Mercedes-Benz M-Class 2009 Owners Manual - Manual (Page 384)

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