*Median odometer reading when the problem happened, where owners gave one. One complaint can name several problem areas.
Power train
Transmission Whining Noise Detected, Automatic Shifting Difficulties, Reduced Power & Acceleration Concerns. Dealer inspected and confirmed transmission failure. Required Dealer replacement under power train warranty. Defect known to exist in Toyota 6 speed Automatic U80A transmissions. Transmission is known to be defective and unreliable, potentially causing catostrophic injury to persons and property with use and operation.
Oct 19, 2026Unknown or other
On XXX, at about 2:00 PM we were driving south on I95 somewhere in [XXX] when we heard a very loud noise. Thinking it was a rock hitting the windshield we looked but could see no cracks or chips so we kept driving on our trip to [XXX]. The next day it was windy and we thought it was unusually noisy inside the vehicle but we just thought it was the wind. After driving around in [XXX] we said it was unusually noisy inside so I said I would stand on the door sill to look at the roof and thatâs when I saw the hole in the sunroof. That night, Sunday, XXX, I called our insurance company to report the damage. They said that an adjuster would contact us on Monday. Meanwhile I started to…
Oct 17, 2026Forward collision avoidance › Warnings
Incident occurred on XXX at 9:46AM PST, [XXX]. When applying brakes normally to come to a gradual stop behind another vehicle stopped at a stop sign on a slight decline, PCS collision warning lights enabled and vehicle lurched forward while my foot was on brake. This is not to be confused with automatic braking behavior as front collision warning lights in driver information center flashed red. Rather, vehicle lurched forward as if accelerating once within feet of vehicle in front. Then, vehicle rocked front to back multiple times with my foot still on the brake, as if Drive and Reverse was being quickly and intermittently engaged back and forth about 1 second apart. Had my foot not been…
Oct 19, 2026Steering
Dear NHTSA Vehicle Safety Team, I am writing to report a serious steering system issue to my 2024 Toyota Grand Highlander Hybrid and to request that NHTSA review this incident for potential safety concerns affecting other owners of the same vehicle model. Vehicle Information - Make and Model: 2024 Toyota Grand Highlander Hybrid - VIN: [XXX] - Mileage at the time of the issue: Approximately 66,000 miles - Component involved: Steering rack/rack-and-pinion assembly Sequence of Events 1. Steering System Failure At 65,000 miles, i started having minor issues with the steering system, but was driving fine. At 85,000 miles i had the vehicle examined at Toyota, (cause steering rack just stuck)…
Oct 1, 2026Fuel/propulsion system
Has a VERY strong gas smell and fumes near gas tank after car has been idling.
Aug 24, 2026Unknown or other
2024 Toyota Grand Highlander Hybrid AWD. Vehicle exhibits a severe metallic "clunk" or "boom" noise and impact from the undercarriage specifically when reversing under moderate to firm acceleration. This is a recurring issue reported by numerous owners of this model, related to harsh powertrain engagement and movement when changing direction under load. This issue is NOT related to wheel rotation, brakes, or CV axles. The vehicle has approximately 70,000 miles, has been driven strictly on paved roads with no towing or off-road use, and has no active warning lights. The sudden mechanical shock while engaging reverse poses a potential safety and reliability concern regarding drivetrain…
Sep 1, 2026Engine
The air conditioning system on my 2024 Grand Highlander failed due to a punctured AC condenser caused by road debris passing through the front grille during normal driving. The front fascia has large open apertures with no protective mesh or screening, leaving the condenser, radiator, and other heat exchangers directly exposed to rocks and debris. The condenser face shows multiple debris strikes, with one impact puncturing the core and causing complete refrigerant loss and AC failure at approximately 62,000 miles. The vehicle worked normally when parked and the AC was completely dead one week later due to the slow refrigerant leak from the puncture. Diagnosis was performed by [XXX] Toyota…
Sep 15, 2026Fuel/propulsion system
I own a 2024 Toyota Grand Highlander Hybrid MAX Platinum, purchased brand new in February 2024 and now with approximately 30,400 miles. Since the first few weeks, the vehicle has had an ongoing fuel tank/range issue. The fuel tank is rated at approximately 17 gallons, but the gas pump consistently shuts off after only 10â12 gallons, even when the vehicle indicates 0 miles to empty. It accepts approximately the same amount whether I refuel with 80, 20, or 0 miles remaining. After filling, the vehicle reports the tank as full and but generally shows only 270â290 miles of estimated range. The actual miles driven before requiring fill up is 230-250 miles. Toyota issued T-SB-0060-25 (Low…
Feb 1, 2024
Owner complaints are submitted to NHTSA by the public and are not verified. Shown as filed (NHTSA removes personal details); long reports are shortened.
