Manufacturer Code Charts: 33

DTC 31, 33, 35, 37: Tire Pressure Sensor Low Battery Voltage

NOTE: this problem occurs when the temperature around the sensor is -40°F (-40°C) or less. Note then the diagnosis must be made in a place where ambient temperature is -4°F (-20°C) or more.

1. Turn the ignition switch to ON (II).

Does the TPMS indicator go off within one minute?

YES - the system is OK at this time. Clear the DTC: with the HDS.

NO - Go to step 2.

2. Check the RF, LF, RR, or LR TIRE PRESSURE SENSOR TRANSMITTER BATTERY in the TPMS DATA LIST with the HDS.

NOTE: If the HDS screen shows UNDIFINED for sensor status, turn the ignition switch to LOCK (O) rotate the tire 1/4 turn, then turn the ignition switch to ON (II), and try again. If UNDEFINED is still shown, repeat the procedure in the previous sentence until NORMAL is shown.





Is LOW indicated?

YES - Replace the appropriate tire pressure sensor.

NO - Check for loose terminals and poor connections at the TPMS control unit. If necessary, substitute a known-good TPMS control unit, and recheck.