Canada - Tire Monitoring System - TPMS Initialization
BulletinTSB2207R
Issue Date
February 03, 2006
Title
TIRE PRESSURE SENSING TRANSMITTER ACTIVATION & INITIALIZATION
Component
GENERAL INFORMATION
Models
'07 RX 350
TSB REVISION NOTICE:
- April 19, 2006: The title has been changed. The Introduction has been updated. The Activation Procedure has been split into 2 procedures: Activation Procedure: Japan-built ONLY and Initialization Procedure: NAP-built & Japan-built. Step 3 and the note in step 3 of the activation procedure has been updated.
Previous versions of this TSB should be discarded.
INTRODUCTION:
The 2007 model year RX 350 is equipped with a direct type Tire Pressure Warning System (TPWS). A tire pressure sensing transmitter is built into each tire valve (including the spare tire), and the measured tire pressure data is transmitted through a Tire Pressure Warning System antenna to the tire pressure monitoring system receiver.
During Pre-Delivery Service (PDS), the tire pressure sensing transmitters must be activated for Japan-built vehicles (VINs start with "J") following the activation procedure in this TSB. Both Japan-built and NAP-built (VINs start with "2") vehicles require the TPWS to be initialized following the initialization procedure in this TSB.
APPLICABLE VEHICLES:
- 2007 model year RX 350 vehicles.
WARRANTY INFORMATION:
REFERENCE INFORMATION:
REQUIRED SSTS:
ACTIVATION PROCEDURE: JAPAN BUILT ONLY
1. Check that the tire pressure warning switch is in the "MAIN" position.
2. Turn the ignition switch to the "ON" position and check that the Low Tire Pressure Warning Light blinks.
3. Remove the cap of the tire valve and press the valve core to reduce the tire inflation pressure rapidly by 6 psi (0.4 kgf/cm2, 40 kPa), or more within 30 seconds.
NOTE:
- After all tire pressure sensing transmitters are activated, the Low Tire Pressure Warning Light will come ON whenever the tire pressure in any of the tires falls below 24 - 27 psi (1.65 - 1.9 kgf/cm2, 165 - 185 kPa).
- This operation is required for the system to be activated and must be performed for each tire (including the spare tire), one at a time.
4. Check that the Low Tire Pressure Warning Light goes OFF after all the tire pressure sensing transmitters are activated.
5. Check that the sleep mode Diagnostic Trouble Codes are NOT stored in the system. If the sleep mode Diagnostic Trouble Codes are stored, increase the tire inflation pressure of all 5 tires to 44 psi (3.0 kgf/cm2, 300 psi) and repeat steps 1 - 4.
ACTIVATION PROCEDURE: NAP-BUILT & JAPAN BUILT
NOTE:
Perform the following initialization procedure for both NAP-built and Japan-built vehicles.
1. Adjust the tire pressure to the specified level as indicated on the Tire and Loading Information label on the vehicle.
NOTE:
- The tire pressure must be checked COLD, meaning that the car must NOT have been driven at highway speeds for AT LEAST 3 hours.
- If there is a great difference between the current temperature of the tire and wheel (for example: shop temperature) and expected temperature (outdoor temperature), this needs to be considered when adjusting the tire pressure.
2. Check that the Low Tire Pressure Warning Light is OFF.
3. Push and hold the Tire Pressure Warning Set Switch for 3 seconds until the Low Tire Pressure Warning Light blinks 3 times.
4. Ensure the Low Tire Pressure Warning Light goes OFF.
When the Low Tire Pressure Warning light goes OFF, it is necessary to leave the ignition ON for 5 minutes to allow the TPWS ECU to initialize with the current tire pressure.
NOTE:
- Do NOT turn the ignition switch OFF until initialization is complete. If initialization has NOT been completed, it is not possible to enter the TPWS test mode.
- It is necessary to wait for up to 5 minutes until initialization completes correctly.