Refueling; Diesel Exhaust Fluid (Def) - Mercedes-Benz Sprinter Operator's Manual

Diesel Exhaust Fluid (DEF)

The exhaust gas aftertreatment requires a
reducing agent, Diesel Exhaust Fluid (DEF), in
order to function correctly.
G
Warning
If you open the DEF reservoir cap at high
temperatures, ammonia vapors could be
released.
Ammonia vapors have a pungent odor and are
particularly irritating for your skin, respiratory
organs and eyes. This may result in burning
eyes, nose and throat, as well as coughing and
watering eyes.
Do not inhale ammonia vapors.
G
Warning
Avoid contact with DEF.
DEF is hazardous to health. Do not allow DEF
to come into contact with your skin. Rinse
affected areas with plenty of clean water and
consult a doctor if necessary.
%Environmental note
Dispose of DEF in an environmentally
responsible manner.
! Only use DEF in accordance with
ISO 22241. The exhaust gas aftertreatment
system may otherwise be damaged.
Observe the MB Specifications for Service
Products, Sheet No. 352.0.
Damage caused by the use of other
reducing agents will result in the loss of
your New Vehicle Limited Warranty
entitlements.
! If DEF comes into contact with a painted
or aluminum surface, wash the surface off
immediately with plenty of water.
! DEF is not a diesel additive and must not
be mixed with fuel in the tank. Even small
amounts of DEF can cause engine damage.
Damage resulting from adding DEF is not
covered by the New Vehicle Limited
Warranty.
i If the DEF level drops below the reserve
level, the second warning message
( Y page 116) appears and at this point, at
the latest, you must add at least 2.0 US gal
(7.6 l) of DEF.
You will find further information on DEF in the
"Service products" section (
DEF filler neck in the engine
compartment
X
Remove the key from the ignition lock.
X
Close all vehicle doors so that no ammonia
vapors can enter the vehicle.
i
Do not inhale any ammonia vapors which
may escape when you unscrew the tank
filler cap. Ammonia vapors have a pungent
odor. However, they are neither toxic nor
hazardous to health in this concentration.
X
Turn tank filler cap : counter-clockwise
and remove it.
X
Only fill the tank via the filler neck until the
DEF level can be seen in the filler neck.
X
Replace DEF tank filler cap : on the filler
neck and turn clockwise.
You will hear a click when tank filler
cap : is closed fully.
DEF filler neck on the right-hand vehicle
side
X
Remove the key from the ignition lock.
X
Close all vehicle doors so that no ammonia
vapors can enter the vehicle.

Refueling

143
Y page 155).
Z