T-TT-0539-19

Tech Tip T-TT-0539-19
Subject
April 29, 2019
Market
Abnormal Buzz/Groan Noise at 20-30mph
Service Category
Section
Drivetrain
Transfer/4wd/Awd
USA
Applicability
19MY RAV4
APPLICABLE VEHICLES
2019
RAV4
CONDITION
This Tech Tip applies to 2019 model year RAV4 Adventure/Limited grade equipped with torque
vectoring AWD system ONLY.
Some customers may experience a buzz/groan at 20-30 mph when accelerating from a stop and/or at
13-20 mph on deceleration after driving the vehicle for 15-20 minutes or more.
This condition occurs with “Normal” drive mode selected.
RECOMMENDATIONS
Please refer to following for assistance in diagnosis and direction:
Diagnosis assistance:
- Buzz/groan noise may be coming from transfer case assembly at connection/disconnection
timing of the AWD system.
- Confirm noise is coming from transfer case via chassis ears.
o Monitor the 4WD ECU Data List “Front and rear axle coupling position sensor status” to
determine if noise is occurring at disconnect and/or connect timing.
Note: to duplicate noise, it may be required to drive vehicle for 15-20 minutes with “Sport” drive mode
selected. After warm-up, vehicle must be in Normal mode to duplicate if related to transfer case.
Direction:
- If noise is confirmed to be coming from transfer case, please contact TAS or your Regional FTS
for further instructions on repair.
LINK REFERENCES
This Tech Tip does not contain any link references
Expires on
Ver. 3.0 01/01/2019 T
07/29/2019
© 2019, Toyota Motor Sales, USA
Page 1 of 2
Tech Tip T-TT-0539-19
April 29, 2019
Subject
Market
Abnormal Buzz/Groan Noise at 20-30mph
USA
Applicability
Expires on
Ver. 3.0 01/01/2019 T
07/29/2019
© 2019, Toyota Motor Sales, USA
Page 2 of 2