1994 Cadillac Fleetwood Owner's Manual - Page 162

c air conditioning system. The flashing will continue for abouttwo minutes. It means you should have your system serviced. Push thisbutton to divide the air between the windshield and the heater ducts. This is useful when fog appears on the windshield or side glass due toa sudden rain or snowy conditions. DeJi-oster ~ To get fogor ice off the windshield, pushthe Defroster button. The fan speed will work automaticallyor you can choose another fan speed if you want. It will help a lot if you firstclear any ice and snow from the hood and the air inlet (it's between the hood and the windshield). 149