2020 Toyota Highlander

The contact owns a 2020 Toyota Highlander. The contact stated while driving at 35 MPH, depressing the accelerator pedal the vehicle to respond as intended and the contact could smell smoke while stopped. A dealer was contacted. The vehicle was taken to a dealer to where the diagnosed the transmission needed to be replaced. The vehicle was repaired, as the shift selector switch was replaced. The manufacturer was notified on the failure and offered to cut five thousand dollars off the cost of repair. The vehicle was not repaired. The approximate failure mileage was 41,800.

The transmission failed after 56,000 miles. Based on the research this UA80 transmission has a lot of problems and Toyota has issued TBS and even extended warranty for the previous year models in the past. The transmission failed right after the time allowance for the 5 years 60,000 mile powertrain warranty, but within the mileage.

I have a 2020 Toyota Highlander Limited, at 140k my car began whining with acceleration, I took it to the dealership and a new transmission and was quoted 9,790 alone for a new transmission. I have had Toyotas since I began driving, I have never put more than breaks and battery’s in them. It seems this transmission has been a constant problem and failing early in life. I am not sure how there is not a recall for as many reports that there is.

At approximately 75,000 miles the vehicle had a whining noise coming from the engine area. Took it to the dealer and they tested it, listened to it and determined that the transmission needed replaced. They confirmed the t-case oil is in good condition and level. No maintenance issues or concerns. Just that the transmission had gone bad. Toyota wants $8,000 to replace a transmission with low miles for a 2020 vehicle.

My 2020 Toyota Highlander experiences transmission jerking and hesitation during low speed acceleration. The issue was first reported to the dealership while under warranty but was not diagnosed. The vehicle now requires transmission replacement 7k miles over the warranty despite the issue being reported during the warranty. Toyota has refused a repair under warranty and has violated their terms of powertrain warranty. This 8 speed transmission commonly has issue during production years 2017-2022 and toyota has admitted to a production defect. Despite that they have refused a goodwill repair or a warranty repair.

Vehicle produces a noticeable whining noise under acceleration. Shifting is completely normal and no other drivability issues are present. Issue matches the pattern described in TSB T-SB-0008-21 (UA80E/UA80F front carrier assembly pinion shaft bearing failure). Multiple owners report dealers are diagnosing this as requiring full transmission replacement at $8,000–$12,000, with no partial repair or recall offered despite Toyota’s prior knowledge of this defect in earlier model years (ZJC Warranty Enhancement Program for 2017–2018). Requesting NHTSA investigation

1. The vehicle’s transmission appears to be failing. I was driving my 2020 Toyota Highlander on the freeway at about 75 mph with my family in the vehicle when the car suddenly lost power and would not accelerate properly even though the engine was still running. Because of the sudden loss of power, I had to carefully move the vehicle to the shoulder of the freeway. At the time I did not realize it may have been related to the transmission. 2.Recently I brought the vehicle to an authorized Toyota dealership for a routine oil change and because I had started hearing a whining noise when accelerating, especially above about 30 mph. After inspecting the vehicle, the dealership informed me that the transmission needs to be replaced and provided a repair estimate of approximately $9,800. The vehicle currently has around 72,000 miles and the transmission is available for inspection upon request. 3.The sudden loss of power on the freeway created a dangerous situation because traffic around us was moving at highway speeds. My family was in the vehicle and I had to maneuver the car to the shoulder while vehicles were passing at high speed, which could have resulted in a serious accident. 4.The issue has been confirmed by the authorized Toyota dealership service department. When the incident occurred and we were stopped on the shoulder of the freeway, we contacted the highway patrol because we were concerned about our safety while stopped on the highway. 5.No warning lights or messages appeared on the dashboard prior to the loss of power. The only symptom noticed before bringing the vehicle in for service was a whining noise during acceleration.