NHTSA Complaint #11584324 — 2023 TOYOTA TACOMA

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.