Your van runs on Diesel and does not drive without AdBlue (=DEF). Please pay attention to the display! What is AdBlue and why do I need to refill it?
You can fill up the tanks via the openings at the side of the driver´s door.
Above you see the diesel tank and below the AdBlue tank:
AdBlue
The on-board computer also tells you when the AdBlue level is low. A message appears together with this symbol:
Caution!
Be careful not to fill diesel into the water tank at the rear!
Do not confuse the diesel tank with the AdBlue tank when refuelling!