JEEP WRANGLER 2010 JK / 3.G Owners Manual

The instrument panel features four airflow registers. Two
registers are located on the outer ends of the instrument
panel and two are located in the center of the instrument
panel. These registers can be closed to partially block
airflow, and they can be adjusted to direct airflow where
the occupant desires.
Mode Control
The mode control allows you
to choose from several pat-
terns of air distribution as
identified by the symbols.Panel
Air is directed through the outlets in the instrument
panel. These outlets can be adjusted to direct airflow.
Bi-Level Air is directed through the panel and floor outlets.
NOTE: There is a difference in temperature between the
upper and lower outlets for added comfort. The warmer
air goes to the floor outlets. This feature gives improved
comfort during sunny but cool conditions.
Floor Air is directed through the floor outlets and side
window demist outlets with a small amount
through the defrost outlet.
320 UNDERSTANDING YOUR INSTRUMENT PANEL

MixAir is directed through the floor, defrost and side
window demist outlets. This setting works best in
cold or snowy conditions that require extra heat at
the windshield. This setting is good for maintaining
comfort while reducing moisture on the windshield.
Defrost Air is directed through the windshield and side
window demist outlets. Use this mode with maxi-
mum fan and temperature settings for best windshield
and side window defrosting.
NOTE: The air conditioning compressor operates in
both Mix and Defrost even if the fan switch is not in the
A/C position. This dehumidifies the air to help dry the
windshield. To improve fuel economy, use these modes
only when necessary.Blower Control
Use this control to regulate the
amount of air forced through the
system in any mode you select.
The fan speed increases as you
move the control to the right from
the OFF position.
Temperature Control
Use this control to regulate the
temperature of the air inside the
passenger compartment. The blue
area of the scale indicates cooler
temperatures while the red area
indicates warmer temperatures.
4
UNDERSTANDING YOUR INSTRUMENT PANEL 321

NOTE:If your air conditioning performance seems
lower than expected, check the front of the A/C con-
denser: located in front of the radiator, for an accumula-
tion of dirt or insects. Clean with a gentle water spray
from behind the radiator and through the condenser.
Fabric front fascia protectors may reduce air flow to the
condenser, reducing air conditioning performance.
Recirculation Control
Press this button to choose be-
tween outside air intake or recir-
culation of the air inside the ve-
hicle. A light will illuminate when
you are in “Recirculation” mode.
Only use the “Recirculation”
mode to temporarily block out
any outside odors, smoke, or dust
and to cool the interior rapidly
upon initial start up in very hot or humid weather. NOTE:
Continuous use of the “Recirculation” mode
may make the inside air stuffy and window fogging may
occur. Extended use of this mode is not recommended.
In cold or damp weather, the use of the “Recirculation”
mode will cause windows to fog on the inside because of
moisture buildup inside the vehicle. For maximum de-
fogging, select the Outside Air position.
NOTE: The “Recirculation” mode will not operate in the
floor, mix or defrost modes.
322 UNDERSTANDING YOUR INSTRUMENT PANEL

Air Conditioning
Normal Operation
Press this button to engage the air
conditioning. A light will illumi-
nate when the air conditioning
system is engaged. Once the air
conditioning is engaged, use a
combination of the mode control,
fan speed control, and tempera-
ture control to achieve your de-
sired interior temperature.
NOTE: The air conditioning compressor will not engage
until the engine has been running for about 10 seconds.
MAX A/C
For maximum cooling, select ei-
ther the Panel or Bi-Level position
using the mode control. Then,
press the “A/C” and the “Recir-
culation” buttons so that both
lights are illuminated, and set the
temperature control to its coolest
setting.
NOTE:
•Recirculation Mode will not operate in floor, mix or
defrost modes.
•Refer to “Recirculation Control” in this section, for
proper or extended use of this position.
4
UNDERSTANDING YOUR INSTRUMENT PANEL 323

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 (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 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 and
Genuine Parts in “Maintaining Your Vehicle” for the
proper coolant type.
324 UNDERSTANDING YOUR INSTRUMENT PANEL

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
NEUTRAL (N) and press the accelerator slightly for fast
idle operation to increase coolant flow and fan speed.
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
conditioning 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 compressor damage when the system is started again.
4
UNDERSTANDING YOUR INSTRUMENT PANEL 325

STARTING AND OPERATING
CONTENTS
Starting Procedures .................... 331
▫ Manual Transmission – If Equipped ....... 331
▫ Automatic Transmission – If Equipped ..... 331
▫ Normal Starting ..................... 331
▫ Extreme Cold Weather (Below –20°F Or
–29°C) ............................ 332
▫ If Engine Fails To Start ................ 332
▫ After Starting ....................... 334
 Engine Block Heater — If Equipped ........ 335
Manual Transmission — If Equipped ........ 335
▫ Shifting ........................... 336
▫ Downshifting ....................... 337
▫ Reverse Shifting ..................... 338
 Automatic Transmission — If Equipped ...... 339
▫ Key Ignition Park Interlock ............. 339
▫ Brake/Transmission Interlock System ...... 340
▫ Brake/Transmission Interlock Manual
Override .......................... 340
5

▫Automatic Transmission With Overdrive .... 341
 Four–Wheel Drive Operation (Command-
Trac I Or Rock-Trac) — If Equipped ....... 345
▫ Operating Instructions/Precautions ....... 345
▫ Shift Positions ...................... 347
▫ Shifting Procedure ................... 348
 Trac-Lok Rear Axle — If Equipped ........ 349
 Axle Lock (Tru–Lok) — Rubicon Models .... 350
 Rear Axle Lock (Four-Wheel Drive
Non-Rubicon Models) — If Equipped ........ 351
 Electronic Sway Bar Disconnect
— If Equipped ........................ 352
 On-Road Driving Tips .................. 354
 Off-Road Driving Tips .................. 354 ▫
Side Step Removal – If Equipped ......... 354
▫ The Basics Of Off-Road Driving .......... 356
▫ When To Use 4L (Low) Range ........... 356
▫ Simultaneous Brake And Throttle Operation . 357
▫ Driving In Snow, Mud And Sand ......... 357
▫ Crossing Obstacles (Rocks And Other High
Points) ............................ 358
▫ Hill Climbing ....................... 361
▫ Driving Through Water ................ 363
▫ After Driving Off-Road ................ 366
 Power Steering ....................... 367
▫ Power Steering Fluid Check ............. 368
 Parking Brake ........................ 369
328 STARTING AND OPERATING

Anti-Lock Brake System ................. 371
 Electronic Brake Control System ........... 373
▫ Anti-Lock Brake System (ABS) ........... 373
▫ Traction Control System (TCS) ........... 374
▫ Brake Assist System (BAS) .............. 374
▫ Hill Start Assist (HSA) ................ 375
▫ Electronic Roll Mitigation (ERM) ......... 378
▫ Electronic Stability Program (ESP) ........ 379
▫ ESP/BAS Warning Light ............... 385
▫ Trailer Sway Control (TSC) ............. 386
 Tire Safety Information ................. 387
▫ Tire Markings ....................... 387
▫ Tire Identification Number (TIN) ......... 391▫
Tire Terminology And Definitions ......... 392
▫ Tire Loading And Tire Pressure .......... 393
 Tires — General Information ............. 397
▫ Tire Pressure ....................... 397
▫ Tire Inflation Pressures ................ 398
▫ Tire Pressures For High-Speed Operation . . . 400
▫ Radial-Ply Tires ..................... 401
▫ Tire Spinning ....................... 401
▫ Tread Wear Indicators ................. 402
▫ Life Of Tire ........................ 402
▫ Replacement Tires .................... 403
 Tire Rotation Recommendations ........... 404
 Tire Pressure Monitor System (TPMS) ....... 406
5
STARTING AND OPERATING 329