Brakes - Front Brake Squeal/Squeak In Cold Weather

L-SB-0040-09

April 17, 2009

Front Brake Squeak (AWD)

Service
Category Brake

Section
Brake (front)

Market
USA





Applicability

Introduction

Some Lexus customers may experience a squeal or squeak noise in cold weather conditions from the front of the vehicle when lightly applying the brakes. A new anti-squeal shim kit brake pad kit and disc brake rotors have been made available to address this concern. Use the following repair procedure to address customer concerns.





Warranty Information

^ 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 during stops with light pressure applied to the brake pedal.

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

2. Remove the front wheel.

3. Remove the anti-rattle spring hole pin and clip.

4. Remove the front brake pads with the anti-squeal shims from the caliper assembly.

5. Remove the caliper assembly.

NOTE
Do NOT allow the caliper assembly to suspend by the flexible brake hose.

6. Discard the original brake pads shims and disc rotor.

7. Install the new disc rotor.

8. Reinstall the caliper assembly.





9. Install the NEW No. 1 and No. 2 anti-squeal shims on the brake pads. Do NOT apply any grease to the pads or shims.

Only alternative front brake pads can be used with this application. Alternative front brake pads (P/N 04465-30400) are green in color.

A. Install the No. 1 anti-squeal shims (112 mm wide) with the coated side toward the backside of the brake pads.





B. Install the No. 2 anti-squeal shim (117 mm wide) onto the No. 1 anti-squeal shim with the coated side away from the brake pad.





10. Center the No. 1 and No.2 anti-squeal shim locating tabs in the brake pad guides.

11. Install the inner and outer NEW brake pads with the NEW anti-squeal shims into the caliper assembly.

NOTE
Ensure the pads with the wear indicators are installed on the inboard side of the calipers

12. Install the anti-rattle spring hole pin and clip.





13. Ensure the shim locating tabs are properly centered on the brake pad guides.

14. Complete the repair by installing wheels and torque wheel nuts.

Torque: 103 N*m (1050 kg*cm, 76 ft*lbf)

15. Road test the vehicle to confirm the front brake squeak is NO longer present.