The contact owns a 2007 Toyota Tacoma. While driving approximately 45-50 mph, the vehicle lunged forward on its own. The contact applied the brakes and the vehicle slowed down. Previously, while driving uphill, the vehicle accelerated on its own. The contact heard a grinding noise and felt a lunging motion. She deactivated the cruise control and applied the brakes. The vehicle then slowed down. The contact continued driving and once the vehicle reached 65 mph with the cruise control activated, the failure recurred. The contact deactivated the cruise control again and the problem ceased. The vehicle was taken to the dealer, but they were unable to duplicate and diagnose the failure. The powertrain was unknown. The current mileage was 10,243 and failure mileage was 9,000.

- French Camp, CA, USA

This E-mail concerns the operation of the cruise control system, and concerns all vehicles that operate this way. I recently purchased a new truck with a 4 cylinder automatic with a cruise control. I was not told and did not know that the cruise will activate the passing gear to help maintain the speed of car. The concern that I have about this is, if you are set at 70 mph and have a blowout before you can tell what has happened the cruise control can activate the passing gear and easily cause the vehicle to go out of control, and when hitting the brake to stopped cruise and the car could loose it. I am telling you about this because there have been a number of cars that have wrecked because of loosing control and jumping the medium and so on. This could have been the cause. Also I have found that the cruise kicked in the passing gear on most hills when set than when it was not set.. I have retraced my path on a given stretch and with the cruise control off there was only one hill that it needed more help to maintain the same speed. Someone of authority needs to investigate these problems. I believe this can be a very serious thing.

- West Columbia, SC, USA

The contact owns a 2007 Toyota Tacoma. While driving downhill at 60 mph with the cruise control activated, the vehicle went into overdrive and accelerated forward without warning. The vehicle's RPM accelerated from two to more than five within seconds. The dealer stated that this is the vehicle's normal operation. The current and failure mileages were 1,900.

- Excello , MO, USA