One problem related to engine stall has been reported for the 2010 Toyota Sienna. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2010 Toyota Sienna based on all problems reported for the 2010 Sienna.
Toyota Sienna 2010 minivan engine stalls while driving. When driving on highway or on city roads, engine stalls and looses engine power for a few seconds (seemingly happens when shifting gears) when accelerated or decelerated. The engine basically stalls during driving and may lead to sudden vehicle slowness in middle of traffic. The suspected problem advised by Toyota is with transmission and the original cost estimate was $5100 to fix that. Later after discussing with Toyota it was lowered to $3800 (approx) and Toyota warranty support was ready to pay (absorb) $2000 and $1800 to be paid by the customer. Even after initial repair and payment of ($1800+tax) $2166 the vehicle still have the same symptoms and issues. Presently the vehicle is under repair with the dealer (fremont Toyota, CA). The vehicle use was normal, regular city/highway usage, well maintained single owner. Nothing heavy was towed and used in rough or abnormal conditions. If possible ntsb needs 1. To look into this model of vehicle and see if there are other reported problems with Sienna 2010 engines. 2. To investigate why this vehicle have this issue within 46,847 miles. 3. Can manufacture bills the entire cost of repair, since this seems a major design or engine issue with this model of vehicle. 4. Advise to issue a safety notice to all Toyota Sienna 2010 v6 engine model owners since this can be disastrous in middle of traffic and can cause accidents/problems to all on the road.