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:
Purity
Assuring the purity of DEF is particularly
important with respect to avoiding
malfunctions in the exhaust gas
aftertreatment system.
If DEF is pumped out of the DEF tank, e.g. during repair wor ...
Activating
To open the tailgate: pull the handle on the tailgate.
To stop the opening procedure at the desired position: press the closing
button () in the tailgate or pull the handle on the outside of t ...
Ashtray in the front-compartment
center console
The holder under the ashtray is not heat
resistant. Before placing lit cigarettes in the
ashtray, make sure that the ashtray is
properly engaged. Otherwise, the holder
could be damaged.
...
