Transmission failure. Unexpectedly failed while driving. Failure to accelerate before total failure. Repaired with used transmission since new ones are unavailable. Called Toyota to report the failure. No acknowledgement of any failure mechanism.
2019 Toyota Highlander transmission complaints
Page 4 of 8: complaints 71 to 100 of 217, newest first, as owners wrote them.
While driving, my vehicle experienced a sudden transmission failure. The vehicle began to lose power and was unable to shift properly, making it difficult and unsafe to continue driving. I had the vehicle inspected and the transmission is currently being rebuilt. The mechanic performing the rebuild has stated that the failure was caused by a faulty build and a manufacturer defect, not normal wear and tear. I am currently awaiting written documentation from the mechanic confirming this, which will be submitted once received.
My Toyota was just in the shop for 100,000 mile service and investigation of whining noise upon acceleration. Was notified that the transmission needs replaced and will cost over $7500 . Transmissions are supposedly on back order. Upon further investigation, discovered there is a known issue with 2017-2019 Highlander transmissions that Toyota failed to issue a recall and failed to notify owners of these models. Repairs have not been made as transmissions are on backorder due to the magnitude of the issue.
On Sunday, February 1st 2026 during sub-freezing temperatures The vehicle's 8-speed automatic transmission (UA80) experienced a complete mechanical failure while driving. This resulted in a sudden and total loss of vehicle propulsion, requiring the car to be towed. Prior to the failure, the vehicle's AWD system indicator light was illuminated. The failure was diagnosed by Alexandria Toyota on February 3rd of 2026 as a catastrophic internal transmission failure requiring full replacement of the transmission Assembly with cooler (see attached quote). This defect causes an unreasonable safety risk by potentially stranding the vehicle in moving traffic or causing a crash due to unexpected loss of power.
Transmission starting making a whining noise failing at 106,950 miles. Inspection by transmission shop shows issue related to UA80E/F transmissions. Concerns or increased inspection for transmission were never mentioned during prior maintenance with dealerships or any notices sent out to owners. No warnings or codes recorded on system ECO. •Toyota Tech Tip T TT 0410 •Bulletin T SB 0160 18 •Bulletin T SB 0008 21 •Bulletin T SB 0122 20 •Bulletin T SB 0087 23
Transmission has High pitch when accelerating
1. What component or system failed or malfunctioned? System: Power Train: Automatic Transmission Specific Component: UA80 8-Speed Automatic Transmission (Internal Failure) Available for Inspection: Yes, the vehicle is currently available. 2. How was your safety or the safety of others put at risk? While merging onto the highway, the transmission failed to upshift, resulting in a sudden and unexpected loss of acceleration. The vehicle could not reach or maintain highway speeds (speed limit). This created an immediate hazard as I was unable to keep up with the flow of traffic, forcing me to make an emergency exit across multiple lanes while moving significantly slower than other vehicles. The loss of motive power increased the risk of a high-speed rear-end collision. 3. Has the problem been reproduced or confirmed by a dealer? Yes. The problem was confirmed by Heritage Toyota Service. The technicians confirmed an internal transmission failure. A secondary consultation with a transmission specialist (AAMCO) also identified the failure as a known mechanical defect common to this transmission model. 4. Has the vehicle been inspected by the manufacturer... or others? Yes, it has been inspected by the authorized Toyota Dealership listed above. I have also reported the issue to Toyota Brand Engagement (National), but a corporate field inspection (DSPM) has not yet been performed. 5. Were there any warning lamps... or other symptoms? Symptoms: A distinct whining noise from the engine/transmission area that increased with vehicle speed. Prior Events: The vehicle was taken to the dealer specifically for this noise. The dealer performed a fluid change and released the vehicle. The catastrophic failure (loss of power) occurred less than 24 hours after leaving the dealership. No dashboard warning lights illuminated prior to the loss of power.
The transmission is whining and is going out it is shifting hard now.
Transmission failed catastrophically at 133,000 miles while vehicle was in operation at a busy intersection. Vehicle became immobilized and unable to move. Unable to safely exit vehicle due to traffic. Stranded for 60-90 minutes with multiple vehicles nearly striking the disabled vehicle, creating a serious safety hazard. Police were called but failed to show up. Prior to failure: Vehicle exhibited loud whining noise during initial startup that would sometimes lessen or stop. This symptom appeared sometime within the last 1,000 miles of operation. Toyota dealer service at 132k miles noted transmission fluid was "Ok" during routine maintenance. At 133k miles transmission failed catastrophically. Independent transmission service center reports burnt-smelling transmission fluid indicating severe thermal damage and transmission failure. Problem confirmed by two independent service centers. Transmission is available for inspection upon request. Vehicle is not drivable.
The car started making a wining noise while accelerating. The car was brought to my local dealer where I always have my service done and they said I need a new transmission. The cost will be approx. $9,300.00. The car has less than 84,000 miles on it and is just 6 years old. Every recommend service has been done to date.
128,000 Miles and the transmission is making a whining sound that progressively gets worse with acceleration. Also has occasional erratic shift associated with no throttle response. Sound is obnoxiously loud on the freeway deeming it almost undriveable.
Vehicle experienced sudden loss of power and severe hesitation from a stop. Acceleration is extremely weak from approximately 0–20 mph, then returns to normal once moving. Traction control system automatically disables itself and check engine light illuminates. Vehicle feels unsafe when pulling into traffic or intersections due to delayed acceleration. Diagnostic trouble codes retrieved: P0740 (Torque Converter Clutch Actuator Stuck On), P0745 (Pressure Control Solenoid A Stuck Off), and P2713 (Pressure Control Solenoid D Stuck Off). Dealer recommended full transmission replacement costing over $11,000 at only 79,000 miles. Dealer stated this failure is common on this model. Similar failures have been reported by other owners of Toyota vehicles equipped with the UA80 8-speed automatic transmission. No recall currently exists for this issue. This condition presents a safety concern due to delayed acceleration when entering traffic and loss of traction control functionality. Vehicle is being driven minimally until repaired.
On Monday December 15, 2025 our transmission failed as we began to drive up a small grade in between two sets of railroad tracks at the intersection of Cary, Ushers and Coons Crossing Road in the county of Saratoga, NY. If it had failed on one of the two sets of tracks it may have endangered us. On December 17, 2025 Northway Toyota in Latham, NY diagnosed the transmission failure at their dealership. I had attached the appropriate documents. The only warning for failure was a whining sound a few days leading up to the failure, but we thought it was a normal sound from the engine which we have subsequently learned was a sign of a failing transmission as we investigated prior complaints from others.
2019 highlander has a winding sound coming from engine area, no warning lights turned on but winding sound only occurs when in drive and accelerating. vehicle has 90000 miles and winding sound started around 80000 miles. i brought highlander to toyota service and they stated they heard the sound but didnt diagnose it.
I am experiencing a turbine whining noise from my transmission while under load. This has been reported to be an issue that stem from incorrect assembly of the locking washer to the locking nut in the UA80F 8 speed transmission. Toyota only provided extended warranty to 2017-2018 vehicles but not all vehicles that were manufactured with the same exact transmission. This whine is a sign of premature transmission failure that can occur at any given time while driving which is an extreme safety hazard. Please do something to force Toyota to be held accountable of their poor manufacturing and fix this safety hazard via recall. There is a law suit from James LeBoutheller pertaining to this issue.
Transmission failure resulted in sudden loss of power while driving, creating a safety risk in traffic. Vehicle was unable to accelerate and required immediate repair. Put myself and my children at risk, as the car suddenly died while I was driving it. Prior to this, there were not issues. Has been routinely maintained and only has approx 83k miles. Toyota agreed that the transmission is the only issue with my car but won't cover the cost to replace it (10k) or the cost of a loaner vehicle. I have been without a car for almost a month while the (refurbished) transmission is on backorder.
Good Morning, I purchased a 2019 Toyota Highlander at a Toyota dealership and the transmission has died at 68,000. It died while driving in heavy traffic with my kids in the car. Toyota has completed an inspection of the transmission and determined that it needed to be replaced. They also said that because the transmissions are in back order due to all of the failures, I would have to wait 45-60 days to get a remanufactured transmission. I've also heard that they are replacing these transmissions with the same ones that are failing and only offering a 1 year warranty. Ive already spoke with Toyota Brand engagement and they told me that there was nothing that they could do.
Transmission began to manifest gear shifting issues. Took to mechanic shop to have diagnosed and found premature wear. The recommendation was to replace this transmission. However there are no factory replacements for this transmission and the only alternative is a used transmission replacement. Parts can't be sourced for even a rebuild. This vehicle has 96k miles on it. In review of recommended, routine services for this vehicle, transmission service is not recommended due to being a "sealed" transmission. Apparently this is a known issue as documented by Toyota under TSB "CSP ZJC". In this particular situation there have not been any warning lights. Replacement quote for a used transmission was $15,000 on 01/12/2025.
Transmission stopped working while I was driving. Could not drive the car.
With under 80,000 miles, my 2019 Toyota Highlander XLE needed a full transmission replacement. Noticed some rough gear changes for about 2-weeks (mostly changing from Park to Drive), then on my drive home from work, the RPM spiked high and all the sensor lights came on (AWD, Check Engine, etc). I drove the rest of the way with hazard lights in limp-mode. Took my car into a Toyota dealer service center (Kenosha WI), they did not make any repairs - just disabled the sensor lights and did a test drive - ended up keeping a 2nd day and replaced transmission fluid since they were seeing oddities with shifting. Within 1 week, the same thing happened. This time, I could hardly make it above 20 mph, basically no acceleration. Received 2 quotes from independent transmission specialists / repair shops - both confirmed I needed a new transmission. They said the car is unsafe to drive until it is replaced. This was right near my 6-year 100,000 warranty. Perhaps a few months beyond 6 years. Toyota opted not to make any repairs / improvements. Left the car in unsafe condition for me and my kids. Toyota then quoted $16,346 for a new transmission. Other quotes I received were $10,000 LESS than Toyota, using new Toyota parts. Seemed like price gauging to me.
We began to hear a whine coming from the front of our 2019 Highlander. The tone of the whine got higher as we picked up speed. We went immediately for a preliminary review at the dealer who indicated that it was a known transmission problem in several model years, and the whine would only become more pronounced. We further understood that the very same transmission in our 2019 Highlander has been covered by a recall in years just prior and after 2019, but not for our particular VIN. Nevertheless, it is obvious to even the Toyota dealer mechanic that it is the same issue. The car has been carefully used and maintained since purchasing it new--it only has approximately 74,000. We expect our transmission fix or replacement to be covered.
Per my mechanic (fyi: 56k miles on vehicle): I test drove the vehicle and can hear a noticeable whine type noise when accelerating the noise goes away when getting off throttle. I put it on lift and the noise is coming from the transmission pump and sounds like cavitation. I checked the fluid level and it was overfull, very dark and has some very fine metal debris in the fluid. Something is coming apart inside the transmission has caused a catastrophic failure. The transmission will need replaced. I called Toyota to check availability and these transmission are on a restricted order. The dealer would need to call corporate Toyota to see what is needed to even order one. Usually a restricted order means they are on the edge of a back-order or having problems with the part and are working on a resolution or update. I did not see any recalls, service campaigns, or technical service bulletins for this transmission, but it sounds like the 2017-2021 V6 AWD UA80F transmissions are having issues. It is a long shot, but given the low mileage, you could try contacting Toyota to see if there is anything they can do for you. I know the factory warranty is 60 months or 60,000 miles on the powertrain. You are out on the time, but if they are having a known issue, then maybe they will help you.
transmission problems at 62000 miles high pitched whine with acceleration
2019 Toyota Highlander with approx 178000 miles, UA80E transmission sudden failure while traveling approximately 30 mph, on city street. Manually pushed vehicle to safety away from traffic and unto a parking lot. That same evening drove vehicle about 20 feet to a more secure parking spot. VEHICLE HAS NOT BEEN MOVED SINCE 12/15/25. No leaks, no spills etc EXTREMELY DANGEROUS.
The transmission failed while going up a steep hill the car lost power and shut off. Could have caused seriously property and body damage if traffic or people were around. Luckily no accident happened but could certainly cause an accident if the circumstances are different. Please make an official complain so this could be fully investigated.
Our transmission is making a high pitched whining sound when accelerating.
premature failure of UA80F transmission with 80,000 miles on vehicle which has been regularly serviced and maintained. Failure symptoms demonstrated match documented cases exactly resulting in the ultimate and complete failure of the transmission resulting in the vehicle being towed in to the dealer for a repair. Repair bill upwards of $10,000 however being told parts not available leaving me with a 40k vehicle that is unable to be repaired.
At around 107,000 miles, we started hearing griding/whining noises from the engine compartment. After multiple inspections from 3 different auto shops a Toyota dealership confirmed the transmission and transfer case had failed and needed to be completely replaced. There were NO warning lamps, messages or other symptoms besides the griding/whinig noise prior to the failure. After the Toyota dealership diagnosed the issue, we stopped using the vehicle until Toyota could make the necessary repairs for the vehicle to be safely driven. The Toyota dealership made the necessary repairs that we paid for on 10/28/25. We are aware that this is a known defect by Toyota on the UA80 Transmission and Technical Service Bulletins have been released. We demand a recall and our out of pocket repair cost money back of $12,623.31.
8-speed automatic transmission failing. Noticeable whining sound that increases with acceleration, however no warning lights or messages. Metal shavings found in fluid upon inspection by independent mechanic. This is exactly in line with the lawsuit, filed in the U.S. District Court for the Central District of California by plaintiff [XXX] . INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
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 the federal safety agency to acknowledge danger this poses to drivers if suden loss of power occurs suddenly hoping for a solution to this dangerous manufacture defect.
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