Huge win for car owners! All TSBs to be made public. The Center for Auto Safety just made the NHTSA (US Government) make public the full text of all TSBs from now on. They are the same organization that has petitioned the NHTSA & filed lawsuits to protect car owners over exploding gas tanks & other major safety issues. Whenever you drive in your car, you are safer thanks in part to a lot of work over the years by this small but very effective consumer advocacy group.

Please take a moment & say thank you by donating $5 or whatever you can to the Center for Auto Safety.


really awful
Crashes / Fires:
6 / 0
Injuries / Deaths:
3 / 0
Average Mileage:
14,956 miles

About These NHTSA Complaints:

This data is from the NHTSA — the US gov't agency tasked with vehicle safety. Complaints are spread across multiple & redundant categories, & are not organized by problem.

So how do you find out what problems are occurring? For this NHTSA complaint data, the only way is to read through the comments below. Any duplicates or errors? It's not us.

2004 Toyota Sienna brakes problems

brakes problem

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2004 Toyota Sienna Owner Comments

problem #9

Jul 302007

Sienna 6-cyl

  • Automatic transmission
  • 25,000 miles


Our family is deeply troubled and worried about the safeness of our 2004 Toyota Sienna le-8 every time we use it on the road. Our van has been having intermittent vsc, kicking which started early this year. First, it will hesitate to accelerate followed by vsc kicking then automatic braking engages then sudden pull of the steering to the left. The vsc keeps flashing and beeps continuously unless I slow down to around 20mph. I even showed the dealer copies of Sienna owners complaints with similar problem and tsbs regarding yaw rate sensor and steering column sensor. But still could not fix or duplicate the problem. Nothing was done to correct the problem and no parts replaced or repaired.

- Plainfield , IL, USA

problem #8

Mar 072007

Sienna 6-cyl

  • Automatic transmission
  • 30,600 miles
- the contact stated that while driving the 2004 Toyota Sienna (with 30600 failure mileage at 30 mph the contact's vehicle struck a second vehicle, T-boned, on the passenger's side, pushing the other vehicle out of the way and continuing down the street. The vehicle picked up speed going down a hill. The contact applied the brakes and tried to down shift, but nothing seemed to decrease the velocity. The vehicle hit a street sign, jumped a curve, and the contact purposely crashed into a clump of guide wires in order to stop the vehicle. The contact pushed on the emergency brake and it did not engage. The contact noticed after the crash that the vehicle had lost power. The vehicle sustained extensive damage.

- W. Hartford, CT, USA

problem #7

Apr 012006


  • Automatic transmission
  • 42,056 miles
: the contact stated intermittently while applying brake pressure, the pedal will go to the floor. In addition, the vehicle accelerated without warning causing an accident. One person sustained minor injuries and there was a crash and property damage. The vehicle was taken to the dealer where the problem could not be duplicated and the contact was informed that the vehicle is functioning normally.

- Bealeton, VA, USA

problem #6

Dec 162004

Sienna 6-cyl

  • Automatic transmission
  • 7,500 miles


Wife was in school parking lot attempting to park, traveling less than 10 mph, applied brakes, and brake pedal went to floor/with no brake action. Vehicle hopped a curb and struck wrought iron fence. Consumer placed vehicle in reverse and got it off curb, then into park. Visible damage to front bumper & license plate, possible damage to undercarriage. Iron fence was twisted/ bent and disconnected from gated entrance. Contacted dealership and tow truck was dispatched. Tow truck driver scott"from la costa towing noted that the brake pedal was soft, and went to the floor when he started the vehicle. Traveled to dealership in second car, assistant service manager steve adams commented that because we alleged a manufacturing defect vehicle should not have been towed to their location because it might be an admission of liability. Vehicle was retained at Toyota carlsbad lot. Consumer was advised to contact Toyota customer service tomorrow morning to schedule an engineer to examine the vehicle and determine whether or not there was a manufacturing defect. To date, no work had been done on the vehicle. Consumer did not know exactly what caused the failure or what was necessary to correct it. Consumer purchased the vehicle new in February 2004, and it had aproximately 7500 miles.

- Oceanside, CA, USA

problem #5

Nov 152004

Sienna 6-cyl

  • 3,000 miles
My wife was attempting to backup up when she put the van in reverse it did not move. She took her foot of the gas the van started rolling backwards. When she applied the brakes the pedal went to the floor and would not stop. She then rolled backwards down a 75-80 degree bank for about 75-100 yards. Along she was kept pumping the brakes but they continued to failed. At the end of her trip the van slammed backwards into a tree, causing injury, and big damage to the van. This really did happen ! after all this is to strange to be madeup.

- Knoxville, TN, USA

problem #4

Nov 152004

Sienna 6-cyl

  • Automatic transmission
  • 3,000 miles
My wife was trying to backup, when she put the van in gear and pushed the gas, nothing happened. She let her foot of the gas and the 2005 van starting rolling. She then applied the brakes, but they did not work, the brakes went completely to the floor. She then rolled down a very steep backwards and hit a tree, this is a big problem< toyoda better do something befroe someone dies. But my guess is that someone already has.

- Powell, TN, USA

problem #3

Jul 122004


  • Automatic transmission
  • 3,400 miles


Vehicle experienced brake failure when depressed at 15 mph. Consumer's vehicle stopped when it rear ended another vehicle. Dealership performed a diagnostic test in which no failure was detected.

- Newport Beach, CA, USA

problem #2

Feb 272004


  • Automatic transmission
  • 50 miles
While driving ay any speed and applying the brakes consumer heard a noise, it sounded like it was coming through the gas tank. Dealer indicated nothing was wrong with the vehicle.

- Locust Grove, VA, USA

problem #1

Feb 102004

Sienna 6-cyl

  • Automatic transmission
  • 20,000 miles
While pulling out of the parking lot attempting to accelerate, a severe vibration and or pounding occurred in the front end. It was determined that the computer actuation of the pulsating brakes to counteract false perception of skidding. (the driver did not apply the brake pedal during the event)

- Marietta, OH, USA

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