Trailer towing
2421
Telescopic lever
2 Indicator lamp
X Place the protective cap on the ball cou-
pling. G
Risk of injury
Make sure that no persons or animals are
in the pivoting range of the ball coupling.
Otherwise, they could be injured.
X Pull telescopic lever 1out forwards.
X Pull telescopic lever 1upwards.
The ball coupling disengages and folds
down under the rear bumper. Indicator
lamp 2flashes.
X Guide telescopic lever 1back again. X
Press the ball coupling in the direction of
the arrow by hand until it engages behind
the bumper.
Indicator lamp 2goes out and the mes-
sage in the multi-function display disap-
pears. Trailer 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.
! You can connect accessories with a max-
imum power consumption of 240 W to the
permanent power supply.
You must not charge a trailer battery using
the power supply.
You can obtain further information about
installing the trailer electrics from a qualified
specialist workshop, e.g. a Mercedes-Benz
Service Centre. Trailer with 7-pin connector
If your trailer has a 7-pin connector, you can
connect it to the 13-pin socket on the ball
coupling using an adapter or, if necessary, an
adapter cable. Both of these can be obtained
at a qualified specialist workshop, e.g. at a
Mercedes-Benz Service Centre. Operation
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Service
243
Fitting the adapter
1
Connector with lug
2 Socket with groove
X Open the socket cover.
X Insert the connector with lug 1into
groove 2on the socket and turn the con-
nector clockwise to the stop.
X Make the cover engage.
X If you are using an adapter cable, secure
the cable to the trailer with cable ties.
! Make sure that there is sufficient cable
play so that the cable cannot become
detached when cornering. Service
Active Service System PLUS
ASSYST PLUS, the Active Service System,
tells you when the next service is due. When-
ever a service is due, this is shown in the
multi-function display:
Service A due in .. days
Service A due in .. km
Service A due now The letter indicates how much time the work-
shop will require to carry out the service work.
The letters displayed range from
Afor a short
service duration to Hfor a long service dura-
tion.
ASSYST PLUS does not record any periods of
time during which the battery is disconnec-
ted. In order to maintain the time-dependent
service schedule, you should call up the
service due date and make a note of it before
you disconnect the battery. The alternative is to subtract the battery-disconnection periods
from the service date shown on the display. Fading out the service message
1
Reset button
X Press reset button 1. Operation
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Care
244 Exceeding the service due date
One of the following messages appears in the
multi-function display:
Service A overdue by .. days
Service A overdue by .. km
You will also hear a warning tone.
A qualified specialist workshop, e.g. a
Mercedes-Benz Service Centre, will reset the
service indicator when it carries out the nec-
essary service work.
i If you fail to have the service performed
by the specified date, you may be contra-
vening the relevant laws, your warranty
may be invalidated and ex gratia claims
may be refused. Calling up the service due date
Use the buttons on the multi-function steer-
ing wheel.
X Switch on the ignition.
X Press èorÿ to select the Basic
display menu (Y page 125).
X Press jork to select the service
information.
The 9 service symbol and the service
due date are displayed.
X To select a different display, press j,
è orÿ. Care
Notes on care
Regular and proper care maintains the value
of your vehicle.
i It is advisable to use Mercedes-Benz care
products.
Scratches, corrosive deposits, areas affected
by corrosion and damage caused by inade-
quate care cannot always be completely
repaired. In such cases, visit a qualified spe-
cialist workshop immediately, e.g. a
Mercedes-Benz Service Centre.
Repair damage caused by loose chippings
and remove the following substances imme-
diately, whilst avoiding rubbing too hard:
R Soak insect remains with insect remover
and rinse off afterwards.
R Soak bird droppings with water and rinse
off afterwards.
R Remove tree resin, oils, fuels and greases
by rubbing gently with a cloth soaked in
petroleum ether or lighter fluid.
R Use silicone remover to remove wax.
R Use tar remover to remove tar stains. Operation
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251
Where will I find...?
...........................252
Display messages ............................. 257
Troubleshooting ................................ 282
Locking/unlocking in an emer-
gency ................................................. 306
Resetting triggered NECK-PRO
head restraints .................................. 309
Changing the batteries .....................310
Changing the bulbs ...........................311
Replacing the wiper blades ..............315
Flat tyre ............................................. 317
Battery ............................................... 329
Jump-starting .................................... 333
Towing and tow-starting ..................337
Fuses .................................................. 340 Practical advice
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Display
messages 257Display messages
Notes
The on-board computer shows warnings or
malfunctions in the multi-function display.
Certain display messages are accompanied
by a warning tone or a continuous tone.
The multi-function display shows high-priority
display messages in red. In the following
tables, these display messages are printed in
red.
Please respond in accordance with the dis-
play messages and follow the additional
notes in this Owner's Manual. G
Risk of accident
No further messages can be displayed if the
instrument cluster and/or the multi-func-
tion display fails.
This means that you will not see information
about the driving situation, such as the speed, outside temperature, warning/indi-
cator lamps, display messages or system
failures. The vehicle's handling character-
istics may be affected. Adjust your driving
style and speed accordingly.
Immediately consult a qualified specialist
workshop which has the necessary special-
ist knowledge and tools to carry out the
work required. Mercedes-Benz recom-
mends that you use a Mercedes-Benz
Service Centre for this purpose. In particu-
lar, work relevant to safety or on safety-
related systems must be carried out at a
qualified specialist workshop.
When you stop and park the vehicle, please
observe the instructions provided for HOLD
(Y page 155) and parking ( Ypage 113).
The following tables contain all the display
messages. Hiding display messages After a few seconds, the on-board computer
automatically hides some low priority display
messages. Other messages remain visible in
the multi-function display until you hide them
yourself.
Some high priority display messages cannot
be hidden. The multi-function display shows
these messages continuously until the cau-
ses of the messages have been remedied.
Use the buttons on the multi-function steer-
ing wheel.
X
Use the è,·,jork button
to select another display.
The on-board computer saves certain dis-
play messages in the message mem-
ory (Ypage 131). Practical advice
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Display
messages 258 Text messages
G
Risk of accident and injury
The operating safety of the vehicle could be impaired if service work is carried out incorrectly. There is a risk that you could lose control of
the vehicle and cause an accident. The safety systems may no longer be able to protect you or others as they are designed to do.
Always have maintenance work carried out at a qualified specialist workshop which has the necessary specialist knowledge and tools to
carry out the work required.
Mercedes-Benz recommends that you use a Mercedes-Benz Service Centre for this purpose.
In particular, work relevant to safety or on safety-related systems must be carried out at a qualified specialist workshop. Display messages Possible cause/consequence Possible solution
120 km/h Maximum speed
exceeded The maximum speed has been excee-
ded
33
. X
Drive more slowly. ABS ABS, ESP inopera-
tive See Owner's
Manual
G
Risk of accident
ABS, ESP ®
and therefore also PRE-
SAFE ®
are unavailable due to a malfunc-
tion. BAS has also been deactivated.
The brake system is still available with
complete brake boosting effect. X
Drive on carefully.
X Visit a qualified specialist workshop. 33
Only for certain countries. Practical advi
ce
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Display
messages 259Display messages Possible cause/consequence Possible solution
ABS ABS, ESP unavaila-
ble See Owner's
Manual G
Risk of accident
ABS, ESP ®
and therefore also PRE-
SAFE ®
are unavailable due to undervolt-
age. BAS has also been deactivated.
The brake system is still available with
complete brake boosting effect. X
Drive on carefully.
X Visit a qualified specialist workshop. DISTRONIC Override
Distronic
* isno longer controlling the
speed of the vehicle. X
Ease off the accelerator pedal. DISTRONIC - - -
An activation condition for Distronic* is
not fulfilled. X
If conditions permit, drive faster than
30 km/h and store the speed (Y page 145).
or
X Check activation conditions for Distronic*. DISTRONIC inoperative
Distronic* is faulty. X
Visit a qualified specialist workshop. Practical advice
* optional
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Display
messages 260 Display messages Possible cause/consequence Possible solution
DISTRONIC currently unavail-
able See Owner's
Manual
Distronic
* is deactivated and is tempora-
rily inoperative, if:
R the Distronic* cover in the radiator
grille is dirty
R its function is impaired due to heavy
rain, snow or fog.
R the radar sensor system is temporarily
unavailable, e.g. because of electro-
magnetic radiation.
R the radar sensor system has not detec-
ted any vehicles or stationary objects,
e.g. traffic signs, for a long time.
R the system has overheated. Distronic* is available again and the display mes-
sage disappears when the dirt (e.g. slush) falls off
while you are driving or if the system detects that
the sensors are fully available again.
If the display message does not disappear:
X
Clean the Distronic* cover in the radiator grille
(Y page 248).
X If necessary, wait until the system has cooled
down.
X Restart the engine. ESP inoperative See
Owner's Manual
G
Risk of accident
ESP ®
and therefore also Brake Assist and
PRE-SAFE ®
are unavailable due to a mal-
function. The vwarning lamp also
lights up in the instrument cluster.
The brake system is still available with
complete brake boosting effect. X
Drive on carefully.
X Visit a qualified specialist workshop. Practical advice
* optional
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