BMW 3 Owners & Service Manuals

BMW 3: Installation locations and connections

BMW 3 Series G20 (2018-2026) Training manual / Electrical Heating / Installation locations and connections

Installation locations and connections
G20 PHEV, heater circuit

  1. Electric coolant pump
  2. Connection to the coolant circuit
  3. Heat exchanger for heating system
  4. Electrical heating
  5. Electrical changeover valve

Installation locations and connections
Connections at the electric heating

  1. Coolant feed line (from the electric coolant pump)
  2. Coolant feed line (to the heat exchanger for heating system)
  3. Coolant temperature sensor
  4. Equipotential bonding line connection
  5. Signal connector (low-voltage connector)
  6. Coolant temperature sensor connection
  7. High-voltage connector connection
  8. 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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     Emergency Stop Assistant

    Concept If the driver is no longer fit to drive, the system helps to safely bring the vehicle to a standstill. General information The emergency stop function is not triggered automatically. The emergency stop function can only be triggered manually by the occupants. When the system is activated, t

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    Concept Adaptive light functions enable dynamic illumination of the roadway. General information The adaptive light functions may consist of one system or multiple systems, depending on the equipment version: Adaptive Light Control. Cornering light. Activating Press the button on the light swit

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