On the G30 the stratification for the driver/front passenger is not adjusted
in the usual manner by the
knurled wheels on the front dash panel. Instead, there is a menu button located
in the center of the
IHKA control panel. Pressing this button opens the IHKA menu in the CID. Once
the menu is di
Point A in the heat management module circuit diagram designates the cold
start with an engine that
has completely cooled down.
Cold-start phase, Bx8TU engine
In the cold-start phase, the coolant circulates exclusively via a bypass in
the coolant pump. The rotary
valve in the heat management mod