BMW 3 Owners & Service Manuals

BMW 3: 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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 Power windows

Safety information Warning When operating the windows, body parts and objects can be jammed. There is a risk of injury or risk of damage to property. Make sure that the area of movement of the windows is clear during opening and closing. Overview Power windows Safety switch Functional requirements

 Voltage supply for other high-voltage consumers

The Electrical Machine Electronics supplies voltage not only to the electrical machine. The convenience charging electronics are directly connected with the Electrical Machine Electronics and ensure the voltage supply at high-voltage level to the electric A/C compressor and electrical heating. H

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