A TPMS warning light might display if:
1. The tire pressure on one or more tires is too high or too low. A variation of 25% from the recommended air pressure will cause a malfunction light.
2. One or more of the TPMS sensors may be broken or sensor batteries may be dead
3. TPMS receivers may not be able to receive sensor signals
4. The TPMS module may not be functioning