Tire Pressure Sensor Relearn

NOTE: When the wheels have been rotated, or a tire pressure sensor has been replaced, retrain tire pressure sensor.

NOTE: Once the TPM learn mode has been enabled, each of the sensor unique identification (ID) codes can be learned into the BCM memory. When a sensor ID has been learned, the BCM sounds a horn chirp. This verifies the sensor has transmitted it ID and the BCM has received and learned it. The BCM must learn the sensor IDs in the proper order to determine correct sensor location. The first learned ID is assigned to the left front, the second to right front, the third to right rear and the fourth to left rear.

NOTE: Sensor functions using scan tool. Each sensor has an internal low frequency (LF) coil. When the tool is used in activate mode it produces an LF transmission that activates the sensor. The sensor responds to a LF activation by transmitting in learn mode. When the BCM receives a learn mode transmission while in TPM learn mode, it will assign that sensor ID to the location on the vehicle relative to the order in which it was learned.

NOTE: Sensor Functions Using Pressure Increase/Decrease Method Each sensor takes a pressure measurement sample once every 30 seconds while in stationary mode. If the tire pressure increases, or decreases by more than 8.3 kPa (1.2 psi) from the last pressure measurement, another measurement will occur immediately to verify the change in pressure. If a pressure change has indeed occurred, the sensor transmits in learn mode. When the BCM receives a learn mode transmission while in TPM learn mode, it will assign that sensor ID to the location on the vehicle relative to the order in which it was learned.

NOTE: Learn Mode Cancellation: The learn mode will cancel if the ignition is cycled to OFF or if more than 2 minutes has elapsed for any sensor that has not been learned. If the learn mode is cancelled before the first sensor is learned, the original sensor IDs will be maintained. If the learn mode is canceled for any reason after the first sensor is learned, all IDs are erased from the BCM memory and if equipped, the DIC will display dashes for tire pressures.

WARNING: If not utilizing a scan tool to initiate the relearn procedure, stray signals from other TPM equipped vehicles just driving by can be inadvertently learned. If any random horn chirps are heard from the vehicle while performing the learn procedure, most likely a stray sensor has been learned and the procedure will need to be cancelled and repeated. Under these circumstances, performing the TPM Learn Procedure away from other vehicles would be highly recommended. In the event a particular sensor activation does not cause the horn to chirp, it may be necessary to rotate the wheel valve stem to a different position due to the sensor signal is being blocked by another component. Before proceeding with the steps below, verify the following: No other sensor learn procedure is being performed simultaneously within close proximity. Tire pressures are not being adjusted on another TPM equipped vehicle within close proximity. Park Brake Switch input parameters are functioning correctly.

Apply the parking brake (Manual Transmission only).
Turn ON the ignition, with the engine OFF.
Using a scan tool or the DIC select Tire Pressure Sensor Relearn. A double horn chirp will sound and the left front turn signal will be illuminated when the receiver is in relearn mode. For DIC procedure, see below:
1. Make sure the Tire Pressure info page option is turned on. The info pages on the DIC can be turned on and off through the Settings menu.
2. Use the DIC controls on the right side of the steering wheel to scroll to the Tire Pressure screen under the DIC info page.
3. Press and hold the Set/ Reset button (check symbol) located in the center of the DIC controls.
  NOTE: The horn sounds twice to signal the receiver is in relearn mode and the TIRE LEARNING ACTIVE message displays on the DIC screen.
Starting with the left front tire, learn the tire pressure using one of the following methods:
- Method 1: Hold the antenna of the TPM tool against the tire sidewall close to the wheel rim at the valve stem location then press and release the activate button and wait for a horn chirp.
- Method 2: Increase/decrease the tire pressure for 8-10 seconds then wait for a horn chirp. The horn chirp may occur before or up to 30 seconds after the 8-10 second pressure increase/decrease time period has been reached.
After the horn chirp has sounded, repeat procedure for the remaining 3 sensors in the following order: Right front, Right rear, Left rear.
After the LR sensor has been learned, a double horn chirp will sound indicating all sensors have been learned.
Turn OFF the ignition to exit the learn mode.
After the learn mode has been exited, adjust all tires to the recommended pressures.