Mercury 1996 Grand Marquis Manual page 103

If the EATC is turned OFF while the outside
temperature is displayed, the temperature will
continue to be displayed. Press the OUTSIDE
TEMP button to clear the display window. When
the ignition key is turned OFF the display will
be blank (dark).
NOTE: The outside temperature reading is
most accurate when the vehicle is
moving. Higher readings may be
obtained when the vehicle is not
moving. The readings that you get may
not agree with temperatures given on
the radio due to differences in vehicle
and station locations.
Operating tips
The following tips will help you to get the most
satisfaction from your Electronic Automatic
Temperature Control system.
In humid weather, select DEF V before
starting your engine. This will help to
prevent windshield fogging. After a few
minutes of operation, switch to AUTOMATIC
or an override selection of your choice.
To prevent humidity buildup inside your
vehicle, always drive with the EATC System
turned on.
Do not put objects under the front seats that
interfere with the flow of air to the back seat
area.
Remove any snow, ice, or leaves from the air
intake area of your EATC System which
could block the air intake. The intake area is
located at the bottom of the windshield,
under the hood at the passenger side rear
corner.
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