Brakes - Front Brake Squeak When Backing Up
BRAKESBR003-06
REVISED
Title:
FRONT BRAKE SQUEAK
Models:
'07 ES 350
September 26, 2006
TSIB REVISION NOTICE:
November 10, 2006: The illustration in step 2H has been clarified. Step 21 has been updated and a note has been added.
Previous versions of this TSIB should be discarded.
Introduction
Some customers may experience front brake squeak noise when the car is traveling in reverse and light pressure is applied on the brake pedal. The noise usually occurs when backing out of a parking space and/or turning in reverse. Updated front disc brake pad support plates ("fitting kit") are available to improve this condition.
Applicable Vehicles
^ 2007 model year ES 350 vehicles produced BEFORE the Production Change Effective VIN shown below.
Production Change 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.
Parts Information
Repair Procedure
1. Conduct a road test to verify the noise condition noise usually occurs when backing out of a parking space and/or turning in reverse.
2. Remove and replace the front disc brake pad support plate (4 per each caliper).
NOTE:
^ Use the same procedures for the RH side and LH side.
^ The procedures listed below are for the LH side.
A. Remove the front wheel.
B. Remove the caliper by holding the front disc brake cylinder slide pin and removing the 2 bolts and disc brake cylinder assembly.
C. Remove the 2 anti-squeal springs, if equipped.
D. Remove the 2 front brake pads from the front disc brake cylinder mounting.
E. Remove the 2 front anti-squeal shims and the 2 pad wear indicator plates from each pad.
F. Remove the 4 front disc brake pad support plates. Clean the area where the support plates sit.
G. Install the 4 front disc brake pad support plates.
Apply disc brake grease to the back of the brake pad support plate.
H. Install the front anti-squeal shims.
a. Apply disc brake grease to the anti-squeal shims.
NOTE:
^ When replacing worn pads, the anti-squeal shims MUST be replaced together with the pads.
^ Install the shims in the correct positions and directions.
^ Apply a thin layer of disc brake grease to the area that contacts the anti-squeal shim.
^ Disc brake grease can come out slightly from the area where the anti-squeal shim is installed.
^ Make sure that disc brake grease is NOT applied onto the lining surface.
b. Install the 2 anti-squeal shims and the 2 pad wear indicators to each pad.
NOTE:
Install the pad wear indicators in the correct positions and directions.
I. Install the 2 front brake pads with anti-squeal shims to the disc brake cylinder mounting.
Apply a small amount of the disc brake grease (1 - 2 mm [0.04 - 0.08 in.] thick) to the areas shown in the illustration.
NOTE:
Do NOT apply grease to the friction surfaces of the brake pads or the disc rotor.
J. Install the 2 anti-squeal springs, if equipped.
K. Install the disc brake cylinder assembly with the 2 bolts.
Torque: 34 N.m (350 kgf.cm, 25 ft.lbf)
L. Install the front wheel.
Torque: 103 N.m (1,050 kgf.cm, 76 ft.lbf)
3. Road test the vehicle to confirm the front brake "squeak" noise is NO longer present.