2012 JEEP GRAND CHEROKEE heating

CAUTION!
•When “rocking” a stuck vehicle by moving 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
transmission shifting occurring).
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.
EMERGENCY TOW HOOKS — IF EQUIPPED
If your vehicle is equipped with tow hooks, there will be
one in the rear and two mounted on the front of the
vehicle. The rear hook will be located on the driver’s side
of the vehicle.
NOTE:For off-road recovery, it is recommended to use
both of the front tow hooks to minimize the risk of
damage to the vehicle.
564 WHAT TO DO IN EMERGENCIES

Under normal operating conditions, the catalytic con-
verter will not require maintenance. However, it is im-
portant to keep the engine properly tuned to assure
proper catalyst operation and prevent possible catalyst
damage.
NOTE:Intentional tampering with emissions control
systems can result in civil penalties being assessed
against you.
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.
7
MAINTAINING YOUR VEHICLE 591

Cavity CartridgeFuseMini
Fuse Description
M10 15 Amp
Blue Video/Universal
Garage Door
Opener
M11 10 Amp
Red Heating, Ventilation
& Air Conditioning
(Climate Control
System)
M12 30 Amp
Green Radio/Amplifier
M13 20 Amp
Yellow Instrument Cluster
M14 20 Amp
Yellow Back Up Camera –
If EquippedCavity Cartridge
FuseMini
Fuse Description
M15 20 Amp
Yellow Power Seat
Module(s)/
Adaptive Cruise
Control/Audio
Telematics/Daytime
Running Lights
Relay/Air Suspen-
sion Module/
Instrument Cluster
M16 10 Amp
Red Occupant Restraint
Controller
M18 15 Amp
Blue Stop Lamp
M19 25 Amp
Natural Automatic Shut-
down 1 and 2
M20 15 Amp
Blue Instrument Cluster
7
MAINTAINING YOUR VEHICLE 613

Oil Selection..................... 580,622
Oil Synthetic ........................ 581
Overheating ........................ 548
Starting ........................... 413
Temperature Gauge ................... 294
Engine Oil Viscosity ...................... 581
Engine Oil Viscosity Chart ................. 581
Enhanced Accident Response Feature .......... 76
Entry System, Illuminated .................. 23
Ethanol ............................... 510
Event Data Recorder ...................... 80
Exhaust Gas Caution ................. 48,95,513
Exhaust System ....................... 95,589
Exterior Finish Care ...................... 605
Exterior Lights .......................... 98
Filters Air Cleaner ......................... 582
Engine Oil ......................... 582 Engine Oil Disposal
................... 582
Finish Care ............................ 605
Flashers .............................. 548
Hazard Warning ..................... 548
Turn Signal ................. 98,287,618,620
Flexible Fuel Vehicles Cruising Range ...................... 517
Engine Oil ......................... 516
Fuel Requirements ................. 513,515
Maintenance ........................ 517
Replacement Parts .................... 517
Starting ........................... 516
Flipper Glass, Liftgate ..................... 45
Flooded Engine Starting ................... 417
Fluid Capacities ......................... 622
Fluid Leaks ............................. 98
Fluid Level Checks Automatic Transmission ..........601,602,603
Brake ............................. 598
10
INDEX 661

MTBE/ETBE........................... 510
Multi-Displacement Engine System ........... 462
Multi-Function Control Lever ............... 180
New Vehicle Break-In Period ................ 93
Occupant Restraints ................... 49,72,77
Occupant Restraints (Sedan) .............70,72,75
Odometer ............................. 287
Trip .............................. 287
Off-Pavement Driving (Off-Road) ............ 454
Off-Road Driving (Off-Pavement) ............ 454
Oil Change Indicator ..................... 310
Oil Change Indicator, Reset ................. 310
Oil, Engine ............................ 579
Capacity ........................... 622
Change Interval ..................... 580
Dipstick ........................... 579
Disposal ........................... 582 Filter
............................. 582
Filter Disposal ....................... 582
Identification Logo ................... 580
Materials Added to ................... 582
Recommendation .................. 580,622
Synthetic .......................... 581
Viscosity ........................ 581,622
Onboard Diagnostic System ..............575,576
Opener, Garage Door (HomeLink®) ........... 242
Operator Manual (Owner’s Manual) ............ 6
Outside Rearview Mirrors .................. 108
Overdrive .......................... 429,438
Overdrive OFF Switch .................429,438
Overhead Console ....................... 240
Overheating, Engine ................... 294,548
Owner’s Manual (Operator Manual) .........6,651
Paint Care ............................. 604
Paint Damage .......................... 604
10
INDEX 667