Canada - Brakes - Front Brake Squeak
BulletinTSB2771R
Issue Date
January 22, 2010
Title
FRONT BRAKE SQUEAK (AWD)
Component
BRAKES
Models
'07-'11 GS350
TSB REVISION NOTICE
- December 15, 2010: Applicability has been updated to include 2011 model year GS350 vehicles.
- Warranty Information, Parts Information, and Repair Procedure sections have been updated.
Any previous printed versions of this service bulletin should be discarded.
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 brake pad kit, anti-squeal shim kit, and disc brake rotors have been made available to address this concern. Use the following repair procedure to remove and replace the front brake pad kit, anti-squeal shim kit, and disc brake rotors.
APPLICABILITY:
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.
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 calliper assembly.
5. Remove the calliper assembly.
NOTE
Do NOT allow the calliper 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 with the 2 bolts.
Torque: 78 N-m (799 kgf-cm, 58 ft-lbf)
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.
NOTE
Only alternative front brake pads can be used with this application. NEW design front brake pads (P/N 04465-30450) are blue in color.
A. Install the No. 1 anti-squeal shims (112 mm wide) with the coated side toward the brake pad backing plates.
B. Install the No. 2 anti-squeal shim (117 mm wide with NO coating on either side) onto the No. 1 anti-squeal shims.
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 calliper assembly.
NOTE
Ensure the pads with the wear indicators are installed on the inboard side of the callipers
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 kgf-cm, 76 ft-lbf)
15. Road test the vehicle to confirm the front brake squeak is NO longer present.
NOTE:
Issue of this Technical Service Bulletin is to ensure that proper repair information is available. IT DOES NOT CONSTITUTE AN AUTHORIZATION FOR REPAIR. Normal provisions of the formal warranty policy, as applicable, will apply.