BMW 3: Operating principle
If the driver adjusts a desired temperature at the IHKA controls, the IHKA
calculates a corresponding
nominal temperature and compares it to the actual output temperature of the
electrical heating.
There is a coolant temperature sensor at the electrical heating output for this
purpose. This way the
IHKA control unit can decide whether the heat from the combustion engine is
sufficient to heat the
passenger compartment or whether the electrical heating should be switched on.
If the temperature
of the coolant is too low, the electric heating can heat up to a total of 6
stages. The electrical heating is
always condition-based thanks to this control operation.
READ NEXT:
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 changeo
The cooling system of the G20 PHEV is filled with the new antifreeze and
corrosion inhibitor Frostox
HT-12. The new antifreeze and corrosion inhibitor increases the long-term
stability and corrosion
h1 {color: red;}
h2 {color: green;}
h3 {color: blue;}
h4 {color: #FF00FF;}
SEE MORE:
General information
The buttons can be used to open the menus directly.
The Controller can be used to select
menu items and enter the settings.
Some iDrive functions can be operated using the
touchpad on the Controller.
Operation
Turn to switch between menu items, for example.
Press to selec
G20 PHEV, system wiring diagram for fuel supply
Integrated supply module
Digital Motor Electronics (DME)
Shutoff valve purge air line (only for US version)
Body Domain Controller (BDC)
Fuel filler flap lock
Power distribution box, rear
Fuel pump control electronics
Hybrid pressure ref