1994 Buick Roadmaster Owner's Manual - Page 137

Heating When outsidetemperatures are cold, slidingthe lever to Warm will send heated through the heater outlets, air and some through the defroster vents. Defrosting The Defrost setting directs most the air through the of defroster vents,and some through the heater outlets. Use defrost when you want to remove or icefrom the fog windshield. Rear Window Defogger (Option) The lines you see on the rear window warmthe glass. Press the button to start warming your window. After 10 minutes, it will go off by itself or pressing the button again during the heating cycle If will shut it off. you need additional warming time, push the button again. I NOTICE: Scraping the inside your rear window could of cut and damage the heater. Your warranty would not cover this damage. Don't put decals there, you might have to scrape them off. 135