Cadillac 2011 DTS Owner's Manual page 193

Turns the entire climate control system off.
Outside air still enters the vehicle and is directed to the
floor. The airflow direction and temperature can be
adjusted, as indicated below.
If the temperature is adjusted while the system is off,
the display will light to show the current settings.
or down buttons next to the fan control to manually
increase or decrease the temperature inside the
vehicle.
up or down buttons next to the air delivery mode control
to manually increase or decrease the temperature for
the front passenger. If the passenger climate control
system is off, pressing one of these buttons turns it on.
Turn clockwise or counterclockwise
to increase or decrease the fan speed. Turning this
control completely counterclockwise will turn on the
automatic fan operation. If the airflow seems low when
the fan speed is at the highest setting, the passenger
compartment air filter may need to be replaced. See
Passenger Compartment Air Filter on page 4 40.
counterclockwise to change the current airflow mode.
Press the up
Press the
Turn clockwise or
Select one of the following:
Turns on the automatic delivery mode
operation.
Air is directed to the instrument panel outlets.
Air is divided between the instrument
panel and the floor outlets. In automatic operation,
cooler air is directed to the upper outlets and warmer air
to the floor outlets.
Air is directed to the floor outlets with some
air directed to the side window outlets and the
windshield.
If recirculation is selected, it only stays on for
three minutes to reduce windshield fogging.
This mode clears the windows of
fog or moisture. Air is directed to the floor outlets,
with some air going to the side window outlets and
windshield. When selected, the system turns off
recirculation and runs the air conditioning compressor
unless the outside temperature is at or below freezing.
The recirculation mode cannot be selected while in the
floor/defog mode.
This mode clears the windshield of fog or
frost more quickly. Air is directed to the windshield and
side window outlets. When selected, the system
automatically turns off recirculation and runs the air
conditioning compressor, unless the outside
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