
!Overfilling the fuel tank could damage the
fuel system.
!Take care not to spill any fuel on painted
surfaces. You could otherwise damage the
paintwork.
!Use a filter when refueling from a fuel can.
Otherwise, the fuel lines and/or injection sys-
tem could be blocked by particles from the
fuel can.
If you overfill the fuel tank, pressure may build
up in the fuel tank. This could cause fuel to spray
out when the fuel pump nozzle is removed.
There is a risk of injury. The fuel tank is full when
the fuel pump nozzle first switches off. End the
refueling process.
For further information on fuel and fuel quality
(
Ypage 289).
Refueling
Vehicles with a fuel filler flap
Example: G 550 fuel filler cap
:
To open the fuel filler flap
;Tire pressure table
=Fuel type
?To insert the fuel filler cap
When you open or close the vehicle with the
SmartKey, the fuel filler flap is automatically
unlocked or locked.
The position of the fuel filler cap is displayed
8 in the instrument cluster. The arrow next
to the filling pump indicates the side of the vehi-
cle. The fuel filler flap is located to the rear on
the right.
Opening the fuel filler cap
:To open the fuel filler flap
;Tire pressure table
=Fuel type
?To insert the fuel filler cap
XSwitch the engine off.
iWhen the engine is running and the fuel filler
flap is open, the yellow reserve fuel warning
lamp and the =(USA only) or ;(Can-
ada only) Check Engine warning lamp may
light up.
Further information about warning and indi-
cator lamps in the instrument cluster can be
found in the Digital Operator's Manual.
XRemove the SmartKey from the ignition lock.
XTurn the fuel filler cap counterclockwise and
remove it.
XInsert the fuel filler cap into the holder
bracket on the inside of filler flap ?.
Refueling
XCompletely insert the filler neck of the fuel
pump nozzle into the tank and refuel.
iDo not add any more fuel after the pump
stops filling for the first time. Otherwise, fuel
may leak out.
Closing
XReplace the fuel filler cap and turn it clock-
wise. The fuel filler cap audibly engages.
XClose the fuel filler flap.
iClose the fuel filler flap before locking the
vehicle. A locking pin otherwise prevents the
fuel filler flap from closing after the vehicle
has been locked.
128Refueling
Driving and parking

The maximum noseweight of the trailer drawbar
on the ball coupling for up to 3 people is 562 lbs
(255 kg). The maximum permissible trailer draw-bar noseweight for more than 3 persons and the
maximum load in the trunk can be found in the
trailer drawbar noseweight table (
Ypage 298).
However, the actual noseweight must not
exceed the value given on the trailer tow hitch or trailer identification plates. The lowest weight
applies.
Please note that when towing a trailer,
PARKTRONIC (
Ypage 158) and Blind Spot
Assist (Ypage 154) are only available with lim-
itations, or not at all.
iOn vehicles without level control, the height
of the ball coupling will alter according to the
load placed on the vehicle. If necessary, use a
trailer with a height-adjustable drawbar.
Driving tips
XOn long and steep downhill gradients, select
shift range 1,2or 3(Ypage 123) in good
time.
iThis also applies if you have activated cruise
control or SPEEDTRONIC.
XIf necessary, shift the transfer case to LOW
RANGE (Ypage 162).
This will use the braking effect of the engine,
so that less braking will be required to main-
tain the speed. This relieves the load on the
brake system and prevents the brakes from
overheating and wearing too quickly. If you
need additional braking, depress the brake
pedal repeatedly rather than continuously.
The maximum permissible speed for vehicle/
trailer combinations depends on the type of
trailer. Before beginning the journey, check the
trailer's documents to see what the maximum
permissible speed is. Observe the legally pre-
scribed maximum speed in the relevant country.
For certain Mercedes-Benz vehicles, the maxi-
mum permissible rear axle load is increased
when towing a trailer. Refer to the "Technical
data" section to find out whether this applies to
your vehicle. If you utilize any of the added max- imum rear axle load when towing a trailer, the
vehicle/trailer combination may not exceed a
maximum speed of 60 mph (100 km/h) for rea-
sons concerning the operating permit. This also applies in countries in which the permissible
maximum speed for vehicle/trailer combina-
tions is above 60 mph (100 km/h). When towing a trailer, your vehicle's handling
characteristics will be different in comparison to
when driving without a trailer and it will con-
sume more fuel.
On long and steep downhill gradients, you must
select shift range
1,2or 3in good time.
iThis also applies if you have activated cruise
control or DISTRONIC PLUS.
This will use the braking effect of the engine, so
that less braking will be required to maintain the
speed. This relieves the load on the brake sys-
tem and prevents the brakes from overheating
and wearing too quickly. If you need additional
braking, depre ss the bra
ke pedal repeatedly
rather than continuously.
Driving tips
If the trailer swings from side to side:
XDo not accelerate.
XDo not counter-steer.
XBrake if necessary.
RMaintain a greater distance from the vehicle
in front than when driving without a trailer.
RAvoid braking abruptly. If possible, brake gen- tly at first to allow the trailer to run on. Then,
increase the braking force rapidly.
RThe values given for gradient-climbing capa-
bilities from a standstill refer to sea level.
When driving in mountainous areas, note that
the power output of the engine and, conse-
quently, the vehicle's gradient-climbing capa-
bility, decreases with increasing altitude.
Trailer power supply
!
You can connect accessories with a maxi-
mum power consumption of 180 W to the
permanent power supply.
You must not charge a trailer battery using the
power supply.
The trailer socket of your vehicle is equipped at
the factory with a permanent power supply.
The permanent power supply is supplied via
trailer socket pin 9.
A qualified specialist workshop can provide
more information about installing the trailer
electrics.
168Towing a trailer
Driving and parking

Trailer with 7-pin connector
General notes
You can make a connection to the 13-pin socket
on the ball coupling using an adapter or, if nec-
essary, an adapter cable. Both can be obtained
in a qualified specialist workshop.
Installing the adapter
!Make sure that there is enough slack in the
cable for cornering so that the cable cannot
become detached.
XOpen the socket cover.
XInsert the connector with lug :into
groove ;on the socket and turn it clockwise
to the stop.
XMake the cover engage.
XIf you are using an adapter cable, secure the
cable to the trailer with cable ties.
iWhen the socket is connected, the backing
up aid is deactivated.
Towing a trailer169
Driving an d parking
Z

XTo lock:insert the mechanical key into the
lock (Ypage 61) and turn it 90° clockwise to
position 2.
XTo unlock: insert the mechanical key into the
lock (Ypage 61) and turn it 90° counter-
clockwise to position 1.
iThe glove box can only be locked and
unlocked using the mechanical key.
Door stowage compartment
There is an additional compartment located on
the driver's door paneling, which can be used to
store a mini tablet PC, for example.
Stowage compartment/telephone com-
partment under the armrest/in the center
console
:Small stowage compartment
;Release button for the armrest
Stowage compartment/telephone compart-
ment under the armrest
XTo open: press release button ;.
XFold up armrest.
iIn the stowage compartment, there is a
stowage tray.
XTo close: fold the armrest down.
The armrest engages audibly.
Stowage space in the rear
Storage pockets
GWARNING
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 brak-
ing, 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 located on the rear
side of the front seats.
Stowage nets
The stowage net is in the front-passenger foot-
well.
Observe the loading guidelines (
Ypage 214)
and the safety notes regarding stowage spaces
(
Ypage 215).
Cargo compartment enlargement
Important safety notes
GWARNING
If the rear bench seat/rear seat and seat
backrest are not engaged they could fold for-
wards, e.g. when braking suddenly or in the
event of an accident.
RThe vehicle occupant would thereby be
pushed into the seat belt by the rear bench
seat/rear seat or by the seat backrest. The
seat belt can no longer offer the intended
level of protection and could even cause
injuries.
RObjects or loads in the trunk/cargo com-
partment cannot be restrained by the seat
backrest.
There is an increased risk of injury.
Before every trip, make sure that the seat
backrests and the rear bench seat/rear seat
are engaged.
GWARNING
Combustion engines emit poisonous exhaust
gases such as carbon monoxide. If the rear
door is open when the engine is running, par-
ticularly if the vehicle is moving, exhaust
216Stowage areas
Stowag ean d features

XPush down the right-hand and left-hand sides
of cargo compartment cover;until it
engages.
XSlide catches :in the direction of the side
trim.
Roof carrier
GWARNING
When you load the roof, the center of gravity
of the vehicle rises and the driving character-
istics change. If you exceed the maximum roof
load, the driving characteristics, as well as
steering and braking, will be greatly impaired.
There is a risk of an accident.
Never exceed the maximum roof load and
adjust your driving style.
The roof is not suited for transporting loads. Do
not use the roof rails or other accessories which
are mounted on the roof.
Features
Cup holder
Important safety notes
GWARNING
If you transport objects in the vehicle interior
and these are not adequately secured, they
could slip or be flung around and thereby
strike vehicle occupants. In addition, cup
holders, open stowage spaces and mobile
phone brackets may not always be able to
hold the objects placed in them in the event of
an accident. There is a risk of injury, particu-
larly in the event of sharp braking or sudden
changes of direction.
RAlways stow objects in such a way that they cannot be tossed about in these or similar
situations.
RAlways make sure that objects do not pro-
trude out of the stowage spaces, luggage
nets or stowage nets.
REnsure that closable stowage spaces are
shut before beginning your journey.
RAlways stow and secure heavy, hard, poin-
ted, sharp-edged, fragile or large objects in
the cargo compartment.
!Only use the cup holders for containers of
the right size and which have lids. The drinks could otherwise spill.
Observe the loading guidelines (
Ypage 214).
Cup holder on the center console
XFold cup holder :all the way up.
Cup holders in the rear compartment
!Ensure that you remove all containers from
the cup holder in the rear before folding the
seat backrest and the seat cushion of the rear
bench seat forwards.
:Cup holder
220Features
Stowage and features

Sun visors
Overview
GWARNING
If the mirror cover of the vanity mirror is folded
up when the vehicle is in motion, you could be
blinded by incident light. There is a risk of an
accident.
Always keep the mirror cover folded down
while driving.
:Sun visor
;Bracket
=Mirror cover
?Mirror light
Vanity mirror in the sun visor
:Sun visor
;Bracket
=Mirror cover
?Mirror light
Mirror lights ?will only function if sun visor :
is clipped into bracket ;.
XFold down sun visor:.
XFold up mirror cover =.
Mirror lights ?are switched on automati-
cally.
Glare from the side
:Sun visor
;Bracket
=Mirror cover
?Mirror light
XFold down sun visor :.
XPull sun visor:from bracket ;.
XSwing sun visor :to the side.
Stowage compartment/ashtray
Stowage compartment/ashtray in the
center console
GWARNING
If you engage transmission position Dwhen
removing the ashtray insert, the vehicle can
roll away. There is a risk of an accident.
Always switch off the engine first and safe-
guard the vehicle against rolling away by
applying the parking brake.
Features221
Stowage and features
Z

:Cover
;Insert
iOn new veh icles, insert ;isstored inthe
glove box. Install the insert before using the
ashtray.
XTo open: press cover :and then release it.
The ashtray opens.
XTo remove the insert: make sure that the
engine is switched off and that the parking
brake has been appliedto secure the veh icle
against rolling away.
XMove the selector lever to N.
XPress downcover :.
In sert ;isreleased.
XPull insert ;upwards and remove it.
XTo install the insert: install insert;from
above.
XPush insert ;down .
In sert ;audibly engages.
XTo close: close cover :fully.
iThe ashtray is litupifthe low- beam head-
lamps are on.
Ashtray in the rear compartment
XTo open: fold cover ;out in the direction of
the arrow.
XTo remove the insert: press retaining lug :
and pull insert =upwards and out.
XTo install the insert: install insert =from
above.
XTo close: close cover ;fully.
Cigarette lighter
GWARNING
You can burn yourself ifyou touch the hot
heating element or the socket of the cigarette lighter.
In addition, flammable materials can ignite if:
Rthe hot cigarette lighter falls
Ra child holds the hot cigarette lighter to
objects, for example
There isa risk of fire and injury.
Alwa ys hold the cigarette lighter bythe knob.
Alwa ys make sure that the cigarette lighter is
out of reach of children. Never leave ch ildren
unsupervised in the vehicle.
!The 12 V socket inthe cigarette lighter can
be used for accessories (up to a maximum of
180 W), as long as they have the standard
socket type for cigarette lighters.
Note that the socket in the cigarette lighter
can bedamaged when connecting accesso-
ries, for example by:
Rfrequent insertion and removal
Rsockets that do not fit correctly
A damaged socket can cause the cigarette
lighter to stop working.
222Features
Stowage and features

XPress in cigarette lighter:.
Cigarette lighter :will pop out automatically
when the heating element is red-hot.
12 V sockets
General notes
!If you are simultaneously using all three
sockets in the vehicle, make sure that you do
not exceed the maximum current draw of
45 A. Otherwise, you will overload the fuses.
The sockets can be used for accessories with a
maximum current draw of 180 W (15 A) each,
e.g. bulbs or chargers for mobile phones.
If you use the sockets for long periods when the
engine is switched off, the battery may dis-
charge.
XTurn the SmartKey to position 2in the ignition
lock.
Socket in the front-passenger footwell
XLift up the cover of the socket.
iThe cigarette lighter socket can be also used
(Ypage 222). This is the case even if the
SmartKey has been removed from the ignition
lock.
Socket in the rear compartment
The socket is located on the center console in
the rear compartment.
XLift up the cover of the socket.
Socket in the cargo compartment
The socket is located in the cargo compartment
on the left-hand side, when viewed in the direc-
tion of travel, next to the rear door.
XLift up the cover of the socket.
115 V socket
GWARNING
The 115 VAC power socket operates on high
voltage. Use the 115 V AC power socket in the
vehicle with the same caution and care that
you would take with power sockets at home.
Keep fluids away from the 115 V AC power
socket. Do not use liquids or sharp tools to
clean the power socket. Keep the cover of the
115 V AC power socket closed when not in
use. Otherwise, you could suffer an electric
shock and beseriously or even fat allyinjured.
Features223
Stowage and features
Z