Mercedes-Benz Sprinter Quick Instructions page 21

DEF filler neck on the right-hand vehicle
side
DEF tank on the right-hand side of the vehicle
(example: Cab Chassis)
Retaining strap
:
Fuel filler neck cover
;
DEF tank filler cap
Holes under the cover for the release tool
=
Cover
?
Filler cap release tool
A
You will find information about Diesel Exhaust
Fluid (DEF) in the "Technical data" and
"Operation" sections of the vehicle's
Operator's Manual.
G
Warning!
Make sure that you read the Operator's Manual. You may
otherwise fail to recognize hazards.
Refueling
19