2021 JEEP GRAND CHEROKEE engine

ENGINE COMPARTMENT
3.6L Engine
1 — Remote Jump Start Positive Terminal 6 — Washer Fluid Reservoir
2 — Brake Fluid Reservoir 7 — Engine Oil Filter Access
3 — Engine Oil Dipstick 8 — Engine Coolant Reservoir
4 — Engine Oil Fill 9 — Power Distribution Center (Fuses)
5 — Air Cleaner Filter 10 — Remote Jump Start Negative Terminal
SERVICING AND MAINTENANCE
248

5.7L Engine
1 — Remote Jump Start Positive Terminal 6 — Washer Fluid Reservoir
2 — Brake Fluid Reservoir 7 — Engine Oil Dipstick
3 — Power Distribution Center (Fuses) 8 — Coolant Pressure Cap (Radiator)
4 — Engine Oil Fill 9 — Remote Jump Start Negative Terminal
5 — Air Cleaner Filter
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6.2L Supercharged Engine
1 — Remote Jump Start Positive Terminal
2 — Brake Fluid Reservoir
3 — Power Distribution Center (Fuses)
4 — Intercooler Coolant Reservoir
5 — Engine Oil Dipstick
6 — Engine Oil Fill7 — Air Cleaner Filter
8 — Washer Fluid Reservoir
9 — Coolant Pressure Cap (Radiator)
10 — Engine Coolant Reservoir
11 — Remote Jump Start Negative Terminal
SERVICING AND MAINTENANCE
250

6.4L Engine
1 — Remote Jump Start Positive Terminal 6 — Washer Fluid Reservoir
2 — Brake Fluid Reservoir 7 — Engine Oil Dipstick
3 — Power Distribution Center (Fuses) 8 — Coolant Pressure Cap (Radiator)
4 — Engine Oil Fill 9 — Remote Jump Start Negative Terminal
5 — Air Cleaner Filter
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3.0L Diesel Engine
1 — Remote Jump Start Positive Terminal 6 — Engine Oil Dipstick
2 — Brake Fluid Reservoir 7 — Coolant Pressure Reservoir
3 — Engine Oil Fill 8 — Power Distribution Center (Fuses)
4 — Air Cleaner Filter 9 — Remote Jump Start Negative Terminal
5 — Washer Fluid Reservoir
SERVICING AND MAINTENANCE
252

Checking Oil Level — Gasoline Engine
To assure proper lubrication of your vehicle’s
engine, the engine oil must be maintained at
the correct level. Check the oil level at regular
intervals, such as every fuel stop. The best
time to check the engine oil level is about five
minutes after a fully warmed up engine is
shut off.
Checking the oil while the vehicle is on level
ground will improve the accuracy of the oil
level readings. Always maintain the oil level
within the SAFE zone on the dipstick. Adding
one quart of oil when the reading is at the
bottom of the SAFE zone will result in a
reading at the top of the safe zone on these
engines.
CAUTION!
Overfilling or underfilling the crankcase
will cause aeration or loss of oil pressure.
This could damage your engine.
WARNING!
• Never smoke while working in the engine
compartment: gas and inflammable va-
pors may be present, with the risk of fire.
• Be very careful when working in the
engine compartment when the engine is
hot: you may get burned. Do not get too
close to the radiator cooling fan: the
electric fan may start; danger of injury.
Scarves, ties and other loose clothing
might be pulled by moving parts.
CAUTION!
• Be careful not to confuse the various
types of fluids while topping up: they are
not compatible with each other! Topping
up with an unsuitable fluid could se-
verely damage your car.
• The oil level must never exceed the MAX
mark.
• Always top up using engine oil of the
same specifications as that already in
the engine.
CAUTION!
• If the engine oil is being topped up, wait
for the engine to cool down before loos-
ening the filler cap, particularly for ve-
hicles with aluminium cap (if equipped).
WARNING: risk of burns!
• Overfilling or underfilling the crankcase
will cause aeration or loss of oil pressure.
This could damage your engine.
Checking Oil Level — 3.0 Diesel Engine
To assure proper lubrication of your vehicle's
engine, the engine oil must be maintained at
the correct level. Check the oil level at regular
intervals. The best time to check the oil level
is before starting the engine after it has been
parked overnight. When checking oil after
operating the engine, first ensure the engine
is at full operating temperature, then wait for
five minutes after engine shutdown to check
the oil.
253

Checking the oil while the vehicle is on level
ground will improve the accuracy of the oil
level readings. Add oil only when the level on
the dipstick is below the “MIN” mark. The
total capacity from the MIN mark to the MAX
mark is 1 qt (1 L).
CAUTION!
Overfilling or underfilling the crankcase
will cause oil aeration or loss of oil pres-
sure. This could damage your engine.
NOTE:
It is possible for your oil level to be slightly
higher than a previous check. This would be
due to diesel fuel that may temporarily be in
the crankcase due to operation of the diesel
particulate filter regeneration strategy. This
fuel will evaporate out under normal opera-
tion.
Never operate the engine with oil level below
the “MIN” mark or above the upper “MAX”
mark.
WARNING!
• Never smoke while working in the engine
compartment: gas and inflammable va-
pors may be present, with the risk of fire.
• Be very careful when working in the
engine compartment when the engine is
hot: you may get burned. Do not get too
close to the radiator cooling fan: the
electric fan may start; danger of injury.
Scarves, ties and other loose clothing
might be pulled by moving parts.
CAUTION!
• Be careful not to confuse the various
types of fluids while topping up: they are
not compatible with each other! Topping
up with an unsuitable fluid could se-
verely damage your car.
• The oil level must never exceed the MAX
mark.
• Always top up using engine oil of the
same specifications as that already in
the engine.
CAUTION!
• If the engine oil is being topped up, wait
for the engine to cool down before loos-
ening the filler cap, particularly for ve-
hicles with aluminium cap (if
equipped). WARNING: risk of burns!
• Overfilling or underfilling the crankcase
will cause aeration or loss of oil pres-
sure. This could damage your engine.
Adding Washer Fluid
The instrument cluster display will indicate
when the washer fluid level is low. When the
sensor detects a low fluid level, the wind-
shield will light on the vehicle graphic outline
and the “WASHER FLUID LOW” message
will be displayed.
The fluid reservoir for the windshield washers
and the rear window washer is shared. The
fluid reservoir is located in the engine com-
partment, be sure to check the fluid level at
regular intervals. Fill the reservoir with wind-
shield washer solvent only (not radiator anti-
freeze). When refilling the washer fluid reser-
voir, take some washer fluid and apply it to a
cloth or towel and wipe clean the wiper
SERVICING AND MAINTENANCE
254

WARNING!
should be done by an experienced
technician.
CAUTION!
Do not use chemical flushes in your air
conditioning system as the chemicals can
damage your air conditioning components.
Such damage is not covered by the New
Vehicle Limited Warranty.
Air Conditioning Filter Replacement (A/C Air
Filter)
Refer to “Scheduled Servicing” in this sec-
tion for the proper maintenance intervals.
See an authorized dealer for service.
Windshield Wiper Blades
Clean the rubber edges of the wiper blades
and the windshield periodically with a sponge
or soft cloth and a mild nonabrasive cleaner.
This will remove accumulations of salt or road
film.
Operation of the wipers on dry glass for long
periods may cause deterioration of the wiper
blades. Always use washer fluid when using
the wipers to remove salt or dirt from a dry
windshield.
Avoid using the wiper blades to remove frost
or ice from the windshield. Keep the blade
rubber out of contact with petroleum prod-
ucts such as engine oil, gasoline, etc.
NOTE:
Life expectancy of wiper blades varies de-
pending on geographical area and frequency
of use. Poor performance of blades may be
present with chattering, marks, water lines or
wet spots. If any of these conditions are
present, clean the wiper blades or replace as
necessary.The wiper blades and wiper arms should be
inspected periodically, not just when wiper
performance problems are experienced. This
inspection should include the following
points:
• Wear or uneven edges
• Foreign material
• Hardening or cracking
• Deformation or fatigue
If a wiper blade or wiper arm is damaged,
replace the affected wiper arm or blade with
a new unit. Do not attempt to repair a wiper
arm or blade that is damaged.
Front Wiper Blade Removal/Installation
CAUTION!
Do not allow the wiper arm to spring back
against the glass without the wiper blade
in place or the glass may be damaged.
1. Lift the wiper arm to raise the wiper blade
off of the glass, until the wiper arm is in
the full up position.
SERVICING AND MAINTENANCE
258