JEEP GRAND CHEROKEE 2010 WK / 3.G SRT Owners Manual

NOTE:Regardless of the type of operation, when a
temperature knob is set to the full clockwise or full
counterclockwise position, the system will deliver full
hot or full cold air out of the ducts, respectively.
The operator can override the AUTO mode setting and
select the direction of the air by rotating the right mode
knob to one of the following positions. When the Mode is
set to any position other than AUTO, the automatic
control of air temperature is disabled. The user must
adjust the temperature knobs to obtain the desired tem-
perature.
Defrost Air is directed to the windshield through the
outlets at the base of the windshield. Air is also
directed to the front door windows through the side
window demister grilles. Some airflow is delivered to the
floor while in defrost so that comfort can be maintained. NOTE:
The defrost mode is not automatically selected.
It must be manually selected, when desired.
Defrost/Floor Air flows through the front and rear floor outlets
and the outlets at the base of the windshield. Air is
also directed to the front door windows through the
side window demister grilles. Some airflow is delivered
to the floor while in defrost so that comfort can be
maintained.
Floor Air flows through the floor outlets located under
the instrument panel and into the rear seating area
through vents under the front seats. Some airflow is
delivered to defrost while in floor mode, so that comfort
can be maintained.
230 UNDERSTANDING YOUR INSTRUMENT PANEL

Bi-LevelAir flows both through the outlets located in the
instrument panel and those located on the floor. Air
flows through the registers in the back of the center
console, and under the front seats to the rear seat
passengers. These registers can be closed to block airflow.
The center console outlets deliver conditioned air while
the floor outlets deliver heated air.
Panel Air flows through the outlets located in the instru-
ment panel. Air flows through the registers in the
back of the center console to the rear seat passengers.
These registers can be closed to block airflow.
Air Conditioning Press this button to turn the air conditioning on
and off during manual operation only. Condi-
tioned outside air is then directed through the outlets selected on the mode control dial. The button
includes an LED that illuminates when manual operation
is selected.
NOTE:
To manually control the air conditioning, the
mode selector must be moved out of the AUTO position.
Recirculation This button can be used to block out smoke,
odors, dust, high humidity, or if rapid cooling
is desired. The “Recirculation” mode should
only be used temporarily. The button includes
an LED that illuminates, which indicates that the “Recir-
culation” mode is active. You may use this feature
separately.
NOTE: Extended use of recirculation may cause the
windows to fog. If the interior of the windows begins to
fog, press the “Recirculate” button to return to outside
air. Some temperature/humidity conditions will cause
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UNDERSTANDING YOUR INSTRUMENT PANEL 231

captured interior air to condense on windows and ham-
per visibility. For this reason, the system will not allow
“Recirculation” mode to be selected while in the defrost
or 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. Higherblower 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 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,
232 UNDERSTANDING YOUR INSTRUMENT PANEL

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.
When stopped in heavy traffic, it may be necessary to
shift into NEUTRAL (N) and press the accelerator
slightly for fast idle operation to increase coolant flow
and fan speed.
Your air conditioning system is also equipped with an
automatic recirculation system. When the system senses
a heavy load or high heat conditions, it may use partial
Recirculation A/C mode to provide additional comfort.
Winter Operation
When operating the system during the winter months,
make sure the air intake, located directly in front of the
windshield, is free of ice, slush, snow, or other
obstructions.
Vacation Storage
Anytime you store your vehicle, or keep it out of service
(i.e. vacation) for two weeks or more, run the air condi-
tioning system at idle for about five minutes in the fresh
air and high blower setting. This will ensure adequate
system lubrication to minimize the possibility of com-
pressor damage when the system is started again.
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UNDERSTANDING YOUR INSTRUMENT PANEL 233

Operating Tips Chart
234 UNDERSTANDING YOUR INSTRUMENT PANEL

STARTING AND OPERATING
CONTENTS
Starting Procedures .................... 238
▫ Normal Starting ..................... 238
▫ Extreme Cold Weather
(Below 20°F Or 29°C)............... 239
▫ If Engine Fails To Start ................ 239
▫ After Starting ....................... 240
 Automatic Transmission ................. 240
▫ Key Ignition Park Interlock ............. 241
▫ Brake/Transmission Shift Interlock System . . 241 ▫
Brake/Transmission Interlock Manual
Override .......................... 241
▫ Five–Speed Automatic Transmission ....... 242
▫ Gear Ranges ........................ 243
▫ Rocking The Vehicle .................. 244
 AutoStick .......................... 245
▫ Operation ......................... 246
▫ General Information .................. 247
 Power Steering ....................... 248
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▫Power Steering Fluid Check ............. 249
 Parking Brake ........................ 250
 Anti-Lock Brake System ................. 252
 Electronic Brake Control System ........... 255
▫ Anti-Lock Brake System (ABS) ........... 255
▫ Traction Control System (TCS) ........... 255
▫ Brake Assist System (BAS) .............. 256
▫ Electronic Roll Mitigation (ERM) ......... 257
▫ Electronic Stability Program (ESP) ........ 257
▫ Trailer Sway Control (TSC) ............. 260
▫ ESP/BAS Warning Light And ESP/TCS
Indicator Light ...................... 260
 Tire Safety Information ................. 262 ▫
Tire Markings ....................... 262
▫ Tire Identification Number (TIN) ......... 266
▫ Tire Terminology And Definitions ......... 267
▫ Tire Loading And Tire Pressure .......... 268
 Tires — General Information ............. 272
▫ Run Flat Tires ....................... 272
▫ Tire Pressure ....................... 272
▫ Tire Inflation Pressures ................ 274
▫ Tire Pressures For High Speed Operation . . . 275
▫ Radial-Ply Tires ..................... 275
▫ Tire Spinning ....................... 276
▫ Tread Wear Indicators ................. 276
▫ Life Of Tire ........................ 277
236 STARTING AND OPERATING

▫Replacement Tires .................... 277
 Tire Rotation Recommendations ........... 278
 Tire Pressure Monitor System (TPMS) ....... 279
▫ Premium System .................... 279
▫ General Information .................. 282
 Fuel Requirements ..................... 282
▫ 6.1L Engine ........................ 282
▫ Reformulated Gasoline ................ 283
▫ Gasoline/Oxygenate Blends ............. 283
▫ E85 Usage In Non-Flex Fuel Vehicles ...... 284
▫ MMT In Gasoline .................... 284
▫ Materials Added To Fuel ............... 285
▫ Fuel System Cautions ................. 285 ▫
Carbon Monoxide Warnings ............ 286
 Adding Fuel ......................... 287
▫ Fuel Filler Cap (Gas Cap) .............. 287
▫ Loose Fuel Filler Cap Message ........... 288
 Trailer Towing ........................ 289
▫ Common Towing Definitions ............ 289
▫ Trailer Hitch Classification .............. 292
▫ Trailer Towing Weights
(Maximum Trailer Weight Ratings) ........ 293
▫ Trailer And Trailer Tongue Weight ........ 293
▫ Towing Requirements ................. 295
▫ Towing Tips ........................ 298
 Recreational Towing
(Behind Motorhome, Etc.) ................ 299
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STARTING AND OPERATING 237

STARTING PROCEDURES
Before starting your vehicle, adjust your seat, adjust the
inside and outside mirrors, fasten your seat belt, and if
present, instruct all other occupants to buckle their seat
belts.
WARNING!
•Never leave children alone in a vehicle. Leaving
unattended children in a vehicle is dangerous for a
number of reasons. A child or others could be
seriously or fatally injured. Do not leave the key
fob in the ignition switch. A child could operate
power windows, other controls, or move the ve-
hicle.
•Do not leave animals or children inside parked
vehicles in hot weather; interior heat buildup may
cause serious injury or death.
Normal Starting
Tip Start
NOTE:Normal starting of either a cold or a warm
engine is obtained without pumping or pressing the
accelerator pedal.
Do not press the accelerator. Use the Fob with Integrated
Key to briefly turn the ignition switch to the START
position and release it as soon as the starter engages. The
starter motor will continue to run, and it will disengage
automatically when the engine is running. If the engine
fails to start, the starter will disengage automatically in
10 seconds. If this occurs, turn the ignition switch to the
LOCK position, wait 10 to 15 seconds, then repeat the
“Normal Starting” procedure.
238 STARTING AND OPERATING

Extreme Cold Weather (Below20°F or29°C)
To ensure reliable starting at these temperatures, use of
an externally powered electric engine block heater (avail-
able from your authorized dealer) is recommended.
If Engine Fails To Start
WARNING!
•Never pour fuel or other flammable liquids into
the throttle body air inlet opening in an attempt to
start the vehicle. This could result in a flash fire
causing serious personal injury.
(Continued)
WARNING! (Continued)
•Do not attempt to push or tow your vehicle to get
it started. Vehicles equipped with an automatic
transmission cannot be started this way. Unburned
fuel could enter the catalytic converter and once
the engine has started, ignite and damage the
converter and vehicle. If the vehicle has a dis-
charged 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 dan-
gerous if done improperly. Refer to “Jump Start-
ing” in “What to Do In Emergencies” for further
information.
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STARTING AND OPERATING 239