Toyota Sienna owners have reported 464 vehicle speed control related problems since 1996. Table 1 shows the 12 most common vehicle speed control problems. The number one most common problem is related to the vehicle's vehicle speed control (279 problems). The second most common problem is related to the vehicle's car accelerates on its own (84 problems). For details of each of the problem category, use the links in the table.
Looked online to see if other Sienna drivers had the same issue with the hybrid system. Brakes are accelerating a bit even when already pressing on the brakes. It has happened enough times to be concerning. Read details...
The van has sudden acceleration problem at times it is hard to slow it down even stop it. The problem mainly occurs from stop and go especially if it has been parked for few hours. Read details...
Yesterday afternoon, I was driving on a semi busy road in tucson, arizona at about 40 mph and the van suddenly began to accelerate. I immediately thought I had hit the cruise control button but the dash showed no indication that this was case. Read details...
The contact owns a 2004 Toyota Sienna. The contact stated that while driving approximately 65 mph the vehicle suddenly experienced unintended acceleration and the speed of the vehicle increased to over 90 mph. Read details...
As I was accelerating on a city street, going uphill, the accelerator got stuck in the pedal-down position and the car started revving on its own. At the time, I was going about 10-15 mph and the car accelerated to about 25mph before I was able to stop it. Read details...