BMW 3: Installation locations and connections
BMW 3 Series G20 (2018-2026) 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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Glass sunroof
General information
The glass sunroof and the sun protection are operated
using the same switch.
Safety information
Warning
Body parts can be jammed when operating the
glass sunroof. There is a risk of injury. Make
sure that the area of movement of the glass
sunroof is clear during opening and clos
Adjusting
Brightness
1. "CAR".
2. "Settings".
3. "Displays".
4. "Control display".
5. Adjust the brightness of the screen.
Headphones
Connect cordless headphones.
Tone
If the vehicle loudspeakers are selected for
sound output, the settings are adjusted as in the
front.
If headphones are selected for soun
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