2023 Toyota Highlander Complaints

  • Unknown Or Other 05/01/2026

    driving down the road and the sunroof exploded

  • Unknown Or Other 05/01/2026

    Sunroof Shattered and it sounded like a shot gun blast. The blast was from the inside out. Weather was a mild 70 degrees.

  • Service Brakes 06/11/2026

    When applying brake, in sporadic and unpredictable circumstances, the vehicle seems to switch from regenerative braking to brake pump braking. During this switch, braking power is lost completely. The vehicle was inspected by the Dealer, they stated no issues found / unable to reproduce. This issue, if unresolved, increases risk of vehicle collision. No warning lights, no messages, no other symptoms of the problem. This issue has been present for ~1.5 years.

  • Seats 03/13/2026

    The driver’s seat lower cushion in my 2023 Toyota Highlander provided inadequate support during normal driving, particularly on the left side of the seat cushion where support for my left leg and hip area appeared insufficient. This caused uneven seating posture, increased discomfort, pressure, and difficulty maintaining a proper driving position during extended periods of driving. The seat became increasingly uncomfortable during prolonged use and caused pain, numbness, and difficulty maintaining a proper driving position. I am a professional driver and spend many hours operating the vehicle. Over time, the lack of support contributed to left-sided sciatica symptoms that required medical evaluation and physical therapy. Medical records document that prolonged sitting in the vehicle aggravated my condition and limited my ability to sit and drive comfortably. An independent upholstery specialist inspected the seat and determined that additional foam had to be added to the driver’s se...

  • Power Train 05/11/2026

    My 2023 Toyota Highlander was experiencing a high pitch whiny noise when accelerating. I looked up on line and saw that this could be a failing transmission issue. I took it into the Toyota Dealership , 6321 West Canal Drive, Kennewick, WA 99336. They confirmed my concerns. They said the transmission was toast and I could not drive it until repaired. They informed me they would have to order a replacement transmission under warranty. They further informed me that there is a backlog of requests for replacement transmissions because this is a major problem with Toyota. They have no idea how long it will be. It could be weeks or it could be months. In looking online, it appears that Toyota has been aware of this issue with the 8 speed transmission and has not been addressing the problem. My question, why isn't Toyota addressing this problem? Why does it take weeks or months to building a replacement transmission? Something needs to be done about this.

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