Even the passengers feel it. Have to press the accelerator harder to force a hard downshift. When I realized that the vehicle was not going to turn I floored the accelerator to get out of its way. This will be my last Toyota. All four tire were replaced. We only sell parts from trusted brands like so that you can find quality parts you can count on. Repeated trips to dealership bring no satisfaction: response from dealer is that vehicle is operating within standards.
The transmission is completely wrecked and needs to be replaced. The van will jump into a gear like if someone had popped the clutch on a manual transmission. At a large price tag initially this is not fair to the consumer. The Sienna seemed to slow down violently as all passengers in my Sienna lurched forward, and then the transmission finally seemed to kick in after what seemed like a couple of seconds of sitting helplessly in the path of the oncoming vehicle, which had to slam on its brakes to avoid colliding with us. The child also used the steering wheel during the event which should not be possible. The vehicle was taken to an authorized dealer, where the technicians stated that the transmission fluid needed to be flushed and recalibrated.
I wanted to submit this in case others are experiencing similar issues. This acceleration hesitation could have been much more dangerous if the other driver had not been driving defensively. No accident, fortunately, but a couple of close calls. Especially since all of the other things that has happen with their cars lately. The approximate failure mileage was 60,000. Or you may just be struggling to keep it highway-approved. Toyota needs to have some pressure put on them.
The dealership told me I needed a flash to the computer that would give the car a shift enhancement. The contact stated that while driving approximately 25 mph, the vehicle would not accelerate further. I couldn't find any recommendation in Toyota's Owner's Manual regarding transmission fluid. Yet somehow, the van's transmission was taken out of park and put into gear. This is very dangerous when a predictable acceleration is needed.
Trust Toyota to come up with nothing about service intervals and replacement procedures and you got it. The vehicle was not repaired. Vehicle 'surges' at times when brake is depressed. Just as I was beginning my turn a car appeared and I had to step hard on the accelerator. What I have to offer is from other manufacturers and my personal experience. He was the only person in the van at the time, the van was not running, there were no keys in the ignition.
I suddenly and intermittently lost power steering. Very noticeable when you take your foot off of the gas for a moment, like turning into a street or driveway. I have taken it the dealer several times and they always say there nothing wrong. Some dealers are recommending that I do full automatic transmission fluid flush because it ensures 100% fluid will be exchanged. The car did not respond as quickly as it should have, but I did manage to make it across. I drove immediately to a t dealer, and they diagnosed a failed u joint and replaced it today.
I thought I was the only one having this problem until just now; after reading about how many other have the same issue. This would drain out more than the 20 % of the fluid in the trans. This then causes the traction control system to engage. A shorter replacement interval such as 15 k miles is what I would recommend. When I turned the wheel, I could not predict how the car would respond. The vehicle was taken to the dealer a second time and the technicians stated that the transmission needed to be replaced.
They agree it is not right but tell me there is nothing I can do about it?? When I took the vehicle back to the dealer they told me the transmission was bad and show me the dirt from the transmission. Manual Description Cylinder V type 4 cycle, gasoline, Research Octane Number 91 higher, use of premium unleaded gasoline with, an Octane Rating of 91 Research Octane Number 96 higher recommended. The major concern is long term and if my transmission goes bad 3-5-7-10 years from now, how much of this is actually Toyota's fault from poor design but then I have to incur the cost. I was stuck repeatedly and in many dangerous conditions in the mountains in an attempt to get to a ski area due to this problem. The gear shift slid without resistance into reverse and the transmission shifted to reverse and started trying to go backwards. I checked through my online repair manuals and could not find details about the service interval and procedures.
A couple of days later the check engine light came on. After dropping the oil pan, loosen the valve body bolts slightly, sufficient for fluids to drain out of valve body and clutches would enable 80 % of fluids to be replaced. Tires may spin out too when the jerky acceleration occurs. We have 140 reviews on our Automatic Transmission Fluid products for the 2004 Toyota Sienna from previous customers. The maintenance was performed by midas or Toyota.
But, the other dealers are against it since it will exchange only 20% of the fluid. The resaon is as you have stated and the recommended procedure is to drain and refill. Hi scejang, Thank you for the donation. Dealer has been notified many times and they tell me this is a characteristic with the new fly wheel design in the Toyotas. When accelerating from a coast the van hesitates.