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Toyota brake buzz

Some Toyota vehicles may exhibit a rattle or buzz type noise at 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 updated vacuum check valve is now available to reduce this noise.

SERVICE PROCEDURE

Confirm that the noise is coming from the brake booster vacuum check valve.

Remove the vacuum tube clip from the brake booster check valve and disconnect the tube.

Remove and replace the brake booster vacuum check valve. Reconnect and confirm that no leak is present. Confirm that the noise has been eliminated.

Toyota has released an updated brake booster vacuum check valve to eliminate the noise complaint.
<p>Toyota has released an updated brake booster vacuum check valve to eliminate the noise complaint.</p>

PARTS INFORMATION

MODEL VALVE SHAPE OLD P/N NEW P/N

2007-2010 Camry Straight valve 44730-22150 44730-20080

2008-2009 Highlander Straight valve 44730-22150 44730-20080

2005-2010 Avalon Straight valve 44730-22150 44730-20080

2006-2009 RAV4 90-degree 44730-12070 44730-14050

2004-2010 Sienna 90-degree 44730-12070 44730-14050

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