The contact owns a 2006 Toyota Sienna. Whenever the contact drives the vehicle at any speed she noticed that the accelerator pedal is depressing on its own causing the vehicle to slightly jerk forward. The vehicle was taken to the dealership where the contact was informed that there was a calibration issue. There were no prior warnings and the current and failure mileages were 30000.

- New York, NY, USA

I was driving my 2006 Toyota Sienna le through a parking garage. As I was making a sharp right-hand turn into my parking spot, the vehicle accelerated at full-throttle and smashed into a concrete wall. The front bumper was heavily damaged and I had some symptoms of whiplash for a few days. It hasn't happened since then, thankfully. I mentioned the incident to the Toyota service rep at my next scheduled maintenance, but there was no inspection made.

- Hillsboro, OR, USA

The contact owns a 2006 Toyota Sienna. While driving 40 mph and removing her foot off of the accelerator pedal it became stuck as it was released. She had to pump the brakes so that the vehicle could slow down. The dealer was contacted and stated that they were unaware of any related failures. There were no repairs made to the vehicle. The failure mileage was 12 and the current mileage was 42,484. Updated 03/10/10. Updated 06/04/10

- Methuen, MA, USA

My 2006 Toyota Sienna's accelerator gets stuck in the acceleration position. I was entering the highway so I was quickly accelerating to merge with traffic and once I merged with traffic I released the accelerator pedal to adjust my speed and the pedal remained in acceleration mode and I was unable to stop it. I tried pressing the brake pedal to stop or decrease the acceleration and that didn't work. I tried depressing the accelerator pedal again to see if it was stuck and that didn't work. Eventually the acceleration stopped on its own. This has happened to me twice and my husband once. So far this has occurred three times since we've had the vehicle. I took it into a Toyota dealer where they recorded my issue on the service invoice on 2/17/07 and were unable to duplicate the issue and remarked that my floor mats were upside down and that I should install them properly.

- Thornton, CO, USA

Failure of the adaptive cruise control module on a 2006 Toyota Sienna xle limited. The adaptive cruise control module, located under the front bumper on the passenger side, fails completely and continuously resulting in complete failure of the cruise control system. The module is not sealed properly thereby allowing moisture inside resulting in corrosion and failure of the part. When actuated, the part is designed to automatically slow the vehicle while approaching slower traffic from behind. Failure of this part while driving could result in an accident if the module does not automatically slow the vehicle properly. The vehicle in question has only 21,000 miles on it. The failure occurred at approximately 15,000 miles. Toyota of Colorado springs replaced the part at cost to the owner of the vehicle.

- Colorado Springs, CO, USA

We have a Toyota 2006 that will increase surges in engine speed when stooped which has all most caused three accidents one going into a building, also the vehicle hesitates when the accelerator is pressed on start. When sitting in traffic you have to hold your foot on the brake because you will get an engine surge which runs the RPM's up to 5,000 then it drops off. It is very dangerously because you don't know when it will happen and controlling the van is very unpredictable.

- Pasadena, MD, USA

I own a Toyota Sienna 2006 model. When in traffic the car sometimes hesitates when the accelator is pressed and at other times it surges forward dangerously. Therefore controlling the car is unpredictible. The exact response is also noticable at a traffice light or a stop sign. The failure happens often.

- Hudson, FL, USA

Sienna uncontrolled acceleration!! it happened to our 2006 Sienna yesterday 2/21/2007 - -my wife was about to stop the car while parking it at a parking space, suddenly it accelerated (very fast!) and knocked down a tree and scratched a couple of parked cars. It took a tree, some bushes and a double raised curbs to stop the van. The bumper was damaged (by the tree) and the right side of van dented. My wife is a careful driver (and with our two toddlers inside!) and she is very sure she did nothing wrong. We are very concerned to drive it again if the repair shop cannot find defect with the van. I have a similar accident report here: townhall-talk.edmunds.com/webx?14@@.F105086/0

- Mountain View, CA, USA