2024 TOYOTA GRAND HIGHLANDER Complaints

The vehicle hesitates and does not accelerate immediately from a complete stop. This occurs more frequently when the car is on a slight incline. The delay in acceleration creates a safety concern, especially when attempting to merge into traffic or pull out onto a roadway. I have reported this issue to the dealership multiple times, but they have not taken action because they have been unable to reproduce the problem.

Front brakes were worn prematurely and rotors had to be resurfaced multiple times under warranty and once more after warranty. Premature wear would cause shaking in the steering wheel when medium to heavy braking force was applied.

When making turns under acceleration at various speeds, there is a noticeable clunk noise from the front section of the vehicle. The sound can be described as a coil that is being compressed/decompressed and creates the noise. The noise is heard when loading and unloading the steering wheel during a turn.

My car read system malfunction and come to find out there was corrosion with the wires in the internal circuit of the driver side mirror that prevents it from warning you of blind spots and pre-collision.

The contact owns a 2024 Toyota Grand Highlander. The contact stated that the display was not functioning properly, and the screen was blank while operating. The contact stated that after the "Get Started" prompt was displayed and selected, the screen would go blank. Additionally, the back over prevention camera was inoperable. The vehicle was taken to the dealer; however, the vehicle was not repaired. The manufacturer was notified of the failure. The failure mileage was 22,679.

It didn't work it didn't brake or didn't have an alert in which caused an accident

I was driving toward the perimeter of my neighborhood, approaching an arterial cross street. When I braked the pedal went straight to the floor. The breaks didn’t work despite pumping them multiple times. I also heard the engine revving. To avoid the intersection and busy street I steered into a yard, hit a retaining wall and a tree, rolled and hit a metal city street sign. All airbags deployed. I was taken to the hospital by ambulance. The car was totaled and is on a temporary hold at a salvage yard.

The transmission needs to be replaced per the dealership. I was told this on 3/7/26 with mileage of 69K. The transmission has been reported as defective to Toyota since 2016-2017 with multiple lawsuits that have been filed. According to the lawsuits found online, Toyota knowingly used the defective UA80 transmissions and failed to inform consumers when purchasing the vehicles or inform consumers the need to replace prior to the 60k warranty expiration. The 2024 Grand Highlander has been listed as one of the affected vehicles and the transmission can fail at any time which is a safety risk.

The incidents most often occur when I try to accelerate after vehicle is stopped at an intersection. The car hesitates during acceleration regardless of how much I push the gas. Once it starts to go, it feels as though the car can't shift from 1st to 2nd gear. The RPMs get up 4500 while the car is going 25-40 mph and remain there for a few seconds up to ~20 seconds. I am fearful of getting t-boned when my car hesitates while turning at an intersection, going through an intersection or pulling out from a parking lot. I have been stuck in several intersections when traffic was coming toward me, but thankfully those cars were able to avoid hitting me. I have reported the problem every time I take the car to the dealer for a service. The problem has been happening since I purchased the car in November 2024 and occurs randomly--sometimes every couple of months, sometimes days in a row. The dealer can't reproduce it, but they were able to pull a code from the transmission and found it had an acceleration error. They updated the software from a TSB, but that didn't help.

Reported issues of lag in acceleration and harsh shifting into reverse, the vehicle has been brought to the dealership multiple times stemming from shortly after previous, there are no warnings lights on. I requested the dealership provide in writing if the deemed the vehicle safe for operation. They would not do so. I requested a loaner while my vehicle is being reviewed for repurchase and was denied. When my repurchase claim was denied, I requested a reconsideration and again a loaner.