2020 JEEP GRAND CHEROKEE cooling

3. Disconnect the positive(+)end of the
jumper cable from the positive(+)post of
the booster battery.
4. Disconnect the opposite end of the posi-
tive(+)jumper cable from the remote
positive(+)post of the discharged
vehicle.
5. Reinstall the protective cover over the
remote positive(+)post of the discharged
vehicle.
If frequent jump starting is required to start
your vehicle you should have the battery and
charging system tested at an authorized
dealer.
CAUTION!
Accessories plugged into the vehicle
power outlets draw power from the vehi-
cle’s battery, even when not in use (i.e.,
cellular devices, etc.). Eventually, if
plugged in long enough without engine
operation, the vehicle’s battery will dis-
charge sufficiently to degrade battery life
and/or prevent the engine from starting.
REFUELING IN EMERGENCY
The funnel for the Cap-Less Fuel System is
located in the spare tire storage area. If your
vehicle is out of fuel and an auxiliary fuel can
is needed, insert the funnel into the filler
neck and proceed to fill the vehicle.
For more information on the Cap-Less Fuel
System refer to “Refueling The Vehicle” in
“Starting And Operating”.
IF YOUR ENGINE
OVERHEATS
In any of the following situations, you can
reduce the potential for overheating by taking
the appropriate action.
• On the highways — slow down.
• In city traffic — while stopped, place the
transmission in NEUTRAL, but do not in-
crease the engine idle speed while prevent-
ing vehicle motion with the brakes.NOTE:
There are steps that you can take to slow
down an impending overheat condition:
• If your air conditioner (A/C) is on, turn it off.
The A/C system adds heat to the engine
cooling system and turning the A/C off can
help remove this heat.
• You can also turn the temperature control
to maximum heat, the mode control to floor
and the blower control to high. This allows
the heater core to act as a supplement to
the radiator and aids in removing heat from
the engine cooling system.WARNING!
You or others can be badly burned by hot
engine coolant (antifreeze) or steam from
your radiator. If you see or hear steam
coming from under the hood, do not open
the hood until the radiator has had time to
cool. Never try to open a cooling system
pressure cap when the radiator or coolant
bottle is hot.
IN CASE OF EMERGENCY
228

CAUTION!
Driving with a hot cooling system could
damage your vehicle. If the temperature
gauge reads HOT (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 HOT (H), and you hear
continuous chimes, turn the engine off
immediately and call for service.
MANUAL PARK RELEASE
WARNING!
Always secure your vehicle by fully apply-
ing the parking brake before activating the
Manual Park Release. In addition, you
should be seated in the driver’s seat with
your foot firmly on the brake pedal when
activating the Manual Park Release. Acti-
vating the Manual Park Release will allow
your vehicle to roll away if it is not secured
by the parking brake, or by proper connec-
tion to a tow vehicle. Activating the
WARNING!
Manual Park Release on an unsecured
vehicle could lead to serious injury or
death for those in or around the vehicle.
In order to move the vehicle in cases where
the transmission will not shift out of PARK
(such as a dead battery), a Manual Park
Release is available.
Follow these steps to use the Manual Park
Release:
1. Firmly apply the parking brake.
2. Open the center console and locate the
Manual Park Release cover, remove it by
snapping the cover away from the console
hinges.3. Press and maintain firm pressure on the
brake pedal.
4. Using a screwdriver or similar tool, push
the metal latch in towards the tether
strap.
5. While the metal latch is in the open posi-
tion, pull upward on the tether strap until
the lever clicks and latches in the released
position. The transmission is now out of
PARK and the vehicle can be moved.
Manual Park Release Cover Removed
229

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

Cooling System
WARNING!
• You or others can be badly burned by hot
engine coolant (antifreeze) or steam
from your radiator. If you see or hear
steam coming from under the hood, do
not open the hood until the radiator has
had time to cool. Never open a cooling
system pressure cap when the radiator
or coolant bottle is hot.
• Keep hands, tools, clothing, and jewelry
away from the radiator cooling fan when
the hood is raised. The fan starts auto-
matically and may start at any time,
whether the engine is running or not.
• When working near the radiator cooling
fan, turn the ignition to the OFF mode.
The fan is temperature controlled and
can start at any time the ignition is in the
ON mode.
Engine Coolant Checks
Check the engine coolant (antifreeze) protec-
tion every 12 months (before the onset of
freezing weather, where applicable). If the
engine coolant (antifreeze) is dirty, the sys-
tem should be drained, flushed, and refilled
with fresh OAT coolant (conforming to
MS.90032) by an authorized dealer. Check
the front of the A/C condenser for any accu-
mulation of bugs, leaves, etc. If dirty, clean
by gently spraying water from a garden hose
vertically down the face of the condenser.
Check the engine cooling system hoses for
brittle rubber, cracking, tears, cuts, and
tightness of the connection at the coolant
recovery bottle and radiator. Inspect the en-
tire system for leaks. DO NOT REMOVE THE
COOLANT PRESSURE CAP WHEN THE
COOLING SYSTEM IS HOT.
RAISING THE VEHICLE
In the case where it is necessary to raise the
vehicle, go to an authorized dealer or service
station.
TIRES
Tires — General Information
Tire Pressure
Proper tire inflation pressure is essential to
the safe and satisfactory operation of your
vehicle. Four primary areas are affected by
improper tire pressure:
• Safety and Vehicle Stability
• Economy
• Tread Wear
• Ride Comfort
Safety
WARNING!
• Improperly inflated tires are dangerous
and can cause collisions.
• Underinflation increases tire flexing and
can result in overheating and tire failure.
• Overinflation reduces a tire's ability to
cushion shock. Objects on the road and
chuckholes can cause damage that re-
sult in tire failure.
SERVICING AND MAINTENANCE
262

These effects can be reduced by timely rota-
tion of tires. The benefits of rotation are
especially worthwhile with aggressive tread
designs such as those on On/Off-Road type
tires. Rotation will increase tread life, help to
maintain mud, snow, and wet traction levels,
and contribute to a smooth, quiet ride.
Refer to the “Maintenance Plan” for the
proper maintenance intervals. More frequent
rotation is permissible if desired. The reasons
for any rapid or unusual wear should be
corrected prior to rotation being performed.
NOTE:
The premium Tire Pressure Monitor System
will automatically locate the pressure values
displayed in the correct vehicle position fol-
lowing a tire rotation.
The suggested rotation method is the
“rearward-cross” shown in the following dia-
gram.
STORING THE VEHICLE
If the vehicle should remain stationary for
more than a month, observe the following
precautions:
• Park your vehicle in a covered, dry and
possibly airy location the windows open
slightly.
• Check that the Electric Park Brake is not
engaged.
• Disconnect the negative (-) terminal from
the battery post and be sure that the battery
is fully charged. During storage check bat-
tery charge quarterly.• If you do not disconnect the battery from
the electrical system, check the battery
charge every 30 days.
• Clean and protect the painted parts by
applying protective waxes.
• Clean and protect polished metal parts by
applying protective waxes.
• Apply talcum powder to the front and rear
wiper blades and leave raised from the
glass.
• Cover the vehicle with an appropriate cover
taking care not to damage the painted sur-
face by dragging across dirty surfaces. Do
not use plastic sheeting which will not allow
the evaporation of moisture present on the
surface of the vehicle.
• Inflate the tires at a pressure of +7.25 psi
(+0.5 bar) higher than recommended on
the tire placard and check it periodically.
• Do not drain the engine cooling system.
• Whenever you leave the vehicle stationary
for two weeks or more, idle the engine for
approximately five minutes, with the air
conditioning system on and high fan speed.
This will ensure proper lubrication of the
Tire Rotation
273

WEIGHTS
Mass Parameters
Axle Load / lbs (kg) (GAWR)
Curb Mass /
lbs (kg)Allowable
Maximum
Gross Mass /
lbs (kg)
(GVWR)Maximum Allowable Mass of the Combina-
tion (vehicle + trailer) / lbs (kg)M
ax Payload /
lbs (kg)Max Roof
Load / lbs
(kg)
Front Axle Rear Axle
3.0L
V6 Turbo
Diesel3201 lbs
(1452 kg)3699 lbs
(1678 kg)5232 lbs
(2373 kg)6501 lbs
(2949 kg)14218 lbs (6449 kg) without skid plates
(except Summit & Trailhawk)
13003 lbs (5898 kg) with skid plates (ex-
cept Summit & Trailhawk)
13003 lbs (5898 kg) Summit or Trailhawk1270 lbs
(576 kg)150 (68)
3.6L V6
Gasoline3201 lbs
(1452 kg)3699 lbs
(1678 kg)4830 lbs
(2191 kg)6501 lbs
(2949 kg)10003 lbs (4537 kg) with standard cool-
ing
12701 lbs (5761 kg) with heavy duty
cooling1671 lbs
(758 kg)150 (68)
5.7L
V8 Gasoline3201 lbs
(1452 kg)3699 lbs
(1678 kg)5086 lbs
(2307 kg)6501 lbs
(2949 kg)11502 lbs (5217 kg) with standard cool-
ing
14218 lbs (6449 kg) with heavy duty
cooling except Summit
13003 lbs (5898 kg) with heavy duty
cooling Summit1415 lbs
(642 kg)150 (68)
6.4L
V8 SRT3201 lbs
(1452 kg)3699 lbs
(1678 kg)5165 lbs
(2343 kg)6501 lbs
(2949 kg)13003 lbs (5898 kg)1336 lbs
(606 kg)150 (68)
6.2L V8 Su-
percharged3325 lbs
(1508 kg)3699 lbs
(1678 kg)5415 lbs
(2456 kg)6598 lbs
(2993 kg)13100 lbs (5942 kg)1184 lbs
(537 kg)150 (68)
281

NON-SRT FLUID
CAPACITIES
U.S. Metric
Fuel (Approximate)
All Engines24.6 Gallons 93.1 Liters
AdBlue
®Fluid Tank8 Gallons 30.3 Liters
Engine Oil with Filter
3.6L Engine (API Certified SAE 0W-20, FCA Material Standard 9.55535-CR1 or
MS-6395)6 Quarts 5.6 Liters
5.7L Engine (API Certified SAE 5W-20, FCA Material Standard 9.55535-CR1 or
MS-6395)7 Quarts 6.6 Liters
3.0L Diesel Engine (API Certified SAE 5W-40, ACEA A3/B4, API CJ-4/SM, FCA
Material Standard 9.55535-D3 or MS-10902)8 Quarts 7.7 Liters
Cooling System *
3.6L Engine (OAT FCA Material Standard MS.90032) 10.4 Quarts 9.9 Liters
5.7 Liter Engine (OAT FCA Material Standard MS.90032) – Without Trailer Tow
Package15.4 Quarts 14.6 Liters
5.7 Liter Engine (OAT FCA Material Standard MS.90032) – With Trailer Tow
Package16 Quarts 15.2 Liters
3.0L Diesel Engine (OAT FCA Material Standard MS.90032) 12 Quarts 11.4 Liters
* Includes heater and coolant recovery bottle filled to MAX level.
TECHNICAL SPECIFICATIONS
290