2012 JEEP GRAND CHEROKEE stop start

Towing Requirements – Tires
Proper tire inflation pressures are essential tothe safe and satisfactory operation of your
vehicle. Refer to “Tires – General Informa-
tion” in “Starting and Operating” for proper
tire inflation procedures.
Check the trailer tires for proper tire inflation pressures before trailer usage.
Check for signs of tire wear or visible tire damage before towing a trailer. Refer to
“Tires – General Information” in “Starting and
Operating” for proper inspection procedure.
When replacing tires, refer to “Tires – Gen- eral Information” in “Starting and Operating”
for proper tire replacement procedures. Re-
placing tires with a higher load carrying
capacity will not increase the vehicle’s
GVWR and GAWR limits.
Towing Requirements – Trailer Brakes
Do notinterconnect the hydraulic brake sys-
tem or vacuum system of your vehicle with
that of the trailer. This could cause inad-
equate braking and possible personal injury. An electronically-actuated trailer brake con-
troller is required when towing a trailer with
electronically-actuated brakes. When towing
a trailer equipped with a hydraulic surge-
actuated brake system, an electronic brake
controller is not required.
Trailer brakes are recommended for trailers over 1,000 lbs (454 kg), and required for
trailers in excess of 1,654 lbs (750 kg).
WARNING!
• Do not connect trailer brakes to your vehi-
cle’s hydraulic brake lines. It can overload
your brake system and cause it to fail. You
might not have brakes when you need
them and could have an accident.
• Towing any trailer will increase your stop-
ping distance. When towing, you should
allow for additional space between your
vehicle and the vehicle in front of you.
Failure to do so could result in an accident. Towing Requirements – Trailer Lights And
Wiring
Whenever you pull a trailer, regardless of the
trailer size, stop lights and turn signals on the
trailer are required for motoring safety.
The Trailer Tow Package includes a 13 pin
wiring harness. Use a factory approved trailer
harness and connector.
NOTE:
Do not cut or splice wiring into the vehicles
wiring harness.
The electrical connections are all complete to
the vehicle but you must mate the harness to a
trailer connector.
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1. Bring the vehicle to a complete stop and
shift the transmission to PARK.
2. Turn the engine OFF.
3. For vehicles with Keyless Enter-N-Go, re-
move the Keyless Enter-N-Go button and use
the key fob to complete this procedure. Refer to
“Starting Procedures/Keyless Enter-N-Go” in
“Starting and Operating” for further information.
4. Turn the ignition switch to the ON/RUN po-
sition, but do not start the engine.
5. Press and hold the brake pedal.
6. Shift the transmission into NEUTRAL.
7. Using the point of a ballpoint pen or similar
object, press and hold the recessed transfer
case NEUTRAL (N) button (located by the
selector switch) for four seconds, until the light
behind the N symbol starts to blink, indicating
shift in progress. The light will stop blinking
(stay on solid) when the shift to NEUTRAL (N) is
complete.8. After the shift is completed and the NEU-
TRAL (N) light stays on, release the NEUTRAL
(N) button.
9. Start the engine.
10. Shift the transmission into REVERSE.
11. Release the brake pedal for five seconds
and ensure that there is no vehicle movement.
12. Turn the engine OFF, then turn the ignition
switch back to the ON/RUN position without
starting the engine.
13. Firmly apply the parking brake.14. Shift the transmission into PARK.
CAUTION!
Damage to the transmission may occur if the
transmission is shifted into PARK with the
transfer case in NEUTRAL (N) and the engine
running. With the transfer case in NEUTRAL
(N) ensure that the engine is off prior to
shifting the transmission into PARK.
15. Attach the vehicle to the tow vehicle using
a suitable tow bar.
16. Release the parking brake.
17. Disconnect the negative battery cable, and
secure it away from the negative battery post.
NOTE:
• Steps 1 through 6 are requirements that
must be met prior to pressing the NEU-
TRAL (N) button, and must continue to be
met until the four seconds elapse and the
shift has been completed. If any of these
requirements are not met prior to press-
ing the NEUTRAL (N) button or are no
longer met during the four second timer,
NEUTRAL (N) Switch
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then the NEUTRAL (N) indicator light will
flash continuously until all requirements
are met or until the NEUTRAL (N) button is
released.
• The ignition switch must be in the ON/
RUN position for a shift to take place and
for the position indicator lights to be op-
erable. If the ignition switch is not in the
ON/RUN position, the shift will not take
place and no position indicator lights will
be on or flashing.
• A flashing NEUTRAL (N) position indica-
tor light indicates that shift requirements
have not been met.
Shifting Out Of NEUTRAL (N)
Use the following procedure to prepare your
vehicle for normal usage.
1. Bring the vehicle to a complete stop, leaving
it connected to the tow vehicle.
2. Firmly apply the parking brake.
3. Reconnect the negative battery cable. 4. Turn the ignition switch to the LOCK/OFF
position.
5. Turn the ignition switch to the ON/RUN po-
sition, but do not start the engine.
6. Press and hold the brake pedal.
7. Shift the transmission into NEUTRAL.
8. Using the point of a ballpoint pen or similar
object, press and hold the recessed transfer
case NEUTRAL (N) button (located by the
selector switch) for one second.
NOTE:
When shifting out of transfer case NEUTRAL
(N), turning the engine OFF may be required
to avoid gear clash.
9. After the NEUTRAL (N) indicator light turns
off, release the NEUTRAL (N) button.
10. After the NEUTRAL (N) button has been
released, the transfer case will shift to the
position indicated by the selector switch.
11. Shift the transmission into PARK.
12. Release the brake pedal.
13. Disconnect vehicle from the tow vehicle.
14. Start the engine.
NEUTRAL (N) Switch
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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
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CAUTION!
•It is essential when replacing the cables on
the battery that the positive cable is at-
tached to the positive post, and the nega-
tive cable is attached to the negative post.
Battery posts are marked (+) positive and
(-) negative and identified on the battery
case.
• If a “fast charger” is used while battery is in
the vehicle, disconnect both vehicle battery
cables before connecting the charger to the
battery. Do not use a “fast charger” to
provide starting voltage.
Air Conditioner MaintenanceFor best possible performance, your air condi-
tioner should be checked and serviced by an
authorized dealer at the start of each warm
season. This service should include cleaning of
the condenser fins and a performance test.
Drive belt condition should also be checked at
this time.
CAUTION!
Do not use chemical flushes in your air con-
ditioning system as the chemicals can dam-
age your air conditioning components. Such
damage is not covered by the New Vehicle
Limited Warranty.
WARNING!
•Use only refrigerants and compressor lubri-
cants approved by the manufacturer for
your air conditioning system. Some unap-
proved refrigerants are flammable and can
explode, injuring you. Other unapproved
refrigerants or lubricants can cause the
system to fail, requiring costly repairs.
• The air conditioning system contains refrig-
erant under high pressure. To avoid risk of
personal injury or damage to the system,
adding refrigerant or any repair requiring
lines to be disconnected should be done by
an experienced repairman. NOTE:
Use only manufacturer approved A/C Sys-
tem Sealers, Stop Leak Products, Seal Con-
ditioners, Compressor Oil, and Refrigerants.
Refrigerant Recovery And Recycling
R-134a Air Conditioning Refrigerant is a hydro-
fluorocarbon (HFC) that is endorsed by the
Environmental Protection Agency (EPA) and is
an ozone-saving product. However, the manu-
facturer recommends that air conditioning ser-
vice be performed by authorized dealers or
other service facilities using recovery and recy-
cling equipment.
Body LubricationLocks and all body pivot points, including such
items as seat tracks, door hinge pivot points
and rollers, liftgate, tailgate, sliding doors and
hood hinges, should be lubricated periodically
with a lithium based grease, such as MOPAR
Spray White Lube or equivalent to assure quiet,
easy operation and to protect against rust and
wear. Prior to the application of any lubricant,
the parts concerned should be wiped clean to
remove dust and grit; after lubricating excess
oil and grease should be removed. Particular
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CAUTION!
Damage to the catalytic converter can result if
your vehicle is not kept in proper operating
condition. In the event of engine malfunction,
particularly involving engine misfire or other
apparent loss of performance, have your ve-
hicle serviced promptly. Continued operation
of your vehicle with a severe malfunction
could cause the converter to overheat, result-
ing in possible damage to the converter and
vehicle.
NOTE:
Intentional tampering with emissions con-
trol systems can result in civil penalties
being assessed against you.WARNING!
A hot exhaust system can start a fire if you
park over materials that can burn. Such ma-
terials might be grass or leaves coming into
contact with your exhaust system. Do not park
or operate your vehicle in areas where your
exhaust system can contact anything that can
burn.
In unusual situations involving grossly malfunc-
tioning engine operation, a scorching odor may
suggest severe and abnormal catalyst over-
heating. If this occurs, stop the vehicle, turn off
the engine and allow it to cool. Service, includ-
ing a tuneup to manufacturer’s specifications,
should be obtained immediately.
To minimize the possibility of catalytic converter
damage:
• 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, or for prolonged
periods during very rough idle or malfunc-
tioning operating conditions.
Cooling System
WARNING!
You or others can be badly burned by hot
engine coolant (antifreeze) or steam from
your radiator. If you see or hear steam coming
from under the hood, do not open the hood
until the radiator has had time to cool. Never
try to open a cooling system pressure cap
when the radiator or coolant bottle is hot.
Engine Coolant Checks
Check the engine coolant (antifreeze) protec-
tion every 12 months (before the onset of
freezing weather, where applicable). If the en-
gine coolant (antifreeze) is dirty or rusty in
appearance, the system should be drained,
flushed and refilled with fresh engine coolant
(antifreeze). Check the front of the A/C con-
denser for any accumulation of bugs, leaves,
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Cavity Car-tridgeFuse Mini
Fuse Description
J01 40 Amp Green Air Suspension
J02 30 Amp Pink Power Liftgate
Module
J03 30 Amp Pink Trailer Tow
J04 25 Amp Natural Driver Door
Node
J05 25 Amp Natural Passenger Door
Node
J06 40 Amp Green Antilock Brakes
Pump/Stability
Control System
J07 30 Amp Pink Antilock Brakes
Valve/Stability
Control System
J08 40 Amp Green Power Seat
J09 30 Amp Pink E-Brake
J10 30 Amp Pink Headlamp Wash
Relay ContactCavity Car-
tridgeFuse Mini
Fuse Description
J11 30 Amp Pink Drive Train Con-
trol Module
J12 30 Amp Pink Rear Defroster
J13 60 Amp Yellow Main Ignition Off
Draw (IOD)
J14 20 Amp Blue Trailer Tow
Lamps/Park
Lamps
J15 40 Amp Green Front Cabin Fan/
Blower
J17 40 Amp Green Starter Motor
Solenoid
J18 20 Amp Blue Powertrain Con-
trol Module/
Powertrain Con-
trol Module
Transmission
RangeCavity Car-
tridgeFuse Mini
Fuse Description
J19 60 Amp Yellow Radiator Fan
Motor HI/
Radiator Fan
Motor Low
J20 30 Amp Pink Front Wiper
J21 20 Amp Blue Front/Rear
Washer Control
J22 25 Amp Natural Sunroof Module
M1 15 Amp
Blue Stop Lamps
M2 20 Amp
Yellow Electronic Limit
Slip Differential/
Air Suspension
M3 20 Amp
Yellow Liftgate/Headrest
M5 25 Amp
Natural 115V AC Power
Inverter
M6 20 Amp
Yellow Cigar Lighter
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•Anytime you store your vehicle, or keep it out
of service (i.e. vacation) for two weeks or
more, run the air conditioning system at idle
for about five minutes in the fresh air and
high blower setting. This will ensure ad-
equate system lubrication to minimize the
possibility of compressor damage when the
system is started again.
REPLACEMENT BULBS
Interior Lights Bulb Type
Glove Box Lamp ..............194
Grab Handle Lamp .......L002825W5W
Overhead Console Reading Lamps . . VT4976
Rear Cargo Lamp ............ 214–2
Visor Vanity Lamp ...........V26377
Underpanel Courtesy Lamps ........906
Instrument Cluster
(General Illumination) ............103
Telltale/Hazard Lamp .............74 Exterior Lights
Bulb Type
Headlamps (Low/High Beam) – High
Intensity Discharge (HID) .........D1S
(Serviced at Authorized Dealer)
Daytime Running Lamp (DRL) /
Front Position ........3157K (P27/7WK)
Front Turn Signal Lamp . . . 7440NA(WY21W)
Front Fog Lamps ........... PSX24W
Front Side Marker .............W5W
Rear Turn Signal Lamps . . 7440NA (WY21W)
Auxiliary Liftgate Tail Lamps .......W3W
Liftgate Backup Lamps ......921(W16W)
Rear License Lamps ...........W5W
Rear Stop/Tail Lamps .....3157 (P27/7W)
Rear Fog Lamps .........7440 (W21W)
WARNING!
A transient high voltage occurs at the bulb
sockets of High Intensity Discharge (HID)
headlamps when the headlamp switch is
turned ON. It may cause serious electrical
shock or electrocution if not serviced properly.
See your authorized dealer for service. NOTE:
Numbers refer to commercial bulb types
that can be purchased from your authorized
dealer.
If a bulb needs to be replaced, visit your
authorized dealer or refer to the applicable
Service Manual.
BULB REPLACEMENT
High Intensity Discharge Headlamps
(HID) – If Equipped
The headlamps are a type of high voltage
discharge tube. High voltage can remain in the
circuit even with the headlamp switch off and
the key removed.
Because of this, you should
not attempt to service a headlamp bulb your-
self. If a headlamp bulb fails, take your
vehicle to an authorized dealer for service.
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