TPMS Symptom Troubleshooting Index (TPMS)

Symptom	Diagnostic procedure	Also check for
HDS does not communicate with the VSA modulator-control unit or the vehicle	Go to the DLC circuit troubleshooting .
TPMS cannot be calibrated	1. Symptom troubleshooting . 2. Update the VSA modulator-control unit if it does not have the latest software . If the VSA modulator-control unit was updated and the symptom is still present, replace the VSA modulator-control unit .
TPMS warning is indicated	1. Check for VSA system DTCs . 2. Check for the VSA indicator. If VSA indicator turns on, do the VSA system symptom troubleshooting "ABS indicator, brake system indicator, and VSA indicator do not go off" - Refer to: VSA System Symptom Troubleshooting 3. Update the VSA modulator-control unit if it does not have the latest software . If the VSA modulator-control unit was updated and the symptom is still present, replace the VSA modulator-control unit .
Low tire pressure/TPMS indicator comes on	1. Check the tire size and tire pressure according to tire information. 2. Do the TPMS calibration .
Low tire pressure/TPMS indicator does not come on when the tire pressure has decreased	1. See general troubleshooting information "condition for data rejection, and case TPMS can not operate normally" (Even if a system is normal, there is a possibility that cannot detect low tire pressure) . 2. Do the gauge self-diagnostic function . 3. Do the TPMS calibration . 4. Update the VSA modulator-control unit if it does not have the latest software . If the VSA modulator-control unit was updated and the symptom is still present, replace the VSA modulator-control unit .