Mercedes-Benz 380 SL Owner's Manual page 26

Automatic Climate Control
4 "AUTO-HI" button:
Fast heating or cooling of
vehicle interior.
Air conditioning, air distribution
and blower control are the same
as in position " 3" "AUTO-LO".
The blower, however, operates
at a higher speed.
5 " BI-LEVEL" button:
For fogged-up windows.
During heating and cooling ope­
rations air is channelled to the
windshield and to the footwell.
During the cooling operation air
also enters via the center swi­
velling outlets 8.
The vehicle interior is cooled
practically free of draft with
more air being blown into the
footwell. The blower then
operates at a higher speed than
"AUTO-LO".
We recommend this position at
low ambient temperatures.
6 " DEF" button:
For iced-up windows.
Independent of the position of
the temperature selector wheel
air heated to maximum tempera­
ture is channelled to the w ind­
shield.
For the side windows, open
swivelling outlets 9.
7 Refrigerant com pressor switch:
Switching the air conditioning
com pressor on and off.
The com pressor can be switched
off com pletely in the positions
"AUTO-LO" and "AUTO-HI", e. g.
if no cooling is required
because of low ambient tem pe­
ratures (fuel economy).
Fresh air is supplied to the foot­
well if the refrigerant com pres­
sor is switched off while the
system is working in the cooling
mode.
Fresh air enters the vehicle through
openings in front of the windshield
(keep free of snow).
380 SLC and 380 SL with hardtop:
When the windows are closed the
air is emitted through ventilation
opening below the rear window.
Do not cover up ventilation open­
ings with clothes etc.
Important!
In order to keep the air condition­
ing section of the climate control
system in good working condition
at all times, it is necessary to
operate the A /C compressor briefly
at least once a month even during
the seasons it is normally not re­
quired. Switch compressor switch
to "ON" and depress "AUTO-LO" or
"AUTO-HI" button. Make sure that
the ambient temperature is above
2° C/36° F since the A / C com pres­
sor will not operate below this tem ­
perature.