BMW 3: Electrical Heating
BMW 3 Series G20 (2018-2026) Training manual / Electrical Heating
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Installation locations and connections
G20 PHEV, heater circuit
Electric coolant pump
Connection to the coolant circuit
Heat exchanger for heating system
Electrical heating
Electrical changeover valve
Connections at the elect
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.
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
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Coolant pump
The layout and function of the coolant pump have been revised and adapted to
match the cooling
concept of the B46TU/B48TU engines.
Coolant pump
Pressure relief valve closed (pressure < 2.2 bar / 32 psi)
Pressure relief valve opened (pressure > 2.2 bar /
Displays in Central Information Display
The familiar hybrid-specific displays are used:
Trip data (previously eDrive use)
Energy and power flow display
Adaptation to stretch of road
Driving style analysis
The representation of the driving style analysis has been revised. In this
way, it helps to develop a
particularly efficient dri
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