Brakes - Abnormal Low Speed Front Brake Squeaking Noise

L-SB-0128-12

December 17, 2012

Standard / Luxury Grade Front Brake Squeak

Service Category
Brake

Section
Brake (front)

Market
USA





Applicability

Introduction

Some Standard/Luxury grade GS 350 vehicles may exhibit an abnormal front brake squeak while traveling at slow speeds. A new brake pad kit is available to address this condition. Use the following repair procedure to repair this condition.

Production Change Information





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








Warranty Information





Parts Information

Repair Procedure

1. Conduct a road test to verify the noise condition. Noise usually occurs during stops with light pressure applied to the brake pedal.

NOTE

This procedure is for the right-hand side. Perform the same procedure for the left-hand side.

Refer to the Technical Information System (TIS) applicable model and model year Repair Manual:

^ 2013 GS 350:
Brake - Brake (Front) - "Brake (Front): Front Brake (for 17 inch Front Disc Brake): Removal"

2. Inspect the front disc as described in the Repair manual.

Refer to TIS applicable model and model year Repair Manual:

^ 2013 GS 350:
Brake - Brake (front) - Front brake (for 17 inch Front Disc Brake) - "Brake (Front): Front brake (for 17 inch Front Disc Brake): Inspection"

A. If the runout is more than the maximum (0.05 mm [0.00197 in.]) change the installation position of the disc to minimize runout.

B. If the runout is more than the maximum even when the installation position is changed grind the disc.

C. If the disc thickness is less than the minimum (27.0 mm [1.06 in.]) replace the front disc.

Refer to TIS applicable model and model year Repair Manual:

^ 2013 GS 350:
Brake - Brake (Front) - "Brake (Front): Front Brake (for 17 inch Front Disc Brake): Installation"

3. Road test the vehicle to confirm the front brake squeak is no longer present.

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