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.


definitely annoying
Crashes / Fires:
0 / 0
Injuries / Deaths:
0 / 0
Average Mileage:
43,400 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 Prius transmission problems

transmission problem

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2004 Toyota Prius Owner Comments

problem #2

Apr 202007


  • Automatic transmission
  • 78,800 miles


While driving Prius on major highway in dfw metroplex during evening rush hour the warning light came on, then a couple seconds later, entire dash board information screen and all warning lights flashed. Car engine continued to run, and would not turn off, but no power was available to steering or brakes. This problem occurred at the apex of a bridge. However, was able to coast the car into the median between the merge ramp of the major highway and the interstate. Very dangerous situation if it had occurred before apex of the bridge. )called the dealership, who in turn, called a tow truck. Had to basically play with power button, brake, and gear shift to get it into neutral so the car could be loaded onto the tow truck. Took dealer three days to diagnose the problem. It was blamed on a short in auxiliary battery. However, it seemed to be working okay. This was the third time occurrence such as this happened to this car, as well as a non-functioning driver information screen, that if the car was hot inside then information screen worked, if no, then the screen stated no connection to air conditioning, which occurred since first time the shut down happened. Thought this problem was supposed to be fixed with the software upgrade that they installed after the last occurrence. It appeared that this defect happened every 18,000 miles. Now there is 79,000 miles on the car.

- Forney, TX, USA

problem #1

Apr 012005


  • Automatic transmission
  • 8,000 miles
My Toyota Prius stalled while moving at about 35-40 mph in city traffic in chandler, Arizona. The emergency light came on and the engine quit. I was able to maneuver the car to the side of the road as it coasted, then we pushed it into a parking lot. I had the car towed to tempe Toyota (now power Toyota) and they re-programmed the on-board computer, and I haven't had a problem since.

- Tucson, AZ, USA

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