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:

    Following part replacement
    The same breaking in procedures should be observed if any of the components mentioned above have to be renewed in the course of the vehicle's operating life. ...

    Instrument cluster
    1.Speedometer 135i: with fuel gauge 2.  Indicator lamps for turn signals 3.  Indicator and warning lamps 4.  Tachometer 5.  Fuel gauge 135i: engine oil temperature 6.  ...

    Engine data
    ...