2004 Toyota Prius engine and engine cooling problems
89 owner complaints filed with NHTSA name the engine and engine cooling on the 2004 Toyota Prius — 15% of all complaints for this model year.
What owners report
“I was driving on the freeway at about 63 miles per hour, I had been driving for about 20 minutes when my engine cut out, all the lights on my dash turned on including the check engine and red triangle warning light. I drifted to the shoulder and powered the car off. I tried to start it 2 more…”
filed Mar 9, 2011
“Driving home at night on the 405 freeway at approx. 65mph, suddenly all the dash warning lights illuminated, including the mil symbol, along with a warning symbol on the navigation screen. I pulled off the freeway and parked at the curb. After checking the owners manual, I slowly drove the rest of…”
filed May 26, 2010
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Engine and Engine Cooling problems in other Prius years
| Year | Reports | Share |
|---|---|---|
| 2022 Prius | 1 | 4% |
| 2019 Prius | 1 | 3% |
| 2018 Prius | 2 | 6% |
| 2017 Prius | 1 | 1% |
| 2016 Prius | 1 | 1% |
| 2012 Prius | 1 | 0% |
| 2011 Prius | 5 | 1% |
| 2010 Prius | 33 | 1% |
| 2009 Prius | 7 | 1% |
| 2008 Prius | 16 | 1% |
| 2007 Prius | 17 | 1% |
| 2006 Prius | 20 | 1% |
Other reported problem areas on the 2004 Toyota Prius
Counts are unique NHTSA complaints naming this component group. Complaints are unverified owner reports; mileage is computed only from complaints that included a usable odometer reading.