Cruise Control Problems of Toyota Sienna - part 2

Referring to our 2004 Toyota Sienna purchased in Aug, 2004, three times, when using the cruise control and engaging the "resume" function, the vehicle accelerated at full throttle and continued doing so past the set speed until stepping on the brake to disengage the cruise control. This resulted in the speed increasing to 5 to 10 miles over the set speed. This is very dangerous and could result in a crash if another vehicle suddenly pulled out in front of my vehicle.

See all problems of the 2004 Toyota Sienna 🔎.

Laser cruise control sensor lens is road level mounted and a small stone chipped the plastic lens causing system shut down in daylight. System wil not function except in darkness. Repair cost is estimated to be $2000. 00.

Cruise control will not work manually if the laser system is not functioning . Laser system cruise control is broke. You can not turn on the manual cruise control unless you stop the van and turn it off and set the control to noral. The laser was broke from car wash or road haz. Ard.

2004 Toyota Sienna xle limited- uncontrolled cruise control acceleration/deceleration. The problem has continuously occurred since purchase in September 2004. Dealership denies problems. Dynamic cruise controlsystem causes my car to dangerously accelerate and decelerate. When laser detects nearby vehicle, the car will brake abruptly. Likewise, once the nearby car is no longer in laser range, the car will accelerate abruptly to return to the set cruise control speed. I have almost been hit from behind multiple times on freeways because of the abrupt deceleration. I have been caught off guard several times by the acceleration and nearly lost control of the vehicle. The only way to stop the rapid acceleration and deceleration is to press the brake in order to disengage the cruise control system. I have never driven a car with such a dangerous cruise control system. I no longer use my cruise control system because I fear that I'll be unable to disengage the system and lose control of the vehicle.

Radiator ruptured and the engine overheated; hose replaced in steering column recall; rust protective tape recall; dvd screen replaced and the entire dvd player replaced(screen still not easily visible in middle row); passenger seat belt replaced; middle passenger seat belt failing; gasoline smell inside of car with ac on recirculation; driver's window fell inside door in snow storm and was not considered a safety issue to get a loaner vehicle even though the vehicle could not be locked; tires completely bald and leaking under 30,000 miles, dvd player must be at a high db volume and when returned to radio/cd will almost deafen you; interior lights have to be manually over ridden or will drain battery; car hesitates 1-2 seconds when trying to quickly accelerate and then lurches forward alarmingly; cruise control is not functioning; waiting to have fuel mixture sensor replaced. I was not informed of first 2 recalls until I my engine overheated. I did get the rust recall and a sticker on my sliding door informing user of danger of having middle windows open while opening the middle door could catch a head or other extremity. Toyota dealer service manager says mine is the only 04 Sienna experiencing any problems except for the recalls on the radiator; the steering hose; the rust tape; and the middle seat belt. Not so according to all I have read here. Most of the problems have occurred between 22,000 and 34,000 miles; the dvd screen always failed to lock into a good position for the middle row viewers.

I ran into a big problem with my 4 month old 2004 Toyota Sienna xle. I was turning onto a hill and wanted to see how it would accelerate up the hill so I floored it. The car accelerated well and I took my foot off the gas pedal at about 35 mph. The problem was that the car kept going at full acceleration. There was no one in front of me so I started trying to figure out how to stop it instead of just turning off the car (I needed to get to the top of the hill and I could coast to where I was going). I put it into neutral but all it did was rev to 6000 rpm, I checked to make sure I somehow hadn't gotten the cruise control on and I hadn't, I downshifted into 3rd and kept pressing on and letting off the brake pedal since I didn't want ruin my breaks (I was able to keep the speed between 40 and 50). As I neared the top of the hill (it is about 1/3 of a mile long) I figured I would turn the car off at the top. Just as I was about to crest the hill, the van stopped accelerating as the car leveled out and then ran normal. There is an initial level portion going to the top of the hill and the van did not stop accelerating at the level spot. It wasn't until the second level spot that it stopped accelerating. .

The cruise control lever is located in an area that when the driver turned the steering wheel the cruise control is engaged and , resulted in sudden acceleration. The consumer indicated the problem occurred on a consistent basis.

See all problems of the 2001 Toyota Sienna 🔎.

While driving on tollway in our 2000 Sienna with cruise set to 70 mph I pushed the accelerator a little to increase speed a few mph. It instantly took off as if I had hit the "resume" on the cruise control (cc) and had it set for 120 mph. After a few seconds of panic I hit the brakes to slow the van and release the cc. No luck. With no traffic near me I looked to see if the acc. Pedal was stuck, floor mat was interfering, or something else holding the pedal down - nothing was. I turned off the cc, pumped the accelerator pedal, stomped on the brakes and was just about to put van in neutral when we went back to normal control. We took van to Toyota dealer next day, but they could find nothing wrong. They called Toyota and were told it was not a known problem, so no fix. We still drive it daily, but do not use the cc in traffic, or accelerate with the cc on. This was not a stuck pedal, nor a floor mat problem. Because we have not used the cc in the same manner as when the sudden acceleration happened, I would think it is cc related.

See all problems of the 2000 Toyota Sienna 🔎.

Our family purchased a brand new 2004 Toyota Sienna awd and had countless issues with it . The most serious issue was - random unpredictable acceleration responses. We contacted Toyota canada & japan in 2003. There is absolutely 100% no doubt in my mind, or my wife's mind, that the Toyota product line has something wrong electronically in their accelerator pedal or transmission sensors - or the software that interfaces with them. We did not have sticky gas pedals or floor mat issues - we had a vehicle that didn't operate the way we were asking it to. The vehicle never consistently responded to the actual pressure being placed on the accelerator pedal. A light press in parking lot driving would sometimes result in what felt like full throttle acceleration and when trying to turn across traffic at an intersection, or during merging - the vehicle would hesitate and then move the vehicle when it was no longer safe to do so. . Toyota said " they did not consider this behavior a safety issue " it was only " a nuisance problem " . First our dealership ignored the problem. Then they said " my wife didn't teach the vehicle to drive properly - it had a Smart learning transmission you know " . They finally admitted there was a problem after we continued to voice our concern over several near miss incidents with the vehicle . In one incidence , while on the highway using cruise control - the vehicle unexpectedly accelerated full throttle into a corner at over 140 kph forcing us onto the shoulder and almost off the road . It was a nerve shattering experience. Our Toyota dealer finally admitted a similar acceleration problem existed in the camry / corolla lines and that it was transmission software related . After several months of the run around from Toyota with no fix in sight - being told by the owner of the dealership to drive the vehicle in 3rd gear to minimize the surges until a software fix was created - we walked away from the vehicle.

There was a sudden decrease in acceleration while in cruise control, and an unusual noise.

When cruise control is engaged while driving uphill vehicle runs out of control, brake pedal needs to be depressed to stop vehicle.