2005 Toyota Sienna: adaptive cruise control problems

Filed Dec 31, 2012 · Acceleration, Driver assistance · 62,050 miles · CA

2005 sienna was driven to a parking garage and parked for two hours. Upon returning to the sienna and starting the engine, three lights came on; check engine, vsc, and trac off. Drove vehicle home (150 miles), the 3 lights remained on as well as loss of cruise control and an intermittent compass display. Took vehicle in for inspection at a local toyota dealer and was told the skid control unit ecu needed to be replaced. I found out there are other complaints and a technical service bulletin on the 2005 sienna vehicle stability control (also called electronic stability control) system that has caused injuries. Even more remarkable, my 2005 sienna has only 62k miles and in that time there has been 2 other incidences with the same symptoms. Why has there not been a recall if there are already injuries in the database??

Filed Feb 24, 2011 · Acceleration, Transmission · 92,000 miles · IA

Our 2005 toyota sienna took off on us in rush hour traffic. Moving my foot to the brake and my husband shifting into neutral was the first thing we tried, we also tried park and reverse, and turning off the cruise control, none of which worked. The toyota sienna death trap continued to accelerate rapidly even though my foot was jammed on the brake (I didn't remove my foot from the brake for another 2 1/2 hrs until the tow truck pulled in front of us. By the way, when your vehicle is suddenly traveling much, much faster than anyone else's vehicle on the road, it's all you can do to not hit someone. Believe me, I was suddenly swerving in and out of the lanes and cutting everyone off. The only thing that stopped our toyota death trap was pulling the key from the ignition, certainly not ideal in rush hour traffic. While this was going on, our son was in the backseat calling 911, while our daughter cried. We don't have a lawyer and toyota won't fix our van. What are we supposed to do with it?

Filed Apr 16, 2010 · Acceleration · 105,000 miles · OK

Tl*the contact owns a 2005 toyota sienna. The contact stated that while driving at approximately 45 MPH with the cruise control activated, the vehicle suddenly accelerated to 55 MPH. The vehicle was taken to an authorized dealership but the dealer could not duplicate the problem. The failure mileage was approximately 105,000. The current mileage was approximately 110,000.

Filed Apr 11, 2010 · Acceleration · 100,000 miles · CA

2005 toyota sienna had cruise control on. The vehicle began to 'shake' and the speedometer climbed to 80 MPH then down to 60 MPH. It didn't seem to actually be accelerating--it felt like the vehicle was fighting to not lose power. I deactivated the cruise control by touching the breaks. I pulled off the freeway, turned the motor off, waited and started again at a slower speed without the cruise control on. After a while the vehicle again began to 'buck and shake', the speedometer raced to 80 MPH (though the car itself) did not seem to have rapid acceleration) then the speedometer dropped to 50 MPH. Over the phone my husband advised I turn on the cruise control and turn it off again. I did and drove about 45 minutes home at speeds from 55-65 without another incident. I will take the car to a dealership tomorrow to check out. The vehicle has approx. 100,000 miles on it.

Filed Apr 9, 2010 · Acceleration · 90,000 miles · IA

Tl* the contact owns a 2005 toyota sienna. The contact stated while utilizing the cruise control at 40 MPH, the vehicle abnormally accelerated without driver intent. The vehicle was towed to an authorized dealer, but the failure could not be duplicated. There were no repairs made to the vehicle. The failure mileage was 90,000. Updated 05/26/10 *bf the consumer stated the only way to stop the vehicle was by pulling the key out of the ignition. Updated 05/28/10.*jb updated 06/29/10.*jb updated 07/08/10.

Filed Mar 1, 2010 · Acceleration · 42,000 miles · CA

While driving from ca to va in may of 2009 I experienced an unintended acceleration while in cruise control. This occurred after I would slow down for traffic and then activate the resume control. This happened on several occasions during the trip east and on the return trip back to ca. The speeds with the unintended acceleration reached 95mph on the first occasion and stopped once I applied the brakes. After the first incident I was able to keep the acceleration from reaching more than 10 to 15 MPH over the assigned cruise control speed.

Filed Feb 23, 2010 · Acceleration, Electrical · 98,000 miles · CA

After I read the article about apple inc. Co-founder steve "woz" wozniak's experience about his 2010 prius, I was relieved somewhat from my own doubt and confusion. I bought a used 2005 sienna xle limited (with radar sensor) last november with 95000 mileage. It accelerated unintentionally several times when I was using cruise control with only single push of the acceleration handle. I once let the car went up to 90 MPH before I braked it off from the cruise control mode. The acceleration was very powerful when it malfunctioned. All happened in several seconds. You could hear the engine revering loudly towards full speed. I had no problem to brake it off every time though. I also believe it is an electronic or software problem since none of my feet was on any pedal when this happened and there was no floor mat issue at all.

Filed Feb 16, 2010 · Acceleration · 20,000 miles · CA

Toyota 2005 sienna limited xle when using cruise control (we only use this on highway while traveling so this occurs at that time. When we take the cruise off and then restart it is accelerates and fortunately we can brake to get it incontrol, for example , if we have the cruise set at 70 and disengage when we reengaged it will automatically accelerate for 90 miles or greater. We took it to our toyota dealer and he said it could be the linkage - we have been told by a mechanic that there is no such thing in the 2005 toyota this is a continuing problem.

Filed Feb 4, 2010 · Acceleration · 2,000 miles · DE

Toyota sienna 2005. Intermittently the car accelerates on its own. Has been happening since I bought it. Never thought much about it, because it would slow down when I put on brakes. In light of the recent problems with other models, I think this is part of the problem. The car feels as if it was on cruise control, getting up to speed. However, I have never used cruise control as I don't like it. Is there a link between the cruise control and these problems?

Filed Jun 12, 2006 · Acceleration · 30 miles · AZ

2005 toyota sienna xle - cruise control will not hold when going downhill. Dealer checked it, contacted toyota tech. Support. They were told this model is not designed for cruise control to hold going downhill! I contacted toyota via e-mail and was told the same thing. I have owned many cars and never have had cruise control not hold on a downhill road. It will be set at 60 and continue going as high as 80 when brakes applied. This is a danger, defect, something is not right with such a design. I am putting in a recent date, but it has occurred since the vehicle was purchased. Number of failures is on-going.

Filed Jul 12, 2005 · Acceleration · 3,200 miles · OH

Dt: the consumer was made aware of the fact that his vehicle has a laser that sends a message to the cruise control to adjust to the vehicle in front of his. When the vehicle in front of the consumer's vehicle moves away the cruise control is supposed to gradually bring the vehicle back up to the original programmed speed. The consumer 's vehicle, however would jerk quickly back up to speed everytime this happened. The movement was hard enough to jerk the passengers backwards. The vehicle was taken to the dealer who indicated that would call toyota to check if there was a recall. They called the consumer back and simply told him that the vehicle was designed to do that.