2007 JEEP WRANGLER air conditioning

CD/DVD Disc Maintenance...............251
Radio Operation And Cellular Phones........252
Climate Controls.......................252
▫Manual Heater Only...................252▫Manual Air Conditioning And Heating
System — If Equipped..................254
▫Operating Tips.......................258
UNDERSTANDING YOUR INSTRUMENT PANEL 199
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you select. The fan speed increases as you move the
control to the right from the OFF position.
Temperature Control
Use this control (right rotary knob) 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.
Manual Air Conditioning and Heating System — If
Equipped
The controls for the heating/air conditioning and venti-
lation system in this vehicle consist of a series of rotary
knobs. These comfort controls can be set to obtain desired
interior conditions.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.
254 UNDERSTANDING YOUR INSTRUMENT PANEL

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 or a blend of these modes even if
the fan switch is not in the A/C position. This dehumidi-
fies 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.
256 UNDERSTANDING YOUR INSTRUMENT PANEL

Temperature Control
Use this control to regulate
the temperature of the air in-
side the passenger compart-
ment. The blue area of the
scale indicates cooler tem-
peratures while the red area
indicates warmer tempera-
tures.
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.
Circulation Control
Press this button to choose
between outside air intake or
recirculation of the air inside
the vehicle. A lamp will illu-
minate when you are in “Re-
circulate” mode. Only use the
“Recirculate” mode to tempo-
rarily 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 “Recirculate” 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 “Recirculate”
mode will cause windows to fog on the inside because of
UNDERSTANDING YOUR INSTRUMENT PANEL 257
4

moisture build up inside the vehicle. For maximum
defogging, select the Outside Air position.
NOTE:The “Recirculate” mode will not operate in floor,
mix or defrost modes.
Air Conditioning Operation
Press this button to engage
the air conditioning. A lamp
will illuminate when the air
conditioning system is en-
gaged
NOTE:The air conditioning compressor will not engage
until the engine has been running for about 10 seconds.
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
258 UNDERSTANDING YOUR INSTRUMENT PANEL

The automatic transmission fluid and filter should be
changed if you REGULARLY tow a trailer for more than
45 minutes of continuous operation. See “Schedule B” in
section 8 of this manual for transmission fluid change
intervals.
NOTE:Check the automatic transmission fluid level
before towing.
Towing Tips — O/D Off (If Equipped)
To reduce potential for automatic transmission overheat-
ing, turn the “O/D OFF” feature OFF when driving in
hilly areas or shift the transmission to Drive position 2 on
more severe grades. Refer to “Transmission Shifting” in
this section.
Towing Tips — Electronic Speed Control (If
Equipped)

Don’t use in hilly terrain or with heavy loads.
When using the speed control, if you experience speed
drops greater than 10 mph (16 km/h), disengage until
you can get back to cruising speed.
Use speed control in flat terrain and with light loads to
maximize fuel efficiency.
Towing Tips — Cooling System
To reduce potential for engine and transmission over-
heating, take the following actions:
Highway Driving
Reduce speed.
Air Conditioning
Turn off temporarily.
refer to Cooling System Operating information in the
Maintenance section of this manual for more informa-
tion.
STARTING AND OPERATING 345
5

IF YOUR ENGINE OVERHEATS
In any of the following situations, you can reduce the
potential for overheating by taking the appropriate ac-
tion.
•On the highways — Slow down.
•In city traffic — While stopped, put transmission in N
(Neutral), but do not increase engine idle speed.
NOTE:There are steps that you can take to slow down
an impending overheat condition. If your air conditioner
is on, turn it off. The air conditioning system adds heat to
the engine cooling system and turning off the A/C
removes this heat. You can also turn the Temperature
Control to maximum heat, the Mode Control to floor, and
the Fan Control to High. This allows the heater core to act
as a supplement to the radiator and aids in removing heat
from the engine cooling system.
CAUTION!
Driving with a hot 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 for service.
WHAT TO DO IN EMERGENCIES 351
6

include cleaning of the condenser fins and a performance
test. Drive belt tension should also be checked at this
time.
WARNING!
•Use only refrigerants and compressor lubricants
approved by the manufacturer for your air condi-
tioning system. Some unapproved refrigerants are
flammable and can explode, injuring you. Other
unapproved refrigerants or lubricants can cause
the system to fail, requiring costly repairs. Refer to
Section 3 of the Warranty Information Book for
additional warranty information.
•The air conditioning system contains refrigerant
under high pressure. To avoid risk of personal
injury or damage to the system, adding refrigerant
or any repair requiring lines to be disconnected
should be done by an experienced repairman.
Refrigerant Recovery and Recycling
R-134a Air Conditioning Refrigerant is a hydrofluorocar-
bon (HFC) that is endorsed by the Environmental Pro-
tection Agency and is an ozone-saving product. How-
ever, the manufacturer recommends that air conditioning
service be performed by dealers or other service facilities
using recovery and recycling equipment.
Power Steering Fluid Check
Checking the power steering fluid level at a defined
service interval is not required. The fluid should only be
checked if a leak is suspected, abnormal noises are
apparent, and/or the system is not functioning as antici-
pated. Coordinate inspection efforts through a certified
DaimlerChrysler Dealership.
MAINTAINING YOUR VEHICLE 377
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