Complaint 1666525
2012 TOYOTA SIENNA • POWER TRAIN • incident May 1, 2020
Crash
No
Fire
No
Injuries
0
Deaths
0
- Complaint ID
- 1666525
- Make
- TOYOTA
- Model
- SIENNA
- Model Year
- 2012
- Component
- POWER TRAIN
- Incident Date
- May 1, 2020
- Date Received
- Jun 2, 2020
- Data As Of
- Sep 1, 2026
Complaint Summary
POWER TRAIN
Owner Narrative
UNIT IS PRODUCING A SPEED DEPENDENT WHINE FROM THE REAR DIFFERENTIAL CONSISTENT WITH A BEARING FAILURE IN THE VISCOUS COUPLER. ISSUE FIRST OBSERVED WITH APPROXIMATELY 98,000 MILES ON ODOMETER. THIS APPEARS TO BE A COMMON COMPONENT FAILURE ON MANY TOYOTA AWD VEHICLES MANUFACTURED IN THE LAST 15-20 YEARS, AND THE COMPONENT IN QUESTION MAY BE UNDER-ENGINEERED TO PERFORM AS EXPECTED IN NORMAL DRIVING CONDITIONS. REPLACEMENT PART COSTS $1300+ FROM TOYOTA, NOT INCLUDING INSTALLATION. *TR
Owner-submitted narrative on file with NHTSA. Complaint narratives are self-reported and have not been verified.