Cooling System Tips - Automatic Transmission; Refueling The Vehicle - Diesel Engine - Jeep Grand Cherokee 2018 Manual

NOTE:
Under certain conditions the engine fan will run
after the engine is turned off. These conditions
are under high load and high temperature con-
ditions.
Cooling System Tips — Automatic
Transmission
To reduce the potential for engine and transmis-
sion overheating in high ambient temperature
conditions, take the following actions:
• City Driving — When stopped, shift the trans-
mission into NEUTRAL and increase engine
idle speed.
• Highway Driving — Reduce your speed.
• Up Steep Hills — Select a lower transmission
gear.
• Air Conditioning — Turn it off temporarily.
NOTE:
If the coolant temperature is too high the A/C will
automatically turn off.
Do Not Operate The Engine With Low Oil
Pressure
If the low oil pressure warning light turns on
while driving, stop the vehicle and shut down the
engine as soon as possible. A chime will sound
when the light turns on.
NOTE:
Do not operate the vehicle until the cause is
corrected. This light does not show how much oil
is in the engine. The engine oil level must be
checked under the hood.
CAUTION!
If oil pressure falls to less than normal read-
ings, shut the engine off immediately. Failure
to do so could result in immediate and severe
engine damage.
Do Not Operate The Engine With Failed
Parts
All engine failures give some warning before the
parts fail. Be on the alert for changes in perfor-
mance, sounds, and visual evidence that the
engine requires service. Some important clues
are:
• Engine misfiring or vibrating severely.
• Sudden loss of power.
• Unusual engine noises.
• Fuel, oil or coolant leaks.
• Sudden change, outside the normal operating
range, in the engine operating temperature.
• Excessive smoke.
• Oil pressure drop.
REFUELING THE VEHICLE —
DIESEL ENGINE
1. Press the fuel filler door release switch (lo-
cated under the headlamp switch).
Fuel Filler Door Release Switch
2. Open the fuel filler door.
Fuel and Diesel Exhaust Fluid Fill Location
1 — Fuel Fill Location
2 — Diesel Exhaust Fluid Fill Location
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