Welcome lamps
When parking the vehicle, leave the switch in
position 
or
: the parking and interior
lamps light up briefly when the vehicle is unlocked.
Activating/deactivating the welcome lamps
1. "Settings"
2. "Lighting"
3. "Welcome light"
Welcome light
The setting is stored for the remote control currently in use.
See also:
On the front passenger seat
Deactivating airbags
After installing a child restraint fixing system in
the front passenger seat, make sure that the
front, knee and side airbags on the front passenger
side are deactivated.
...
Treble, bass, balance, andfader
► "Treble": treble adjustment.
► "Bass": depth adjustment.
► "Balance": left/right volume distribution.
► "Fader": front/rear volume ...
Safety switch for the rear
Press the button on the
driver's door if
children are being transported in the
rear.
This locks various functions so that they cannot
be operated from the rear: safety switch. ...