Toyota Highlander Electrical problems by year

On October 22, 2026 at 7:55pm I was slowly pulling into a parking spot at our community building applying the brake when the engine started rapidly accelerating causing the car to jump over the curbing even as I continued to press on the brake pedal. I wasn't able to stop the vehicle before it crashed into the community building wall. The engine was still racing but the vehicle being lodged in the wall and corner support kept the vehicle from going further into the building. I was finally able to shut off the engine and luckily for me the airbag system didn't deploy.

Headlight system malfunction, pre-collision system malfunction, LTA malfunction, SRS airbag system malfunction and SRS malfunction lights came on after start up.

On November 19, 2025, the 12.3-inch infotainment display in my 2021 Toyota Highlander Limited went black and never recovered. That screen is the only display for the rear-view backup camera. With it dead, there is no backup camera image when reversing. The failure started as an intermittent blank screen with the reverse camera still working, then progressed to a fully dead screen including the backup camera display. A replacement display unit did not fix it. Toyota has acknowledged this defect in Technical Service...

I am writing to formally express my dissatisfaction regarding a failure of the power liftgate on my Toyota Highlander and the fact that I was required to pay out of pocket to have it repaired. The liftgate is an important and frequently used component of the vehicle, and I did not expect it to fail under normal use. When the liftgate stopped functioning properly, I was faced with an unexpected and costly repair expense. I believe Toyota should take responsibility for this failure, particularly given the nature of...

LTA malfunction, SRS airbag system malfunction, pre-collision system malfunction and headlight system malfunction lights came on.

Pre-collision system malfunction and headlight system malfunction lights came on.

Front camera unavailable, PKSB malfunction, Pre-collision system malfunction and headlight system malfunction lights came on.

Odometer Fraud. The contact purchased a 2008 Toyota Highlander. It was discovered that there was a mileage discrepancy. The vehicle was a private sale. The contact stated that at the time of purchase the mileage was 106,000. After obtaining a Carfax report, the contact became aware that the mileage listed was 264,000.

develop a high-pitched whine, shuddering, or harsh shifting between 25 and 45 mph, which can lead to premature wear or complete failure. Also, On/ Off from no where and stopped in the middle of the road

The contact owns a 2021 Toyota Highlander. While driving 20 MPH uphill, the messages "Engine Failure," "Brake Failure," and "Pull Over to A Safe Place, See Owner's Manual" were displayed, and several unknown warning lights illuminated. The contact turned off and restarted the vehicle, but the failure persisted. After a second restart, the message "See Dealer" was displayed with the check engine warning light illuminated. After a third restart, the vehicle was driving rough while the accelerator pedal was depressed. The vehicle was taken to the dealer. The manufacturer was notified of the failure by phone. The failure mileage was approximately 123,000.

The contact owns a 2022 Toyota Highlander. The contact stated that while driving at an undisclosed speed around an S-curb, the vehicle jerked into the nearby lane. The local dealer was contacted. The failure mileage was approximately 55,000.

My 2019 Highlander was driving totally normal, when all of a sudden the transmission started slipping and then would no longer accelerate. I was on a windy back road in Alaska with no service, so after letting it sit for a bit I tried to drive it again. It then drove maybe 1/2 more miles before slipping completely and no longer accelerating. No check engine lights came up. I got it towed to my house where a mechanic took a quick scan and said there was a number of transmission codes popping up.

The factory Blizzard Pearl paint on this vehicle is experiencing severe chemical delamination down to the bare primer and sheet metal on multiple body panels. This structural failure aligns exactly with Toyota Customer Support Program ZKG. Large sheets of brittle paint regularly flake and peel off while driving at highway speeds, creating a projectile and visibility hazard for following motorists. Despite this being a known manufacturing defect, the vehicle falls outside of Toyota's arbitrary 10-year secondary extension window, leaving a recognized factory flaw unremedied.

On August 24, 2026, my vehicle was parked, turned off, and locked for more than 6 hours in a parking lot. Without warning, the vehicle experienced a spontaneous thermal event/self combustion. The fire and thermal damage were entirely localized to the dashboard area inside the passenger cabin. The engine compartment, battery area and front mechanical components remained completely unaffected by the fire. The vehicle was off, motor was cold and car was closed and parked for about 6 hours when this incident occurred.

The a/c condenser was damaged due to impact of road debris. This caused loss of proper system operation. The cost to repair was $1100+. The debris entered thru the front grill, which has nothing in place to prevent debris from entering the engine compartment.