2025 Toyota Grand Highlander problems & reliability
60 owner complaints filed with NHTSA for the 2025 Toyota Grand Highlander, alongside 3 safety recall campaigns. Last verified Aug 7, 2026. Complaints are unverified reports submitted by owners to the federal Office of Defects Investigation.
Each complaint is counted once (by NHTSA case number), even when it names several vehicles.
Most reported problems
| Component | Complaints | Share |
|---|---|---|
| Unknown OR Other | 16 | 27% |
| Power Train → | 14 | 23% |
| Engine → | 10 | 17% |
| Fuel/propulsion System | 8 | 13% |
| Structure | 8 | 13% |
| Electrical System | 5 | 8% |
| Vehicle Speed Control | 5 | 8% |
| Back Over Prevention | 3 | 5% |
| Forward Collision Avoidance | 3 | 5% |
| Visibility/wiper | 3 | 5% |
Component groups as classified by NHTSA. A complaint can name more than one component, so shares may sum to more than 100%.
What owners report
“Rodent damage to plant based wiring to Engine Harness A and valve vacuum hose. Cost $1700 and 2 repairs.”
Engine · filed Aug 4, 2026
“Driving on highway and suddenly panoramic sunroof glass shattered spontaneously. It nearly caused us to crash into median due to the sudden extremely loud noise that sounded like a gunshot at close range and then the sound of glass shattering and hitting into sunroof shade and top of car. My 18 year old daughter was…”
Structure · filed Jul 31, 2026
“The component that was available for inspection was our gas tank. It provided a profuse smell of fumes coming out of the tank and/or exhaust. You could also see vapors coming out of the gas tank when driving. The fumes alone are extremely toxic and extreme levels. The safety of me, my two young children and husband is…”
Fuel/propulsion System · filed Jul 25, 2026
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Technical service bulletins
38 manufacturer communications (TSBs, service campaigns, warranty extensions) are on file with NHTSA for the 2025 Toyota Grand Highlander. The 10 most recent:
Some 2005 – 2026 Toyota vehicles that have undergone water intrusion may exhibit a condition in which a musty odor is present. Follow the procedures in this bulletin to remediate the odor and address this condition. The…
T-SB-0055-24 Rev2 · Service Bulletin/Repair Instructions · issued Jan 7, 2026
Some 2024 – 2025 model year Grand Highlander and Grand Highlander Hybrid vehicles may exhibit an abnormal fluttering and/or vibration across the rear-center section of the hood. This phenomenon is most notable on darker…
T-SB-0111-24 Rev1 · Service Bulletin/Repair Instructions · issued Jul 15, 2025
The air conditioning dye injection tool kit has been developed to aid in identifying the location of air conditioning refrigerant leaks. The procedures outlined in this Service Bulletin aid in locating, inspecting, and…
T-SB-0058-23 Rev1 · Service Campaign · issued Jun 13, 2025
Some 2024 – 2025 model year Grand Highlander and Grand Highlander Hybrid vehicles may exhibit a condition where the Blind Spot Monitor (BSM) system is inoperative, there is a BSM malfunction message on the…
T-SB-0037-25 · Service Bulletin/Repair Instructions · issued Apr 18, 2025
Some 2024 – 2025 model year Grand Highlander and Grand Highlander Hybrid vehicles may exhibit a condition where the Blind Spot Monitor (BSM) system is inoperative, there is a BSM malfunction message on the…
T-SB-0037-25 · Service Bulletin/Repair Instructions · issued Apr 18, 2025
To assist with the early detection and early resolution of audio related concerns you may be asked to recover MMR data from the head unit. The following steps are instructions on how to retrieve the data from the system…
T-TT-0779-25 · Service Bulletin/Repair Instructions · issued Apr 2, 2025
To assist with the early detection and early resolution of audio related concerns you may be asked to recover MMR data from the head unit. The following steps are instructions on how to retrieve the data from the system…
T-TT-0779-25 · Service Bulletin/Repair Instructions · issued Apr 2, 2025
Flash reprogramming allows the Electronic Control Unit (ECU) software to be updated without replacing the ECU. Flash calibration updates for specific vehicle models/ECUs are released as field-fix procedures described in…
T-SB-0021-25 · Service Bulletin/Repair Instructions · issued Feb 10, 2025
The Immobilizer and Smart Key Reset is a feature that allows the registration of new keys when all master keys are lost. Once the system is reset, all previously registered keys will be erased and can never be reused…
T-SB-0013-24 Rev1 · Service Bulletin/Repair Instructions · issued Feb 10, 2025
Flash reprogramming allows the Electronic Control Unit (ECU) software to be updated without replacing the ECU. Flash calibration updates for specific vehicle models/ECUs are released as field-fix procedures described in…
T-SB-0021-25 · Service Bulletin/Repair Instructions · issued Feb 10, 2025
TSBs are repair guidance manufacturers send to dealers — they are not recalls and repairs are not automatically free. Full documents are available on NHTSA’s site.
Safety recalls
The 2025 Toyota Grand Highlander has 3 NHTSA recall campaigns — recall repairs are free at franchised dealers regardless of the vehicle’s age.
Check whether your specific vehicle is affected
Recall campaigns often cover only certain VIN ranges. Enter your VIN on the official NHTSA site to confirm whether your vehicle is included and whether the repair is still open.
Check VIN on NHTSA →Buying a used 2025 Toyota Grand Highlander?
- · Decode the seller’s VIN with our free VIN decoder to confirm the exact year, engine and trim.
- · Check for unrepaired recalls by VIN on NHTSA’s official lookup — recall repairs are free.