2007 JEEP GRAND CHEROKEE overheating

NOTE:To program the remaining two HomeLink but-
tons, begin with9Programming9step two. Do not repeat
step one. For questions or comments, please contact
HomeLink atwww.homelink.com or 1-800-355-3515.
Canadian Programming/Gate Programming
Canadian radio-frequency laws require transmitter sig-
nals to9time-out9(or quit) after several seconds of
transmission which may not be long enough for
HomeLink to pick up the signal during programming.
Similar to this Canadian law, some U.S. gate operators are
designed to9time-out9in the same manner.
If you live in Canada or you are having difficulties
programming a gate operator by using the9Program-
ming9procedures (regardless of where you live),replace
(Programming HomeLink(step 3with the following:
NOTE:If programming a garage door opener or gate
operator, it is advised to unplug the device during the
9cycling9process to prevent possible overheating.3. Continue to press and hold the HomeLink button
while youpress and release every two seconds(9cycle9)
your hand-held transmitter until the frequency signal has
successfully been accepted by HomeLink. The EVIC
display will show ªCHANNEL X TRAINEDº (where X is
Channel 1, 2, or 3). Proceed with9Programming9step
four to complete.
Using HomeLink
To operate, simply press and release the programmed
HomeLink button. Activation will now occur for the
trained device (i.e. garage door opener, gate operator,
security system, entry door lock, home/office lighting,
etc.). For convenience, the hand-held transmitter of the
device may also be used at any time. In the event that
there are still programming difficulties or questions,
contact HomeLink at:www.homelink.com or 1-800-355-
3515.
150 UNDERSTANDING THE FEATURES OF YOUR VEHICLE

Operating Tips
Window Fogging
Windows will fog on the inside when the humidity inside
the vehicle is high. This often occurs in mild or cool
temperatures when it's rainy or humid. In most cases
turning on the Air-conditioning (pressing the snowflake
button) will clear the fog. Adjust the temperature control,
air direction and blower speed to maintain comfort.
As the temperature gets colder it may be necessary to
direct air onto the windshield. Adjust the temperature
control and blower speed to maintain comfort. Higher
blower speeds will reduce fogging. Interior fogging on
the windshield can be quickly removed by selecting the
defrost mode.
Regular cleaning of the inside of the windows with a
non-filming cleaning solution (vinegar and water works
very well) will help prevent contaminates (cigarettesmoke, perfumes, etc.) from sticking to the windows.
Contaminates increase the rate of window fogging.Summer Operation
Air conditioned vehicles must be protected with a high
quality antifreeze coolant during summer to provide
proper corrosion protection and to raise the boiling point
of the coolant for protection against overheating. A 50 %
concentration is recommended. Refer to Recommended
Fluids and Genuine Parts for the proper coolant type.
When using the air conditioner in extremely heavy traffic
in hot weather especially when towing a trailer, addi-
tional engine cooling may be required. If this situation is
encountered, operate the transmission in a lower gear to
increase engine RPM, coolant flow and fan speed. When
stopped in heavy traffic, it may be necessary to shift into
N (Neutral) and depress the accelerator slightly for fast
idle operation to increase coolant flow and fan speed.
228 UNDERSTANDING YOUR INSTRUMENT PANEL

Rocking the Vehicle
If the vehicle becomes stuck in snow, sand, or mud, it can
often be moved by a rocking motion. Move the gear
selector rhythmically between D (Drive) and R (Reverse),
while applying slight pressure to the accelerator.
NOTE:The Electronic Stability Program (ESP) and
Traction Control (if equipped) should be turned OFF
before attempting to rock the vehicle. Refer to ªElectronic
Brake Control Systemº in Section 3 of this manual.
The least amount of accelerator pedal pressure to main-
tain the rocking motion without spinning the wheels or
racing the engine is most effective. Racing the engine or
spinning the wheels, due to the frustration of not freeing
the vehicle, may lead to transmission overheating and
failure. Allow the engine to idle with the transmission
selector in N (Neutral) for at least one minute after everyfive rocking-motion cycles. This will minimize overheat-
ing and reduce the risk of transmission failure during
prolonged efforts to free a stuck vehicle.
CAUTION!
When ªrockingº a stuck vehicle by moving between
ªFirstº and R (Reverse), do not spin the wheels faster
than 15 mph (24 km/h), or drivetrain damage may
result.
AUTOSTICK
Autostick is a driver-interactive transmission that offers
manual gear shifting capability to provide the driver
with more control. Autostick allows the driver to increase
engine braking ability, control upshift and downshift
points, and enhance the driving experience. This system
STARTING AND OPERATING 241
5

IF YOUR ENGINE OVERHEATS
In any of the following situations, you can reduce the
potential for overheating by taking the appropriate ac-
tion.
²On the highways Ð Slow down.
²In city traffic Ð While stopped, put transmission in N
(Neutral), but do not increase engine idle speed.
NOTE:There are steps that you can take to slow down
an impending overheat condition. If your air conditioner
is on, turn it off. The air conditioning system adds heat to
the engine cooling system and turning off the A/C
removes this heat. You can also turn the Temperature
Control to maximum heat, the Mode Control to floor, and
the Fan Control to High. This allows the heater core to act
as a supplement to the radiator and aids in removing heat
from the engine cooling system.
CAUTION!
Driving with a hot cooling system could damage
your vehicle. If the temperature gauge reads ªHº,
pull over and stop the vehicle. Idle the vehicle with
the air conditioner turned off until the pointer drops
back into the normal range. If the pointer remains on
the ªHº, and you hear continuous chimes, turn the
engine off immediately, and call for service.
JUMP STARTING
If the vehicle has a discharged battery, booster cables may
be used to obtain a start from a booster battery or the
battery in another vehicle. This type of start can be
dangerous if done improperly, so follow this procedure
carefully.
WHAT TO DO IN EMERGENCIES 293
6

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 involv-
ing engine misfire or other apparent loss of perfor-
mance, have your vehicle serviced promptly. Contin-
ued operation of your vehicle with a severe
malfunction could cause the converter to overheat,
resulting in possible damage to the converter and the
vehicle.
NOTE:Intentional tampering with emissions control
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 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 indicate severe
and abnormal catalyst overheating. If this occurs, the
vehicle should be stopped, the engine shut off and the
vehicle allowed to cool. Thereafter, service, including a
tune-up to manufacturer's specifications, should be ob-
tained immediately.
MAINTAINING YOUR VEHICLE 311
7

Oil Change Interval.................... 306
Oil Selection.......................307,346
Overheating.......................... 293
Starting............................. 234
Temperature Gauge..................... 175
Engine Oil Viscosity...................... 308
Engine Oil Viscosity Chart................. 308
Enhanced Accident Response Feature.......... 51
Entry System, Illuminated.................. 19
Event Data Recorder...................... 52
Exhaust Gas Caution................65,273,318
Exhaust System......................... 317
Exterior Finish Care...................... 330
Filters
Air Cleaner.......................... 310
Engine Fuel.......................... 310
Engine Oil........................... 308
Engine Oil Disposal.................... 308Finish Care............................ 330
Flashers.............................. 292
Hazard Warning....................... 292
Turn Signal.....................172,342,344
Flipper Glass, Liftgate..................... 33
Flooded Engine Starting................... 235
Fluid Capacities......................... 346
Fluid Leaks............................. 67
Fluid Level Checks
Brake............................... 325
Cooling System....................... 318
Engine Oil........................... 305
Power Steering........................ 314
Fluids, Lubricants and Genuine Parts.......... 347
Fog Light Service........................ 343
Fog Lights....................... 118,178,343
Folding Rear Seat........................ 105
Four-Way Hazard Flasher.................. 292
Freeing A Stuck Vehicle................... 241
382 INDEX

Opener, Garage Door (HomeLinkt) ........... 145
Outside Rearview Mirrors.................. 75
Overhead Console....................... 144
Overheating, Engine...................176,293
Owner's Manual (Operator Manual).......... 374
Paint Care............................. 329
Paint Damage.......................... 329
Panic Alarm............................ 22
Park Assist System, Rear.................. 137
Parking Brake.......................... 244
Passing Light........................... 119
Pedals, Adjustable....................... 126
Pets.................................. 64
Pets, Transporting........................ 64
Phone, Cellular.......................... 78
Phone, Hands-Free (UConnectŸ)............. 78
Placard, Tire and Loading Information......... 254
Polishing and Waxing..................... 330Power
Distribution Center (Fuses)............... 336
Door Locks........................... 26
Mirrors.............................. 76
Outlet (Auxiliary Electrical Outlet).......... 155
Seats............................102,103
Steering..........................248,314
Sunroof............................. 152
Windows............................. 29
Pregnant Women and Seat Belts.............. 42
Pretensioners
Seat Belts............................. 41
Programmable Electronic Features......147,151,181
Programming Transmitters
(Remote Keyless Entry).................147,151
Radial Ply Tires......................... 262
Radiator Cap (Coolant Pressure Cap).......... 321
Radio Broadcast Signals................... 194
388 INDEX