2004 Jeep Grand Cherokee Owner's Manual - Page 164

164 UNDERSTANDING YOUR INSTRUMENT PANEL 6. Do not expose the disc to direct sunlight. 7. Do not store the disc where temperatures may become too high. RADIO OPERATION AND CELLULAR PHONES Under certain conditions, the cellular phone being On in your vehicle can cause erratic or noisy performance from your radio. This condition may be lessened or eliminated by relocating the cellular phone antenna. This condition is not harmful to the radio. If your radio performance does not satisfactorily "clear" by the repositioning of the antenna, it is recommended that the radio volume be turned down or off during cellular phone operation. CLIMATE CONTROLS Air Conditioning The controls for the heating/air conditioning and ventilation system in this vehicle consist of a series of rotary knobs. These comfort controls can be set to obtain desired interior conditions. Air conditioning can be obtained by depressing the "A/C" button on the control panel and setting the appropriate rotary knobs to obtain the desired comfort level.