Engine - Abnormal Drive Belt Noises

L-SB-0164-08

December 3, 2008

1UR-FSE, 2UR-GSE, 3UR-FE Accessory Drive Belt Tensioner

Service Category
Engine/Hybrid System

Section
Engine Mechanical

Market
USA





Applicability

Introduction

Some customers may experience an abnormal noise from the engine accessory drive belt area. An improved accessory drive belt tensioner assembly has been developed to keep the tensioner pulley in alignment with the other pulleys. If the tensioner pulley is out of alignment, use the procedure in this bulletin to address the customer's concern.

Production Change Information





This TSIB applies to vehicles produced BEFORE the Production Change Effective VINs shown.








Parts Information

Warranty Information

APPLICABLE WARRANTY

^ This repair is covered under the Lexus comprehensive Warranty. This warranty is in effect for 48 months or 50,000 miles, whichever occurs first, from the vehicle's in-service date.

^ Warranty application is limited to correction of a problem based upon a customer's specific complaint.

Repair Procedure

1. Remove the drive belt.

Refer to the Technical Information System (TIS) applicable model year GS 460, IS F, LS 460 and LX 570 Repair Manual:

^ 2008 GS 460 Engine/Hybrid System - Engine Mechanical - "1UR-FSE Engine Mechanical: Drive Belt: Removal"

^ 2008 IS F, Engine/Hybrid System - Engine Mechanical - "2UR-GSE Engine Mechanical: Drive Belt: Removal"

^ 2007 / 2008 LS 460 Engine/Hybrid System - Engine Mechanical - "1UR-FSE Engine Mechanical: Drive Belt: Removal"

^ 2008 LX 570 Engine/Hybrid System - Engine Mechanical - "3UR-FE Engine Mechanical: Drive Belt: Removal"








2. Remove the drive belt tensioner assembly.

3. Replace the drive belt tensioner assembly.

Torque: 23 N*m (235 kgf*cm, 17 ft*lbf)

4. Replace the drive belt.

Refer to TIS:

^ G2008 GS 460, Engine/Hybrid System - Engine Mechanical - "1UR-FSE Engine Mechanical: Drive Belt: Installation"

^ 2008 IS F Engine/Hybrid System - Engine Mechanical - "2UR-GSE Engine Mechanical: Drive Belt: Installation"

^ 2007 / 2008 LS 460 Engine/Hybrid System - Engine Mechanical - "1UR-FSE Engine Mechanical: Drive Belt: Installation"

^ LX 570 Engine/Hybrid System - Engine Mechanical - "3UR-FE Engine Mechanical: Drive Belt: Installation"

5. Confirm the condition has been remedied.