Automatic Transmission problems of the 2006 Toyota Tundra

Toyota Tundra 2006 double cab 4wd automatic transmission. I was 4 wheeling and stopped behind a polaris, by approximately 5 feet. I was in drive and 4wd and brakes applied. I stopped because the polaris had stopped. All of a sudden with the brakes applied my Tundra lunged forward at a very high rpm crashing into the polaris. At that point I put the transmission into park and shut the engine off. Had I not responded with the action I took I would have shoved the polaris with 2 people into a very deep wash. Needless to say there is a great deal of damage done to my Toyota. The Toyota has major damage to the front end. Had I not taken the action that I did, we all would have ended up in the deep wash with major injuries. When I arrived home I immediately called tim's Toyota in prescott arizona where the vehicle was purchased. The 2 people that could help me with the situation were not available so a call to them tomorrow will be in order. I have not contacted my insurance as yet as I feel that Toyota is the responsible party for the accident. I had written to you quite a long time ago regarding the cruise control surging to 5000 rpm's when approaching even a minor incline. So I don't use it anymore. I am afraid to drive my truck into my garage for fear that the truck will lunge forward, only this time it will crash into my hvac and water heater, both are on propane.

The contact owns a 2006 Toyota Tundra. The contact was driving 30 mph and there was an abnormal increase in engine rpms causing the transmission not to shift correctly. She depressed the brakes and the tachometer increased to 2 and would not decline. In addition, when she attempted to shift into reverse and released the brakes, the rear tires began to spin and she crashed rear-end into a boulder. The rear bumper was damaged and there were no injuries. The dealer stated they were advised by the manufacturer not to diagnose the vehicle. The vehicle was neither diagnosed nor repaired. The contact stated that the vehicle has had three transmissions since purchase. The failure mileage was 20,000 and the current mileage was 53,000. Updated 11/9/10 the consumer stated the transmission had to be replaced three times. She also stated there were times when the vehicle would just take off at a high speed when the accelerator pedal was tapped lightly. When the vehicle was started, the engine would race extremely high. The high idle would also effect the way the vehicle shifted into gear. Updated 11/12/10 the drivers side has a grommet and the floor board has a grommet, but there is no hook to hold the floor mat in place. Also, the transmission has been replaced three times. Updated 11/1/610.