Mercedes-Benz 2006 SLK 280 Operator's Manual page 190

Activating
Switch off the ignition ( page 36).
Press button 9 ( page 179).
The indicator lamp on the button
comes on.
i
How long the system will provide heat-
ing depends on
the coolant temperature
the temperature set by the operator
The blower will run at speed setting 1
regardless of the air distribution con-
trol setting.
Deactivating
Press button 9 ( page 179) 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
Controls in detail
Climate control
189