Complaint 2206145
2021 TOYOTA HIGHLANDER • POWER TRAIN • incident Apr 15, 2026
- Complaint ID
- 2206145
- Make
- TOYOTA
- Model
- HIGHLANDER
- Model Year
- 2021
- Component
- POWER TRAIN
- Incident Date
- Apr 15, 2026
- Date Received
- May 13, 2026
- Data As Of
- Jul 1, 2026
Complaint Summary
POWER TRAIN
Owner Narrative
My 2021 Toyota Highlander equipped with the UA80 transmission developed a whining/grinding noise under acceleration around 73,000 miles. Toyota diagnosed internal transmission failure and recommended full replacement costing approximately $9,000. Toyota issued TSB T-SB-0008-21 acknowledging defects involving the front carrier assembly pinion shafts in these transmissions. This defect creates a potential safety hazard due to possible loss of power or drivability during highway operation. I am requesting that NHTSA investigate the widespread transmission failures affecting 2021 Highlanders and related Toyota vehicles.
Owner-submitted narrative on file with NHTSA. Complaint narratives are self-reported and have not been verified.
Related
Data sources & freshness
TruckCodex aggregates official public-sector datasets. See the Source registry for dataset-level coverage and the Freshness log for last-import timestamps.
Census, SAFER, SMS, Licensing & Insurance (L&I), roadside inspections, crashes, and authority history.
Vehicle recall campaigns, defect investigations, and consumer safety complaints (SCRS).
Cross-border carrier registry and Canadian recall campaigns where applicable.
TruckCodex is an independent aggregator; it is not affiliated with FMCSA, NHTSA, EIA, or Transport Canada. Always verify compliance-critical information directly with the originating agency.