Brakes - Rattle/Buzz From Driver's Side Of Dash
L-SB-0074-09
June 26, 2009
Brake Booster Vacuum Check Valve Rattle/Buzz Noise
Service Category
Brake
Section
Brake System
Market
USA
2010 Lexus Truck RX 350 AWD V6-3.5L (2GR-FE) Page 336
Applicability
Introduction
Some RX 330/350 vehicles may exhibit a rattle or buzz type noise coming from the driver's side instrument panel area. The noise can be duplicated
when lightly accelerating and then decelerating, or when depressing the brake pedal with the shift lever in Park and then releasing the brake pedal.
An improved vacuum check valve is now available to reduce this noise.
Parts 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.
Repair Procedure
1. Confirm the noise is coming from the brake booster vacuum check valve.
NOTE
Replace vacuum check valve with the same type as originally equipped (straight or 90锟斤拷).
2. Remove the vacuum tube clip from the brake booster check valve.
3. Remove and replace the brake booster vacuum check valve.
Make sure NEW valve is fully seated into brake booster grommet and returned to original condition.
4. Reconnect vacuum hose to the brake booster check valve and secure with clip.
5. Confirm that there are no vacuum leaks.
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