2008 JEEP GRAND CHEROKEE heater

IF YOUR ENGINE OVERHEATS
In any of the following situations, you can reduce the
potential for overheating by taking the appropriate ac-
tion.
²On the highways Ð Slow down.
²In city traffic Ð While stopped, put transmission in N
(Neutral), but do not increase engine idle speed.
NOTE:There are steps that you can take to slow down
an impending overheat condition. If your air conditioner
is on, turn it off. The air conditioning system adds heat to
the engine cooling system and turning off the A/C
removes this heat. You can also turn the Temperature
Control to maximum heat, the Mode Control to floor, and
the Fan 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.
CAUTION!
Driving with a hot cooling system could damage
your vehicle. If the temperature gauge reads ªHº,
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
the ªHº, and you hear continuous chimes, turn the
engine off immediately, and call for service.
WHAT TO DO IN EMERGENCIES 371
6

1. Remove all metal jewelry such as watch bands or
bracelets which might make an unintended electrical
contact.
2. Park the booster vehicle within cable reach but with-
out letting the vehicles touch. Set the parking brake on
both vehicles, place the transmission in P (Park), and turn
the ignition OFF.
3. Turn off the heater, radio, and all unnecessary electri-
cal loads.
4. Connect one end of a jumper cable to the positive
terminal of the booster battery. Connect the other end of
the same cable to the positive terminal of the discharged
battery.WARNING!
Do not permit vehicles to touch each other as this
could establish a ground connection and personal
injury could result.
5. Connect the other cable, first to the negative terminal
of the booster battery and then to the engine of the
vehicle with the discharged battery. Make sure you have
a good contact on the engine.
6. Start the engine in the vehicle which has the booster
battery, let the engine idle a few minutes, then start the
engine in the vehicle with the discharged battery.
7. When removing the jumper cables, reverse the above
sequence exactly. Be careful of the moving belts and fan.
WHAT TO DO IN EMERGENCIES 379
6

Cav-
ityCartridge
FuseMini Fuse Description
1 30 Amp
GreenAudio Amp (B+)
2 15 Amp
BlueSunroof (B+)
3 10 Amp
RedHtd Mirror (EBL)
4 20 Amp
YellowRr Pwr Out (B+)
5 10 Amp
RedRr HVAC (R/O)
(Commander Only)
6 Spare (B+)
7 20 Amp
YellowDoor Locks (B+)
8 15 Amp
BlueSteer Col Lock (B+)
(ELV)Cav-
ityCartridge
FuseMini Fuse Description
9 20 Amp
YellowPwr Outlet (B+)
10 10 Amp
RedFinal Drive Control
Module (FDCM),
Heater Ventilation, Air
Conditioning (HVAC),
Switch Bank, Transfer
Case Switch, O/H,
Heater Ventilation, Air
Conditioning (HVAC)
Relay, Rear Park As-
sist
11 Spare (B+)
12 10 Amp
RedDoor Mods, Mem. Sw,
O/H Lamps, IP Cour-
tesy Lamps, Glove
Box Lamp (B+)
MAINTAINING YOUR VEHICLE 427
7

Underhood Fuses (Power Distribution Center)
Cav-
ityCartridge
FuseMini Fuse Description
1 50 Amp
GreenPTC Heater 1 (Diesel
Only)
Cav-
ityCartridge
FuseMini Fuse Description
2 40 Amp
GreenHID Headlamps
3 50 Amp
GreenPTC Heater 2 (Diesel
Only)
4 30 Amp
PinkPower Outlets
5 50 Amp
RedPTC Heater 3 (Diesel
Only)
6 30 Amp
PinkCig Lighter, Trail Tow
Batt
7 40 Amp
GreenPower Liftgate (Com-
mander Only)
8 40 Amp
GreenStarter, JB Power
9 Ð Spare
10 Ð Spare
Power Distribution Center
MAINTAINING YOUR VEHICLE 429
7

FLUIDS AND CAPACITIES
U.S. Metric
Fuel (Approximate)
3.7/4.7/5.7L Gasoline Engines 21 Gallons 79 Liters
3.0L Diesel Engine 22 Gallons 83 Liters
Engine Oil with Filter
3.7 Liter Engine (SAE 5W-20, API Certified) 5 Qts 4.7 Liters
4.7 Liter Engine (SAE 5W-20, API Certified) 6 Qts 5.7 Liters
5.7 Liter Engine (SAE 5W-20, API Certified) 7 Qts 6.6 Liters
3.0 Liter Diesel Engine (SAE 5W-30 Synthetic, API Certified Low Ash) 10 Qts 9.5 Liters
Cooling System *
3.7 Liter Engine (MopartEngine Coolant/Antifreeze 5 Year/100,000 Mile Formula) 9 Qts 10 Liters
4.7 Liter Engine (MopartEngine Coolant/Antifreeze 5 Year/100,000 Mile Formula) 14.5 Qts 13.7 Liters
5.7 Liter Engine (MopartEngine Coolant/Antifreeze 5 Year/100,000 Mile Formula) 14.5 Qts 13.7 Liters
3.0 Liter Diesel Engine (MopartAntifreeze/Engine Coolant 5 Year/100,000 Mile
Formula)14 Qts 13.2 Liters
* Includes heater and coolant recovery bottle filled to MAX level.
440 MAINTAINING YOUR VEHICLE

E-85 Fuel............................. 340
Electric Remote Mirrors.................... 79
Electrical Outlet, Auxiliary (Power Outlet)...... 168
Electronic Brake Control System............. 138
Anti-Lock Brake System................. 138
Brake Assist System.................... 140
Electronic Roll Mitigation................ 141
Electronic Stability Program............... 142
Traction Control System................. 139
Electronic Roll Mitigation (ERM)............. 141
Electronic Speed Control (Cruise Control)...... 135
Electronic Stability Program (ESP)............ 142
Electronic Throttle Control Warning Light...... 195
Electronic Vehicle Information Center
(EVIC).............................193,196
Emergency, In Case of
Freeing Vehicle When Stuck............... 292
Hazard Warning Flasher................. 370
Jacking............................. 372Jump Starting......................... 378
Tow Hooks.......................... 381
Emission Control System Maintenance......391,444
Engine
Air Cleaner.......................... 398
Block Heater......................... 283
Break-In Recommendations................ 68
Compartment................386,387,388,389
Compartment Identification......386,387,388,389
Cooling............................. 407
Exhaust Gas Caution..................69,340
Fails to Start.......................... 277
Fuel Requirements..................336,440
Multi-Displacement..................... 309
Oil ..............................394,440
Oil Change Interval.................... 395
Oil Disposal.......................... 397
Oil Filter............................ 397
Oil Filter Disposal...................... 397
474 INDEX

General Information...............20,26,108,336
Glass Cleaning.......................... 425
Glow Plug Light........................ 196
Gross Axle Weight Rating.................. 352
Gross Vehicle Weight Rating................ 351
GVWR............................... 348
Hands-Free Phone (UConnectŸ).............. 81
Hard Drive (HDD)....................... 241
Hazard Warning Flasher................... 370
Head Restraints......................... 111
Head Rests............................ 111
Headlights..........................124,435
Bulb Replacement...................... 436
Cleaning............................ 425
On With Wipers....................... 125
Replacing............................ 436
Heated Mirrors.......................... 80
Heated Seats........................ 111,113Heater, Engine Block..................... 283
High Beam Indicator..................... 188
High Beam/Low Beam Select (Dimmer) Switch . . 128
Hill Descent Control..................... 149
Hill Start Assist......................... 147
Hitches
Trailer Towing........................ 354
Holder, Cup........................... 171
HomeLinkt(Garage Door Opener) Transmitter . . . 158
Hood Release.......................... 122
Hoses................................ 412
Ignition............................... 16
Cables (Spark Plug Wires)................ 398
Key ...............................14,16
Wiring System (Spark Plug Wires).......... 398
Ignition Key Removal..................... 16
Illuminated Entry........................ 21
Immobilizer (Sentry Key)................... 17
INDEX 477
10

Oil ................................ 395
Speed Control (Cruise Control).............. 135
Speedometer........................... 188
Starting............................... 275
Automatic Transmission................. 275
Cold Weather......................276,283
Engine Block Heater.................... 283
Engine Fails to Start.................... 277
Remote.............................. 26
Steering
Power...........................308,403
Tilt Column.......................... 133
Wheel, Tilt........................... 133
Steering Wheel Mounted Sound System
Controls.............................. 256
Storage............................... 433
Storage, Behind the Seat................... 172
Storage Bin............................ 172
Storage Compartment, Center Seat............ 117Storage, Vehicle......................269,433
Storing Your Vehicle...................... 433
Sun Roof.............................. 165
Sun Visor Extension....................... 81
Sunglasses Storage....................... 158
Supplemental Restraint System - Airbag........ 46
Sway Control, Trailer..................... 146
Synthetic Engine Oil...................... 397
System, Navigation...................... 244
System, Remote Starting.................... 26
Tachometer............................ 190
Telescoping Steering Column............... 133
Temperature Control, Automatic (ATC)........ 261
Temperature Gauge, Engine Coolant.......... 192
Tether Anchor, Child Restraint............... 62
Tie Down Hooks, Cargo................... 174
Tilt Steering Column..................... 133
Time Delay, Headlight.................... 128
486 INDEX