2006 Mercedes E-Class Owner's Manual - Page 229

Controls in detail 4-zone automatic climate control* Residual heat and ventilation (Canada only) 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. 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 distribution control setting. Activating Switch off the ignition. Press button T ( page 217). REST in the display 4 ( page 217) comes on. Deactivating Press button T ( page 217) again. REST in the display 4 ( page 217) goes out. i The residual heat is automatically turned off: when the ignition is switched on after about 30 minutes if the battery voltage drops if the coolant temperature is too low i If you switch on the residual heat function when temperatures are high, only the ventilation will be switched on. i Regardless of the selected air volume, the blower operates at low speed. 228