Problem Possible causes/consequences and
M SolutionsThe fuel filler flap
cannot be opened. The fuel filler flap is not unlocked.
or
The SmartKey battery is discharged.
X
Unlock the vehicle using the mechanical key ( Y page 80).
X Open the trunk lid or the tailgate.
X Manually unlock the fuel filler flap using the emergency release
(Y page 171). The fuel filler flap is unlocked, but the opening mechanism is
jammed.
X
Consult a qualified specialist workshop. 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 display.
When the DEF supply drops to a minimum, the
Remaining Starts: 16 message is shown
in the multifunction display.
If the Remaining Starts: 16 message
appears in the multifunction display, you can
start the engine another 16 times. If DEF is
not added, it will then not be possible to
restart the engine. Fill the DEF tank with
about 1 gal (3.8l) of DEF or have the DEF tank
refilled at a qualified specialist workshop.
Use the special DEF refill bottle when filling
between maintenance intervals. Contact an
authorized Mercedes-Benz Center with any
questions or, if necessary, contact Roadside
Assistance ( Y page 23).
If the outside temperature is lower than
12 ‡ ( Ò11) †, damage may occur when adding DEF. If DEF is frozen and there is an
active warning indicator, 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 specialist
workshop.
Further information about BlueTEC exhaust
gas aftertreatment and DEF is available at any
authorized Mercedes-Benz Center.
Important notes on topping up G
WARNING
Make sure
R DEF does not come into contact with skin,
eyes, or clothing
R to keep DEF out of the reach of children
If you and/or others have come into contact
with DEF:
R If DEF has gotten into contact with eyes,
flush with plenty of water immediately and
seek medical help.
R Clean
affected skin immediately with plenty
of water.
R If DEF was swallowed, rinse mouth
immediately with plenty of water and drink
plenty of water. Consult a physician. Refueling
173
Driving and parking Z
G
WARNING
If you open the DEF tank cap, small amounts
of ammonia vapor may be released. This
depends
in particular upon the age of the DEF.
Ammonia vapors have a pungent odor and are
particularly irritating to:
R skin
R mucous membranes
R eyes
You may experience a burning sensation in
your eyes, nose and throat, as well as
coughing and watering of the eyes.
Do not inhale any ammonia vapors that may
be released. Fill the DEF tank only in well-
ventilated areas.
! 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
aftertreatment system.
! Rinse surfaces that have come into
contact 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
contaminate 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
damage.
! 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 301). 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. X
Unscrew the protective cap from DEF refill
bottle =.
X Position DEF refill bottle = as shown on
the filler neck and screw it on hand-tight.
X Press DEF refill bottle = downwards.
The DEF tank is filled. This may take up to
one minute.
i To add between service intervals, fill the
DEF
tank with approximately 1 gal (3.8 l) of174
Refueling
Driving and parking
DEF. 1 gal (3.8 l) of DEF is equivalent to
approximately 2 DEF refill bottles. Then
have
the DEF supply checked at a qualified
specialist workshop and completely refilled
if necessary.
X Release DEF refill bottle =.
When DEF refill bottle = is no longer
pressed
down, filling stops. DEF refill bottle
= can be removed when it has been only
partially emptied.
X Turn DEF refill bottle = counter-clockwise
and remove it.
X Mount DEF filler cap ; on the filler neck
and turn it clockwise. X
Replace DEF cover :
as shown and turn it
clockwise as far as it will go.
X Fold the trunk floor down.
X Close the trunk lid.
X Drive faster than 10 mph (16 km/h).
The Check Additive See Operator's
Manual message goes out after
approximately one minute.
i If the Check Additive See
Operator's Manual message continues
to be shown in the multifunction display,
add an additional bottle of DEF.
For further information on DEF, see
(Y page 410). Parking
Important safety notes
G
WARNING
If flammable materials such as leaves, grass
or
twigs are exposed to prolonged contact to
parts of the exhaust system that heat up, they
could ignite. There is a risk of fire.
Park the vehicle so that no flammable
materials come into contact with parts of the
vehicle which are hot. Take particular care not
to park on dry grassland or harvested grain
fields. G
WARNING
If you switch off the ignition while driving,
safety-relevant functions are only available
with
limitations, or not at all. This could affect,
for example, the power steering and the brake
boosting effect. You will require considerably
more effort to steer and brake. There is a risk
of an accident.
Do not switch off the ignition while driving. G
WARNING
If you leave children unsupervised in the
vehicle, they could set it in motion by, for
example:
R releasing the parking brake
R shifting the automatic transmission out of
the parking position P
R starting the engine.
They could also operate the vehicle's
equipment.
There is a risk of an accident and
injury.
When leaving the vehicle, always take the
SmartKey with you and lock the vehicle. Never
leave children unsupervised in the vehicle.
! A moving vehicle can lead to damage to
the vehicle or damage to the drive train. Parking
175
Driving and parking Z
Stowage net in the rear
:
Stowage net
Stowage pockets G
WARNING
Storage bags are intended for storing light-
weight items only.
Heavy objects, objects with sharp edges or
fragile objects may not be transported in the
storage bag. In an accident, during hard
braking,
or sudden maneuvers, they could be
thrown around inside the vehicle and cause
injury to vehicle occupants.
Storage bags cannot protect transported
goods in the event of an accident.
The stowage pockets are on the back of the
driver's and front-passenger's seats. Stowage nets
G
WARNING
Parcel nets are intended for storing light-
weight items only, such as road maps, mail,
etc.
Heavy objects, objects with sharp edges, or
fragile objects may not be transported in the
parcel nets. In an accident, during hard
braking,
or sudden maneuvers, they could be
thrown around inside the vehicle and cause
injury to vehicle occupants.
Parcel nets cannot protect transported goods
in the event of an accident. Parcel nets are located in the front-passenger
footwell and on the left and right-hand sides
of the trunk/cargo compartment.
Skibag
Unfolding the skibag and loading skis G
WARNING
The skibag is designed for up to four pairs of
skis. Do not load the skibag with any other
objects.
Always fasten the skibag securely. In an
accident, an unfastened ski bag can cause
injury to vehicle occupants. X
Fold down the rear seat armrest.
X Press release catches ;
together and fold
down cover :. X
Pull skibag : into the vehicle interior and
unfold it.
X Open the trunk lid. Stowage areas
291
Stowage and features Z
X
Press release catch :.
The flap opens downwards.
X Slide the skis into the skibag from the
trunk. X
Pull strap : tight by the loose end until the
skis are held firmly inside the skibag. X
Engage hook : in securing ring ;.
X Pull the strap tight by the loose end. Removing the skis and folding up the
skibag
X
Loosen the two straps.
X Remove hook : from securing ring ;.
X Take the skis out of the skibag.
X Close the flap in the trunk.
X Smooth out the skibag and fold it up.
X Put the skibag into the backrest.
X Fold the cover back up.
i You should always close the flap in the
trunk if you do not require the skibag. This
will prevent unauthorized access to the
trunk from the vehicle interior.
Removing the skibag G
WARNING
When the skibag has been removed, always
drive
with the trunk lid closed. Exhaust fumes
could otherwise enter the vehicle interior. The skibag can be removed for cleaning or
drying.292
Stowage areas
Stowage and features
X
Open the trunk lid.
X Press release catch :.
Flap ; folds down.
X Press catch = in and pull out frame ?
containing the skibag. Through-loading facility in the rear
compartment
G
WARNING
Do not transport any unsecured items in the
through-loading area. The through-loading facility is opened from
the trunk.
X
Fold down the rear seat armrest.
X Press release catch :.
The flap opens downwards. Through-loading facility in the rear
bench seat (Sedan)
Important safety notes G
WARNING
When expanding the cargo volume, always
fold the seat backrests fully forward.
Unless you are transporting cargo, the seat
backrests
must remain properly locked in the
upright position.
In an accident, during hard braking or sudden
maneuvers, loose items will be thrown around
inside the vehicle. This can cause injury to vehicle occupants unless the items are
securely fastened in the vehicle.
Always use the cargo tie-down rings.
The left-hand and right-hand rear seat
backrests can be folded down separately to
increase the trunk capacity.
Folding the seat backrest forward i
Vehicles
with memory function: when you
fold one or both parts of the rear seat
backrest forwards, the respective front
seat moves forward slightly, when
necessary, in order to avoid contact.
X Vehicles without memory function: if
necessary, move the driver's or front-
passenger seat forwards.
X Open the trunk.
X Pull right-hand or left-hand rear seat
backrest release handle :.
The corresponding rear seat backrest is
released.
The rear seat head restraints are lowered. Stowage areas
293
Stowage and features Z
The left-hand and right-hand rear seat
backrests can be folded forwards separately
to
increase the cargo compartment capacity.
The combined cargo cover and net can
remain installed.
i When you fold one or both parts of the
rear seat backrests forwards, the
headrests are also lowered if necessary. In
the case of vehicles with memory function,
the respective front seat is moved forwards
slightly to avoid contact with the seat
behind it.
X Vehicles without memory function: if
necessary, move the driver's or front-
passenger seat forwards.
X Pull the left-hand or right-hand release
handle at the rear in cargo
compartment : or at the side beside
backrests ;.
The corresponding backrest folds
forwards.
X Pull the left-hand or right-hand release
handle at the rear in cargo
compartment :.
The corresponding backrest folds
forwards.
X Move the driver's or front-passenger seat
back if necessary.
Folding the rear seat backrest back G
WARNING
Make sure that the rear seat backrest is
correctly engaged. Otherwise, vehicle
occupants could be injured by objects being
thrown around if you
R brake sharply
R change direction suddenly
R are involved in an accident
If the rear seat backrest is not engaged, this
will be shown in the multifunction display in
the instrument cluster.
! Make sure that the seat belt does not
become
trapped when folding the rear seat backrest back. Otherwise, it could be
damaged.
X
Move the driver's or front-passenger seat
forward if necessary.
X Fold seat backrest :
back until it engages.
X Adjust the head restraints if necessary
(Y page 105).
X Move the driver's or front-passenger seat
back if necessary. Securing cargo
Plastic hooks (Sedan) On vehicles without a through-loading feature
in the rear bench seat, six plastic hooks are
installed to the trunk floor. Stowage areas
295
Stowage and features Z
X
Raise box : and press hooks A into
anchorage ? as far as they will go.
X Turn left-hand rotating catch B clockwise
and right-hand rotating catch B counter-
clockwise by 90°.
X To remove: turn left-hand rotating catch
B counter-clockwise and right-hand
rotating catch B clockwise by 90°.
X Move box : downwards and pull it out
from anchorages ?.
i Store the EASY-PACK trunk box on a flat
surface after removal, e.g. on a suitable
shelf. EASY-PACK load-securing kit (Wagon)
Components and storage The EASY-PACK load-securing kit allows you
to use your cargo compartment for a variety
of
purposes. The accessory parts are located
under the trunk floor.
X Open the EASY-PACK folding luggage-
compartment floor
(Y page 302). EASY-PACK load-securing kit accessory parts
:
Telescopic rod
; Bag containing the brackets and luggage
holder
= Folding box
Inserting the brackets into the loading
rail G
WARNING
Distribute the load on the cargo tie down rings
evenly.
Otherwise, vehicle occupants could be
injured
by objects being thrown around if you:
R brake sharply
R change direction suddenly
R are involved in an accident
Please observe the loading guidelines. X
Insert bracket :
into the center of loading
rail ?.
X Press release button ; and push
bracket : into the desired position in
loading rail ?.300
Stowage areas
Stowage and features