1996 Mercury Sable Owner's Manual - Page 132

Clear away any snow that is on the rear window and side view mirrors before using the defroster. With the engine running, push the defrost button. After 10 minutes, the defroster will turn off. If the window and mirrors are still not clear, push the defroster button again. The defroster will turn off when the ignition key is turned to the OFF position. NOTE: Never use sharp instruments or window cleaners with abrasives to clean the inside of your rear window. If you do, you may damage the heating elements that are bonded to the inside of the rear window and cause damage to the rear window defroster. Liftgate Window Wiper and Washer (If equipped) The liftgate window wiper and washer switches To turn on the liftgate window wiper, press the b switch. To turn the liftgate window wiper off, press the switch again. To turn on the liftgate window washer, press the d switch. When the d switch is pressed, it also turns on the liftgate wiper. 105