1998 Oldsmobile Cutlass Owner's Manual - Page 129

Rear Window Defogger The rear window defogger uses a warming grid to remove fog from the rear window. NOTICE: Don't use a razor blade or anything else sharp o the insideof the rear window. you do, you If could cutor damage the warming grid, the and repairs wouldn't be covered by your warranty. Ventilation System Press the defogger switch.The indicator light will off glow. The rear window defogger will turn itself after about10 minutes afterthe first time the button is 5 the pressed, and after lninutes each additional time button is pressed. You can turn the defogger off by off pressing the button again or turning the ignition. Do not attach a temporary vehicle license across the defogger grid onthe rear window. For mild outside temperatures when heating or little cooling is needed, useVENT to direct outsideair Your vehicle also has the through your vehicle. flow-through ventilation system. Your vehicle's flow-through ventilation system supplies outside air into the vehicle when it is moving. Outside air will also enter the vehicle whenthe air conditioning fan is running.