2008 JEEP COMMANDER trailer

The Trailer Tow Package may includea4and7pin
wiring harness. Use a factory approved trailer harness
and connector.
The electrical connections are all complete to the vehicle
but you must mate the harness to a trailer connector.
Refer to the following illustrations.
Towing Tips
Before setting out on a trip, practice turning, stopping
and backing the trailer in an area away from heavy
traffic.
4 - Pin Connector
7- Pin Connector
STARTING AND OPERATING 357
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Towing Tips Ð Automatic Transmission
The ªDº range can be selected when towing. However, if
frequent shifting occurs while in this range, the ºTow/
Haulº mode (if equipped) or a lower gear range should
be selected.
NOTE:Using the ºTow/Haulº mode (if equipped) or a
lower gear range while operating the vehicle under
heavy operating conditions will improve performance
and extend transmission life by reducing excessive shift-
ing and heat build up. This action will also provide better
engine braking.
The automatic transmission fluid and filter should be
changed if you REGULARLY tow a trailer for more than
45 minutes of continuous operation. Refer to the ªMain-
tenance Scheduleº in Section 8 of this manual for trans-
mission fluid change intervals.
NOTE:Check the automatic transmission fluid level
before towing.
Towing Tips Ð Electronic Speed Control (If
Equipped)
þ
Don't use in hilly terrain or with heavy loads.
þWhen using the speed control, if you experience speed
drops greater than 10 mph (16 km/h), disengage until
you can get back to cruising speed.
þUse speed control in flat terrain and with light loads to
maximize fuel efficiency.
Towing Tips Ð Cooling System
To reduce potential for engine and transmission over-
heating, take the following actions:
þCity Driving
When stopped for short periods of time, put transmission
in N (Neutral) and increase engine idle speed.
þHighway Driving
Reduce speed.
358 STARTING AND OPERATING

Underhood Fuses (Integrated Power Module)
Cav-
ityCartridge
FuseMini Fuse Description
8 10 Amp
RedLt Park Lamps
Cav-
ityCartridge
FuseMini Fuse Description
9 10 Amp
RedTrailer-Tow Park
Lamps
10 10 Amp
RedRt Park Lamps
12 20 Amp
YellowFront Control Module
(FCM) Batt #4
13 20 Amp
YellowFront Control Module
(FCM) Batt #2
14 20 Amp
YellowAdjustable Pedal
15 20 Amp
YellowFt Fog Lamps
16 20 Amp
YellowHorn
17 20 Amp
YellowRear Wiper
Integrated Power Module
MAINTAINING YOUR VEHICLE 425
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Cav-
ityCartridge
FuseMini Fuse Description
18 20 Amp
YellowFront Control Module
(FCM) Batt #1
19 20 Amp
YellowLt Trailer-Tow Stop/
Turn
20 20 Amp
YellowFront Control Module
(FCM) Batt #3
21 20 Amp
YellowRt Trailer-Tow Stop/
Turn
22 30 Amp
PinkFinal Drive Control
Module (FDCM)
MOD
23 50 Amp
RedRadiator Fan
27 15 Amp
BlueIgnition Off Draw
(IOD) #1
28 20 Amp
YellowIgnition Off Draw
(IOD) #2Cav-
ityCartridge
FuseMini Fuse Description
29 10 Amp
RedOccupant Restraint
Controller (ORC) R/S
30 10 Amp
RedOccupant Restraint
Controller (ORC) R/O
VEHICLE STORAGE
If you are leaving your vehicle dormant for more than 21
days you may want to take steps to protect your battery.
You may:
²Remove fuse #27 in the Intelligent Power Module
labeled Ignition-Off Draw (IOD#1).
²Or, disconnect the negative cable from the battery.
426 MAINTAINING YOUR VEHICLE

Perform Maintenance Every(Where time and mileage
are listed, follow the interval that occurs first.)
Maintenance Items Miles Kilometers or Months
Change the engine oil and engine oil filter. 6,000 10 000 6
Rotate tires. 6,000 10 000 6
If using your vehicle for any of the following: Dusty
or off-road conditions. Inspect the engine air cleaner
filter, replace if necessary.12,000 20 000 12
Inspect the brake linings, replace if necessary. 12,000 20 000 12
Inspect the front & rear axle fluid, change if using
your vehicle for police, taxi, fleet, off-road or frequent
trailer towing.18,000 30 000 18
Inspect the CV joints. Perform the first inspection at
12,000 miles (20 000 km) or 12 months.24,000 40 000 24
Inspect exhaust system. Perform the first inspection at
12,000 miles (20 000 km) or 12 months.24,000 40 000 24
Inspect the front suspension, tie rod ends and boot
seals, replace if necessary.24,000 40 000 24
MAINTENANCE SCHEDULES 443
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Perform Maintenance Every(Where time and mileage
are listed, follow the interval that occurs first.)
Maintenance Items Miles Kilometers or Months
Replace the engine air cleaner filter.30,000 50 000 30
Check the PCV valve, replace if necessary. Perform
the first inspection at 60,000 miles (100 000 km) or 60
months.30,000 50 000 30
Inspect the transfer case fluid. 30,000 50 000 30
Replace the top row of spark plugs (4.7L Only). **30,000 50 000 30
Replace the spark plugs (3.7L/5.7L Engines).30,000 50 000 30
Change the automatic transmission fluid & filter if
using your vehicle for any of the following: police,
taxi, fleet or frequent trailer towing.60,000 100 000 60
Change the transfer case fluid if using your vehicle for
any of the following: police, taxi, fleet, off-road or fre-
quent trailer towing.60,000 100 000 60
Flush and replace the engine coolant. 102,000 170 000 60
Replace the ignition cables (4.7L Only).102,000 170 000 102
444 MAINTENANCE SCHEDULES
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GVWR............................... 344
Hands-Free Phone (UConnectŸ).............. 82
Hard Drive (HDD)....................... 239
Hazard Warning Flasher................... 366
Head Restraints......................... 110
Head Rests............................ 110
Headlights............................ 125
Bulb Replacement...................... 428
Cleaning............................ 418
On With Wipers....................... 126
Replacing............................ 428
Heated Mirrors.......................... 81
Heated Seats........................... 111
Heater, Engine Block..................... 280
High Beam Indicator..................... 187
High Beam/Low Beam Select (Dimmer) Switch . . 129
Hill Descent Control..................... 150
Hill Start Assist......................... 148Hitches
Trailer Towing........................ 350
Holder, Cup........................... 172
HomeLinkt(Garage Door Opener) Transmitter . . . 159
Hood Release.......................... 123
Hoses................................ 406
Ignition............................... 16
Cables (Spark Plug Wires)................ 392
Key ...............................14,16
Wiring System (Spark Plug Wires).......... 392
Ignition Key Removal..................... 16
Illuminated Entry........................ 21
Immobilizer (Sentry Key)................... 17
Infant Restraint........................60,61
Inflation Pressure Tires.................... 316
Information Center, Vehicle................. 195
Inside Rearview Mirror.................... 78
Instrument Cluster....................186,187
INDEX 465
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Remote.............................. 26
Steering
Power...........................305,398
Tilt Column.......................... 134
Wheel, Tilt........................... 134
Steering Wheel Mounted Sound System
Controls.............................. 254
Storage............................... 426
Storage, Vehicle......................270,426
Storing Your Vehicle...................... 426
Sun Roof.............................. 165
Sun Visor Extension....................... 81
Supplemental Restraint System - Airbag........ 48
Sway Control, Trailer..................... 147
Synthetic Engine Oil...................... 391
System, Navigation...................... 242
System, Remote Starting.................... 26
Tachometer............................ 189Telescoping Steering Column............... 134
Temperature Control, Automatic (ATC)........ 260
Temperature Gauge, Engine Coolant.......... 191
Tether Anchor, Child Restraint............... 64
Tilt Steering Column..................... 134
Time Delay, Headlight.................... 129
Tire and Loading Information Placard......... 311
Tire Identification Number (TIN)............. 310
Tire Markings.......................... 306
Tire Safety Information.................... 306
Tires ............................72,315,454
Air Pressure.......................... 316
Alignment and Balance.................. 321
Chains.............................. 322
Changing............................ 368
General Information.................... 315
High Speed.......................... 318
Inflation Pressures..................... 316
Jacking............................. 368
474 INDEX