Q5 Tire Pressure Sensor Ghost Alerts Driving Owners Crazy

Had a similar issue on my 2016 Audi A4 2.0T. The tire pressure warning kept appearing despite correct air pressure readings with a pressure gauge. The problem was failing TPMS sensor batteries. These sensors are mounted inside each wheel and communicate with the car computer. When their batteries get depleted, they trigger false pressure warnings. The fix required replacing all four TPMS sensors since they were all installed at the same time and had similar wear. This is common for vehicles around the 90-100k km mark. A sensor fault like this is not a serious mechanical issue, it is just an annoyance that affects the monitoring system. The repair involves dismounting each tire, installing new sensors, and programming them to sync with the vehicle computer. Each wheel needs proper initialization after sensor replacement for the system to work correctly. Important to note: While dealing with sensor warnings, always verify actual tire pressure regularly with a reliable pressure gauge. The warning system may be faulty, but maintaining correct tire pressure remains crucial for safety and performance. With new sensors installed, the system should work flawlessly for another 5-7 years before batteries deplete again.

Thanks for sharing your experience. My Q5 had the exact same TPMS issue last month. The constant low tire pressure warnings were really frustrating, especially since manual checks with a pressure gauge showed normal readings. Did you remember what you paid for the complete TPMS sensor replacement? My repair bill felt steep but curious how it compares. Also wondering if your warning system has stayed error-free since the fix or if any other issues came up?

After getting all four TPMS sensors replaced last month, the tire pressure warning system has worked perfectly with no error messages. The air pressure monitoring is now accurate and matches manual gauge readings. The total repair cost was 280 Euro for replacing the faulty sensors, which included labor for dismounting the tires and programming the new sensor system. While not cheap, resolving the sensor fault completely fixed those annoying false warnings. The TPMS issue turned out to be exactly what I suspected, depleted sensor batteries causing incorrect readings and constant alerts. A proper fix with new sensors was the only real solution, as repairing individual sensors is not practical. Since the repair, the tire pressure monitoring has been reliable with no recurring sensor faults or warning lights. Based on typical sensor lifespan, the new system should work correctly for many years before needing attention again. Worth noting that while dealing with the TPMS repair, having the air valve stems inspected and replaced at the same time is often recommended since accessing them requires dismounting the tires anyway.

Thanks for the input. Finally got my Q5 fixed last week. The mechanic confirmed worn out TPMS sensors were triggering those constant tire pressure warnings. Total repair came to 320 Euro for replacing all sensors plus programming. Bit more than expected but after a week of driving, no more false alarms or error messages. The pressure readings now match perfectly with my manual pressure gauge checks. The repair shop also spotted a cracked valve stem while doing the work, so got that replaced too. Good timing since they already had the tire off. Whole job took about 2 hours, they had to dismount each tire, swap the sensors, and recalibrate the system. Nice to have a properly working tire pressure monitor again instead of unusual warning lights. Worth fixing just for the peace of mind during highway drives.