Automatic Climate Control - Mercedes-Benz 420 SEL 1989 Owner's Manual

Automatic Climate Control

The engine must be running for the
climate control system to operate.
1 Temperature selector
2 Pushbuttons for function selection
Defrost
Bi-Level
Normal setting
P I EC (Economy)
Q Off (air supply off)
22
3 Fan control buttons
S3
Maximum fan speed
Automatic fan speed
control
Minimum fan speed
4 Air recirculation switch
5 Volume control for
adjustable air outlets (8)
right and left
6 Volume control for
adjustable air outlets (7)
7, 8 Adjustable air outlets
9 Side air outlets
10 Volume control for side air
outlets (9) right and left
Heating, cooling, and air distribution
within the vehicle's interior will be
automatically controlled. This is
accomplished with the temperature
selector (1), the pushbuttons (2) and
the fan control buttons (3).
The adjustable air outlets (7) and (8)
can be variably opened and closed, or
moved to direct the flow of air as de­
sired. The outlets (7) are opened and
closed with slide lever (6), and outlets
(8) with slide levers (5).
Move slide levers (5) and (6) towards
the left to open, towards the right to
close.
The air flow from the outlets (9) may
be increased by rotating the control
(10) up, and reduced by rotating
down.
With the exterior lamps turned on (ex­
cept standing lamps), the symbols on
all buttons light up. Each button shi­
nes brighter when depressed.
Notes:
The automatic climate control
operates properly only if all windows
and the sliding roof are kept closed.
Air outlets (7), (8) and (9) must not all
be closed at the same time.
The air conditioner removes consider­
able moisture from the air during
operation. It is normal, for water to
drip on the ground through openings
in the underbody.