2015 JEEP GRAND CHEROKEE heating

CAUTION!(Continued)
the vehicle’s battery will discharge sufficiently to
degrade battery life and/or prevent the engine from
starting.
FREEING A STUCK VEHICLE
If your vehicle becomes stuck in mud, sand or snow, it
can often be moved using a rocking motion. Turn the
steering wheel right and left to clear the area around the
front wheels. Push and hold the lock button on the shift
lever. Then shift back and forth between DRIVE and
REVERSE while gently pressing the accelerator.
NOTE:Shifts between DRIVE and REVERSE can only be
achieved at wheel speeds of 5 mph (8 km/h) or less.
Whenever the transmission remains in NEUTRAL for
more than two seconds, you must push the brake pedal
to engage DRIVE or REVERSE.Use the least amount of accelerator pedal pressure that
will maintain the rocking motion without spinning the
wheels or racing the engine.
NOTE:Push theESC Offswitch (if necessary), to place
the Electronic Stability Control (ESC) system inPartial
Offmode, before rocking the vehicle. Refer to “Elec-
tronic Brake Control” in “Starting And Operating” for
further information. Once the vehicle has been freed,
push theESC Offswitch again to restoreESC On
mode.
CAUTION!
Racing the engine or spinning the wheels may lead to
transmission overheating and failure. Allow the en-
gine to idle with the transmission in NEUTRAL for at
least one minute after every five rocking-motion
cycles. This will minimize overheating and reduce
(Continued)
6
WHAT TO DO IN EMERGENCIES 519

CAUTION!(Continued)
the risk of transmission failure during prolonged
efforts to free a stuck vehicle.
WARNING!
Fast spinning tires can be dangerous. Forces gener-
ated by excessive wheel speeds may cause damage, or
even failure, of the axle and tires. A tire could
explode and injure someone. Do not spin your vehi-
cle’s wheels faster than 30 mph (48 km/h) or for
longer than 30 seconds continuously without stop-
ping when you are stuck and do not let anyone near
a spinning wheel, no matter what the speed.
CAUTION!
•When “rocking” a stuck vehicle by shifting be-
tween 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 damage the tires. Do not spin the wheels
above 30 mph (48 km/h) while in gear (no trans-
mission shifting occurring).
MANUAL PARK RELEASE
WARNING!
Always secure your vehicle by fully applying the
parking brake, before activating the Manual Park
(Continued)
520 WHAT TO DO IN EMERGENCIES

In unusual situations involving grossly malfunctioning
engine operation, a scorching odor may suggest severe
and abnormal catalyst overheating. If this occurs, stop
the vehicle, turn off the engine and allow it to cool.
Service, including a tune-up to manufacturer’s specifica-
tions, should be obtained immediately.
To minimize the possibility of catalytic converter dam-
age:
•Do not shut off the engine or interrupt the ignition,
when the transmission is in gear and the vehicle is in
motion.
•Do not try to start the engine by pushing or towing the
vehicle.
•Do not idle the engine with any spark plug wires
disconnected or removed, such as when diagnostic
testing, or for prolonged periods during very rough
idle or malfunctioning operating conditions.Cooling System
WARNING!
•When working near the radiator cooling fan, dis-
connect the fan motor lead or turn the ignition
switch to the OFF position. The fan is temperature
controlled and can start at any time the ignition
switch is in the ON position.
•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 is hot.
Coolant Checks
Check the engine coolant (antifreeze) protection every 12
months (before the onset of freezing weather, where
556 MAINTAINING YOUR VEHICLE

Fails To Start..........................402
Flooded, Starting.......................402
Fuel Requirements...................471, 591
Jump Starting..........................514
Oil ...........................532, 591, 592
Oil Change Interval......................532
Oil Filler Cap.......................533, 534
Oil Filter.............................535
Oil Selection.......................533, 591
Oil Synthetic..........................534
Overheating...........................500
Starting..............................399
Temperature Gauge......................286
Engine Oil Viscosity....................533, 534
Enhanced Accident Response Feature............78
Entry System, Illuminated....................22
Ethanol................................471
Event Data Recorder........................81
Exhaust Gas Caution...................108, 474Exhaust System.......................108, 554
Exterior Lights...........................111
Filters
Air Cleaner...........................535
Air Conditioning.................377, 536, 542
Engine Oil.........................535, 592
Engine Oil Disposal.....................534
Flashers................................500
Hazard Warning........................500
Turn Signal..................111,286, 587, 588
Flooded Engine Starting....................402
Fluid, Brake.............................593
Fluid Capacities..........................591
Fluid Leaks.............................112
Fluid Level Checks
Brake................................563
Cooling System.........................556
Engine Oil............................532
10
INDEX 619

Oil Filter, Selection........................535
Onboard Diagnostic System..................528
Opener, Garage Door (HomeLink®)............242
Operating Precautions......................528
Operator Manual (Owner’s Manual).............6
Outside Rearview Mirrors...................128
Overhead Console.........................240
Overheating, Engine.......................500
Owner’s Manual (Operator Manual)..........6,610
Paint Care..............................568
Panic Alarm..............................25
Parking Brake............................423
ParkSense® System, Rear................218, 227
Passing Light............................175
Passive Entry.............................36
Pets...................................106
Placard, Tire And Loading Information..........444Power
Brakes...............................425
Distribution Center (Fuses)................575
Door Locks............................33
Inverter..............................263
Lift Gate..............................47
Mirrors..............................129
Outlet (Auxiliary Electrical Outlet)...........259
Seats.............................142, 144
Steering..............................422
Sunroof...........................251, 254
Tilt/Telescoping Steering Column............180
Windows..............................41
Power Seats
Down...............................144
Forward..........................142, 144
Rearward.........................142, 144
Up .................................144
Power Steering Fluid.......................593
10
INDEX 625