2005 JEEP GRAND CHEROKEE towing

The best time to check the engine oil level is about 5
minutes after a fully warmed engine is shut off or before
starting the engine after it has sat overnight.
Checking the oil while the vehicle is on level ground will
improve the accuracy of the oil level readings. Maintain
the oil level in the SAFE level range. Adding 1 U.S. Quart
(0.95L) of oil when the level is at the bottom of the SAFE
range will result in the level being at the top of the SAFE
range.
CAUTION!
Overfilling or underfilling the crankcase will cause
aeration or loss of oil pressure. This could damage
your engine.
Change Engine Oil
Road conditions as well as your kind of driving affect the
interval at which your oil should be changed. Check the
following to determine if any apply to you:
•Day or night temperatures are below 32°F (0°C)
•Stop and go driving
•Extensive 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
•Taxi, Police, or delivery service (Commercial Service)
•Off road or desert operation
•If equipped for and operating with E-85 (ethanol) fuel
MAINTAINING YOUR VEHICLE 317
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WARNING!
A hot exhaust system can start a fire if you park over
materials that can burn. Such materials might be
grass or leaves coming into contact with your ex-
haust system. Do not park or operate your vehicle in
areas where your exhaust system can contact any-
thing that can burn.
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.
•Do not idle the engine for prolonged periods during
very rough idle or malfunctioning operating condi-
tions.
•Do not allow vehicle to run out of fuel.
NOTE:Intentional tampering with emissions control
systems can result in civil penalties being assessed
against you.
322 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
•Taxi, police, or delivery service (commercial service)
362 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
•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 (163 000
km) or 60 months, whichever comes first, and follow
“Schedule B” of the “Maintenance Schedules” section of
this manual.
SCHEDULE “B” 365
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Miles 48,000 51,000 54,000 57,000 60,000
(Kilometers) (77 000) (82 000) (86 000) (91 000) (96 000)
Drain and refill the front and rear axles. X X
Drain and refill the automatic transmission fluid,
and replace main sump filter (4.7L/5.7L Only).‡X
Drain and refill the transfer case fluid. X
Flush and replace engine coolant/anti-freeze at 60
months, if not done at 102,000 miles (163 000 km).X
NOTE:‡ Applies only if vehicle is used for frequent
trailer towing, or fleet/commercial service.
370 SCHEDULE “B”
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Miles 108,000 111,000 114,000 117,000 120,000
(Kilometers) (173 000) (178 000) (182 000) (187 000) (192 000)
Drain and refill the automatic transmission fluid,
replace main sump filter, and spin-on cooler return
filter (if equipped). (4.7L/5.7L Only).‡X
Drain and refill the transfer case fluid. X
Flush and replace the engine coolant/anti-freeze at
120 months, if not replaced at 102,000 miles (163
000 km).X
NOTE:‡ Applies only if vehicle is used for frequent
trailer towing, or fleet/commercial service.
Inspection and service should also be performed anytime
a malfunction is observed or suspected. Retain all re-
ceipts. This maintenance is recommended by the manufac-
turer to the owner, but is not required to maintain
emissions warranty.
SCHEDULE “B” 375
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Auxiliary Electrical Outlet.................. 148
Auxiliary Power Outlet................... 148
Battery............................... 324
Emergency Starting..................... 303
Keyless Transmitter Replacement............ 21
Saving Feature (Protection)............... 112
Belts, Drive............................ 320
Belts, Seat.............................. 28
Body Mechanism Lubrication............... 327
B-Pillar Location........................ 259
Brake System........................... 334
Anti-Lock........................... 246
Hoses.............................. 335
Master Cylinder....................... 335
Parking............................. 244
Trailer Towing........................ 284
Warning Light........................ 164
Brake/Transmission Interlock............... 234Break-In Recommendations, New Vehicle........ 63
Bulb Replacement.....................350,351
Calibration, Compass..................... 182
Capacities, Fluid........................ 357
Caps, Filler
Fuel................................ 281
Radiator (Coolant Pressure)............... 331
Car Washes............................ 341
Carbon Monoxide Warning............64,140,280
Cargo Area Cover....................... 151
Cargo Area Features...................... 150
Cargo Compartment...................... 150
Light............................... 150
Luggage Carrier....................... 157
Cargo Light............................ 150
Cargo Load Floor........................ 154
Cargo Tie-Downs........................ 153
Carpeting............................. 343
INDEX 393
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Data Recorder, Event...................... 51
Daytime Running Lights................... 115
Dealer Service.......................... 316
Defroster, Rear Window................... 214
Defroster, Windshield................65,215,222
Diagnostic System, Onboard................ 313
Dimmer Switch, Headlight................. 116
Dipsticks
Automatic Transmission................. 337
Oil (Engine).......................... 316
Power Steering........................ 326
Disabled Vehicle Towing................... 306
Disposal
Engine Oil........................... 320
Used Engine Fluids..................... 320
Door Locks............................. 15
Door Locks, Automatic.................... 17
Door Opener, Garage..................... 138
Doors................................. 15Drive Belts............................ 320
Driving............................... 249
Off-Pavement......................... 250
Off-Road............................ 250
Electric Remote Mirrors.................... 75
Electrical Outlet, Auxiliary................. 148
Electronic Speed Control................... 134
Electronic Stability Program................ 124
Electronic Throttle Control Warning Light...... 170
Electronic Vehicle Information Center.......168,171
Emergency, In Case of
Freeing Vehicle When Stuck............... 238
Hazard Warning Flasher................. 296
Jacking............................. 298
Jump Starting......................... 303
Tow Hooks.......................... 305
Emission Control System Maintenance......314,362
INDEX 395
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