Heating; Defogging And Defrosting; Rear Window Defogger (Option) - Chevrolet 1999 Prizm Owner's Manual

Heating

For the quickest results, move the air intake lever to
RECIRCULATE and the airflow knob to FLOOR. Turn
the temperature knob clockwise for warmer air and turn
the fan knob toward HI. You should switch to
CIRCULATE once in a while to avoid stale air and
cloudy windows. To prevent cold air from blowing in,
and to increase air flow to the floor area, you may shut
off the outer dash vents by using the thumbwheels.
-
You may want to use bi level heating on cool but sunny
days. This setting directs outside air toward your body
and warmer air toward your feet.
Move the air intake lever to CIRCULATE and turn the
-
airflow knob to BI LEVEL. Turn the temperature knob
to the white area and the fan knob toward HI.

Defogging and Defrosting

Move the air intake lever to CIRCULATE and turn the
airflow knob to DEFROST to direct air to the
windshield vents. Turn the temperature knob clockwise
and the fan knob toward HI. When the windshield is
clear, turn down the fan speed.
To defog the windshield and side windows, move the
air intake lever to CIRCULATE and turn the air flow
knob to DEFOG.
3-4
On vehicles equipped with air conditioning, the A/C
light will come on and the A/C compressor may run to
dehumidify the air.

Rear Window Defogger (Option)

Press the switch to turn on the defogger. The defogger
will stay on for about 15 minutes, then it will shut off
automatically. You can also turn it off by pressing the
switch again. Use it only when the engine is running.
Make sure you turn the defogger off when the window is
clear. Leaving the defogger on for a long time could
cause the battery to run down, especially during
- -
stop and go driving. The defogger is not designed for
drying water or melting snow.
Do not attach anything like a temporary vehicle license
or a decal across the defogger grid on the rear window.
The rear window defogger
uses a warming grid to
remove fog from the
rear window.
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