BMW 3: Operating principle
BMW 3 Series G20 (2018-2026) Training manual / Electrical Heating / 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.
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Low coolant temperature
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
Antifreeze and corrosion inhibitor
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
B46TU-B48TU Engines
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Standard charging cable
The standard charging cable is designed for mobile use. All protection and
communication devices
of the standard charging cable are integrated in the so-called "in-cable control
box". The volume and
weight of this solution is low and the charging cable can be easily transported
in the vehicle.
I
HD Radio reception
Concept
Many radio stations broadcast both analog and
digital signals.
General information
When setting a station with a digital signal, it may
take a few seconds before the station plays in
digital quality.
Information about HD Radio stations whose station
name ends with ...HD or with ...HD1:
In a
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