Mercedes-Benz 2016 GL, Operator'S Manual

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DEF (BlueTEC vehicles only)
Important notes on use
To function properly, BlueTEC exhaust gas
aftertreatment must be operated with the
reducing agent DEF. Adding DEF is one of the
tasks performed during maintenance. Under
normal operating conditions, a tank of DEF
lasts until the next service due date.
When the supply of DEF is almost used up, the
Check Additive See Operator's Manual
message is shown in the multifunction dis-
play.
If you drive the vehicle faster than 10 mph
(16 km/h), the Check Additive See Oper‐
ator's Manual message goes out after
approximately one minute.
When the supply of DEF is down to a reserve
of approximately 1 gal (3.8 l) the Refill
DEF See Operator's Manual message is
shown in the multifunction display.
When the DEF supply drops to a minimum, the
Remaining Starts: 16 message is shown
in the multifunction display.
If the
Refill DEF No Start in XXXX km
message is shown in the multifunction dis-
play, you can still drive the vehicle over the
distance shown. If DEF is not refilled, you will
subsequently be unable to start the engine.
If the Refill DEF Eng. Start Not Poss.
message appears in the multifunction display
and the engine does not start, you must add
DEF.
X
Add at least 1 gal (3.8 l) of DEF.
X
Switch on the ignition for at least 60 sec-
onds.
X
Start the engine.
i
Have the DEF tank refilled at a qualified
specialist workshop.
Use the special DEF refill bottle when adding
DEF between maintenance intervals. Contact
an authorized Mercedes-Benz Center with
any questions or, if necessary, contact Road-
side Assistance (
Y
page 26).
If the outside temperature is below 12 ‡
( Ò 11 †) it may be difficult to top up. If DEF is
frozen and there is an active warning indica-
tor, it may not be possible to add DEF. Park
the vehicle in a warmer place, e.g. in a garage,
until DEF has become fluid again. It will then
be possible to add DEF again. Alternatively,
have the DEF tank refilled at a qualified spe-
cialist workshop.
Further information about BlueTEC exhaust
gas aftertreatment and DEF is available at any
authorized Mercedes-Benz Center.
Important safety notes
DEF is a water-soluble fluid for the exhaust
gas aftertreatment of diesel engines. It is:
R
not poisonous
R
colorless and odorless
R
not flammable
When you open the DEF container, small
amounts of ammonia vapor may be released.
Ammonia vapors have a pungent odor and are
particularly irritating to the skin, to mucous
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
186
Refueling
Driving
and
parking