S1 TPMS Sensors Trigger False Low Pressure Alerts

I faced this exact issue on my 2015 S3 last season. The low tire pressure warning kept appearing despite correct tire pressure readings. Initially thought it was just a tire pressure sensor fault, but it turned out the TPMS sensor batteries were depleted. The air valve integrated sensors typically last 5-7 years before battery depletion. When they fail, they trigger false low tire warnings. Simply resetting the system provides only temporary relief, as experienced in your case. The solution required replacing all four TPMS sensors since they were all from the same production batch and showing similar wear. This is not a serious mechanical issue, but it requires proper diagnosis and replacement to resolve permanently. A scan tool confirmed multiple sensor faults stored in the system. After replacement, the system needed proper initialization and coding. Worth noting that using non-OEM sensors can cause compatibility issues with the car's monitoring system. The warning system is actually doing its job, alerting you to a sensor fault rather than an actual low tire condition. Getting this fixed at a certified shop is recommended since proper sensor programming is essential.

Thanks for the detailed explanation of the TPMS sensor issue. After getting all sensors replaced and a proper tire inflation check, my warning lights finally stopped appearing. Really helped solve that annoying sensor fault that kept popping up on the dashboard. Quick question, do you remember roughly how much you paid for the full sensor replacement? Also, have you experienced any other tire pressure monitoring issues since the fix? Been a few months for me and so far so good, but wondering if I should watch out for anything specific.

Thanks for asking about the costs. After having my TPMS sensors replaced last season, I havent experienced any tire pressure sensor fault issues. The system works perfectly now, showing accurate readings when doing regular tire checks. The total repair cost was 280 Euro which covered new sensor batteries, programming, and a complete air pressure check. While it might seem steep, having reliable tire pressure monitoring is crucial for safety and tire longevity. Make sure to perform regular tire checks even with working sensors. The air valve sensors are rated to last another 5-7 years now, so you should be good for quite a while. Just keep an eye on the air pressure readings during seasonal tire changes to ensure everything stays calibrated correctly. The key was getting the proper diagnosis and not just resetting the system like your first mechanic attempted. A working TPMS gives peace of mind, especially when it comes to maintaining correct tire pressure throughout the year.

Thanks everyone for the help with this TPMS issue. Finally got it sorted last week. Went to a different shop that specialized in tire pressure monitoring systems. They diagnosed exactly what was mentioned, dead sensor batteries triggering those false warnings. Ended up paying 295 Euro for the full job, all four TPMS sensors replaced plus programming. More than I wanted to spend but worth it to finally get rid of those constant low tire warnings. The mechanic showed me the old sensors and explained how the integrated air valve units work, which helped understand why just resetting wasnt fixing it. The shop also did a complete tire inflation check and system calibration. Been driving for two weeks now without a single warning light. Such a relief not seeing that sensor fault message every time I start the car. Definitely learned my lesson about getting proper diagnosis instead of quick fixes.