Single/Dual Electronic Temperature Zone - Mercury Mountaineer 2002 Owner's Manual

Controls and features
reduce window fogging. Additionally, if the engine is not warm enough to
provide heat, the fan will operate at a low speed and the airflow will be
directed to the windshield or to the floor. The fan speed will start to
increase and the airflow location will change to the floor area.
If unusual conditions exist (window fogging, etc.), the manual override
controls allow you to select airflow locations as necessary. To return to
full automatic control, press the AUTO control.

Single/dual electronic temperature zone

EXT
A/C
F F
F C
DUAL
R
AUTO OFF
Press DUAL to enable or disable the dual zone temperature feature.
When DUAL is pressed, the display window indicates the current
temperature setting for the driver and the last temperature setting that
was selected for the passenger. In addition to the DUAL control, the
passenger may engage the dual temperature zone feature by pressing the
passenger side temperature control.
The DUAL indicator will be lit when the dual temperature zone feature is
selected.
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