Jeep 2015 Grand Cherokee - Diesel Supplement - Manual (Page 18)

12. Temperature Gauge
The temperature gauge shows engine coolant tempera-
ture. Any reading within the normal range indicates that
the engine cooling system is operating properly.
The gauge pointer will likely indicate a higher tempera-
ture when driving in hot weather, up mountain grades,
or when towing a trailer. It should not be allowed to
exceed the upper limits of the normal operating range.
NOTE:
Temperature readings in the orange range of the
gauge are acceptable under some high load condition.
If the gauge points to the H or ЉEngine Temperature HotЉ
DID message appears a light and a single chime will
require driver correction.
CAUTION!
Driving with a hot engine cooling system could
damage your vehicle. If the temperature gauge reads
“H” pull over and stop the vehicle. Idle the vehicle
with the air conditioner turned off until the pointer
drops back into the normal range. If the pointer
remains on the “H” and you hear continuous chimes,
turn the engine off immediately and call an autho-
rized dealer for service.
16 UNDERSTANDING YOUR INSTRUMENT PANEL