Tire Monitor System - Transmitter Initialization
PRE-DELIVERY SERVICEPD003-06
REVISED
Title:
TIRE PRESSURE
SENSING TRANSMITTER
ACTIVATION & INITIALIZATION
Models:
'07 RX 350
February 1, 2006
TSIB REVISION NOTICE:
March 29, 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 have been updated.
Previous versions of this TSIB 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 TSIB. Both Japan-built and NAP-built (VINs start with "2") vehicles require the TPWS to be initialized following the initialization procedure in this TSIB.
Applicable Vehicles
^ 2007 model year RX 350 vehicles.
Warranty Information
Reference Information
NOTE:
^ After all the tire pressure sensing transmitters are activated, the flashing Low Tire Pressure Warning Light goes OFF.
^ The Diagnostic Trouble Codes (DTCs) listed below may be stored in the system until the tire pressure sensing transmitters are activated.
^ The codes will automatically clear when the tire pressure sensing transmitters are activated.
Required SSTs
Activation Procedure:
Japan-built ONLY
NOTE:
ONLY perform the following activation procedure on Japan-built vehicles.
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. Rapidly reduce the tire pressure by 6.0 psi (0.4 kgf/sq.cm, 40 kPa) or more within 30 seconds.
This operation is required for the system to be activated and must be performed for each tire, one at a time.
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/sq.cm, 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 DTCs are NOT stored in the system. If the sleep mode DTCs are stored, increase the tire inflation pressure of all 5 tires to 44 psi (3.0 kgf/sq.cm, 300 kPa) and repeat steps 1 - 4.
Initialization 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:
^ 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.
^ The tire pressure must be checked COLD, meaning that the car must NOT have been driven at highway speeds for AT LEAST 3 hours.
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 TPWS test mode.
^ It is necessary to wait for up to 5 minutes until initialization completes correctly.