The contact owns a 2010 Lexus GX460 SUV. The cruise control was activated while the contact was driving up a sight incline at approximately 62 mph. An unexpected increase of acceleration occurred. The engine began to rev excessively high and the rmps increased to 4,300. The cruise control was deactivated with the brake pedal engaged. The vehicle was able to come to a stop. The vehicle was taken to an authorized dealer for diagnostic testing. The technician informed that the vehicle required further inspection and would analyze the data. The vehicle remained at the dealer at the time of the complaint. The failure mileage was 2,800. The consumer stated there was a vibration in the steering wheel and the emergency brake would not hold, it would go down to the floor. Also, when trying to pass another vehicle, the vehicle hesitated. Updated 10/12/10

- Denton, TX, USA