Complaint 1700786
2012 TOYOTA SIENNA • POWER TRAIN • incident Sep 1, 2020
- Complaint ID
- 1700786
- Make
- TOYOTA
- Model
- SIENNA
- Model Year
- 2012
- Component
- POWER TRAIN
- Incident Date
- Sep 1, 2020
- Date Received
- Oct 19, 2020
- Data As Of
- Sep 1, 2026
Complaint Summary
POWER TRAIN
Owner Narrative
MY 2012 TOYOTA SIENNA RECENTLY BEGAN MAKING A LOUD WHINING NOISE FROM THE REAR AXLE AREA. UPON INSPECTION, WE WERE INFORMED THAT THE DIFFERENTIAL UNIT WAS FAILING AND NEEDED TO BE REPLACED. THIS WOULD COST US BETWEEN $2,500-$3,000. AFTER SOME RESEARCH, I DISCOVERED THAT THIS IS A COMMON PROBLEM WITH THE SIENNA, LIKELY CAUSED BY A DESIGN FLAW. THE SAME UNIT WAS USED ON THE RAV-4, AND AFTER SIMILAR PROBLEMS SURFACED IT WAS RECALLED AND FIXED BY TOYOTA. GIVEN THE DANGER POSED BY FAILURE OF THIS PART TO A FAMILY VEHICLE, AND THE KNOWN EXISTENCE OF THE PROBLEM BY TOYOTA, IT SEEMS OBVIOUS THAT IT SHOULD BE IMMEDIATELY RECALLED AND FIXED BY THE MANUFACTURER.
Owner-submitted narrative on file with NHTSA. Complaint narratives are self-reported and have not been verified.