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:
Towing a vehicle with both axles on the ground
When having your vehicle towed, observe the
important safety notes.
WARNING
The power assistance for the steering and the
brake force booster do not work when the
engine is not running. You ...
Parcel nets
WARNING
Parcel nets are intended for storing lightweight
items only, such as road maps, mail,
etc.
Heavy objects, objects with sharp edges, or
fragile objects may not be transported in the
...
Warranty
The Service and Warranty Information booklet contains detailed information about
the warranties covering your vehicle.
Your authorized Mercedes-Benz Center will exchange or repair any defective par ...
