Engine Coolant Temperature Gage
This gage shows the engine coolant temperature.
If the gage pointer moves into the red area,
your engine coolant might have overheated and
your engine may be too hot. You should pull off the
road, stop your vehicle and turn off the engine
as soon as possible.
See Engine Overheating on page 286. If you have
a Caterpillar
®
diesel engine, also see your
Caterpillar
®
Operation & Maintenance Manual.
Low Coolant Warning Light
You have a low coolant
warning light. If this light
comes on, your system
is low on coolant and the
engine may overheat.
The warning light should come on briefly, as a
check, when you turn on the ignition.
When it comes on, you will also hear a warning
tone at several beats per second for 10 seconds.
See Engine Coolant (Gas and DURAMAX
®
/Isuzu
Engines) on page 282 or Engine Coolant
(Caterpillar
®
Diesel Engines) on page 285 and
have your vehicle serviced as soon as you can.
This light may also come on if your vehicle is
equipped with the automatic engine shutdown
system and engine shutdown has begun.
See Engine Alarm and Automatic Shutdown under
Starting the Diesel Engine on page 98.
United States Canada
171
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