2012 JEEP WRANGLER air condition

11. Brake Warning LightThis light monitors various brake functions,
including brake fluid level and parking brake
application. If the brake light turns on it may
indicate that the parking brake is applied, that
the brake fluid level is low, or that there is a problem with
the anti-lock brake system reservoir.
If the light remains on when the parking brake has been
disengaged, and the fluid level is at the full mark on the
master cylinder reservoir, it indicates a possible brake
hydraulic system malfunction or that a problem with the
Brake Booster has been detected by the Anti-Lock Brake
System (ABS) / Electronic Stability Control (ESC) system.
In this case, the light will remain on until the condition
has been corrected. If the problem is related to the brake
booster, the ABS pump will run when applying the brake
and a brake pedal pulsation may be felt during each stop. The dual brake system provides a reserve braking capac-
ity in the event of a failure to a portion of the hydraulic
system. A leak in either half of the dual brake system is
indicated by the Brake Warning Light, which will turn on
when the brake fluid level in the master cylinder has
dropped below a specified level.
The light will remain on until the cause is corrected.
NOTE:
The light may flash momentarily during sharp
cornering maneuvers, which change fluid level condi-
tions. The vehicle should have service performed, and
the brake fluid level checked.
If brake failure is indicated, immediate repair is neces-
sary.
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17. Vehicle Security Light — If EquippedThis light will flash at a fast rate for approxi-
mately 15 seconds, when the vehicle security
alarm is arming, and then will flash slowly
until the vehicle is disarmed.
18. Temperature Gauge
The temperature gauge shows engine coolant tempera-
ture. Any reading within the normal range indicates that
the engine cooling system is operating satisfactorily.
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.
274 UNDERSTANDING YOUR INSTRUMENT PANEL

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
354 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.
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UNDERSTANDING YOUR INSTRUMENT PANEL 355

PanelAir 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.
356 UNDERSTANDING YOUR INSTRUMENT PANEL

Recirculation ControlPressing 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.
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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.
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