BMW 3 Owners & Service Manuals

BMW 3: 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.

There is a coolant temperature sensor at the electrical heating output for this purpose. This way the IHKA control unit can decide whether the heat from the combustion engine is sufficient to heat the passenger compartment or whether the electrical heating should be switched on. If the temperature of the coolant is too low, the electric heating can heat up to a total of 6 stages. The electrical heating is always condition-based thanks to this control operation.

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 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

 B46TU-B48TU Engines

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 BMW Gesture Control

Concept Several iDrive functions can be operated by hand motion using BMW Gesture Control. Overview The camera in the roofliner detects gestures that are carried out in the area of the center console at the height of the Control Display. Activating/deactivating Via iDrive: 1. "CAR". 2. "Settings".

 Hydraulic braking

G20 PHEV, hydraulic braking The brake booster is operated via the driver's foot operation, and the brake actuation is determined by means of the brake pedal angle sensor. Depending on the brake pedal angle sensor signal, the valves in the Dynamic Stability Control (DSC) are switched so that

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