Complaint 2218292
2021 TOYOTA HIGHLANDER • POWER TRAIN • incident Jun 11, 2026
- Complaint ID
- 2218292
- Make
- TOYOTA
- Model
- HIGHLANDER
- Model Year
- 2021
- Component
- POWER TRAIN
- Incident Date
- Jun 11, 2026
- Date Received
- Jun 22, 2026
- Data As Of
- Jul 1, 2026
Complaint Summary
POWER TRAIN
Owner Narrative
I own a 2021 Toyota Highlander with approximately 127k miles. The vehicle has developed a noticeable whining/whirring noise during acceleration. The noise appears to originate from the drivetrain/transmission area and has become increasingly noticeable over time. The condition occurs every-time during acceleration and is present under normal driving conditions. I am concerned that this may indicate a transmission or drivetrain-related issue that could affect vehicle reliability and safety. I have found reports from other 2021 Toyota Highlander owners describing similar symptoms involving whining noises during acceleration. The vehicle has been inspected by a Toyota dealership. And is certified through Toyota. The vehicles was bought new from the Toyota dealership and has had all service done through Toyota. I am submitting this complaint so NHTSA can evaluate whether this condition is part of a broader pattern affecting similar vehicles as a defect in the original transmission built in the SUV.
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.