2009 Jeep Liberty Owner's Manual - Page 285

UNDERSTANDING YOUR INSTRUMENT PANEL 283 • Most of the time, when in Automatic Operation, you can temporarily put the system into Recirculation mode by pressing the RECIRCULATION button. However, under certain conditions, while in Automatic Mode, the system is blowing air out the defrost vents. When these conditions are present, and the RECIRCULATION button is pressed, the indicator will flash and then turn off. This tells you that you are unable to go into recirculation mode at this time. If you would like the system to go into Recirculation mode, you must first move the Mode Knob to Panel, Panel/ Floor and then press the RECIRCULATION button. This feature reduces the possibility of window fogging. Operating Tips NOTE: Refer to the chart at the end of this section for suggested control settings for various weather conditions. Summer Operation The engine cooling system in air-conditioned vehicles must be protected with a high-quality antifreeze coolant to provide proper corrosion protection and to protect against engine overheating. A 50% solution of ethylene glycol antifreeze coolant in water is recommended. Refer to "Maintenance Procedures" in Section 7 of this manual for proper coolant selection. Winter Operation Use of the air Recirculation mode during winter months is not recommended because it may cause window fogging. Vacation Storage Anytime you store your vehicle, or keep it out of service (i.e., vacation) for two weeks or more, run the air conditioning system at idle for about five minutes in the fresh air and high blower settings. This will ensure adequate system lubrication to minimize the possibility of compressor damage when the system is started again. 4