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Automatic Temperature Control (ATC) —
If Equipped
Automatic Operation
1. Push the AUTO button on the faceplate, or
the AUTO button on the touchscreen on the
Automatic Temperature Control (ATC) Panel.
2. Next, adjust the temperature you would like
the system to maintain by adjusting the
driver and passenger temperature control
buttons. Once the desired temperature is
displayed, the system will achieve and auto-
matically maintain that comfort level.
3. When the system is set up for your comfort
level, it is not necessary to change the set-
tings. You will experience the greatest effi-
ciency by simply allowing the system to
function automatically.
NOTE:
• It is not necessary to move the temperature
settings for cold or hot vehicles. The system
automatically adjusts the temperature, mode,
and blower speed to provide comfort as
quickly as possible.
• The temperature can be displayed in U.S. or
Metric units by selecting the US/Metric cus-
tomer programmable feature. To provide you
with maximum comfort in the Automatic
mode during cold start-ups, the blower fan
will remain on low until the engine warms up.
The blower will increase in speed and transi-
tion into Auto mode.
Manual Operation Override
This system offers a full complement of manual
override features. The AUTO symbol in the front
ATC display will be turned off when the system
is being used in the manual mode.
Operating Tips
Summer Operation
The engine cooling system must be protected
with a high-quality antifreeze coolant to provide
proper corrosion protection and to protect
against engine overheating. OAT coolant (con-
forming to MS.90032) is recommended. Refer
to "Fluids And Lubricants" in "Technical Speci-
fications" for proper coolant selection.
Winter Operation
To ensure the best possible heater and defroster
performance, make sure the engine cooling sys-
tem is functioning properly and the proper
amount, type, and concentration of coolant is
used. Refer to "Fluids And Lubricants" in
"Technical Specifications" for proper coolant
selection. Use of the air Recirculation mode
during Winter months is not recommended,
because it may cause window fogging.
Vacation/Storage
Before 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 fresh air with the blower setting
on high. This will ensure adequate system lubri-
cation to minimize the possibility of compressor
damage when the system is started again.
Window Fogging
Vehicle windows tend to fog on the inside in
mild, rainy, and/or humid weather. To clear the
windows, select Defrost or Mix mode and in-
crease the front blower speed. Do not use the
Recirculation mode without A/C for long peri-
ods, as fogging may occur.
37
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