BMW 3: Installation locations and connections
BMW 3 Series G20 (2018-2023) Training manual / Electrical Heating / Installation locations and connections
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G20 PHEV, heater circuit
- Electric coolant pump
- Connection to the coolant circuit
- Heat exchanger for heating system
- Electrical heating
- Electrical changeover valve
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Connections at the electric heating
- Coolant feed line (from the electric coolant pump)
- Coolant feed line (to the heat exchanger for heating system)
- Coolant temperature sensor
- Equipotential bonding line connection
- Signal connector (low-voltage connector)
- Coolant temperature sensor connection
- High-voltage connector connection
- Housing
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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
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
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Washer fluid
General information
All washer nozzles are supplied from one reservoir.
Use a mixture of tap water and windshield
washer concentrate. If desired, a windshield
washer concentrate containing antifreeze can be
used.
Recommended minimum fill quantity:
0.2 US gal/1 liter.
Safety information
Warning
So
HYBRID
In the HYBRID driving mode, the vehicle chooses the optimum drive combination
depending on
the state of charge of the high-voltage battery unit and accelerator pedal
position. If the driver's
power request exceeds the maximum available electrical power, the combustion
engine is activated
automati
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