Acura 2011 TL Owner's Manual page 223

Climate Control System
Semi-automatic Operation
You can manually select various
functions of the climate control
system when it is in fully automatic
mode. All other features remain
automatically controlled. Making any
manual selection causes the word
AUTO in the display to go out.
Fan Control
Press the button to increase the
fan speed and airflow. Press the
button to decrease it.
220
Air Conditioning (A/C) Button
This button turns the air
conditioning on and off. You will see
A/C ON or A/C OFF in the display
(in the center display on models with
navigation system).
When you turn the A/C off, the
system cannot regulate the inside
temperature if you set the
temperature control below the
outside temperature.
2011 TL
Recirculation Button
When the indicator in the button is
on, air from the vehicle's interior is
sent through the system again.
When the indicator is off, air is
brought in from the outside of the
vehicle (fresh air mode).
The outside air intakes for the
climate control system are at the
base of the windshield. Keep this
area clear of leaves and other debris.
The system should be left in fresh
air mode under almost all conditions.
Keeping the system in recirculation
mode, particularly with the A/C off,
can cause the windows to fog up.
Switch to recirculation mode
when driving through dusty or
smoky conditions, then return to
fresh air mode.