2003 Toyota Highlander engine and engine cooling problems
46 owner complaints filed with NHTSA name the engine and engine cooling on the 2003 Toyota Highlander — 18% of all complaints for this model year.
What owners report
“2003 toyota highlander (4 cyl. Engine) developed a coolant leak. Vehicle was taken to dealership who advised the water pump was leaking. Water pump was replaced at a cost of $600. Vehicle was driven home and immediately found to still have a coolant leak. Dealership was contacted and owner advised…”
filed Apr 30, 2012
“There are two speeds associated with this. It was on the freeway driving back home when the check engine light came on at about 65 mph. Later, after exiting the freeway and driving for about 10 minutes, the radiator hose blew off from the pressure, shooting coolant and contents of the radiator back…”
filed Apr 26, 2012
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Engine and Engine Cooling problems in other Highlander years
| Year | Reports | Share |
|---|---|---|
| 2019 Highlander | 3 | 1% |
| 2017 Highlander | 3 | 1% |
| 2016 Highlander | 1 | 1% |
| 2015 Highlander | 2 | 1% |
| 2013 Highlander | 3 | 1% |
| 2012 Highlander | 2 | 1% |
| 2011 Highlander | 5 | 3% |
| 2010 Highlander | 2 | 1% |
| 2009 Highlander | 5 | 4% |
| 2008 Highlander | 18 | 4% |
| 2007 Highlander | 2 | 2% |
| 2006 Highlander | 21 | 8% |
Other reported problem areas on the 2003 Toyota Highlander
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.