1993 Cadillac DeVille Owner's Manual - Page 154

on thedisplay. To get a fan speed thatis a little lower than the"Auto Fan" speed, push the "Lo" or "Hi" button until you see the"Auto Fan Lo Fan" on thedisplay. When first starting your vehicle with a cold engine, the fan speed will gradually increase as the temperatureof the engine coolant increases. Defiost To get fog or ice off the windshield, push the Defrost button. It will help a lot if you first clearany iceand snow from the hood and the air inlet(it's between the hood and thewindshield). The fan speed operation is delayed if the engine is not at its normal operating temperature. Heated Windshield (Option) Front De-Ice Here's how to use your heated windshield in cold weather to remove ice or frost quickly: 1. If any snow is piled up on the windshield, brush it away. 2. Start your Cadillac and leave it in P ("Park").