2003 Toyota Prius electrical system problems
13 owner complaints filed with NHTSA name the electrical system on the 2003 Toyota Prius — 13% of all complaints for this model year.
What owners report
“For no apparent reason when driving, the emergency brake will engage, without pressing the e brake pedal. Also, intermittent once car is parked and doors locked, alarm will just start going off for nonreason.”
filed Jul 10, 2020
“There is no thermostat gauge in a 2003 toyota prius , the car over heats and you don't know until your in the middle of traffic nearly getting killed. Toyota was contacted, but say not a recall and they don't honestly car cause car is old . That's not right , anything you still use from cars or…”
filed Jul 31, 2017
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Electrical System problems in other Prius years
| Year | Reports | Share |
|---|---|---|
| 2024 Prius | 3 | 14% |
| 2022 Prius | 6 | 25% |
| 2019 Prius | 4 | 14% |
| 2018 Prius | 2 | 6% |
| 2017 Prius | 11 | 12% |
| 2016 Prius | 20 | 13% |
| 2015 Prius | 27 | 17% |
| 2014 Prius | 33 | 16% |
| 2013 Prius | 50 | 12% |
| 2012 Prius | 52 | 12% |
| 2011 Prius | 68 | 13% |
| 2010 Prius | 192 | 7% |
Other reported problem areas on the 2003 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.