Mercedes-Benz 600 SEL 1993 Owner's Manual page 27

6 Residual Engine Heat
Utilization
With the engine switched off, it is
possible to continue heating the
interior for a short while. The rear
passenger compartment air outlet
must be closed.
Air volume and distribution are
controlled automatically.
To select:
Turn key in steering lock to posi­
tion 1 or 0 or remove key.
Press C H button
(indicator lamp lights up).
This function selection will not
activate if the engine coolant
temperature is below 122°F
(50°C) or if the battery charge
level is insufficient.
To cancel:
• Press L l^ lfl button
(indicator lamp goes out).
• Turn key in steering lock to
position 2.
The system will automatically
shut off
• after approx. 30 minutes.
• if the engine coolant tempera­
ture drops below 122°F (50°C).
• if the battery voltage drops.
7 Air Recirculation
Outside air is not supplied to the
car's interior.
This mode can be selected to
prevent annoying odors or dust
from entering the car's interior.
To select:
Press S 3 button
(indicator lamp lights up).
To cancel:
Press E 3 button
(indicator lamp goes out).
The system will automatically
switch from recirculated air to
fresh air if button 1171 is pressed:
• after approx. 5 minutes at
outside temperatures below
approx. 4 0 °F (5°C),
• after approx. 20 minutes, at
outside temperatures above
approx. 4 0 °F (5°C),
if button o is pressed:
• after approx. 5 minutes.
Notes:
If the windows should fog up from
the inside, switch from recirculated
air back to fresh air.
At high outside temperatures, the
system automatically engages the
recirculated air mode thereby
increasing the cooling capacity
performance, switching to partially
fresh air within 20 minutes.