Automatic Transmission problems of the 2007 Toyota Sienna

The transmission was doing what felt like "neutral drops" at low speeds, where I would shift into drive, get the "clunk" that I normally associate with the transmission dropping into first, then depress the gas slightly to start moving. The problem is that the engine would rev suddenly, and then catch first, which as you know, causes a sudden lurch of the entire vehicle since the engine had been revving just before it caught. It would also occasionally just "lose" the gear while driving at low speeds. On 6/12/2010 the transmission went out on me while I was driving home (with my family) on the fwy (north 5) from legoland. I have to across 5 lanes to get to the shoulder. I got the van brand new on 3/28/2007 (w/only3 miles on the van) from carson Toyota, CA. . . I paid $28000 w/package3 (out the door price). . . As of 6/12/2010 the van has under 14,000miles. The Toyota dealer replaced the transmission with no charge (still under powertrain warranty). Transmissions aren't supposed to go out that quickly, it definitely seems to be a quality control issue. Under 14,000 miles there has been no service due so it's not a matter of missing scheduled maintenance. This is obviously a very valid safety concern.

My 2007 Toyota Sienna accelerate on turns or when trying to stop.

Purchase a 2007 Toyota Sienna minivan in December 2007 with almost 20,000 mile in it. After purchase notice that when engine is cold it sounds like a diesel engine until it warms up. Also notice what feels like a slip in the transmission in lower gear. This happens if following behind someone and they turn u need to slow down. When u accelerate to get back up to speed there is a delay or a slip before transmission engages, complained with the local dealer (andy mohr Toyota) where purchase from. We have complained since day one of ownership. Toyota dealership states that the vehicle has a memory transmission and learns your driving habits. Well me and my wife don't drive the same and neither does anyone else. No people drive the same and why would someone make a vehicle like this. They also stated that there is no fix at this time. Just trying to blow me off. As for the engine slap when cold they told me it was the exhaust heating up. Now I am no mechanic but let me tell you that is not an exhaust clapping up while heating. Called Toyota USA and file a complaint after a year being pissed at what we spent and how unhappy we were. They set up a third party arbitration and a person from Toyota. We met at the dealership and I voiced my concerns. We even went on a test drive so I could show them what it did. What a joke that was. The person from Toyota explained to me the vehicle was doing exactly what it should be doing. ( the delay in the transmission to me seems to be another Toyota problem that they don't want to acknowledge and im just crazy. ) I have never owned a vehicle that did this. I guess we will need for some people to get rearended and killed before something is done about it. Nothing came out of it and now we are stuck with this expensive van that's a heap. Purchased Toyota for there reputation and what a joke. Never again will I do this. I will sure research before I purchase my next vehicle. Toyota's a joke don't buy!!.

2007 Sienna, hesitates after re-accelerating between 5 to 10 mph. Acceleration pressed but car does not move for 1 or 2 second. Took to dealer 3 time and also talked to Toyota hq (dealer did find problem but hq said not to put anything in report saying there is a problem) they just saying nothing can be done to car right now a. K. A no updates available also automatic transmission has lot of jerks when it switches gears. . . Example: half stop at stop sign and it accelerates without depressing the pedal and rpm going up but car not moving until half way down to intersection.

Engine/transmission hesitation/non-responsiveness. This is particularly apparent when you lift off the throttle to go over a bump or turn. When you press the throttle after that, the throttle does not respond quickly like any of my other vehicles. This happens all the time.

On August 11, 2007, my family experienced a head on collision. We were driving a 2007 Toyota Sienna. My husband was driving and died at the scene. The investigation never found any reason for the cause of the accident. My husband crossed the center line while going round a slight curve. He was 47, poor weather was not issue. If the accelerator on the Sienna malfunctioned and did not respond, that could definitely have been a factor. Our van had less than 3000 miles on it. We purchased in may 11, 2007. The autopsy for my husband came back negative for any medical condition concern. Please investigate our accident report and be sure the safety and reliability of Sienna's is sound. Updated 03/10/10 updated ivoq 08/24/10.