2006 Mercedes SLK-Class Owner's Manual - Page 203

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. This feature makes use of the residual heat produced by the engine. Activating Switch off the ignition ( page 36). Press button T ( page 192). The indicator lamp on the button comes on. The display in the automatic climate control panel remains switched off. Deactivating Press button T ( page 192) again. The indicator lamp on the button goes out. i The residual heat is automatically turned off: when the ignition is switched on ( page 36) after about 30 minutes if the battery voltage drops i How long the system will provide heating depends on the coolant temperature the temperature set by the operator The blower will run at speed setting 1 regardless of the air volume control setting. 202