2019 Toyota Highlander

The vehicle is relatively new 2019 and mileage is low 45000 car was humming for no reason for a day or two and its well maintained, today at busy thoroughfare it stalled at intersection of ave u and another street and was behaving erratically due to know manufacture defect of Toyota Transmission UA80E/F that causes sudden stall and thank god have. I stalled on highway it would have been a catastrophe. I want NHTSA to acknowledge danger this poses to drivers if suden loss of power occurs suddenly hoping for a solution to this dangerous manufacture defect.

•What component or system failed or malfunctioned, and is it available for inspection upon request? Transmission and power train failure during normal operation. Vehicle was occupied by mother and two small children. Vehicle produced a whining noise, delay in shifting and power failure. No warning lights appeared to give any indication of failure prior to occurring. Vehicle is available for inspection. •How was your safety or the safety of others put at risk? Vehicle stalled during normal operation. No warning indicators were present. No ability to proceed to shoulder. Traffic hazard in middle of road. Possibility of being rear ended increased. Exiting the vehicle in traffic to determine fault increase probability of being struck. Two young children seated to the rear should vehicle be rear ended due to sudden stop could cause catastrophic injuries or death. •Has the problem been reproduced or confirmed by a dealer or independent service center? Yes, vehicle was taken and diagnostic conducted by Glendora Toyota. Vehicle was kept overnight. Dealer determined that vehicle had a transmission failure. Multiple articles and bulletins by Toyota indicating and acknowledging transmission failures in 2019 Toyota Highlander. •Has the vehicle or component been inspected by the manufacturer, police, insurance representatives or others? Vehicle has only been inspected by Glendora Toyota service personnel. •Were there any warning lamps, messages or other symptoms of the problem prior to the failure, and when did they first appear? No warning lights or indicators. Whining noise was heard prior and taken to Glendora Toyota for diagnosis. They advised no problems with vehicle.

Issue 1: I reported transmission issued to the dealership/service center where I purchased the car. They assured me its just the electronic transmission trying to find the right gear while driving. Continued to complaint about the jerks and shifting. Dealer warranty expired, then they agreed that I needed a new transmission. Fortunately I had an outside extended warranty otherwise they'd probably would have waited until that ended too. Status post the transmission, tuning, sensor replacements, spark plug replacement, and TPMS replacements all in one service. Prior to my warranty expiring, AWD, engine light and hard transmission shifts began with the new transmission. Returned repeatedly from April to November with no resolution. However, they did have me pay to replace sensors I had replaced in April several times and obtain a new battery. Issue 2: After "new" batter the car's electrical issues worsened resulting in a power failure while driving at 75 miles an hour and losing complete control of the vehicle. The power failure shut down the electronic shifter, power steering, All Wheel Drive, Traction control in raining conditions and ultimately the power assisted brakes. returned the vehicle to the service department for additional "testing" after taking a video of the fault messages were the car electrical systems shut down to auto start stop function warning light. I'm a skill driver and was able to avoid crashing during the incidents. The photos are from the latest day I dropped the vehicle off for review I took a video of the vehicle powering down for their records. They are now stating since they can't figure it out maybe I should pay them to replace the electrical wiring harnesses throughout the vehicle; a cost which exceeds the vehicle's worth to me. I'm convinced now more than ever they knew there was an electrical issue with the vehicle but waited me out and if I would have crashed and died all the blame would have been on me.

My vehicle was taken into Toyota dealership for diagnostics after experiencing a whine noise from transmission after driving. Toyota confirmed that I will need a new transmission. After researching I found that there is a defect in the transmissions for my specific type. It has been reported for years but Toyota has not addressed. Since it is a transmission failure this could lead to a breakdown while driving on highways and could risk my safety and other drivers. The estimated repair cost are currently above $8K.

Owners of 2017–2022 Toyota Highlanders, 2017–2020 Siennas, and 2018–2020 Camrys are experiencing serious transmission issues—including high-pitched whining, erratic shifting, clunks, hesitation, and premature failure. These vehicles are equipped with the UA80F (AWD) and UA80E (FWD) 8-speed automatic transmissions. Toyota quietly acknowledged the problem in Technical Service Bulletins T-SB-0160-18, T-SB-0008-21, and a limited Customer Support Program (CSP ZJC)—but only offered coverage to a narrow group of VINs. Thousands of other affected vehicles were left out, even though they show the same exact symptoms.

Transmission failure. Vehicle is at this time still operational however the transmission has developed the ever so common whining sound and sluggish shifting. Upon fluid inspection metal filings can be seen and replacement has been recommended by repair shop. The whining has been evident for some time but after investigating this issue decided to have inspected. This inspection was just completed on 11/14/25

This is the second time this year 2025 my Toyota Highlander 2019 stalled fist in the middle of of intersection and second on the drive thru in in&out. Suddenly my car died. Tried to turn on followed the on screen instructions but the car failed to turn on. The first time it happened in the middle of the intersection while waiting for the light to change, after the issue I when straight to a car shop and oreilly they have this machine to check any possible issues and he said nothing shows in his machine but he think it’s the battery but I told the guy my battery and on the car shop Midas same result no major issue found and one of the technicians says It could be the auto shot off features, that must be manually turn off since this will automatically turn on. The second incident in In&Out the car died suddenly, tried to turn the car but it was on Drive so change to stop then tried to turn on multiple times but faulted , the crews decided to help us push the car out of the drive thru since we are blocking all the customers car, the steering wheel so stiff could hardly turn. We can’t change gear from stop, I was told to push off and on manual break foot pedal and this this help able to change gear to neutral, so we can push the car out of the drive thru. No message or failure message in the screen. We just push the car in the parking lot. Tried to turn on but failed. One of in&out staff was so kind to help us, he has a portable jumpstart and the car able to start. Able to drive home safe. Now I’m afraid to turn on my car or drive far distance due to this issues.