Canada - Tire Monitoring System - TPMS Activation

Bulletin
2329

Issue Date
September 13, 2006

Title
TIRE PRESSURE WARNING VALVE/SENSOR ACTIVATION

Component
GENERAL INFORMATION

Models
'07 RX 400h

INTRODUCTION:

The 2007 model year RX 400h vehicles are 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 warning valves/sensors must be activated according to the procedure in this bulletin.

APPLICABLE VEHICLES:
- 2007 model year RX 400h vehicles.






REQUIRED SSTs:






WARRANTY INFORMATION:

REFERENCE:






- The Low Pressure Warning Light will blink until all the tire pressure warning valves/sensors are activated.
- The Diagnostic Trouble Codes listed may be stored in the TPWS ECU until the tire pressure warning valves/sensors are activated.
- The DTCs will automatically clear when tire pressure warning valves/sensors are activated.

ACTIVATION PROCEDURE:






1. Connect the Diagnostic Tester.
2. Turn the ignition switch to the "ON" position and check that the Low 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 (0.4kgf/cm2, 40kPa), or more, within 30 seconds.

If the tire inflation pressure is NOT reduced by 6psi (0.4kgf/cm2, 40kPa), 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 step 6.
- If DTCs C2111 - C2115 are stored, repeat step 4.
- If any other DTCs are stored, refer to the Repair Manual.






6. Adjust all tires (including the spare tire) to the standard tire inflation pressure, as indicated on the Tire and Loading Information label located inside the driver's door jam and confirm that the Low Tire Pressure Warning Light is OFF.

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.






7. 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 to set the tire pressure initialization.

NOTE:
It is necessary for the ignition to be in the "ON" position a maximum of 5 minutes for initialization to complete correctly.