2024 Toyota Grand Highlander power train problems
49 owner complaints filed with NHTSA name the power train on the 2024 Toyota Grand Highlander — 21% of all complaints for this model year.
What owners report
“2024 Toyota Grand Highlander XLE FWD. At approximately 38,000 miles I began hearing a roaring/humming noise that varied with vehicle speed. The condition initially progressed slowly but then became much worse within several days. At 41,510 miles a Toyota dealer diagnosed and replaced the right rear…”
filed Sep 9, 2026
“When ambient temperature are over ~90 the vehicle will lose power during acceleration. This happens typically in the speed range of ~20-35mph. The vehicle’s rpm will spike high but lose the ability to increase speed or shift gears. This occurs ~ 40-50% of the time when over 90 degrees. On several…”
filed Sep 4, 2026
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Related service bulletins
OBSOLETE NOTICE April 17, 2026: This bulletin is now obsolete. Please see T-SB-0028-26
T-SB-0082-24 Rev2 · Service Bulletin/Repair Instructions · issued Apr 17, 2026Some 2024 Grand Highlander and Grand Highlander Hybrid vehicles may exhibit a rotational clicking noise from one or both front drive shaft assemblies when accelerating while making turns. This condition may occur…
T-SB-0028-26 · Service Bulletin/Repair Instructions · issued Apr 16, 2026
Power Train problems in other Grand Highlander years
| Year | Reports | Share |
|---|---|---|
| 2026 Grand Highlander | 1 | 3% |
| 2025 Grand Highlander | 15 | 21% |
Other reported problem areas on the 2024 Toyota Grand Highlander
Counts are unique NHTSA complaints naming this component group. Complaints are unverified owner reports; mileage is computed only from complaints that included a usable odometer reading.