When the coolant temperature is low, for example after driving off, or in 
all-electric driving, the electric
changeover valve is activated by the Body Domain Controller (BDC). The 
electrical changeover valve
blocks the supply from the coolant circuit of the combustion engine. The coolant 
is now p
   
   
 
	
   Accepting a call
Depending on the equipment, incoming calls can
be answered in several ways.
	Via iDrive:
	"Accept"
	 Press the button on the 
	steering
	wheel.
	Via the selection list in the instrument cluster:
	Use the thumbwheel on the steering wheel to
	select: "Accept"
	Via touch screen: tap o