How Do I Reset TPMS Tire Pressure Light on Cadillac STS (2005-2011)

Time needed: 7 minutes

If you replacing a spare tire with a road tire containing the TPMS sensor on your Cadillac STS, the system will detect a malfunction and the low tire pressure warning light will blink. When that happens, the TPMS sensor reset process must be done. Here is how to reset the TPMS:

1. Turn the ignition key to the “ON” position without starting the engine

   If your vehicle has an ignition button, press the Engine Start/Stop button without touching the brake pedal

2. Press the Remote Keyless Entry (RKE) transmitter’s LOCK and UNLOCK buttons simultaneously for five seconds

   The horn will sound twice and the TIRE LEARNING ACTIVE message will appear indicating the TPMS matching process has started
   

3. Activate the TPMS sensor

   Start from the driver side front tire, remove the valve cap, and then increasing or decreasing the tire’s air pressure until a horn chirp sounds

4. Repeat the process for the passenger side front tire, passenger side rear tire, and the driver side rear tire

   A horn chirp will confirm that the sensor has been reset

5. Turn off the ignition after you reset the last tire

   The TIRE LEARNING ACTIVE message will disappear

6. Adjust the tire pressure in all four tires recommended on the tire placard

   Done!