Service products and lubricants
285
Technical data
Low ambient temperatures
DEF freezes at a temperature of approxi-
mately 12 °F (–11 °C). The vehicle is
equipped with a DEF preheating system at
the factory. This ensures that the vehicle
can be operated in winter, even at temper-
atures below 12 °F (–11 °C).
Additives and tap water
! Do not mix DEF with any special additives
and do not dilute DEF with tap water. The ex-
haust gas aftertreatment may otherwise be dam-
aged.
Observe the MB Specification for Service Prod-
ucts, Sheet 352.0.
Damage that results from the use of additives or
tap water leads to a loss of New Vehicle Limited
Warranty entitlements.
Storage
Only store DEF in containers made of high-
alloy Cr-Ni steel or Mo-Cr-Ni-
steel in accordance with DIN EN
10 088-1/2/3 or plastic containers made
of polypropylene or polyethylene.
! Containers made of aluminum, copper, cop-
per alloys as well as unalloyed or galvanized
steel are not suitable for storing DEF. If stored in
these types of containers, DEF could cause con-
stituents of these metals to dissolve and damage
the exhaust gas aftertreatment.
Damage caused by dissolved components of the
storage container will result in a loss of your New
Vehicle Limited Warranty.
Disposal
Observe country-specific laws and regula-
tions when disposing of DEF.
Purity
The purity of DEF is essential to avoid mal-
functions in the exhaust gas aftertreat-
ment.
If DEF is pumped out of the tank, e.g. dur-
ing repair work, the same liquid must not
be used to refill the tank. Its purity is no
longer guaranteed.
! Impurities in DEF (e.g. caused by other ser-
vice products, cleaning agents, dust, etc.) result
in increased emissions, malfunctions, catalytic
converter damage or engine damage.
G Warning
When opening the DEF fuel filler cap at high
outside temperatures, ammonia vapors may
escape.
Ammonia vapors have a pungent smell and
are particularly irritating to skin, mucous
membranes and eyes. They can cause your
eyes, nose and throat to burn, and induce
coughing and cause your eyes to water.
Do not inhale ammonia vapors.
H Environmental note
Dispose of diesel exhaust fluid in an environ-
mentally responsible manner.
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