Canada - Exhaust - Exhaust Drone Noise
BulletinTSB2656
Issue Date
June 22, 2009
Title
EXHAUST DRONE NOISE AT OPERATING TEMPERATURE WHILE STATIONARY IN DRIVE
Component
ENGINE MECHANICAL
Models
'10 RX350
INTRODUCTION:
Some customers may experience a drone noise or slight vibration with the engine at operating temperature and the vehicle stationary in Drive range. Use the following repair procedure to address customer concerns.
APPLICABILITY:
PRODUCTION CHANGE INFORMATION:
This TSB applies to vehicles produced BEFORE the Production Change Effective VIN shown.
WARRANTY INFORMATION:
PARTS INFORMATION:
REPAIR PROCEDURE:
1. Start the engine and confirm the drone noise/vibration is present while stationary in Drive range after the vehicle has reached operating temperature.
NOTE
If the drone noise/vibration is NOT present after reaching operating temperature, this bulletin does NOT apply.
2. Inspect the position of the No. 5 exhaust pipe support bracket and exhaust pipe hanger.
If the exhaust pipe hanger is positioned below the No. 5 exhaust pipe support bracket (Figure 1), this bulletin does NOT apply.
3. If the exhaust pipe hanger has rotated upward beside the No. 5 exhaust pipe support bracket (Figure 2), replace the No. 5 exhaust pipe support bracket.
4. Start the engine and verify the repair.
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.