See also:

Headlamp courtesy delay feature
The low beams stay lit for a short while after the ignition is switched off, if the lamps are switched off and the headlamp flasher is switched on. Setting the duration 1. "Settings" ...

BMW X3 iDrive Owners Manual
h1 {color: red;} h2 {color: green;} h3 {color: blue;} h4 {color: #FF00FF;} ...

Activating HDC
Press the button; the LED above the button lights up. ...