2019 Toyota Highlander

The contact owns a 2019 Toyota Highlander. The contact stated that while stopped at a traffic light, the vehicle failed to accelerate as intended while depressing the accelerator pedal. No warning lights were illuminated. A passerby helped push the vehicle to the side of the road. The vehicle was towed to the dealer, where the vehicle was inspected, and the contact was informed that the transmission had failed and needed to be replaced. The vehicle was not repaired. The manufacturer was not notified of the failure. The approximate failure mileage was 143,335.

The transmission has exhibited signs of premature failure due to an internal component defect. The only indication was a whining noise when accelerating. This was first noticed around July 2025 when the car had about 78,000 miles on it. The car was later inspected by the Toyota dealer on 08/20/2025 with 79,253 miles on it. The Toyota dealer determined that "the noise being heard was the transmission becoming faulty" and prescribed replacing the transmission "as soon as possible." This is a safety concern if the transmission suddenly fails while driving, but I am not going to wait for that to happen before replacing it.

SUV has a pronounced whine coming from the transmission. This started at approximately 85,000 - 90,000 miles and has progressively gotten louder. The car currently has 96,000 miles on it. As I understand it Toyota has issues multiple technical service bulletin about this exact issue covering the 2017-2018 highlander but my 2019 is not covered even though it has the exact same 8 transmission. I have not taken this to the dealer as I understand it would not be covered under the factory power train warranty which is 5 years or 60,000 miles. I've purchased several Toyota vehicles over multiple decades, but with this issue on a vehicle that is not yet 7 years old I am a bit dissapointed and will not be purchasing any more toyota vehicles. Since this issue is specifically related to the powertrain it is most certainly a SAFETY related issue when this transmission fails.

Severe whining from drivetrain car had less then 80,000 when problem started. Dealership has no answer. Car has drivetrain transmission UA80F which has numerous documented issues and has been used in many vehicles which all has same drivetrain problems. This is known problem at Toyota Motor Sales. This issue can cause vehicle transmission to just fail and leave car valueless. The whining has been getting worse every time driven.

At approximately 64,607 miles, my 2019 Toyota Highlander experienced a complete transmission failure. The vehicle had. been properly maintained. There were no warning lights prior to the failure. The transmission began making a high-pitched whining noise, followed by difficulty shifting. Research shows that many other 2019 Highlander owners have reported the same issue, often described as the "death whine," occurring between 50,000-100,000 miles. These failures appear related to the UA80 8 -speed automatic transmission, which has already been the subject of service programs in earlier 2017-2018 Toyota vehicles. Transmission replacement cost range from $7,000 - $10,000, with parts frequently on backorder. A major drivetrain failure at such low milage, raises significant safety concerns, and appears to be a recurring defect that warrants investigation.

The contact owns a 2019 Toyota Highlander. The contact stated that while driving at various speeds, upon depressing the accelerator pedal, there was an abnormal whining sound coming from the vehicle. There was no warning light illuminated. The vehicle was taken to a local dealer, where it was diagnosed, and the contact was informed that the transmission was faulty and needed to be replaced. The vehicle was not repaired. The manufacturer was notified of the failure. The approximate failure mileage was 51,000.