The concept

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:
Observe the following when
refueling
The fuel tank is full when the filler nozzle clicks
off the first time.
Handling fuels
Obey safety regulations posted at the gas
station. ...
Malfunction
A Check Control message is displayed.
On the Control Display, the areas in front of and
behind the vehicle are shaded. PDC has failed.
Have the system checked.
To ensure full operability:
` ...
Instrument cluster
Instrument cluster
1. Turn signal indicator lamp
2. Speedometer
3. Indicator/warning lamps
4. Active cruise control
5. Tachometer
6. BMW X5: current fuel consumption
BMW X6: engine oil ...
