Dodge 2015 Challenger - Owner Manual - Manual (Page 336)

In MAX A/C, the blower level and mode position can be
adjusted to desired user settings. Pressing other settings
will cause the MAX A/C operation to switch to the prior
settings and the MAX A/C indicator will turn off.
Recirculation
When outside air contains smoke, odors, or
high humidity, or if rapid cooling is desired,
you may wish to recirculate interior air by
pressing the Recirculation control button. The
recirculation indicator will illuminate when this button is
selected. Press the button a second time to turn off the
Recirculation mode and allow outside air into the vehicle.
NOTE: In cold weather, use of Recirculation mode may
lead to excessive window fogging. The recirculation
feature may be unavailable (button on touchscreen
greyed out). The Recirculation mode is not allowed in
Defrost mode to improve window clearing operation.
Recirculation will be disabled automatically if this mode
is selected. Attempting to use Recirculation while in this
mode will cause the LED in the control button to blink
and then turn off.
Automatic Temperature Control (ATC)
Automatic Operation
1. Push the AUTO button on the faceplate or press the
“AUTO” button on the touchscreen.
334 UNDERSTANDING YOUR INSTRUMENT PANEL