Residual Engine Heat And Ventilation; Front Passenger Compartment Adjustable Air Vents - Mercedes-Benz 2007 S 550 Operator's Manual

Residual engine heat and ventilation

With the engine switched off, it is possible
to continue to heat or ventilate the interior.
This feature makes use of the residual heat
produced by the engine.
i
If you switch on the residual heat function
when outside temperatures are high, only the
ventilation will be switched on.
i
Regardless of the selected air volume, the
blower operates at low speed when heating. In
case of ventilation the blower operates at higher
speed.
i
How long the system will provide heating de-
pends on
the coolant temperature
the temperature set by the operator
Activating
Switch off the ignition ( page 315).
Press button T ( page 426) up or
down.
The indicator lamp on the button
comes on.
Deactivating
Press button T ( page 426) up or
down.
The indicator lamp on the button goes
out.
i
The residual heat is automatically turned off:
when the ignition is switched on
after approximately 30 minutes
if the battery voltage drops
if the coolant temperature is too low
Controls in detail
Automatic climate control
Front passenger compartment adjust-
able air vents
Opening/closing the air vents:
Turn thumbwheels 3, 5, 6 and 8
( page 425).
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