Canada - Tire Monitoring System - TPMS Activation
Bulletin2374
Issue Date
January 17, 2007
Title
TIRE PRESSURE SENSING TRANSMITTER ACTIVATION & INITIALIZATION
Component
GENERAL INFORMATION
Models
'08 RX 350
INTRODUCTION:
The 2008 model year RX 350 is equipped with a direct type Tire Pressure Warning System (TPWS). Each tire (including the spare tire) has a tire pressure warning valve/sensor, and the measured tire pressure data is transmitted to the Tire Pressure Warning System antenna/receiver to the Tire Pressure Warning System ECU.
During Pre-Delivery Service (PDS), the tire pressure sensing transmitters must be activated for Japan-built vehicles following the activation procedure in this TSB. Both Japan-built (VINs start with "J")and NAP-built (VINs start with "2") vehicles require the TPWS to be initialized following the initialization procedure in this TSB.
APPLICABLE VEHICLES:
- 2008 model year RX 350 vehicles.
REQUIRED SSTS:
WARRANTY INFORMATION:
REFERENCE INFORMATION:
- The Low Tire Pressure Warning Light will blink until all the tire pressure warning valves/sensors are activated.
- The Diagnostic Trouble Codes (DTCs) listed may be stored in the TPWS ECU until the tire pressure warning valves/sensors are activated.
- The DTCs will automatically clear when the tire pressure warning valves/sensors are activated.
ACTIVATION PROCEDURE: JAPAN BUILT ONLY
NOTE:
ONLY perform the following activation procedure on Japan-built vehicles.
1. Connect the Diagnostic Tester.
2. Turn the ignition switch to the "ON" position and check that the Low Tire Pressure Warning Light blinks.
3. Check that the "MAIN/2nd" switch is in the UP position (system is in "MAIN" mode).
4. Press or remove the valve core to reduce the tire inflation pressure rapidly by 6 psi (0.4 kgf/cm2, 40 kPa), or more, within 30 seconds.
If the tire inflation pressure is NOT reduced by 6 psi (0.4 kgf/cm2, 40 kPa), or more, within 30 seconds, the tire pressure warning valves/sensors will NOT be activated.
NOTE:
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.
5. Using the Diagnostic Tester, check for TPWS DTCs.
- If NO DTCs are stored, go to the Initialization Procedure in this TSB.
- If DTCs C2111 -- C2115 are stored, repeat step 4.
- If any other DTCs are stored, refer to the Repair Manual.
INITIALIZATION PROCEDURE:
NOTE:
Perform the following initialization procedure for both NAP-built and Japan-built vehicles.
1. Adjust all tires (including the spare tire) to the standard tire inflation pressure, as indicated on the Tire and Loading Information label on the vehicle.
NOTE:
- If there is great difference between the current temperature of the tire and wheel (for example: shop temperature) and expected temperature (for example: outdoor temperature), this needs to be considered when adjusting the tire pressure.
- Adjust the tire pressure when the tires are cold.
2. Turn the ignition switch to the "ON" position and check that the 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 and then turns OFF, indicating the system is now initialized.
4. Connect the Diagnostic Tester to DLC3.
5. Select the Tire Pressure Warning System Data List.
6. Confirm that each tire pressure on the Diagnostic Tester Data List shows the set value from step 1.
- If the tire pressure is correct, initialization is complete.
- If the tire pressure is incorrect, check the tire pressure gauge and repeat steps 1 -- 6.