engine overheat JEEP GRAND CHEROKEE 2021 Owner handbook (in English)

WARNING!
of the axle and tires. A tire could explode
and injure someone. Do not spin your
vehicle's wheels faster than 30 mph
(48 km/h) or for longer than 30 seconds
continuously without stopping when you
are stuck and do not let anyone near a
spinning wheel, no matter what the speed.
CAUTION!
• Racing the engine or spinning the
wheels may lead to transmission over-
heating and failure. Allow the engine to
idle with the transmission in NEUTRAL
for at least one minute after every five
rocking-motion cycles. This will mini-
mize overheating and reduce the risk of
transmission failure during prolonged
efforts to free a stuck vehicle.
CAUTION!
• When “rocking” a stuck vehicle by shift-
ing between DRIVE and REVERSE, do
not spin the wheels faster than 15 mph
(24 km/h), or drivetrain damage may
result.
• Revving the engine or spinning the
wheels too fast may lead to transmission
overheating and failure. It can also dam-
age the tires. Do not spin the wheels
above 30 mph (48 km/h) while in gear
(no transmission shifting occurring).
TOWING A DISABLED
VEHICLE
This section describes procedures for towing
a disabled vehicle using a commercial towing
service. If the transmission and drivetrain are
operable, disabled vehicles may also be
towed as described under “Recreational Tow-
ing” in the “Starting And Operating” section
of the Owner’s Manual.
NOTE:
Vehicles equipped with Quadra-Lift must be
placed in Transport mode, before tying them
down (from the body) on a trailer or flatbed
truck. Refer to the section on Quadra-Lift for
more information. If the vehicle cannot be
placed in Transport mode (for example, en-
gine will not run), tie-downs should be fas-
tened over the tires using specific tire tie-
down nets. Failure to follow these
instructions may cause fault codes to be set
and/or cause loss of proper tie-down tension.
231

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

Monitor, Tire Pressure System.......103
Mopar Accessories.............298
Multi-Function Control Lever........37
Navigation..................328
New Vehicle Break-In Period. . . .152, 153
Occupant Restraints............107
Octane Rating, Gasoline (Fuel)......282
Oil, Engine
Capacity..............290, 291
Checking.................253
Dipstick..................253
Pressure Warning Light.........75
Recommendation.........290, 291
Viscosity..............290, 291
Oil Pressure Light...............75
Onboard Diagnostic System.........85
Operating Precautions............85
Outlet
Power....................62
Overheating, Engine............228
Paddle Shifters...............157
ParkSense Active Park Assist.......180
ParkSense System, Rear......177, 179
Passive Entry..................21Personalized Main Menu......302, 308
Pets......................140
Phone
Pairing..................335
Phonebook..................338
Phone, Hands-Free (Uconnect)......333
Phone (Uconnect)..............333
Pinch Protection.............55, 58
Power
Distribution Center (Fuses)......210
Outlet (Auxiliary Electrical Outlet) . . .62
Sunroof................54, 56
Tilt/Telescoping Steering Column . . .34
Windows..................52
Pregnant Women And Seat Belts.....113
Preparation For Jacking..........218
Pretensioners
Seat Belts
...............
.113
Quadra-Lift..................163
Quadra-T
rac .................159
Radial Ply Tires...............265
Radio
Presets...............303, 309
Radio Operation...........301, 307
Radio Screens.............301, 307Rain Sensitive Wiper System........42
Rear Camera.................184
Rear Cross Path................99
Rear ParkSense System.......177, 179
Rear Wiper/Washer..............43
Recreational Towing.............198
Reformulated Gasoline...........284
Release, Hood.................59
Reminder, Seat Belt............109
Remote Control
Starting System..............17
Remote Keyless Entry............15
Arm The Alarm..............18
Disarm The Alarm.............18
Remote Starting System...........17
Replacement Bulbs.............204
Replacement Keys..............15
Replacement Tires.............266
Restraints, Child...............127
Restraints, Head...............30
Roll Over Warning................2
Roof Luggage Rack..............64
Rotation, Tires................272
Safety Checks Inside Vehicle.......141
Safety Checks Outside Vehicle......143
Safety, Exhaust Gas.............141
371