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.

10.0

really awful
Crashes / Fires:
10 / 0
Injuries / Deaths:
9 / 0
Average Mileage:
44,925 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 engine problems

engine problem

Find something helpful? Spread the word.
Get notified about new defects, investigations, recalls & lawsuits for the 2004 Toyota Prius:

Unsubscribe any time. We don't sell/share your email.

2004 Toyota Prius Owner Comments (Page 3 of 3)

« Read the previous 20 complaints

problem #5

Aug 022005

Prius 4-cyl

  • Automatic transmission
  • 17,000 miles

A D V E R T I S E M E N T S

While driving 50 mph vehicle lost power/died. Consumer took vehicle to dealer who replaced the electronic throttle body.

- Santa Fe, NM, USA

problem #4

Jul 222005

Prius 4-cyl

  • Automatic transmission
  • miles
Contact stated the engine stalled/lost power on two different occasions.

- St Louis, MO, USA

problem #3

Jun 162005

Prius

  • Automatic transmission
  • 18,750 miles
A. how long and at what speed was the consumer driving before the vehicle lost power" 4 minutes, 50 mph. B. has the consumer accelerated, decelerated or drove at a steady pace when the vehicle lost power? steady pace. C. after the vehicle lost power was the driver able to continue driving the vehicle? if so, how long and at what speed. It stalled out. D. did any warning lights appear before and/or after the incident occurred? if so, describe the lights that were lit. As it happened a hazard icon and an engine check light came on. E. did the vehicle eventually stall and come to a stop? how long did this occur after the warning lights were lit? yes, 30 seconds. F. was the driver able to restart the vehicle right after it stalled" if so, how long did it took, 3-4 times or 2-3 minutes)" took a couple of times, but it started within a minutes. G. was driver able to restart the vehicle after letting it sit awhile? yes. H. was the vehicle towed? no. I. what was wrong with the vehicle" it required an update of a computer program. J did the dealer reprogram the electronic control unit (ECU) or any software" yes. K. vehicle had special service campaigns 40A or 40D performed prior to the incident? when consumer called Toyota she was told vehicle was up to date on all services. L. had vehicle any problems since the repair" no. Consumer had a problem six months ago where it stalled..

- Southlake, TX, USA

problem #2

Mar 222005

Prius 4-cyl

  • Automatic transmission
  • 9,000 miles
.how long and at what speed was the consumer driving before the vehicle lost power" had driven about 10 minutes on commuting home was driving at least 50-60 mph. B.was the consumer accelerating, decelerating, or driving at a steady- state when the vehicle lost power?driving at a steady state. C. vehicle lost power, was the driver able to continue driving the vehicle? if so, how long and at what speed?not able to continue driving, could not restart vehicle. Did any warning lights appear before and/or after the incident occurred? an odd beep and then some symbols illuminated on control panel but can't remember what symbol, thinks it make have been a car with an X through it. Referred to owners manual. Called for help.. came to a complete stop just seconds after the beep and warning lights. F was unable to restart vehicle. G. no restart whatsoever. H. was the vehicle towed? yes to a dealer. I.what did the dealer say was wrong with the vehicle" diagnosis code did not have available, but was aware of service bulletin pertaining to this issue. Questioned why there had not been a recall. J. did the dealer reprogram the ECU (electronic control unit) or any software" yes-the ECU. K.did have recall on navigation software update prior to this episode. L. has the vehicle had any problems since the repair" no but fearful it may happen again.

- Orinda, CA, USA

problem #1

Jun 082005

Prius 4-cyl

  • Automatic transmission
  • miles
Contact has a 2004 Toyota Prius, and while driving the vehicle it has failed on two separate occasions. A. how long and at what speed was the consumer driving before the vehicle lost power" approximately 15 -20 minutes, going about 45 mph. B. was the consumer accelerating, decelerating, or driving at a steady- state when the vehicle lost power? driving at a steady rate. C. after the vehicle lost power, was the driver able to continue driving the vehicle? if so, how long and at what speed? the vehicle was stopped and pulled off the road. D. did any warning lights appear before and/or after the incident occurred? yes, if so, describe the lights that were lit. Check engine light. E. did the vehicle eventually stall and come to a stop? how long did this occur after the warning lights were lit? one part of the vehicle was operating but the driver could not accelerate. F. was the driver able to restart the vehicle right after it stalled? if so, how long did it take (# of attempts and/ or time " ex: 3-4 times or 2-3 minutes)? yes, the engine light kept coming back on. 1 time, right after the vehicle stalled.

- Jacksonville, FL, USA

Not what you are looking for?