Jeep Wrangler Unlimited (2012 year). Instruction

STEERING WHEEL AUDIO CONTROLS
The remote sound system controls are located on the rear
surface of the steering wheel. Reach behind the wheel to
access the switches.

The right-hand control is a rocker-type switch with a
pushbutton in the center and controls the volume and
mode of the sound system. Pressing the top of the rocker
switch will increase the volume, and pressing the bottom
of the rocker switch will decrease the volume.

Pressing the center button will make the radio switch
between the various modes available.

The left-hand control is a rocker-type switch with a
pushbutton in the center. The function of the left-hand
control is different depending on which mode you are in.

The following describes the left-hand control operation in
each mode.

Radio Operation
Pressing the top of the switch will “Seek” up for the next
listenable station and pressing the bottom of the switch
will “Seek” down for the next listenable station.

Remote Sound System Controls

(Back View Of Steering Wheel)

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UNDERSTANDING YOUR INSTRUMENT PANEL

The button located in the center of the left-hand control
will tune to the next preset station that you have pro-
grammed in the radio preset pushbutton.

CD Player
Pressing the top of the switch once will go to the next
track on the CD. Pressing the bottom of the switch once
will go to the beginning of the current track, or to the
beginning of the previous track if it is within one second
after the current track begins to play.

If you press the switch up or down twice, it plays the
second track; three times, it will play the third, etc.

The center button on the left side rocker switch has no
function for a single-disc CD player. However, when a
multiple-disc CD player is equipped on the vehicle, the
center button will select the next available CD in the
player.

CD/DVD DISC MAINTENANCE
To keep a CD/DVD in good condition, take the following
precautions:

1. Handle the disc by its edge; avoid touching the
surface.

2. If the disc is stained, clean the surface with a soft cloth,
wiping from center to edge.

3. Do not apply paper or tape to the disc; avoid scratch-
ing the disc.

4. Do not use solvents such as benzene, thinner, cleaners,
or anti-static sprays.

5. Store the disc in its case after playing.

6. Do not expose the disc to direct sunlight.

7. Do not store the disc where temperatures may become
too high.

UNDERSTANDING YOUR INSTRUMENT PANEL

353

NOTE:

If you experience difficulty in playing a particu-

lar disc, it may be damaged (i.e., scratched, reflective
coating removed, a hair, moisture or dew on the disc)
oversized, or have protection encoding. Try a known
good disc before considering disc player service.

RADIO OPERATION AND MOBILE PHONES
Under certain conditions, the mobile phone being on in
your vehicle can cause erratic or noisy performance from
your radio. This condition may be lessened or eliminated
by relocating the mobile phone antenna. This condition is
not harmful to the radio. If your radio performance does
not satisfactorily “clear” by the repositioning of the
antenna, it is recommended that the radio volume be
turned down or off during mobile phone operation when
not using Uconnect™ (if equipped).

CLIMATE CONTROLS
The air conditioning and heating system is designed to
make you comfortable in all types of weather.

Manual Heating And Air Conditioning

The Manual Temperature Controls consist of a series of
outer rotary dials and inner push knobs.

Manual Temperature Control

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UNDERSTANDING YOUR INSTRUMENT PANEL

Blower Control

Rotate this control to regulate the
amount of air forced through the ven-
tilation system in any mode. The
blower speed increases as you move
the control to the right from the “O”
(OFF) position. There are seven blower
speeds.

Temperature Control

Rotate this control to regulate the tem-
perature of the air inside the passenger
compartment. Rotating the dial left
into the blue area of the scale indicates
cooler temperatures, while rotating
right into the red area indicates
warmer temperatures.

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 airflow to the
condenser, reducing air conditioning performance.

Mode Control (Air Direction)

Rotate this control to choose from sev-
eral patterns of air distribution. You
can select either a primary mode as
identified by the symbols on the con-
trol, or a blend of two of these modes.
The closer the setting is to a particular
symbol, the more air distribution you

receive from that mode.

UNDERSTANDING YOUR INSTRUMENT PANEL

355

Panel

Air is directed through the outlets in the instrument
panel. These outlets can be adjusted to direct airflow.

NOTE:

The center instrument panel outlets can be

aimed so that they are directed toward the rear seat
passengers for maximum airflow to the rear.

Bi-Level

Air is directed through the panel and floor outlets.

NOTE:

For all settings, except full cold or full hot, there

is a difference in temperature between the upper and
lower outlets. The warmer air flows to the floor outlets.
This feature gives improved comfort during sunny but
cool conditions.

Floor

Air is directed through the floor outlets with a
small amount flowing through the defrost and side

window demist outlets.

Mix

Air is directed through the floor, defrost, and side
window demist outlets. This setting works best in
cold or snowy conditions that require extra heat to

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 blower and temperature settings for best wind-
shield and side window defrosting.

NOTE:

The air conditioning compressor operates in

Mix, Defrost, or a blend of these modes, even if the Air
Conditioning (A/C) button is not pressed. This dehu-
midifies the air to help dry the windshield. To improve
fuel economy, use these modes only when necessary.

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UNDERSTANDING YOUR INSTRUMENT PANEL

Recirculation Control

Pressing the Recirculation Control button will
put the system in recirculation mode. This can
be used when outside conditions such as
smoke, odors, dust, or high humidity are pres-

ent. Activating recirculation will cause the LED in the
control button to illuminate. After ten minutes, the sys-
tem will return to normal mode function and the LED
will turn off.

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.

• The use of the Recirculation mode in cold or damp

weather will cause windows to fog on the inside,
because of moisture buildup inside the vehicle. Select
the outside air position for maximum defogging.

• The A/C will engage automatically to prevent fogging

when the recirculation button is pressed and the mode
control is set to panel or panel / floor.

• The A/C can be deselected manually without disturb-

ing the mode control selection.

• When the ignition switch is turned to the LOCK

position, the recirculation feature will be cancelled.

Air Conditioning Control

Press this button to engage the Air
Conditioning. A light will illuminate
when the Air Conditioning system is
engaged. Rotating the dial left into the
blue area of the scale indicates cooler
temperatures, while rotating right into
the red area indicates warmer tem-
peratures.

UNDERSTANDING YOUR INSTRUMENT PANEL

357

NOTE:

The air conditioning compressor will not engage

until the engine has been running for about 10 seconds.

• MAX A/C
For maximum cooling, turn on the A/C and recirculation
buttons at the same time.

• ECONOMY MODE
If economy mode is desired, press the A/C button to turn
OFF the indicator light and the A/C compressor. Then,
move the temperature control to the desired temperature.

Automatic Temperature Control (ATC) — If
Equipped

Automatic Temperature Control

358

UNDERSTANDING YOUR INSTRUMENT PANEL

Automatic Operation
The Automatic Temperature Control system automati-
cally maintains the climate in the cabin of the vehicle at
the comfort levels desired by the driver and passenger.

Operation of the system is quite simple.

1. Turn the Mode Control knob (on the right) and the
Blower Control knob (on the left) to AUTO.

NOTE:

The AUTO position performs best for front seat

occupants only.

2. Dial in the temperature you would
like the system to maintain by rotating
the Temperature Control knob. Once
the comfort level is selected, the sys-
tem will maintain that level automati-
cally using the heating system. Should

the desired comfort level require air conditioning, the
system will automatically make the adjustment.

You will experience the greatest efficiency by simply
allowing the system to function automatically. Selecting
the “O” (OFF) position on the blower control stops the
system completely and closes the outside air intake.

The recommended setting for maximum comfort is 72°F
(22°C) for the average person; however, this may vary.

NOTE:

• The temperature setting can be adjusted at anytime

without affecting automatic operation.

• Pressing the Air Conditioning Control button while in

AUTO mode will cause the LED in the control button
to flash three times and then turn off. This indicates
that the system is in AUTO mode and requesting the
air conditioning is not necessary.

UNDERSTANDING YOUR INSTRUMENT PANEL

359

• If your air conditioning performance seems lower than

expected, check the front of the A/C condenser located
in front of the radiator for an accumulation of dirt or
insects. Clean with a gentle water spray from behind
the radiator and through the condenser. Fabric front
fascia protectors may reduce airflow to the condenser,
reducing air conditioning performance.

Blower Control

For full automatic operation or for
automatic blower operation, turn the
knob to the AUTO position. In manual
mode, there are seven blower speeds
that can be individually selected. In off
position, the blower will shut off.

Manual Operation
This system offers a full complement of manual override
features, which consist of Blower Preferred Automatic,
Mode Preferred Automatic, or Blower and Mode Pre-
ferred Automatic. This means the operator can override
the blower, the mode, or both. There is a manual blower
range for times when the AUTO setting is not desired.
The blower can be set to any fixed blower speed by
rotating the Blower Control knob (on the left).

NOTE:

Please read the Automatic Temperature Control

Operation Chart that follows for details.

360

UNDERSTANDING YOUR INSTRUMENT PANEL

The operator can override the AUTO mode setting to
change airflow distribution by rotating the Mode Control
knob (on the right) to one of the following positions.

• Panel

Air is directed through the outlets in the instrument
panel. These outlets can be adjusted to direct airflow.

NOTE:

The center instrument panel outlets can be

aimed so that they are directed toward the rear seat
passengers for maximum airflow to the rear.

• Bi-Level

Air is directed through the panel and floor outlets.

NOTE:

For all settings, except full cold or full hot, there

is a difference in temperature between the upper and
lower outlets. The warmer air flows to the floor outlets.
This feature gives improved comfort during sunny but
cool conditions.

• Floor

Air is directed through the floor outlets with a
small amount flowing through the defrost and side

window demist outlets.

• Mix

Air is directed through the floor, defrost, and side
window demist outlets. This setting works best in
cold or snowy conditions that require extra heat to

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 blower and temperature settings for best wind-
shield and side window defrosting.

362

UNDERSTANDING YOUR INSTRUMENT PANEL

• Air Conditioner Control

Press this button to turn on the air
conditioning during manual operation
only. When the air conditioning is
turned on, cool dehumidified air will
flow through the outlets selected with
the Mode control dial. Press this but-
ton a second time to turn OFF the air

conditioning. An LED in the button illuminates when
manual compressor operation is selected.
• Recirculation Control

The system will automatically control recircu-
lation. However, pressing the Recirculation
Control button will temporarily put the system
in recirculation mode (ten minutes). This can

be used when outside conditions such as smoke, odors,
dust, or high humidity are present. Activating recircula-
tion will cause the LED in the control button to illumi-
nate. After ten minutes, the system will return to normal
AUTO mode function and the LED will turn off.

NOTE:

• When the ignition switch is turned to the LOCK

position, the recirculation feature will be cancelled.

• In cold weather, use of the Recirculation mode may

lead to excessive window fogging. The Recirculation
mode is not allowed in the floor, defrost, or defrost/
floor mode in order to improve window clearing.
Recirculation will be disabled automatically if these
modes are selected.

• Extended use of recirculation may cause the windows

to fog. If the interior of the windows begins to fog,
press the Recirculation button to return to outside air.
Some temp/humidity conditions will cause captured
interior air to condense on windows and hamper
visibility. For this reason, the system will not allow
recirculation to be selected while in floor, defrost, or
defrost/floor mode. Attempting to use recirculation
while in these modes will cause the LED in the control
button to blink and then turn off.

UNDERSTANDING YOUR INSTRUMENT PANEL

363

• Most of the time, when in Automatic Operation, you

can temporarily put the system into Recirculation
mode by pressing the Recirculation button. However,
under certain conditions, while in Automatic mode,
the system is blowing air out the defrost vents. When
these conditions are present, and the Recirculation
button is pressed, the indicator will flash and then turn
off. This tells you that you are unable to go into
Recirculation mode at this time. If you would like the
system to go into Recirculation mode, you must first
move the Mode knob to Panel, Panel/Floor and then
press the Recirculation button. This feature reduces the
possibility of window fogging.

Operating Tips

NOTE:

Refer to the chart at the end of this section for

suggested control settings for various weather condi-
tions.

Summer Operation
The engine cooling system in air-conditioned vehicles
must be protected with a high-quality antifreeze coolant
to provide proper corrosion protection and to protect
against engine overheating. A solution of 50% ethylene
glycol antifreeze coolant and 50% water is recommended.
Refer to “Maintenance Procedures” in “Maintaining Your
Vehicle” for proper coolant selection.

Winter Operation
Use of the air Recirculation mode during winter months is
not recommended because it may cause window fogging.

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 settings. This will ensure
adequate system lubrication to minimize the possibility
of compressor damage when the system is started again.

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UNDERSTANDING YOUR INSTRUMENT PANEL

Window Fogging
Interior fogging on the windshield can be quickly re-
moved by turning the mode selector to Defrost. The
Defrost/Floor mode can be used to maintain a clear
windshield and provide sufficient heating. If side win-
dow fogging becomes a problem, increase blower speed.
Vehicle windows tend to fog on the inside in mild but
rainy or humid weather.

NOTE:

Recirculate without A/C should not be used for

long periods as fogging may occur.

Side Window Demisters
A side window demister outlet is located at each end of
the instrument panel. These non-adjustable outlets direct
air toward the side windows when the system is in the
Floor, Mix, or Defrost mode. The air is directed at the area
of the windows through which you view the outside
mirrors.

Outside Air Intake
Make sure the air intake, located directly in front of the
windshield, is free of obstructions such as leaves. Leaves
collected in the air intake may reduce airflow, and if they
enter the plenum, they could plug the water drains. In
winter months, make sure the air intake is clear of ice,
slush, and snow.

A/C Air Filter — If Equipped
The A/C Filter prevents most dust and pollen from
entering the cabin. The filter acts on air coming from
outside the vehicle and recirculated air within the pas-
senger compartment. Refer to “Maintenance Procedures”
in “Maintaining Your Vehicle” for A/C Air Filter service
information or see your authorized dealer for service.
Refer to “Maintenance Schedules” for filter service
intervals.

UNDERSTANDING YOUR INSTRUMENT PANEL

365

STARTING AND OPERATING

CONTENTS

䡵 Starting Procedures . . . . . . . . . . . . . . . . . . . . 372

▫ Manual Transmission – If Equipped . . . . . . . 372
▫ Automatic Transmission – If Equipped . . . . . 372
▫ Normal Starting . . . . . . . . . . . . . . . . . . . . . 373
▫ Extreme Cold Weather

(Below –20°F Or –29°C) . . . . . . . . . . . . . . . . 373

▫ If Engine Fails To Start . . . . . . . . . . . . . . . . 373
▫ After Starting . . . . . . . . . . . . . . . . . . . . . . . 375

䡵 Engine Block Heater — If Equipped . . . . . . . . 375

䡵 Manual Transmission — If Equipped . . . . . . . . 376

▫ Shifting . . . . . . . . . . . . . . . . . . . . . . . . . . . 377
▫ Downshifting . . . . . . . . . . . . . . . . . . . . . . . 378
▫ Reverse Shifting . . . . . . . . . . . . . . . . . . . . . 379

䡵 Automatic Transmission — If Equipped . . . . . . 379

▫ Key Ignition Park Interlock . . . . . . . . . . . . . 381
▫ Brake/Transmission Shift Interlock System . . 382
▫ Five-Speed Automatic Transmission . . . . . . . 382
▫ Gear Ranges . . . . . . . . . . . . . . . . . . . . . . . . 384

Jeep Wrangler Unlimited (2012 year). Instruction - part 23