If your vehicle is showing check tpms system or sensor fault message on dashboard, here are the most likely causes and the parts you'll need to fix each one.
TPMS sensors have internal, non-replaceable batteries that typically last 5 to 10 years. When a battery dies, the sensor stops transmitting data to the vehicle, triggering a system fault.
Sensors are mounted directly behind the valve stem and are easily broken by tire machines during tire replacement if the technician isn't careful. Corrosion from road salt can also cause the stem or sensor body to snap.
If new sensors were recently installed, they must be electronically 'relearned' to the vehicle's computer. Installing sensors with the incorrect radio frequency for the specific vehicle will also cause a persistent fault.
When upgrading to aftermarket wheels or swapping to a dedicated winter tire setup, the TPMS sensors are sometimes left out or forgotten, causing the system to lose communication entirely.
The central computer module or the wireless antenna that receives the signals from the wheel sensors has failed, preventing the vehicle from reading any tire pressures.