Warnings Problems of Toyota Highlander

Two weeks ago, I had my 2022 Toyota Highlander serviced at romano Toyota for my state inspection and regular maintenance. The dealership passed the inspection and did not mention any problems with my vehicle. However, just two days after the maintenance, the check engine light came on unexpectedly. The vehicle began to hesitate and shift roughly, with noticeable jerking during acceleration and delayed gear engagement. This created a safety hazard, especially when merging into traffic or crossing intersections, because the SUV would not respond quickly when pressing the accelerator. A diagnostic scan revealed transmission-related trouble codes (p2714 – pressure control solenoid d, and/or p2757 – torque converter clutch pressure control solenoid performance). I returned to the dealer, and they confirmed the issue but could not provide an immediate fix due to parts availability. They advised continuing to drive, which I feel is unsafe. The symptoms persist, and the transmission sometimes feels like it is slipping, which could result in loss of power in high-speed situations. This issue appears similar to other ua80 8-speed automatic transmission problems reported by Toyota owners from 2017–2022. Publicly available NHTSA records show over 200 similar complaints involving hesitation, rough shifting, and transmission failure. These reports suggest a potential widespread defect that may affect vehicle safety. Given the safety risk of delayed acceleration and possible transmission failure, I believe this defect needs investigation and corrective action.

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My wife was pulling into a driveway slowly approximately 5 mph when she went to stop the Toyota Highlander sped up to full speed and smash the tree while my wife was depressing the brake. All airbags were deployed and it looks like they are going to total the Toyota Highlander that has all the maintenance records very lucky to not have somebody seriously injured.

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The warning lights go on for no apparent reason. Dash instrumen just disappear for no apparent reason and then reappear randomly. Such as compass disappearing and reappearing throughout the drive at long stretches at a time. The forward and rear collision warning system just come on when nothing is close to vehicle. The blind spot monitoring system doesn’t always show up on right side of vehicle. Doesn’t matter speed or road conditions. It randomly happens throughout our regular commute and not. The warning buzzer goes off but doesn’t say what is the problem. Went off for over half an hour even when car was stopped and car turned off. Dealership not able to figure out why. Said to bring it in while doing it. By time I get there it’s done. I live 1/2 hour away. They drive it and say blind spot working like supposed to. I showed them videos of how it’s not working and they tell me it’s fine. Yet even a semi truck didn’t show up in blind spot or a ups truck. They say unless it throws a code every thing is fine. Yet I’ve had clear roads, no rain no traffic nothing and had my collision warning lights and sounds go off and not stop for up to 5-10 minutes.

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The interior lights stopped working and the drive side sun visor won’t stay up and the beep never worked when I back up to something to close.

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The rear cross traffic avoidance does not detect a person on a bicycle or motorcycle. The safety sense 2. 5 + was advertised and demoed to detect even a pedestrian walking behind the vehicle. The system on my vehicle does not work as advertised and after taking my vehicle to the dealer was informed by the service manager that the system is "intermittent at best". This is not what Toyota advertises. Dealerships apparently have no signal strength detection equipment to verify proper operation of this system. I have reviewed multiple videos of this system in operation and there were no indications of intermittent failures. I have contacted Toyota customer support and am being ignored.

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1) biggest issue: I bought my SUV new. It was advertised 30/28 mpg. My average mpg since I bought it is 22-23. 2) it slides with barely any ice or rain. It is awful. It slide backward down a small hill last year & caused me to crash. Police responded but were too busy with other incidents to write a report. I had thousands of dollars in damages & rental car fees for the 5-6 weeks it took to have it repaired. I live in the pnw and have driven in snow 35 years. I've never had such bad performance. I had to by michelin ice tires this year bc our SUV is so bad in snow & ice. 3) I was in a minor collision in a parking lot bc I didn't see another car backing out at the same time and the collision sensor didn't go off. My sensors were clean 4) when the sensors have even the smallest layer of snow they stop working. That makes the cruise control system stop working too. Very frustrating. The result of these issues is an increase by $800/mo of my auto insurance. Before this SUV I hadn't even had a speeding ticket in 14 years. Date of accident listed is approximation. Now I have 2 collisions. Wish I had purchased something else.

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