2009 Toyota Prius engine problems
19 owner complaints filed with NHTSA name the engine on the 2009 Toyota Prius — 4% of all complaints for this model year.
What owners report
“The engine light went on while driving on the highway. We immediately pulled over and had the vehicle towed to the nearest dealership. The dealership informed us that both the Brake Actuator (Toyota part TO44500-47141) and water pump (Toyota par TOG9020-47031) had failed. The car was no longer save…”
filed Oct 9, 2024
“My 2009 Toyota Prius abruptly lost power while driving. The electrical system turned off and the vehicle stalled while going 50 mph on a 2-lane parkway. While I was able to put my hazard lights on and steer the vehicle, I had no other control and was at a high risk of a crash. There's no emergency…”
filed Jun 15, 2021
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Related service bulletins
This bulletin includes basic procedures for performing a rescue charge on Ni-MH high voltage (HV) batteries. This bulletin should be used in conjunction with the applicable model and model year Repair Manual while…
T-SB-0009-26 · Service Bulletin/Repair Instructions · issued Feb 13, 2026OBSOLETE NOTICE February 13, 2026: This bulletin is now obsolete. Please see T-SB-0009-26.
T-SB-0119-15 Rev2 · Service Bulletin/Repair Instructions · issued Feb 13, 2026
Engine problems in other Prius years
| Year | Reports | Share |
|---|---|---|
| 2022 Prius | 2 | 8% |
| 2019 Prius | 5 | 17% |
| 2018 Prius | 2 | 6% |
| 2017 Prius | 12 | 13% |
| 2016 Prius | 17 | 11% |
| 2015 Prius | 8 | 5% |
| 2014 Prius | 17 | 8% |
| 2013 Prius | 37 | 9% |
| 2012 Prius | 31 | 7% |
| 2011 Prius | 46 | 9% |
| 2010 Prius | 140 | 5% |
| 2008 Prius | 49 | 3% |
Other reported problem areas on the 2009 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.