2007 Mercedes S-Class Owner's Manual - Page 434

Controls in detail Automatic climate control 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. 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. Front passenger compartment adjustable air vents Opening/closing the air vents: Turn thumbwheels 3, 5, 6 and 8 ( page 425). 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 depends on the coolant temperature the temperature set by the operator 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 433