Cadillac 2005 STS - Manual (Page 195)

Engine Coolant Temperature
Warning Light
The engine coolant
temperature warning light
will come on when the
engine is very hot.
This light will also come on briefly when the vehicle
is started.
If the light does not go out or comes on and stays on
while driving, there may be a problem with the cooling
system. Driving with engine coolant temperature light on
could cause your vehicle to overheat, see Overheated
Engine Protection Operating Mode on page 5-28.
See Engine Overheating on page 5-26 and DIC
Warnings and Messages on page 3-74 for
more information.
Engine Coolant Temperature Gage
This gage shows
the engine coolant
temperature.
It can be used to see when your engine has warmed up
and to make sure your cooling system is operating
properly. If the gage pointer moves into the shaded area,
the engine coolant is too hot and the engine coolant
temperature warning light will come on. See Engine
Overheating on page 5-26 for more information.
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