2007 Dodge Charger Owner's Manual - Page 180

180 UNDERSTANDING YOUR INSTRUMENT PANEL 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 The Air Conditioning and Heating System is designed to make you comfortable in all types of weather. Manual Air Conditioning and Heating System Manual Temperature Controls Blower Control The rotary knob on the left controls the blower. The control has an OFF position and four speed settings. The blower will remain on until the control is turned to the OFF position or the ignition is turned OFF.