The concept

switches the ignition on or off and Pressing the Start/Stop button switches the ignition on or off and starts the engine.

Automatic transmission: the engine starts if the brake is depressed when the Start/Stop button is pressed.

Manual transmission: the engine starts if the clutch is depressed when the Start/Stop button is pressed.

    See also:

    Deactivating HDC
    Press the button again; the LED goes out. HDC is automatically deactivated above approx. 37 mph/60 km/h. ...

    Active seat
    Active adjustment of the seat cushion's contours reduces muscular tension and fatigue to help prevent lower back pain. Press the button. The LED lights up. ...

    Auto Start-Stop, Brake Energy Regeneration, ECO PRO mode
    The new BMW 3-Series Sedan is equipped as standard with an Auto Start-Stop function, which automatically switches off the engine during short stops at traffic lights or in stationary traffic, so a ...