Tire Monitor System - Initialization Procedure

L-SB-0100-12

September 25, 2012

Tire Pressure Warning System Initialization

Service
Category General

Section
Pre-Delivery Service

Market
USA





Applicability

Introduction

2013 model year ES 300h and ES 350 vehicles are equipped with a direct-type Tire Pressure Warning System (TPWS). Each tire (except spare tire) has a tire pressure warning valve/transmitter and the measured tire pressure data is sent to the tire pressure warning antenna by electric wave and then sent to the receiver.

During Pre-Delivery Service (PDS), TPWS must be initialized according to the procedure in this bulletin.





Required Tools & Equipment





Warranty Information

Initialization Procedure





1. Adjust all tires (except the spare tire) to the standard tire inflation pressure, as indicated on the Tire and Loading Information label located inside the vehicle.





2. Cycle the ignition switch to the "IG-ON" position and press and hold the Tire Pressure Warning Reset Switch for at least 3 seconds so that the Tire Pressure Warning light blinks 3 times.

3. Cycle the ignition to "OFF" and then to "IG-ON"

NOTE

It is necessary for the ignition to be in the "IG-ON" mode AT LEAST 5 minutes for the initialization to complete correctly.

4. Check the tire pressure values of all the tires using TIS Techstream.

Chassis / Tire Pressure Monitor / Data List

NOTE

^ The order in which the data is received is random.

^ It can take 2 - 3 minutes for the tire pressure values to be displayed on the TIS Techstream Data List.

^ If the signals from all the wheels are received and the Data List "ID Tire Inflation Pressure" displays, initialization is completed.

^ If initialization has not been completed successfully, DTC C2177/77 is stored after a vehicle speed of at least 5 mph (8 km/h) continues for 20 minutes or more. Please refer to the Repair Manual for further diagnosis.

5. Remove and discard ID number labels if attached to the wheels.

© 2012 Lexus, a division of Toyota Motor Sales, USA