Do you have a 2003 Ski-Doo ZX model that likes to display the high water temp light? Maybe when it really doesnâ€™t seem that hot? This was a problem with that vintage machine. The water temp warning light should come on at temps above 185 degrees F (85 degrees C).
To remedy the problem, have your dealer add a 68-ohm resistor to the coolant warning lamp circuit, per warranty bulletin 2003-9.