2010 JEEP GRAND CHEROKEE towing

WARNING! (Continued)
•Before using the ParkSenseRear Park Assist
System, it is strongly recommended that the ball
mount and hitch ball assembly is disconnected
from the vehicle when the vehicle is not used for
towing. Failure to do so can result in injury or
damage to vehicles or obstacles because the hitch
ball will be much closer to the obstacle than the
rear fascia when the warning display turns on the
single flashing arc and sounds the continuous
tone. Also, the ParkSense sensors could detect
the ball mount and hitch ball assembly, depending
on its size and shape, giving a false indication that
an obstacle is behind the vehicle.
PARKVIEW REAR BACK UP CAMERA — IF
EQUIPPED
Your vehicle may be equipped with the ParkView Rear
Back Up Camera that allows you to see an on-screen
image of the rear of your vehicle whenever the shift lever
is put into REVERSE. The image will be displayed on the
Navigation/Multimedia radio display screen. The Park-
View camera is located on the rear liftgate.
WARNING!
Drivers must be careful when backing up even when
using the ParkView Rear Back Up Camera. Always
check carefully behind your vehicle, and be sure to
check for pedestrians, animals, other vehicles, ob-
structions, or blind spots before backing up. You are
responsible for the safety of your surroundings and
must continue to pay attention while backing up.
Failure to do so can result in serious injury or death.
3
UNDERSTANDING THE FEATURES OF YOUR VEHICLE 125

•The grab handles on the back of the vehicle (if
equipped) are not to be used as a towing feature.
CAUTION!
•To prevent damage to the roof of your vehicle, DO
NOT carry any loads on the roof rack without the
crossbars installed. The load should be secured
and placed on top of the crossbars, not directly on
the roof. If it is necessary to place the load on the
roof, place a blanket or some other protection
between the load and the roof surface.
•To avoid damage to the roof rack and vehicle, do
not exceed the maximum roof rack load capacity of
150 lbs (68 kg). Always distribute heavy loads as
evenly as possible and secure the load appropri-
ately.(Continued)
CAUTION! (Continued)
•Long loads which extend over the windshield,
such as wood panels or surfboards, or loads with
large frontal area should be secured to both the
front and rear of the vehicle.
•Travel at reduced speeds and turn corners care-
fully when carrying large or heavy loads on the
roof rack. Wind forces, due to natural causes or
nearby truck traffic, can add sudden upward lift to
a load. This is especially true on large flat loads
and may result in damage to the cargo or your
vehicle.3
UNDERSTANDING THE FEATURES OF YOUR VEHICLE 151

the ON position before engine start. If the bulb does not
come on when turning the key from OFF to ON, have the
condition checked promptly.
Certain conditions such as a loose or missing gas cap,
poor fuel quality, etc., may illuminate the light after
engine start. The vehicle should be serviced if the light
stays on through several of your typical driving cycles. In
most situations, the vehicle will drive normally and will
not require towing.
CAUTION!
Prolonged driving with the MIL on could cause
damage to the engine control system. It also could
affect fuel economy and drivability. If the MIL is
flashing, severe catalytic converter damage and
power loss will soon occur. Immediate service is
required.
WARNING!
A malfunctioning catalytic converter, as referenced
above, can reach higher temperatures than in normal
operating conditions. This can cause a fire if you
drive slowly or park over flammable substances such
as dry plants or wood or cardboard, etc. This could
result in death or serious injury to the driver, occu-
pants or others.
6. Airbag Warning Light This light turns on and remains on for six to
eight seconds as a bulb check when the ignition
switch is first turned ON. If the light is not on
during starting, stays on, or turns on while
driving, have the system inspected by an authorized
dealer as soon as possible. Refer to “Occupant Restraints”
in “Things To Know Before Starting Your Vehicle” for
further information.
160 UNDERSTANDING YOUR INSTRUMENT PANEL

The gauge pointer will likely indicate a higher tempera-
ture when driving in hot weather, up mountain grades,
or when towing a trailer. It should not be allowed to
exceed the upper limits of the normal operating range.
CAUTION!
Driving with a hot engine cooling system could
damage your vehicle. If the temperature gauge reads
“H” 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 “H” and you hear continuous chimes,
turn the engine off immediately, and call an autho-
rized dealership for service.
WARNING!
A hot engine cooling system is dangerous. You or
others could be badly burned by steam or boiling
coolant. You may want to call an authorized dealer-
ship for service if your vehicle overheats. If you
decide to look under the hood yourself, see “Main-
taining Your Vehicle”. Follow the warnings under the
Cooling System Pressure Cap paragraph.
14. Electronic Vehicle Information Center (EVIC)
Display
When the appropriate conditions exist, this display
shows the Electronic Vehicle Information Center (EVIC)
messages. Refer to “Electronic Vehicle Information Cen-
ter”.
164 UNDERSTANDING YOUR INSTRUMENT PANEL

22. Fuel Gauge
The pointer shows the level of fuel in the fuel tank when
the ignition switch is in the ON position.
23. Electronic Throttle Control (ETC) Warning LightThis light informs you of a problem with the
Electronic Throttle Control (ETC) system. If a
problem is detected the light will come on
while the engine is running. Cycle the ignition
key when the vehicle has completely stopped and the
shift lever is placed in the PARK position. The light
should turn off. If the light remains lit with the engine
running, your vehicle will usually be drivable; however,
see your authorized dealer for service as soon as possible.
If the light is flashing when the engine is running,
immediate service is required and you may experience
reduced performance, an elevated/rough idle or engine
stall and your vehicle may require towing. The light will
come on when the ignition is first turned on and remain on briefly as a bulb check. If the light does not come on
during starting, have the system checked by an autho-
rized dealer.
24. Front Fog Light Indicator — If Equipped
This indicator will illuminate when the front fog
lights are on.
25. Charging System Light This light shows the status of the electrical charg-
ing system. The light should come on when the
ignition switch is first turned ON and remain on briefly
as a bulb check. If the light stays on or comes on while
driving, turn off some of the vehicle’s non-essential
electrical devices or increase engine speed (if at idle). If
the charging system light remains on, it means that the
vehicle is experiencing a problem with the charging
system. Obtain SERVICE IMMEDIATELY. See an autho-
rized dealer.
4
UNDERSTANDING YOUR INSTRUMENT PANEL 167

defrost/floor modes. Attempting to use Recirculation
while in these modes will cause the LED in the button to
blink and then turn off.
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 the air conditioning (pressing the snowflake
button) on 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 (cigarette
smoke, 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 the 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 Fluids, Lubri-
cants, and Genuine Parts in “Maintaining Your Vehicle”
for the proper coolant type.
When using the air conditioner in extremely heavy
traffic, in hot weather, especially when towing a trailer,
additional engine cooling may be required. If this situa-
tion is encountered, operate the transmission in a lower
gear to increase engine RPM, coolant flow and fan speed.4
UNDERSTANDING YOUR INSTRUMENT PANEL 231

▫General Information .................. 314
 Fuel Requirements ..................... 315
▫ 3.7 Engine ......................... 315
▫ 5.7L Engine ........................ 315
▫ Reformulated Gasoline ................ 316
▫ Gasoline/Oxygenate Blends ............. 316
▫ E-85 Usage In Non-Flex Fuel Vehicles ...... 316
▫ MMT In Gasoline .................... 317
▫ Materials Added To Fuel ............... 318
▫ Fuel System Cautions ................. 318
▫ Carbon Monoxide Warnings ............ 319
 Adding Fuel ......................... 320
▫ Fuel Filler Cap (Gas Cap) .............. 320 ▫
Loose Fuel Filler Cap Message ........... 321
 Vehicle Loading ...................... 322
▫ Certification Label ................... 322
 Trailer Towing ........................ 324
▫ Common Towing Definitions ............ 324
▫ Trailer Hitch Classification .............. 328
▫ Trailer Towing Weights
(Maximum Trailer Weight Ratings) ........ 330
▫ Trailer And Trailer Tongue Weight ........ 331
▫ Towing Requirements ................. 332
▫ Towing Tips ........................ 337
 Snow Plow .......................... 338
 Recreational Towing
(Behind Motorhome, Etc.) ................ 338
238 STARTING AND OPERATING

▫Towing – Two-Wheel Drive Models ....... 338
▫ Towing — Quadra-Trac I (Single-Speed
Transfer Case) Four-Wheel Drive Models . . . 339 ▫
Towing — Quadra–Trac II /Quadra–Drive
II Four-Wheel Drive Models ............. 339
5
STARTING AND OPERATING 239