2019 Toyota Prius Engine cooling Problems
- Complaints
- 1about this part
- Share
- 3%of 30 total for the year
- Median mileage
- 95,000miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 1 complaints about the engine cooling of the 2019 Toyota Prius, 3% of the 30 complaints for this model year. Where a mileage was given, the median is 95,000 miles.
Fewer than 15 complaints name this part, so treat the figures as a rough indication only.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“The contact owns a 2019 Toyota Prius. The contact stated there was a coolant leak and the coolant level was low. There was no indication of coolant on the ground. The check engine and engine HOT warning lights were illuminated. The contact stated that the failure was related to TSB: 0135-19. The vehicle was taken to the local dealer where it was diagnosed that there was a coolant leak in the front exhaust pipe heat exchanger. The parts to repair the vehicle were on backorder. The vehicle was not repaired. The manufacturer was not contacted. The failure mileage was approximately 95,000.”
NHTSA complaint #11667430, filed 2025-06, 95,000 milesRelated service bulletins
- 10253223Mar 4, 2024This is to advise of various price adjustments that will affect Toyota Genuine Motor Oil and Long Life Coolant, effective March 1, 2024. These products are ordered through the…
- 10183281Oct 21, 2020TT: HVAC drain tube is found to be blocked/clogged.
- 10179791Aug 31, 2020TT: Any HVAC repair requiring reassembly of the quick connect fitting between the suction hose sub-assembly and the suction pipe sub-assembly located at the top right of the…
- 10179698Aug 5, 2020TSB: Some 2003 ? 2020 model year Prius, Prius C, Prius V; 2006 ? 2019 model year Highlander Hybrid Vehicle; 2007 ? 2020 Camry Hybrid Vehicle; 2013 ? 2020 model year Avalon Hybrid…
- 10179602Aug 5, 2020TSB: Some 2003 ? 2020 model year Prius, Prius C, Prius V; 2006 ? 2019 model year Highlander Hybrid Vehicle; 2007 ? 2020 Camry Hybrid Vehicle; 2013 ? 2020 model year Avalon Hybrid…
- 10178524Jul 30, 2020TT: HVAC drain tube is found to be blocked/clogged.
- 10166037Sep 26, 2019TSB: Some 2016 ? 2019 model year Prius and 2017 ? 2019 model year Prius Prime vehicles may exhibit one or more of the following conditions due to a coolant leakage at the front…
Engine cooling: other model years
| Year | Complaints | Share of year |
|---|---|---|
| 2022 | 1 | 4% |
| 2019 | 1 | 3% |
| 2018 | 3 | 8% |
| 2017 | 1 | 1% |
| 2016 | 1 | 1% |
| 2012 | 1 | 0% |
| 2011 | 5 | 1% |
| 2010 | 33 | 1% |
| 2009 | 7 | 1% |
| 2008 | 16 | 1% |
| 2007 | 17 | 1% |
| 2006 | 20 | 1% |
| 2005 | 64 | 6% |
| 2004 | 89 | 15% |
| 2003 | 11 | 11% |
| 2002 | 11 | 7% |
| 2001 | 18 | 11% |
Other parts of the 2019 Toyota Prius
11 complaintsOther or unknown
8 complaintsEngine
6 complaintsAir bags
4 complaintsElectrical system
4 complaintsForward collision avoidance
4 complaintsVehicle speed control
4 complaintsTires
2 complaintsTransmission and drivetrain
2 complaintsBack-over prevention (rear camera)
1 complaintsElectronic stability control
1 complaintsFuel system
1 complaints
← All problems reported for the 2019 Toyota Prius
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 28, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.
To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology