A/C Button
Press and release this button on the touchscreen or press the button on the front panel to change the current setting. The A/C indicator illuminates when A/C is on.
Recirculation Button
Press and release this button to toggle the system between recirculation mode and fresh air mode. The recirculation indicator and the A/C indicator illuminate when the recirculation button is pressed. Recirculation can be used when external conditions such as smoke, odors, dust, or high humidity are present. Recirculation can be used in all modes except defrost. Recirculation may be unavailable (touchscreen button inactive) under conditions that could cause fogging on the inside of the windshield. A/C may be manually cancelled without changing the selected control mode. Continuous use of recirculation mode may make the cabin air stuffy, and windows may fog. Prolonged use of this mode is not recommended.
Test yourself
A quick Dodge Charger quiz: every answer comes with an explanation and a link to the manual page.