The contact owns a 2023 Toyota Tacoma. The contact stated that while driving at approximately 15 MPH and attempting to make a right turn, the check engine warning light illuminated, and the vehicle started jerking. The vehicle was taken to the dealer, where the contact was informed that the vehicle could not be diagnosed because the check engine warning light was not illuminated. The contact stated that the failure persisted. The manufacturer was not made aware of the failure. The vehicle was not repaired. The failure mileage was 2,000.

- El Cajon, CA, USA

When starting the truck and warming up a minute or so and then putting in reverse to back out or forward to pull into a carport, idling in gear with your foot only on the brake, the engines surges/revs up with just the slight turn of the steering wheel causing an unintended speed increase. I believe that this could cause a minor accident. It does not appear to be caused by the engine having a fast idle when cold as the idle drops when you shift into a gear. What appears to be happening is the ECU over compensates for the slight strain caused by the power steering pump when you turn the wheel. My carport is narrow and does not align exactly with the driveway, you have to jog left a foot or two and then right to pull in or back out. At the second service visit on 12/12/23 the dealer then checked and observed this behavior and reported "This is normal operation and directly related to power steering pump activation when wheel is turned in any direction" The vehicle was purchased new last May and currently has 3,995 miles on it. I think it probably had this problem from new but I had mostly just pulled straight in and out of the driveway until the fall when it was mostly parked in the carport as it was not being driven as regularly. I don't think it does it as bad when fully warmed up which takes quite a while for this engine.

- North Branford, CT, USA

Wiring harness on the vehicle is being completely replaced due to "rodent damage" according to the dealer. I am not an automotive engineer but if compromised wiring finally fails while driving I suspect a number of systems could be affected. There was no indication of this problem during vehicle operations. My insurance company agreed to pay for this about $7200. I have owned the vehicle for ten months.

- Bonne Terre, MO, USA