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Checking and refilling levels
We recommend the use of die
sel
f
uel which
complies to European standard EN 590. If
diesel fuel which meets European standard
EN 590 is not available, the Cetane number
(CZ) must, at minimum, be 51. If the engine
is equipped with a particulate filter, the sul-
phur content of the fuel must be below 50
parts per million.
Winter-grade diesel
Summer fuel becomes thicker in winter and it
is more difficult to start the engine. For this
reason, petrol stations in some countries al-
so offer winter diesel with improved fluidity
when cold (winter-grade diesel).
CAUTION
●
The vehic
le is not designed for the use of
FAME fuel (biodiesel). The fuel system would
be damaged if you used biodiesel.
●
Do not mix fuel additives, the so-called
“thinners”, petrol or similar additives with
diesel fuel.
●
If poor-quality diesel fuel is used, it may be
necessary to drain the fuel filter more fre-
quently than is specified in the Maintenance
Programme. We recommend having this done
by a specialised workshop. If water is allowed
to collect in the filter, this can cause engine
performance problems.
AdBlue
®
Inf
orm
ation on AdBlue
®
The consumption of AdBlue
®
depends on
y
our personal driving style, the temperature
of the system and on the outdoor tempera-
ture when the vehicle is used.
AdBlue
®
freezes at temperatures of -11°C
(+13°F). The system has heating elements
that guarantee its operation even at low tem-
peratures.
The AdBlue
®
tank level capacity is approxi-
mately 10.4 litres.
The AdBlue
®
tank should never be empty.
When the distance to empty drops below
2400 km, a warning to refill the AdBlue
®
tank
will appear on the dash panel display
›››
page 271. If this information is ignored,
later on it will not be possible to re-start the
engine. If this warning does not appear, it is
not necessary to refill the AdBlue
®
tank.
AdBlue
®
is a registered brand of the German
Association of the Automotive Industry (VDA)
and is also known as AUS32 or DEF (Diesel
Exhaust Fluid).
CAUTION
Filling the AdBlue
®
tank e
xcessively can
cause damage to the tank.
Refilling AdBlue
®
Fig. 236 AdBlue tank cap.
Operations prior to refilling
P
ark
the
vehicle on a flat surface. If the vehi-
cle is not parked on a flat surface, but, for ex-
ample, on a slope or on the side of a curb,
the level indicator may not detect the load
properly.
If a warning message about AdBlue
®
levels
appears on the dash panel display, fill at
least the minimum amount required (approx.
5 litres). Only after adding this amount will
the system detect that AdBlue
®
has been
added and you will be able to start the en-
gine again. The maximum amount that can
be refilled is 11 litres.
Switch the ignition off. If the ignition is not
switched off during refilling, the warning to
refill may continue to appear on the instru-
ment panel display.
»
271
Technical dataAdviceOperationEmergenciesSafety
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