2006 JEEP GRAND CHEROKEE trailer

If using a manual transmission vehicle for trailer towing,
all starts must be in FIRST gear to avoid excessive clutch
slippage.
Towing Tips—Automatic Transmission
The“D”range can be selected when towing. However, if
frequent shifting occurs while in this range, the”Tow/
Haul”mode (if equipped) or the“3”range should be
selected. Shift the transmission to Drive position 2 on
more severe grades.
NOTE:Using the”Tow/Haul”mode (if equipped) or
the“3”range while operating the vehicle under heavy
operating conditions will improve performance and ex-
tend transmission life by reducing excessive shifting 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. See Schedule“B”in
section 8 of this manual for transmission fluid change
intervals.
NOTE:Check the automatic transmission fluid level
before towing.
Towing Tips—Electronic Speed Control (If
Equipped)

Don’t use in hilly terrain or with heavy loads.
When 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.
Use speed control in flat terrain and with light loads to
maximize fuel efficiency.
STARTING AND OPERATING 319
5

•More than 50% of your driving is at sustained high
speeds during hot weather, above 90°F (32°C)
•Trailer towing
•Taxi, Police, or delivery service (Commercial Service)
•Off road or desert operation
•If equipped for and operating with E-85 (ethanol) fuel
IfANYof these apply to you, then change your engine oil
every 3,000 miles (5 000 km) or 3 months, whichever
comes first, and follow the maintenance recommenda-
tions in“Maintenance Schedule B.”
If none of these apply to you, then change your engine oil
every 6,000 miles (10 000 km) or 6 months, whichever
comes first.
NOTE:Under no circumstances should oil change in-
tervals exceed 6,000 miles (10 000 km) or 6 months
whichever comes first.
Engine Oil Selection
For best performance and maximum protection for all
engines under all types of operating conditions, the
manufacturer recommends engine oils that are API Cer-
tified and meet the requirements of DaimlerChrysler
Material Standard MS-6395. Use Moparor an equiva-
lent oil meeting the specification MS-6395.
Oil Filler Caps
352 MAINTAINING YOUR VEHICLE

EMISSION CONTROL SYSTEM MAINTENANCE
The“Scheduled”maintenance services, listed inbold
typemust be done at the times or mileages specified to
assure the continued proper functioning of the emission
control system. These, and all other maintenance services
included in this manual, should be done to provide best
vehicle performance and reliability. More frequent main-
tenance may be needed for vehicles in severe operating
conditions such as dusty areas and very short trip
driving.
Inspection and service also should be done any time a
malfunction is suspected.
NOTE:Maintenance, replacement, or repair of the emis-
sion control devices and systems on your vehicle may be
performed by any automotive repair establishment or
individual using any automotive part which has been
certified pursuant to U.S. EPA or, in the State of Califor-
nia, California Air Resources Board regulations.
MAINTENANCE SCHEDULES
There are two maintenance schedules that show the
requiredservice for your vehicle.
First is ScheduleB. It is for vehicles that are operated
under the conditions that are listed below and at the
beginning of the schedule.
•Day or night temperatures are below 32°F(0°C)
•Stop and go driving
•Excessive engine idling
•Driving in dusty conditions
•Short trips of less than 10 miles (16.2 km)
•More than 50% of your driving is at sustained high
speeds during hot weather, above 90°F (32°C)
•Trailer towing
•Heavy loading
396 MAINTENANCE SCHEDULES
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Schedule“B”
Follow this schedule if you usually operate your vehicle
under one or more of the following conditions.
•Day or night temperatures are below 32°F(0°C)
•Stop and go driving
•Excessive engine idling
•Driving in dusty conditions
•Short trips of less than 10 miles (16.2 km)
•More than 50% of your driving is at sustained high
speeds during hot weather, above 90°F (32°C)
•Trailer towing
•Heavy loading
•Taxi, police, or delivery service (commercial service)
•Off-road or desert driving
•If equipped for and operated with E-85 (ethanol)
fuel.
NOTE:IfANYof these apply to you, change your
engine oil every 3,000 miles (5 000 km) or 3 months,
whichever comes first, and follow the maintenance rec-
ommendations in“Maintenance Schedule B.”
NOTE:IfANYof these apply to you then flush and
replace your engine coolant every 102,000 miles (170 000
km) or 60 months, whichever comes first, and follow
“Schedule B”of the“Maintenance Schedules”section of
this manual.
SCHEDULE“B”399
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Tachometer.......................... 182
Gear Ranges........................... 255
General Information....................23,300
Glass Cleaning.......................... 379
Gross Axle Weight Rating.................. 309
Gross Vehicle Weight Rating................ 309
Hands-Free Phone (UConnect™) .............. 83
Hazard Warning Flasher................... 328
Head Restraints......................... 108
Head Rests............................ 108
Headlights............................ 122
Bulb Replacement...................... 387
On With Wipers....................... 123
Replacing............................ 387
Heated Mirrors.......................... 80
Heated Seats........................... 110
Heater, Engine Block..................... 253
High Beam Indicator..................... 180High Beam/Low Beam Select (Dimmer) Switch . . 126
Hitches
Trailer Towing........................ 311
Holder, Cup........................... 164
HomeLink(Garage Door Opener) Transmitter . . . 152
Hood Release.......................... 119
Hoses................................ 369
Identifying Your Engine................... 345
Ignition
Key ................................. 12
Illuminated Entry........................ 16
Infant Restraint.......................... 58
Inflation Pressure Tires.................... 288
Information Center, Vehicle................. 187
Inside Rearview Mirror.................... 78
Instrument Cluster....................179,180
Instrument Panel and Controls.............. 178
Instrument Panel Lens Cleaning............. 379
430 INDEX

Tire Identification Number (TIN)............. 282
Tire Markings.......................... 279
Tire Safety Information.................... 279
Tires ............................70,287,421
Air Pressure.......................... 288
Alignment and Balance.................. 293
Chains.............................. 300
Changing............................ 330
General Information.................... 287
High Speed.......................... 290
Inflation Pressures..................... 288
Jacking............................. 330
Life of Tires.......................... 292
Load Capacity.....................283,284
Pressure Monitor System (TPMS)........... 294
Pressure Warning Light.................. 183
Quality Grading....................... 421
Radial.............................. 290
Replacement......................... 292Rotation............................. 301
Safety............................70,279
Sizes............................... 280
Spare Tire........................... 331
Spinning............................ 290
Tread Wear Indicators................... 291
Wheel Mounting....................... 335
Tongue Weight/Trailer Weight.............. 313
Torque Converter Clutch.................. 260
Tow Hooks, Emergency................... 338
Tow/Haul Indicator Light................. 184
Towing............................308,339
Disabled Vehicle....................... 339
Guide.............................. 312
Recreational.......................... 320
Weight.............................. 312
Traction Control......................... 132
Traction Control Light.................... 182
Trailer Towing.......................... 308
INDEX 439
10

Cooling System Tips.................... 320
Hitches............................. 311
Minimum Requirements................. 314
Trailer and Tongue Weight................ 313
Wiring.............................. 317
Trailer Towing Guide..................... 312
Trailer Weight.......................... 312
Transfer Case........................... 374
Maintenance.......................... 374
Transmission
Automatic........................254,371
Maintenance.......................... 371
Range Indicator....................... 186
Shifting............................. 254
Transmitter Battery Service (Remote Keyless Entry) . 23
Transmitter, Garage Door Opener (HomeLink) . . 152
Transmitter, Remote Keyless Entry (RKE)........ 20
Tread Wear Indicators.................... 291
Turn Signals...................126,180,388,390Underhood Fuses.....................382,384
Uniform Tire Quality Grades................ 421
Universal Transmitter..................... 152
Upholstery Care........................ 378
Vacuum/Vapor Harnesses................. 369
Vanity Mirrors........................... 82
Variance, Compass....................... 200
Vehicle Identification Number (VIN)............ 7
Vehicle Loading......................... 284
Vehicle Modifications/Alterations.............. 8
Vehicle Storage.......................245,385
Video Entertainment System
(Rear Seat Video System).................. 225
Viscosity, Engine Oil...................... 353
Warning Flasher, Hazard.................. 328
Warnings and Cautions..................... 7
Warranty Information..................... 419
440 INDEX