Never heat fuel system components. Con-
tact aqualifiedspecialist workshop to rec-
tify the malfunction.
At low outside temperatures, paraffin separa-
tion may cause the flow properties of the die-
sel fuel to be insufficient.
To prevent operating problems, dieselfuel with
improved flow properties is availableinthe
winter months.
The vehicle may be equipped with afuel pre-
heating system. The fuel preheating system
warms up the fuel and thereby improves its
flow characteristics.
Fuel additives
!
Do not use fuel additives. Fuel additives
can cause malfunctions and engine damage.
Do not add any gasoline, paraffin or flow
improver to the dieselfuel to improve flow
characteristics. Such flow improvers reduce
the lubricant properties of the dieselfuel.
This can result in damage to the dieselinjec-
tion system, for example.
Information about fuel consumption
H
Environmental note
CO
2
(carbon dioxide)isthe gas that accord-
ing to the current state of knowledge is
mainly responsiblefor the heating of the
earth's atmosphere (greenhouse effect). The
CO
2
emissions of yourvehicle vary in direct
correspondence with the fuel consumption
and is therefore dependent on:
R
the efficient utilization of the fuel by the
engine
R
the respective style of driving
R
other non-technical factors, such as envi-
ronmental influences, condition of the
road or traffic flow, for example
You can help to minimize CO
2
emissions
with aconservative driving style and regular
maintenance of yourvehicle .
i
Only for certain countries: the respective
current consumption and emissionvalues of
yourvehicle can be found in the COC docu-
ments (EC CERTIFICATE OF CONFORMITY).
You willreceive these documents on deliv-
ery of the vehicle.
Alternative dieselfuels in accord-
ance with DINEN15940
Observe the safety notes on service products.
Alternative dieselfuels in accordance with
DIN EN 15940 may be manufactured from:
R
hydrotreated vegetableoils (HVO –Hydro-
treated VegetableOils)
R
biomass (BtL –Biomass-to-Liquid)
R
natural gas (GtL –Gas-to-Liquid)
R
coal (CtL –Coal-to-Liquid)
Your vehicle can be operated with pure alter-
native dieselfuels in accordance with
DIN EN 15940 and mixtures of conventional
dieselfuels and alternative dieselfuels in
accordance with DIN EN 15940.
Diesel Exhaust Fluid (DEF)
Notes on DEF
!
Only use DEF in accordance with
DIN 70070/ISO22241.Donot use any
additives.
If DEF comes into contact with painted or
aluminum surfaces when filling the tank,
rinse the affected area immediately with
plenty of water.
It may be against regulations or, in some coun-
tries, liable to prosecution if avehicle is oper-
ated withoutDEF or with DEF that does not
correspond with the specifications in these
Operating Instructions.
If the DEF tank still contains enough DEF,
pressure compensation may occur when the
tank lid is unscrewed. DEF may spill out as a
result. Therefore, open the DEF tank lid care-
fully. If DEF spillsout, immediately wash the
affected area with plenty of water.
DEF is anon-flammable, non-toxic, colorless
and odorless, water-soluble liquid.
When opening the DEF tank, small amounts of
ammonia vapors can escape.
Serviceproducts
203
Technical data
Z
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