2005 Mercedes SLK-Class Owner's Manual - Page 189

Controls in detail Automatic climate control* Residual heat and ventilation With the engine switched off, it is possible to continue to heat or ventilate the interior for up to 30 minutes, depending on the temperature setting of the climate control. This feature makes use of the residual heat produced by the engine. Activating Turn the SmartKey in the starter switch to position 1 or 0, or remove it from the starter switch. Press residual heat/ventilation switch T ( page 185). The indicator lamp on the residual heat/ventilation switch T comes on. Deactivating Press residual heat/ventilation switch T again ( page 185). The indicator lamp on the residual heat/ventilation switch T goes out. The residual heat switches off automatically when you switch on ignition ( page 35) after about 30 minutes if the battery voltage drops Defrosting Windows fogged up on the inside Press defrosting switch P ( page 185). The indicator lamp on defrosting switch P comes on. The temperature rises and the ventilation operates with maximum blower speed. Press defrosting switch P again. The previous automatic climate control settings will be activated again. i How long the system will provide heating depends on the coolant temperature and the temperature set by the operator. The blower will run at speed setting 1 regardless of the air distribution control setting. 189