Mercedes-Benz 2010 M-Class Operator's Manual page 335

For more information on AdBlue
( Y page 361).
®
The AdBlue filler neck is located under the
cargo compartment floor.
X
Switch off the ignition.
X
Open the tailgate (
X
Lift the cargo compartment floor
( Y page 268).
X
®
Turn AdBlue filler cap cover :
counterclockwise and remove it.
X
®
Turn AdBlue filler cap ;
counterclockwise and open it.
Filler cap ; is tethered with a plastic strap.
®
, see
Y page 75).
®
AdBlue (diesel engine only)
X
Pull dust cap off of AdBlue
=.
X
®
Place AdBlue refill container = on the
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 refill container = down.
®
The AdBlue tank is filled. This may take up
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 refill container =.
X
®
Turn AdBlue refill container =
counterclockwise and remove it.
X
®
Place AdBlue filler cap ; (
filler neck and turn it clockwise.
333
®
refill container
®
refill
®
refill
Y page 332) on
Z