JEEP GRAND CHEROKEE 2012 Owner handbook (in English)

13. Have the aluminum road wheel and tire
repaired as soon as possible, properly secure
the spare tire with the special wing nut torqued
to 3.7 ft-lbs (5 N·m), reinstall the jack and tool
kit foam tray, and latch the rear load floor cover.
WARNING!
A loose tire or jack, thrown forward in a
collision or hard stop could endanger the
occupants of the vehicle. Always stow the jack
parts and the spare tire in the places provided.
Have the deflated (flat) tire repaired or re-
placed immediately.
Road Tire Installation
1. Mount the road tire on the axle.
2. Install the remaining lug nuts with the cone
shaped end of the nut toward the wheel. Lightly
tighten the lug nuts.
WARNING!
To avoid the risk of forcing the vehicle off the
jack, do not tighten the wheel nuts fully until
the vehicle has been lowered. Failure to follow
this warning may result in personal injury.
3. Lower the vehicle to the ground by turning
the jack handle counterclockwise.
4. Finish tightening the lug nuts. Push down on
the wrench while at the end of the handle for
increased leverage. Tighten the lug nuts in a
star pattern until each nut has been tightened
twice. The correct tightness of each lug nut is
110 ft/lbs (150 N·m). If in doubt about the
correct tightness, have them checked with a
torque wrench by your authorized dealer or
service station. 5. After 25 miles (40 km) check the lug nut
torque with a torque wrench to ensure that all
lug nuts are properly seated against the wheel.
JUMP-STARTINGIf your vehicle has a discharged battery it can
be jump-started using a set of jumper cables
and a battery in another vehicle or by using a
portable battery booster pack. Jump-starting
can be dangerous if done improperly so please
follow the procedures in this section carefully.
NOTE:
When using a portable battery booster pack
follow the manufacturer’s operating instruc-
tions and precautions.
CAUTION!
Do not use a portable battery booster pack or
any other booster source with a system volt-
age greater than 12 Volts or damage to the
battery, starter motor, alternator or electrical
system may occur.
Stowed Spare
287

WARNING!
Do not attempt jump-starting if the battery is
frozen. It could rupture or explode and cause
personal injury.
Preparations For Jump-StartThe battery in your vehicle is located under the
passenger’s front seat. There are remote loca-
tions located under the hood to assist in jump-
starting.
WARNING!
•Take care to avoid the radiator cooling fan
whenever the hood is raised. It can start
anytime the ignition switch is on. You can
be injured by moving fan blades.
• Remove any metal jewelry such as watch
bands or bracelets that might make an
inadvertent electrical contact. You could be
seriously injured.
• Batteries contain sulfuric acid that can burn
your skin or eyes and generate hydrogen
gas which is flammable and explosive.
Keep open flames or sparks away from the
battery.
1. Set the parking brake, shift the automatic
transmission into PARK and turn the ignition to
LOCK.
2. Turn off the heater, radio, and all unneces-
sary electrical accessories.
3. Remove the protective cover over the re-
mote positive (+)battery post. Pull upward on
the cover to remove it. 4. If using another vehicle to jump-start the
battery, park the vehicle within the jumper
cables reach, set the parking brake and make
sure the ignition is OFF.
WARNING!
Do not allow vehicles to touch each other as
this could establish a ground connection and
personal injury could result.
Jump-Starting Procedure
WARNING!
Failure to follow this procedure could result in
personal injury or property damage due to
battery explosion.
CAUTION!
Failure to follow these procedures could result
in damage to the charging system of the
booster vehicle or the discharged vehicle.
1. Connect the positive (+)end of the jumper
cable to the remote positive (+)post of the
discharged vehicle.
Remote Battery Posts
1 — Remote Positive (+) Post
(covered with protective cap)
2 — Remote Negative (-) Post
288

2. Connect the opposite end of the positive(+)
jumper cable to the positive (+)post of the
booster battery.
3. Connect the negative end (-)of the jumper
cable to the negative (-)post of the booster
battery.
4. Connect the opposite end of the negative (-)
jumper cable to the remote negative (-)post of
the vehicle with the discharged battery.
WARNING!
Do not connect the cable to the negative post
(-) of the discharged battery. The resulting
electrical spark could cause the battery to
explode and could result in personal injury.
5. Start the engine in the vehicle that has the
booster battery, let the engine idle a few min-
utes, and then start the engine in the vehicle
with the discharged battery. Once the engine is started, remove the jumper
cables in the reverse sequence:
6. Disconnect the negative
(-)jumper cable
from the remote negative (-)post of the dis-
charged vehicle.
7. Disconnect the negative end (-)of the
jumper cable from the negative (-)post of the
booster battery.
8. Disconnect the opposite end of the positive
(+) jumper cable from the positive (+)post of
the booster battery.
9. Disconnect the positive (+)end of the
jumper cable from the remote positive (+)post
of the discharged vehicle.
10. Reinstall the protective cover over the re-
mote positive (+)battery post of the discharged
vehicle.
If frequent jump-starting is required to start your
vehicle you should have the battery and charg-
ing system inspected at your authorized dealer.
CAUTION!
Accessories that can be plugged into the
vehicle power outlets draw power from the
vehicle’s battery, even when not in use (i.e.,
cellular phones, etc.). Eventually, if plugged in
long enough, the vehicle’s battery will dis-
charge sufficiently to degrade battery life
and/or prevent the engine from starting.
FREEING A STUCK VEHICLEIf the vehicle becomes stuck in snow, sand or
mud, it can often be moved by a rocking
motion. Move the shift lever rhythmically be-
tween DRIVE and REVERSE while applying
slight pressure to the accelerator. In general,
the least amount of accelerator pedal pressure
to maintain the rocking motion without spinning
the wheels or racing the engine is most effec-
tive.
289

CAUTION!
Racing the engine or spinning the wheels may
lead to transmission overheating and failure.
Allow the engine to idle with the shift lever in
NEUTRAL for at least one minute after every
five rocking-motion cycles. This will minimize
overheating and reduce the risk of transmis-
sion failure during prolonged efforts to free a
stuck vehicle.
CAUTION!
•When “rocking” a stuck vehicle by moving
between 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 overheat-
ing 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
generated 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 vehicle’s wheels faster than
30 mph (48 km/h) or for longer than 30 sec-
onds continuously without stopping when you
are stuck and do not let anyone near a
spinning wheel, no matter what the speed.
TOW EYESYour vehicle is equipped with tow eyes, which
are mounted in the front and the rear.
CAUTION!
Tow eyes are for emergency use only, to
rescue a vehicle stranded off road. Do not use
tow eyes for tow truck hookup or highway
towing. You could damage your vehicle. Tow
straps are recommended when towing the
vehicle; chains may cause vehicle damage.
WARNING!
Stand clear of vehicles when pulling with tow
eyes. Tow straps and chains may break, caus-
ing serious injury.
SHIFT LEVER OVERRIDEIf a malfunction occurs and the shift lever
cannot be moved out of the PARK position, you
can use the following procedure to temporarily
move the shift lever:
1. Firmly apply the parking brake.
2. Turn the engine OFF.
3. Remove the rubber liner from the cupholder
(located next to the shifter on the center con-
sole).
4. Using a screwdriver or similar tool, carefully
remove the shift lever override access cover,
located on the bottom of the cupholder.
290

5. Press and maintain firm pressure on the
brake pedal.6. Using the screwdriver or similar tool, press
and hold the shift lock lever down.
7. Move the shift lever to the NEUTRAL posi-
tion.
8. The vehicle may then be started in NEU-
TRAL.
9. Reinstall the shift lever override access
cover and install the rubber liner into the cup-
holder.
TOWING A DISABLED VEHICLEThis section describes procedures for towing a
disabled vehicle using a commercial wrecker
service. If the transmission and drivetrain are
operable, disabled vehicles may also be towedas described under “Recreational Towing” in
the “Starting And Operating” section.
NOTE:
Vehicles equipped with Quadra-Lift™ must
be lowered to the Park (lowest) level, and
have automatic leveling disabled, before ty-
ing them down (from the body) on a trailer or
flatbed truck. Refer to the section on
Quadra-Lift™ for more information. If the
vehicle cannot be lowered to the Park level
(for example, engine will not run), tie-downs
must be fastened to the axles (not to the
body). Failure to follow these instructions
may cause fault codes to be set and/or loss
of proper tie-down tension.
Shift Lever Override Access Cover
291

Towing ConditionWheels OFF the Ground 4WD Models
Flat Tow NONESee instructions in “Recreational Towing” under “Starting and Operating”
•
Transmission in PARK
• Transfer case in NEUTRAL
• To w i n forward direction
Wheel Lift or Dolly Tow Front
NOT ALLOWED
Rear NOT ALLOWED
Flatbed ALL BEST METHOD
Proper towing or lifting equipment is required to
prevent damage to your vehicle. Use only tow
bars and other equipment designed for the
purpose, following equipment manufacturer’s
instructions. Use of safety chains is mandatory.
Attach a tow bar or other towing device to main
structural members of the vehicle, not to bum-
pers or associated brackets. State and local
laws applying to vehicles under tow must be
observed. If you must use the accessories (wipers, de-
frosters, etc.) while being towed, the ignition
must be in the ON/RUN position, not the ACC
position.
If the vehicle’s battery is discharged, see
Brake/Transmission Interlock Manual Override
(under Starting and Operating, Automatic
Transmission) for instructions on shifting the
automatic transmission out of the PARK posi-
tion for towing.
CAUTION!
•
Do not attempt to use sling type equipment
when towing. When securing the vehicle to
a flat bed truck, do not attach to front or rear
suspension components. Damage to your
vehicle may result from improper towing.
• If the vehicle being towed requires steering,
the ignition must be in the ON/RUN or ACC
position, not in the LOCK/OFF position.
292

Towing Without The Ignition Key
Fob
Special care must be taken when the vehicle is
towed with the ignition in the LOCK/OFF posi-
tion. The only approved method of towing with-
out the ignition key is with a flatbed truck.
Proper towing equipment is necessary to pre-
vent damage to the vehicle.
Four-Wheel Drive VehiclesThe manufacturer recommends towing with all
wheelsOFFthe ground. Acceptable methods
are to tow the vehicle on a flatbed or with one
end of vehicle raised and the opposite end on
a towing dolly.
If flatbed equipment is not available, and the
transfer case is operable, the vehicle may be
towed (in the forward direction, with ALL
wheels on the ground), IFthe transfer case is in
NEUTRAL and the transmission is in PARK.
Refer to “Recreational Towing” in “Starting And
Operating” for detailed instructions.CAUTION!
• Front or rear wheel lifts should not be used.
Internal damage to the transmission or
transfer case will occur if a front or rear
wheel lift is used when towing.
• Failure to follow these towing methods can
cause severe damage to the transmission
and/or transfer case. Such damage is not
covered by the New Vehicle Limited War-
ranty.
293

294

7
MAINTAINING YOUR VEHICLE
•ENGINE COMPARTMENT — 3.6L ................. 298
• ENGINE COMPARTMENT — 5.7L ................. 299
• ENGINE COMPARTMENT – 3.0L DIESEL ............ 300
• ONBOARD DIAGNOSTIC SYSTEM – OBD II ........... 301
• Loose Fuel Filler Cap Message ................ 301
• REPLACEMENT PARTS ...................... 301
• MAINTENANCE PROCEDURES .................. 301
• Engine Oil – Gasoline Engines ................ 302
• Engine Oil – Diesel Engine .................. 303
• Synthetic Engine Oils ..................... 303
• Materials Added To Engine Oils ............... 304
• Disposing Of Used Engine Oil And Filters ......... 304
• Engine Oil Filter ......................... 304
• Engine Air Cleaner Filter .................... 304
• Maintenance-Free Battery ................... 304
• Air Conditioner Maintenance ................. 305
295

•Body Lubrication ........................ 305
• Windshield Wiper Blades ................... 306
• Adding Washer Fluid ...................... 307
• Exhaust System ......................... 307
• Cooling System ......................... 308
• Brake System .......................... 311
• Front/Rear Axle Fluid ...................... 312
• Transfer Case .......................... 313
• Automatic Transmission .................... 313
• Appearance Care And Protection From Corrosion ..... 315
• FUSES ................................ 318
• Totally Integrated Power Module ............... 318
• VEHICLE STORAGE ........................ 321
• REPLACEMENT BULBS ...................... 322
• BULB REPLACEMENT ....................... 322
• High Intensity Discharge Headlamps
(HID) – If Equipped ....................... 322
• Halogen Headlamps – If Equipped .............. 323
• Front Turn Signal ........................ 323
• Front Fog Lamps ........................ 323
• Rear Tail, Stop, and Turn Signal Lamps ........... 324
• Rear Liftgate Mounted Tail Lamp ............... 324
296