See also:

Restoring the factory settings
•► Press the and buttons simultaneously for approximately six seconds until the battery check lamp flashes twice. ...

Overhead control panel
Overhead control panel Function 1 Switches the rear interior lighting on/off 2 Switches the automatic interior lighting control on/off 3 Switches the righthand reading lamp on/off 4 Ope ...

DEF
Important safety notes For BlueTEC vehicles only. DEF is a non-flammable, non-toxic, colorless, odorless and water-soluble fluid. Only use DEF that complies with ISO 22241. Do not add any ...