Brakes - Squawk Noise From The Brake Actuator: Overview

L-SB-0069-09

June 2, 2009

Squawk/Bark Type Noise from Brake Actuator

Service Category
Brake

Section
Brake Control/Dynamic Control System

Market
USA





Applicability

Introduction

Small amounts of air in the brake system may cause a squawk or bark type noise from the brake actuator in some LS 460/460L and LS 600h vehicles. If present this condition is most noticeable when the vehicle is not moving and the brake pedal is depressed or when coming to an abrupt stop. Follow the procedures outlined in this bulletin to remove any residual air from the system that could contribute to this condition.

This procedure should also be followed anytime the brake actuator assembly is replaced. Refer to the video link below for an example of the squawk/bark noise condition:





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.





Required Tools & Equipment