2005 Chrysler 300 Owner's Manual - Page 198
2005 Chrysler 300 Manual
Page 198 highlights
198 UNDERSTANDING YOUR INSTRUMENT PANEL LO AUTO position should be used for front seat occupants only. The HI AUTO position should be used when more air flow is desired, or when rear seat occupants are present. Dial in the temperature you would like the system to maintain by rotating the driver's or passenger's control knob. Once the comfort level is selected the system will maintain that level automatically using the heating system. Should the desired comfort level require air conditioning, the system will automatically make the adjustment. You will experience the greatest efficiency by simply allowing the system to function automatically. Selecting the OFF position on the fan control stops the system completely and closes the outside air intake. 72°F (22°C) is the recommended setting for maximum comfort for the average person, however, this may vary. NOTE: The temperature setting can be adjusted at any time without affecting automatic control operation. The air conditioning in this system is automatic. Pressing this button while in AUTO mode will cause an audible beep and the LED will flash three times and remain off. This indicates that the system is in AUTO and requesting the air conditioning is not necessary. The system will automatically control recirculation. However, pressing this button will temporarily put the system in recirculation mode (ten minutes). This can be used when outside conditions such as smoke, odors, dust, or high humidity are present. This will cause an audible beep, and the LED will illuminate. After ten minutes the system will return to normal AUTO mode function and the LED will turn off.