Warning and indicator lamps in the instrument cluster

See also:

Opening the DEF filler cap
The filler neck for DEF is behind the fuel filler flap. The fuel filler flap is unlocked or locked automatically when you open or close the vehicle with the SmartKey or with KEYLESSGO. - Swi ...

Changing batteries
Batteries are required for the remote control and for the two sets of cordless headphones. WARNING Keep the batteries out of the reach of children. Consult a doctor immediately if a child sh ...

Cleaning genuine wood and trim elements
  Wipe the wooden trim and trim pieces with a damp, lint-free cloth, e.g. a microfiber cloth.   Heavy soiling: use car care and cleaning products recommended and approved by Mercede ...