2023 TOYOTA HIGHLANDER Complaints

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 seat lower cushion to improve support and comfort. After the modification, the seat became significantly more comfortable. This indicates that the original seat cushion support may be inadequate. I believe this condition may affect other vehicles of the same model and should be investigated as a potential safety concern because it can affect driver posture, comfort, concentration, and safe vehicle operation during extended driving.

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.

The brakes on this vehicle disengage and re-engage at will during braking. There are no indications of when it will occur. Brakes will disengage during low and high-speed braking, braking while going uphill, downhill, on flat roadway or during turns. This has resulted in several near miss accidents as well as debris was struck in the roadway due to being unable to stop. This vehicle was purchased new from the dealership in NM and was reported to them starting at 18,000 miles. Vehicle has been taken to numerous dealerships and reported with them as well. Toyota's answer is this is normal. Brakes disengaging and resulting in near accidents is not normal. It is now pending formal inspection from Toyota corporate by dealerships dismiss the problem as unable to replicate. This is to the point where we only drive when absolutely needed due to fear of an accident as this is the only vehicle.

Rear back seat unproper locking system. I have got rear ended while my kids were at back and I found out the rear seat slide a bit about couple inches. Dealership can't do anything of the recall at the moment.

Right after vehicle passed 60k miles mark (manufacturer warranty ended) I noticed a whining noise under load. During acceleration the noise is most noticeable between 30-50 mph speed range. If a gas pedal released the noise is gone and if pressed again the noise is coming back. The pitch increases with a speed increase. I took the car to dealership (current odometer reading 61,037 miles) and they diagnosed transmission failure. Apparently it is a very common issue with the current transmission family (UA80/UA81).

The lift gate will not close, especially during temperatures below 35 degrees. The litigate will go down a few inches, beep, then go back up. In colder temperatures below 25 degrees the lift gate will not open.

The contact owns a 2023 Toyota Highlander. The contact stated that while driving at lower speeds, pulling into an uphill driveway, the vehicle had independently accelerated while the accelerator pedal was depressed. In addition, the contact stated that she was not able to depressed in time and had crashed into the left side of the house, causing damage to the front driver-side bumper and quarter panel. The contact stated that the accident caused property damage to the garage of the house, which was covered by the insurance provider. A police report file. No injuries were sustained, and no medical attention. The vehicle was taken to a local independent mechanic, where it was diagnosed that the accelerator pedal was depressed throughout the accident; however, the brake pedal was depressed after the crash had occurred, according to the electronic data. The local dealer was contacted. The vehicle was not diagnosed or repaired. The manufacturer was made aware of the failure. The failure mileage was approximately 59,000.

The contact owns a 2023 Toyota Highlander. The contact received notification of NHTSA Campaign Number: 26V128000 (Seats) however, the part to do the recall repair was not yet available. The local dealer was contacted and confirmed that the remedy was not yet available. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was made aware of the issue. The contact had not experienced a failure.

Received a safety recall stating "Seat Back Reclinging Assembly May Not Securely Lock". Based on this information, it goes on to state that "a seat back that has not been secured in a locked position may fail to properly restrain occupants, increasing the risk of injury in the event of a crash at certain speeds." Currently there are no remedies available but it is advised that "no one sit in or use the second-row seats while the vehicle is moving until the remedy is performed on the vehicle." In speaking to headquarters as well as mutliple dealerships, the only "solution" is to provide a rental car in the amount of $42/day and they would reimburse in 6-8 weeks. There is no current remedy date. That would mean there is an out of pocket cost of $1200+ a month, in which these funds are not available to our family. I am the primary caretaker for two small children who are in car seats and required to utilize the back seat/2nd row. Since I have been advised not to use it, my car is currently unsafe to use for its intended purpose. I have been given no other solutions at this time.

The contact owns a 2023 Toyota Highlander. The contact stated that the instrument panel had been inoperable for approximately 5 months. The contact received notification of NHTSA Campaign Number: 25V595000 (ELECTRICAL SYSTEM); however, the part to do the recall repair was not yet available. The local dealer was contacted. The vehicle was not repaired. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was made aware of the failure. The failure mileage was 149,000.