2010 Jeep Grand Cherokee Owner Manual SRT8 - Page 233

232 UNDERSTANDING YOUR INSTRUMENT PANEL captured interior air to condense on windows and hamper visibility. For this reason, the system will not allow "Recirculation" mode to be selected while in the defrost or defrost/floor modes. Attempting to use Recirculation while in these modes will cause the LED in the button to blink and then turn off. Operating Tips Window Fogging Windows will fog on the inside when the humidity inside the vehicle is high. This often occurs in mild or cool temperatures when it's rainy or humid. In most cases, turning the air conditioning (pressing the snowflake button) on will clear the fog. Adjust the temperature control, air direction, and blower speed to maintain comfort. blower speeds will reduce fogging. Interior fogging on the windshield can be quickly removed by selecting the defrost mode. Regular cleaning of the inside of the windows with a non-filming cleaning solution (vinegar and water works very well) will help prevent contaminates (cigarette smoke, perfumes, etc.) from sticking to the windows. Contaminates increase the rate of window fogging. Summer Operation Air conditioned vehicles must be protected with a high quality antifreeze coolant, during the summer, to provide proper corrosion protection and to raise the boiling point of the coolant for protection against overheating. A 50 % concentration is recommended. Refer to Recommended Fluids and Genuine Parts for the proper coolant type. As the temperature gets colder, it may be necessary to When using the air conditioner in extremely heavy direct air onto the windshield. Adjust the temperature traffic, in hot weather, especially when towing a trailer, control and blower speed to maintain comfort. Higher