Mercedes-Benz 2009 M-Class Operator's Manual page 384

Practical hints
®
AdBlue (diesel engine only)
®
AdBlue filler cap cover
1
X
Turn cover counterclockwise and
1
remove it.
®
AdBlue filler cap
2
382
X
Turn filler cap counterclockwise and
2
open it.
Filler cap is tethered with a plastic strap.
2
®
AdBlue refill container
3
X
®
Pull dust cap off of AdBlue
3.
X
®
Place AdBlue refill container
filler neck as illustrated and tighten it
moderately (hand-tight) by turning it
clockwise.
! Make sure to tighten the AdBlue
container only moderately, i.e. hand-tight,
as you could otherwise damage it.
X
Push AdBlue
The AdBlue
to 1 minute.
i When you stop pushing the AdBlue
container down, the filling process is
stopped and you can remove the refill
container.
X
Release AdBlue
X
Turn AdBlue
counterclockwise and remove it.
X
Place filler cap
neck and turn it clockwise.
refill container
on the
3
®
refill
®
AdBlue
1
®
refill container down.
3
®
tank is filled. This may take up
®
refill
®
refill container 3.
®
refill container
3
( Y page 382) on filler
2
filler cap cover