I am filing this complaint regarding a transmission failure in my 2019 Toyota Highlander at approximately 150,000 miles that resulted in a complete loss of propulsion while driving on the highway. My husband was driving to work toward River Forest, Illinois, when he initially noticed that the vehicle would not accelerate beyond approximately 60 mph. After attending practice, he decided to return home rather than continue to the office because of the vehicle’s performance. While driving home on the highway, the vehicle progressively lost the ability to maintain speed. Despite traveling at approximately 60 mph, the vehicle slowed to approximately 30 mph, then 20 mph, and eventually lost propulsion completely. This created a serious safety concern because the vehicle could no longer maintain highway speeds or continue driving normally, potentially exposing the driver and surrounding motorists to a collision. The vehicle was subsequently taken to an independent repair facility for evaluation, and a transmission failure is suspected. The estimated cost to replace the transmission is approximately $5,000 to $10,000. I contacted Toyota Corporate to report this failure and request assistance. Although a case number was assigned, Toyota representatives informed me that they would not escalate the concern without historical maintenance documentation. We purchased the vehicle in 2024 and do not have access to its complete maintenance history. I am requesting that the federal safety agency investigate whether this transmission failure and sudden loss of propulsion represent a broader safety defect affecting Toyota Highlander vehicles.
2019 Toyota Highlander transmission complaints
Page 2 of 8: complaints 11 to 40 of 217, newest first, as owners wrote them.
The contact owns a 2019 Toyota Highlander. The contact stated that while driving at various speeds, a loud grinding and humming sound was heard intermittently from underneath the vehicle. The vehicle was taken to an independent mechanic, who diagnosed a transmission failure and warned that the transmission could experience a complete failure. The vehicle was not repaired. The mechanic contacted the manufacturer, who confirmed that the VIN was not included in a recall. The manufacturer contacted the dealer on the contact's behalf; however, no further assistance was provided. The failure mileage was approximately 65,000.
Transmission had problems with shifting gears - can hear a banging noise while shifting gears. Reported to dealer and they indicated diagnostics report showed purge valve issues. Nothing showing transmission errors. 9/20/26 significant transmission Issues occurring with eco mode turning on and off problems with shifting and no power with RPM up to 5 let off gas pedal and eco shift then transmission accelerated. Problem repeated for 40 miles on Interstate 95 with family and animals. Engine lights finally come on stating AWD error traction control On and off visit dealer an 1/8 mile from Haley Toyota Richmond VA - $280 diagnostics show transmission failure, needs to be replaced for $12000 at 87K miles warranty expired no assistance offered and "0" transmissions available throughout the United States- - $470 out of pocket tow truck to get it to a local transmission shop in Waldorf MD 25 miles from home. Definitely a safety issue when there is no acceleration on a major highway and now error codes to indicate there is a major transmission problem!
The contact owns a 2019 Toyota Highlander. The contact stated that driving the vehicle lost power and failed to properly accelerate while depressing the accelerator pedal. There was an abnormal whining sound coming from the transmission and the vehicle lunged forward and unintendedly accelerated. The vehicle was taken to the local dealer and was diagnosed with transmission failure. The contact was informed that the transmission needed to be replaced. The vehicle was not yet repaired. The contact was informed that the transmission was on back order from the manufacturer. The manufacturer was notified of the failure. The failure mileage was 74,000.
While driving along, the car suddenly begun not too shift in the middle of an intersection. Fortunately for me, this occurred in the middle of the night when there were not many cars around, otherwise serious injury would likely have occurred since it was in a busy area. I had the car towed to an independent shop first who indicated that the problem was likely a transmission failure. I subsequently had it towed to the Toyota Dealership in Wilkes-Barre PA (Motor World), who confirmed it was complete failure of the transmission, with metallic particles circulating throughout its entirety. According to Toyota, the transmission fluid in this type of car is meant to last the life of the vehicle and regular flushes should not be required. Certainly this appears to not be the case. There were no warnings of obvious symptoms that I could appreciate as a lay person. Toyota is quoting me close to $9000 for the transmission replacement, and I am also currently incurring considerable expense from rental vehicles while I figure out the outcome.
The vehicle has a loud whining noise coming from the front of the car. The noise is only heard when I am pressing the accelerator but once I let off it goes away. I took the car into the dealership for inspection and was told it was the transmission that needs to be replaced. Toyota is refusing to assist with the repair because it is out of warranty. Even though they know this is a known issue.
Catastrophic mechanical transmission failure in 2019 Toyota Highlander. Diagnosed by Toyota dealership. Said to be the same issue as the recalls submitted for 2018 and 2021 Highlanders due to them having the same transmission
I was driving on the highway and the car stopped allowing me to accelerate which almost caused major issues with an accident. I was luckily able to pull off and coast to a safe area to stop. No warning lights ever came on. It appears to be a transmission failure. I’m very lucky it didn’t occur 5 minutes prior. Currently at dealership for inspection.
2019 Toyota Highlander XLE, 137K miles. Always maintained, never any issues whatsoever, family loved our 'forever' car, UNTIL the dreaded whining noise began underneath the front floorboard. No warning, no indication, just started while driving on the highway and increasingly became louder over the two additional months I drove it. Quick online search indicates this is a very common issue. Brought to a local dealership in Southern NH, where it was quickly diagnosed as a failing transmission in need of replacement. No warranty, out of pocket cost approx. $8K. Just so happened they had a spare, remanufactured transmission already in house, since this was becoming a 'common issue'. They even had what sounded like a dedicated technician that did at least one replacement a week and had the repair time down to a science. No other warning signs, no software codes, no jerking or slipping while driving, just the noise that increased as the gas pedal was pressed. Well known issue, yet no recall for the 2019 year. Toyota forums indicate the replacement transmissions fail as well after accumulating some miles, which might explain why they only offered me a 1-yr warranty if I had replaced mine. It's for this reason I traded in this Highlander vehicle, as this vehicle was no longer safe or suitable for any long distance family driving. It was also my wife's primary vehicle to transport my young daughters, and I believed that the Highlander would have soon left them stranded. I even purchased AAA tow service for the first time in my life at [XXX], all because of this known transmission issue. I now warn everyone who is searching for this SUV to be very aware. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
The transmission developed a faint whining noise, first noticed September 2026 around 84,000 miles, along with some hesitation during operation. A Toyota dealer diagnosed internal bearing failure inside the transmission and recommended full replacement. An independent shop also quoted full replacement. Estimates ranged $8,500–$10,000. Vehicle not yet repaired; available for inspection. Safety risk: the noise is faint enough that a driver could reasonably dismiss it as imagined, unlike a loud noise or dashboard warning. No warning lamps or messages appeared at any point. This absence of a clear warning means affected drivers may keep driving unaware a component is failing internally. The vehicle also experienced hesitation during operation, which could affect safe acceleration, for example when merging into traffic. Based on documented failures of this transmission design in other vehicles, continued driving risks progression to slipping or sudden loss of motive power, with less chance a driver recognizes the need to stop before that happens. Inspected by a Toyota dealership and an independent repair shop; not inspected by manufacturer corporate, police, or insurance.
Stated hearing a whining noise when accelerating. Research shows this is a known issue witg 8 speed transmission especially Around 60k-80k miles.
The contact owns a 2019 Toyota Highlander. The contact stated that while operating the vehicle, there was a whining sound coming from the engine compartment. Additionally, the vehicle experienced hard, rough, and jerky shifting. The check engine warning light illuminated later and the message "Traction Control Off" was displayed. The vehicle was immediately driven to the local dealer and was diagnosed with transmission failure. The contact was informed that the transmission needed to be replaced. The contact stated that during routine maintenance the transmission fluid was flushed and refilled by the local dealer. The manufacturer was notified of the failure. The failure mileage was 80,000.
When I accelerate my car makes a whining noise. I had the transmission flushed and it did not help. My Toyota dealership said to drive it until it gets worse.
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.
UA80 Transmission failure. Was driving on highway when the transmission failed and lost power to the vehicle. Car was taken to Sunshine Toyota (Batte Creek MI) in 2022 and the transmission was recommended to be replaced due to a defect at 67,000 miles. The car was then sold off, and I acquired it through another dealer.
The transmission (power train) in this vehicle shows symptoms of a known defect in Toyota's UA80 8-speed. Since approximately (Aug 2026/~70k mileage), it has produced shining/grinding noised at increasing speed. these symptoms match failure patterns described in Toyota's own Tech Service Bulletin for transmission, which have led to documented cases of sudden power loss, gear slippage, and complete failure in other owners of this and related models. I have not yet experienced complete loss of propulsion, but given the documented failure patterns, there is a foreseeable risk this could occur without warning while driving, including traffic or while merging, creating a safety hazard. I took the vehicle to Toyota of Manchester, NH dealership on [XXX] and requested repair given the known TSB coverage. Toyota denied repair assistance, citing lack of dealer service records, despite transmission fluid being a lifetime-fill component unrelated to this failure mode. I am filing this proactively due to the documented risk of sudden failure, and because Toyota denied to address a known, symptomatic defect before it progresses and declined to take responsibility for the repairs or repair assistance for this defect. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
The UA80 8-speed automatic transmission failed at 87,896 miles. Symptoms began as slipping in 1st and 2nd gears and harsh jerking when accelerating from a stop, with the engine revving while the vehicle failed to move. This is a loss of motive power that can occur without warning in traffic. On 8/31/2026 a Toyota dealer diagnosed a failed transaxle requiring complete replacement, with a whine traced to the differential inside the transmission, and quoted $11,126.81. This matches the failure mode in Toyota TSB T-SB-0160-18, which Toyota addressed for some 2017-2018 VINs under Customer Support Program ZJC. My 2019 has the same UA80 unit but falls outside that program. The replacement part is backordered with no ETA per Toyota's own case portal. The vehicle is maintained on schedule and available for inspection. Toyota declined goodwill assistance and refused to provide the denial in writing.
The component that malfunctioned is the vehicle’s automatic transmission. The transmission developed a progressively worsening humming/whining noise during acceleration. The transmission is no longer available for inspection because the vehicle has been taken to an independent transmission repair shop for diagnosis and repair. The problem creates a safety concern because the transmission developed significant internal wear or damage and could potentially worsen or fail while the vehicle is being driven. A transmission failure could result in loss of power or unexpected changes in vehicle operation, increasing the risk of an accident, particularly while accelerating or merging into traffic. The problem was reproduced and confirmed by a Toyota dealership. The dealership diagnosed the noise as coming from the transmission and determined that the transmission requires replacement. The dealership recommended replacing the transmission rather than repairing the specific internal component causing the noise. The vehicle was inspected by the Toyota dealership. It is now at an independent transmission repair shop for repair. No police or insurance inspection was involved. There were no warning lights or warning messages on the dashboard before the problem. The first symptom was an unusual whining noise from the transmission area. The noise later changed into a more noticeable humming sound that increases with acceleration and vehicle speed. The vehicle continued to operate, but the abnormal transmission noise persisted and progressively became more concerning.
My 2019 Toyota Highlander AWD vehicle started making a whining noise around 85,000 miles. This high pitched whining sound occurred while accelerating and became louder and louder with time. I researched the issue and found out that the same issue had occurred on 2018 Highlanders and Toyota issued a Customer Service Bulletin T-SB-0160-18, which addressed the repair and replacement of these UA80 transmissions regardless if the warranty had expired or not. After visiting my local Toyota dealer, they confirmed that the high pitch whine was the final drive noise with the UA80 transmission and the exact same issue as the 2018 Highlander. If left unchecked, my transmission would eventually fail. Since my 2019 Highlander is not part of any recall, and at the moment, not part of the Customer Service Bulletin T-SB-0160-18, I was left to take care of the repair on my own. I contacted Toyota Corporate and requested financial assistance on the the approximate $7,000 charge to replace my transmission. Toyota told me that my car was not under warranty, but they could pay for my 50% of my cost to replace my transmission. I had to pay $3,535 (half of the total cost) to repair my transmission. Since this issue is a manufactured flaw with the assembly of the transmission, I believe the entire repair should be covered 100% by Toyota; therefore, a recall should be issued or the 2019 Highlanders should also be included in the Customer Service Bulletin T-SB-0160-18.
Winning on acceleration,
My 2019 Toyota Highlander has the same UA80 transmission that Toyota was required to fix under CUSTOMER SUPPORT PROGRAM ZJC, which covers 2017-2018, the transmission has the same whining noise and shifting issues. Toyota must accept responsibility for their manufacturing error where the washer tab was not bent properly, allowing a nut to loosen leading to the whining noise. I expect the NHTS to require them to cover their 2019's as well, as a consumer we are getting screwed here.
In April of 2026 started hearing a whining noise in the engine of my 2019 Toyota Highlander. The vehicle has 110471 miles. Have had it checked at the dealership twice and a mechanic twice. All have said the transmission is going out. I have had the transmission fluid replaced, but it did not help. Apparently, Toyota knew about this problem and still sold the car. I am unable to drive car because I am afraid it is going to break down. The dealership said they could replace the transmission for 8762.64 dollars. Toyota has since stopped making UA80 eight speed auto transmission.
I have a 2019 Highlander XLE AWD that had 85000 miles when the transmission started whining. It got worse pretty quickly so iI took it to a transmission shop. They rebuilt it for $6700.00. I drove it for another 9-10 thousand miles and the whine is back. I'm not sinking another $6700.00 into another transmission. I've talked to several transmission shops and I'm being told there isn't a true fix. Rebuild it and it will come back, guaranteed. What recourse do I have? The car only has 102,000 miles which is typically nothing for a Toyota. But it all started at 85000. Something needs to be done. I see programs for the 2017 and 2018 models but not the 2019. It's the same transmission. The issues crop up after the vehicle has gone out of warranty.
Hundreds of thousands of 2017–2022 gas-powered Toyota Highlanders (equipped with UA80E/UA80F 8-speed transmissions) are experiencing high-pitched whining noises, hard or erratic shifting, and sudden hesitation. This is caused by a factory defect where a retaining nut and locking tab in the counter drive gear sub-assembly were improperly installed, causing premature internal wear and gear movement
I have the high pitch whine coming from transmission. It is a known issue with Toyota but they refuse to look into it since my VIN falls outside their recall list. This is the same transmission as previous years and has the exact same issues. This is a safety issue that needs to be addressed immediately.
My car has been making a whining noise upon acceleration. It stops whining as soon as you release the acceleration I had a mechanic look at it who verified transmission failure.
My Toyota Highlander 2019 began to produce a whining noise that orginates in the transmission at about 89000 miles. An independent mechanic examined the vehicle and deteremined that the noise is well documented. After conducting research, I found that the issue is caused by improper assembly and the only repair is a complete replacement of the transmission. I also discovered that there is a recall on the 2017-2019 Toyota Highlander due to the 8 speed transmission which is also used in my vehicle. The idea that the 2019-2022 Toyota Highlanders are NOT included in this recall is completely unreasonable. These vehicles utilize the same 8-speed transmission and the whining noise tends to surface after 60, 000 miles - about four to five years based on useage. The whining noise began without warning or symptoms. The vehicle drove without issues and we intended on driving this vehicle into retirement considering the reputation Toyota had on building reliable vehicles. I will never purchase or recommend the purchase of a Toyota vehicle! The idea that repeated transmission failures, without an univeral recall for all years affected, shows that the comsumer is not respected. I would enjoy understanding the logic and data that enabled Toyota to limit the recall to just three production year when the 8-speed transmission spanned six years of production (2017-2022). I am now forced to look into replacing the transmission with potentionally another faulty, improperly assembled 8-speed transmission.
I am reporting a potential premature transmission failure in my 2019 Toyota Highlander AWD. At approximately 89,000 miles, the vehicle developed a noticeable and persistent whining noise coming from the transmission/drivetrain area. The noise continued despite transmission service and has progressed to the point where the vehicle requires a transmission replacement. I have had the vehicle evaluated by three separate repair facilities, including transmission specialists. All three independently determined that the transmission has failed and requires replacement. Repair estimates range from approximately $7,200 to $12,000. A complete transmission failure at approximately 89,000 miles is unexpected and raises concerns about a possible design or manufacturing defect. A transmission failure while driving could cause loss of power, inability to accelerate, reduced control of the vehicle, or create a dangerous situation while merging, entering traffic, or traveling at highway speeds. The vehicle has been maintained and used normally. I am submitting this complaint because I believe this issue may affect other Toyota Highlander owners and should be investigated for a potential safety-related defect.
8 speed transmission faulty
My 2019 Toyota Highlander XLE V6 developed a serious transmission-related safety problem that ultimately resulted in a sudden loss of propulsion while driving. For some time before the failure, I had noticed an unusual startup noise during cold starts and mentioned this concern during routine service visits at an authorized Toyota dealership. I was advised that the condition was normal. Prior to the major failure, the vehicle otherwise remained drivable. On December 2, 2025, the vehicle underwent scheduled maintenance at an authorized Toyota dealership, including a transmission fluid service. Within the following days, during cold weather conditions (approximately 35°F), the vehicle began exhibiting transmission shudder, RPM flare, harsh torque converter engagement, and illuminated both the Check Engine and Traction Control warning lights. I immediately returned the vehicle to the servicing dealership and reported that these symptoms had appeared following the maintenance visit. After inspection, I was informed that the torque converter clutch actuator had failed and that the transmission would require replacement or rebuilding. The vehicle was released to me, and I was not advised that it was unsafe to drive or that it should not be operated. On the morning of December 11, 2025, while driving home from work in approximately 31°F temperatures, the vehicle suddenly lost propulsion. The engine RPM increased, but the vehicle would not move under its own power. I narrowly avoided being rear-ended by a truck traveling behind me. I believe this created a significant risk of a serious collision. The vehicle was towed and remained out of service for approximately two months because replacement transmissions were difficult to obtain. The transmission was ultimately replaced with a used transmission assembly at a total repair cost of approximately $7,220. After the transmission replacement, the unusual startup noise that I had previously reported completely disappeared,
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