definitely annoying
Crashes / Fires:
0 / 0
Injuries / Deaths:
0 / 0
Average Mileage:
24,024 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

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2004 Toyota Prius Owner Comments (Page 3 of 3)

« Read the previous 20 complaints

problem #5

Apr 012005


  • miles


Master indicator light illuninated, internal combustion engine failed to restart.

- Morton Grove, IL, USA

problem #4

Sep 302004

Prius 4-cyl

  • Automatic transmission
  • miles
The consumer owns a 2004 Toyota Prius. He says that he is having problems with the vehicle because it will shut off while in traffic. Also the park mechanism will disengaged and the lock button does not unlock the doors as specified in the owners manual. Also the start button does not consistently start the vehicle properly. The vehicle experienced: Inoperative brake light, the fuel door spring was replaced, dome light remained on, engine would disengage, lights would remain lit after the vehicle was started, vehicle would not move until the vehicle was shut off and restarted to get the brake light to go out, rattling as if it were going to stall, the alarm sounded on one occasion when the door was opened, fuel door spring malfunctioned and fuel door would not open. The technicians were unable to verify the door lock malfunction. The consumer would like the vehicle replaced with a 2005 model equipped as detailed on the original invoice including aftermarket items paid for.

- Baltimore, MD, USA

problem #3

May 072005

Prius 4-cyl

  • Automatic transmission
  • 9,207 miles
Problem began 5/7/05. While driving, the vehicle suddenly stopped. The indicator said to contact dealership. The vehicle was towed to the dealership. The dealer reset the computer and the vehicle was repaired.

- Berkley, CA, USA

problem #2

Oct 292004


  • Automatic transmission
  • 4,008 miles
While driving the vehicle at 60 mph. The vehicle completely shut down. The consumer pressed on the accelerator pedal for speed, however the vehicle continued to lose power. The consumer had the vehicle towed. The vehicle is still at the dealership. The problem was due to a computer glitch per tsb. The battery had gone dead.

- Pasadena, MD, USA

problem #1

Jun 162004


  • miles
While driving vehicle stalled. Consumer restarted the vehicle, and pulled over. Consumer noticed all warning light appeared on the dashboard and remained on. Consumer had the vehicle towed to the dealer for inspection, and mechanic could not duplicate the problem, but insisted that warning light should be turned off.

- Los Altos, CA, USA

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