Mercedes-Benz 300 E 1990 Owner's Manual page 25

Temperature Selection
The desired interior temperature can be se­
lected by rotating the temperature selector.
The selected temperature is reached as
quickly as possible and maintained. A basic
setting of 7 2 ° F (22°C) is recommended.
Note:
If the temperature regulation becomes defectives,
move the temperature selector to the " M IN" or
'' MAX" end positions to turn on or off.
" M IN" = Heat off
"M A X " = H eaton
Have the system checked at your authorized
MERCEDES-BENZ dealer as soon as possible.
Air Recirculation
Press symbol side of switch = the air re­
I
circulation mode is engaged. The indicator
lamp in the switch lights up.
This mode can be selected to prevent an­
noying odors or dust from entering the car's
interior.
At high outside temperatures, the system auto­
matically engages the recirculated air mode thereby
increases the cooling capacity performance.
The recirculated air mode will be automatically
switched off after approximately 30 minutes of
operation at outside temperatures above approxi­
mately 7°C (4 5 °F) and after approximately
5 minutes at outside temperatures below approxi­
mately 7°C (4 5 °F).
If the windows begin to fog up from the inside,
switch from recirculated air back to fresh air by
pressing the lower half of the air recirculation
switch (the indicator lamp in the switch goes out).
Note:
It is not possible to switch to recirculated air if
button 0 or 0 | is depressed.