Seven problems related to other fuel system have been reported for the 2004 Toyota Sienna. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2004 Toyota Sienna based on all problems reported for the 2004 Sienna.
Was driving on highway at 60-65 mph. The car continued to accelerate. Pressed on brake and wasn't slowing the vehicle. The driver was weaving in and out of cars as the van started to creek up to 92 mph. The driver and passengers thought they were going to crash and possible die. The driver tried the brake multiple times and nothing. The driver said the accelerator pedal wasn't pressed all the way down to the floor. It was half way and driver had to go down and pull up on the pedal while driving. The van then started to slow and driver was able to pull over to have the van evaluated . The throttle body was reached and cleaned of carbon because it said that this may have been part of the issue. Never has this van taken off like this. The throttle body cable wasnt loose or disconnected either. So far we havent been able to recreate but 3 people could have been killed.
Unknown.
Drivers side seat belt broke and was replaced. Fuel sensor not replaced causes vehicle to hesitate at times at freeway speed.
While exiting a parking lot, car stalled. Immediately, there was a smell of gas and gas was leaking on the ground. Car would not restart. When we got it repaired, the mechanic said he discovered the "fuel line quick connect" disconnected. He asked if we had any recent work done on the car and I replied no.
I wrote to Toyota sept. 7, 2007, concerning an acceleration problem with my 2004 Sienna minivan, following many visits to the dealer to evaluate and fix it. The throttle response is delayed, in my case; it lags during initial acceleration from a stop, but more importantly, it lags when immediate acceleration is needed for passing, and accelerating after slowing for a turn. The factory rep who responded to my letter said the dealer would reevaluate the problem. The dealer rep drove the van, experienced the same problem, and concluded it was a "quirk" of the car, that could not be fixed unless, perhaps, the computer controlling the throttle was replaced. They would not do that unless a recall was ordered, he said. Needless to say, I thought that was the final word, until other problems began to surface with the "fly by wire" system in Toyotas. I do believe that the electronic throttle, the throttle position feedback circuit, and related sensors are at fault, all of which are controlled by the computer. I also have other cars with electronic throttles, an accord and a town & country, and neither has that problem. No accidents have been caused by this daily malfunction, as I guess I have adapted my driving style to it, but don't you think there is a systemic problem here? the incident date is a continuing date, beginning during the first year of ownership (2004) up to the present time.
I own a 2004 Toyota Sienna. I have had issues with a sluggish accelerator that suddenly "gives". I have taken it to the dealer and independent mechanics and neither have resolved the issue. I have documentation of repairs, cleaning the fuel injectors, removing the carpets, etc. Nothing has worked and am worried why the Sienna has not been included in the recall.
The power sliding door on my 2004 Toyota Sienna van has become inoperable. I have been stranded with a door 'stuck open'. This is clearly a safety issue. Toyota originally quoted over $1400 to repair what is clearly a design flaw given the 100's of other complaints I've seen online.