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.

- Switch off the ignition.
- Press the fuel filler flap in the direction of
arrow 1.
The fuel filler flap swings up.
- Turn blue DEF filler cap 2
counterclockwise and remove it.
DEF filler cap 2 is secured with a plastic
strap.
See also:
Tailgate emergency release (Wagon)
If the tailgate can no longer be opened from
outside the vehicle, use the emergency
release on inside of the tailgate.
On vehicles with a folding bench seat you can
open the tailgate from insid ...
Warning and display messages in the
multifunction display
– Activate ATTENTION ASSIST using the onboard
computer (Y page 232).
Symbol 1 appears in the multifunction
display.
– If necessary, take a break.
– Press or
to confirm the
message.
On l ...
Important safety notes
WARNING
Only use carriers when the basic carrier bars
have been completely mounted. The left and
right roof rails are only stabilized by means of
the basic carrier bars mounted.
Follow the ma ...
