One problem related to speed control cable has been reported for the 2006 Toyota Sienna. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2006 Toyota Sienna based on all problems reported for the 2006 Sienna.
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.