Operation Manual

membranes and to the eyes. You may expe-
rience a burning sensation in your eyes, nose
and throat. Coughing and watering of the
eyes are possible.
Do not inhale ammonia vapors. Fill the DEF
tank only in well-ventilated areas.
DEF must not come into contact with your
skin, eyes or clothing and must not be swal-
lowed. Keep DEF away from children.
If you or other persons come into contact with
DEF, observe the following:
R
Rinse DEF from your skin immediately with
soap and water.
R
If DEF comes into contact with your eyes,
immediately rinse them thoroughly with
clean water. Seek medical assistance with-
out delay.
R
If DEF has been swallowed, rinse your
mouth out immediately. Drink plenty of
water. Seek medical assistance without
delay.
R
Change out of clothing contaminated with
DEF immediately.
!
Only use DEF in accordance with
ISO 22241. Do not mix any additives with
DEF, and do not dilute DEF with water. This
may destroy the BlueTEC exhaust gas after-
treatment system.
!
Rinse surfaces that have come into con-
tact with DEF immediately with water or
remove DEF using a damp cloth and cold
water. If the DEF has already crystallized,
use a sponge and cold water to clean it. DEF
residues crystallize after time and contam-
inate the affected surfaces.
!
DEF is not a fuel additive and must not be
added to the fuel tank. If DEF is added to
the fuel tank, this can lead to engine dam-
age.
!
Only screw on the DEF refill bottle hand-
tight. It could otherwise be damaged.
The DEF filler neck is under the trunk floor.
X
Switch the ignition off.
X
Open the trunk.
X
Lift up the trunk floor (Y page 306).
X
Turn DEF cap : counter-clockwise and
remove it.
X
Turn DEF filler cap ; counter-clockwise
and open it.
Filler cap ; is secured with a plastic strip.
178
Refueling
Driving and parking