeping an eye on the tire pressure monitoring system going forward, but glad to have this resolved.