ded. Filling a vehicle standing on an uneven
surface is not permitted. There is a danger
of overfilling, which can cause damage to
BlueTEC exhaust gas aftertreatment com-
ponents.
Have the AdBlue
®
tank refilled at a qualified
specialist workshop. However, you can also
top up the AdBlue
®
tank:
R
at a filling station with an AdBlue
®
filling
pump
R
with AdBlue
®
refill bottles
R
with an AdBlue
®
refill canister
If the outside temperature is lower than
Ò
11 †, it may be difficult to top up. If
AdBlue
®
is frozen and there is an active warn-
ing indicator, topping up may not be possible.
Park the vehicle in a warmer place, e.g. in a
garage, until AdBlue
®
has become fluid again.
Topping up is then possible again. Alterna-
tively, have the AdBlue
®
tank refilled at a
qualified specialist workshop.
When the pump nozzle switches off automat-
ically during filling at a filling pump, the
AdBlue
®
tank has been completely filled. Do
not fill the the AdBlue
®
tank any further.
AdBlue
®
may possibly leak.
!
Surfaces which have come into contact
with AdBlue
®
while refilling should be
rinsed immediately with water, or remove
AdBlue
®
with a moist cloth and cold water.
If AdBlue
®
has already crystallised, use a
sponge and cold water to clean the area.
AdBlue
®
residue crystallises after a certain
amount of time and soils the affected sur-
faces.
!
AdBlue
®
is not a fuel additive and must
not be added to the fuel tank. If AdBlue
®
is
added to the fuel tank, this can lead to
engine damage.
Further information on
AdBlue
®
(
Y
page 374).
Opening the AdBlue
®
filler cap
The filler neck for AdBlue
®
is located behind
the fuel filler flap.
The fuel filler flap is unlocked or locked auto-
matically when you open or close the vehicle
with the key or using KEYLESS-GO.
X
Switch off the ignition.
X
Press the fuel filler flap in the direction of
arrow
:
.
The fuel filler flap swings up.
X
Turn blue AdBlue
®
filler cap
;
anti-clock-
wise and remove it.
AdBlue
®
filler cap
;
is secured with a plas-
tic strip.
AdBlue
®
refill canisters
AdBlue
®
refill canisters can be obtained at
many filling stations or at a Mercedes-Benz
Service Centre. AdBlue
®
refill canisters are
often sold with a filler hose. A filler hose that
does not exactly fit the vehicle's AdBlue
®
tank offers no protection against overfilling.
AdBlue
®
could leak out as a result of overfill-
ing. Mercedes-Benz offers a special disposa-
ble hose with overfill protection. You can
obtain this from any Mercedes-Benz Service
Centre. AdBlue
®
is available in a variety of
containers and receptacles. Only use the dis-
posable hose with the Mercedes-Benz
AdBlue
®
refill canisters.
158
Refuelling
Driving
and
par
king
