
Information abou
tService Resetting the ASSYST PLUS service inter-
val display
!
If the ASSYST PLUS service interval dis-
play has been inadvertently reset, this set-
ting can be corrected at a qualified special-
ist workshop.
Have service work carried out as described
in the Service Booklet. This may otherwise
lead to increased wear and damage to the
major assemblies or the vehicle.
Aq ualified specialist workshop, e.g. a
Mercedes-Ben zService Centre, will reset the
ASSYST PLUS service interval display after
the service work has been carried out. You
can also obtain further information on main-
tenance work, for example.
Special service requirements
Arduous operating conditions or increased
loads on the vehicle will require some service
work to be performed more often than for a
vehicle in normal use. Such arduous condi-
tions include regular city driving with frequent
intermediate stops and use in mountainous
terrain or on poor road surfaces.
For example, if the vehicle is used under ardu-
ous operating conditions, have air filters,
engine oil and oil filters changed frequently
and chec kthe wheels often.F urther informa-
tion can be obtained at a qualified specialist
workshop, e.g. a Mercedes-Ben zService
Centre.
Driving abroad
An extensive Mercedes-Benz Service network
is also available in other countries. The
Service Hotline's curren ttelephone numbers
for use when you are abroad are to be found
in the "Mercedes-Benz Service24h" section
of the Service Booklet. AdBlue
®
service indicator
i For BlueTEC vehicles only. To function properly, BlueTEC exhaust gas
aftertreatment must be operated with the
reducing agent AdBlue
®
. AdBlue ®
is topped
up as part of the service. Under normal oper-
ating conditions, a full tank of AdBlue ®
should
last until the nexts ervice due date.
Depending on how and where the vehicle is
used, there may be an increase in the
AdBlue ®
consumption, resulting in the next
service due date being brought forward.
Certain display messages show that
AdBlue ®
must be topped up, e.g.
Refill AdBlue at workshop See Own‐ er's Manual
Refill AdBlue at workshop No start
in .. km
Aw
arning tone also sounds.
You can no longer start the engine when the
AdBlue ®
supply has been used up
(Y page 281).
! Have the AdBlue ®
tank topped up at a
qualified specialist workshop only. The
vehicle may otherwise be damaged or
soiled.
Before taking a trip with your vehicle outside
Europe, have the AdBlue ®
supply checked at
a qualified specialist workshop. If necessary,
have AdBlue ®
topped up. Before a longer stay
outside of Europe, consult a qualified special-
ist workshop.
Observe the notes on AdBlue ®
(Y page 440).
You can obtain further informatio nabout
BlueTEC exhaust gas aftertreatment and
AdBlue ®
from any Mercedes-Benz Service
Centre. Care
General notes
H
Environmental note
Dispose of empty packaging and cleaning
cloths in an environmentally responsible man-
ner. 350
CareMaintenance and care 

In order for the battery to achieve the maxi-
mum possible service life, it must always be
sufficiently charged.
The vehicle battery, like other batteries, can
discharge over time if you do not use the
vehicle .Insuch cases, have the battery dis-
connected at a qualified specialist workshop.
You can also charge the battery with a
charge rrecommended by Mercedes-Benz.
For more information, please contact a quali-
fied specialist workshop.
Have the battery charge checked more fre-
quently if you use the vehicle mainly for short
trips or if you leave it standing idle for a
lengthy period. Consult a qualified specialist
workshop if you wish to leave your vehicle
parked up for a long period of time.
i When you park the vehicle, remove the
key if you do not require any electrical con-
sumers. The vehicle will then use very little
energy, thus conserving battery power.
i After an interruption of the power supply,
e.g. the battery was discharged, you have
to:
R set the clock. Information on setting the
clock can be found in the separate oper-
ating instructions.
On vehicles with COMAND Online and a
navigation system, the clock is set auto-
matically.
R reset the function for folding the exterior
mirrors in/out automatically, by folding
the mirrors out once (Y page 120).Charging the battery
G
WARNING
Only charge the battery in a well-ventilated
area. As the battery is being charged, gases
can escape and generate minor explosions.
This could injure you and other persons or
cause damage to the paintwork or acid cor-
rosion on the vehicle. You can obtain information on battery charg-
ers which allow the batter
yto be charged
while still installed from a qualified specialist
workshop. G
WARNING
There is a risk of acid burns during the charg-
ing process due to the gases which escape
from the battery. Do not lean over the battery
during the charging process. G
WARNING
Battery acid is caustic. Avoid contact with the
skin, eyes or clothing.
! Only charge the installed battery with a
battery charger which has been tested and
approved by Mercedes-Benz. These battery
chargers allow the battery to be charged
while still installed in the vehicle.
! Only use battery chargers with a maxi-
mum charging voltage of 14.8 V.
! Only charge the battery using the jump-
start connection point.
The jump-starting connection point is in the
engine compartment (Y page 370).
Read the battery charger's operating instruc-
tions before charging the battery.
X Open the bonnet (Y page 345).
X Connect the battery charger to the positive
terminal and earth point in the same order
as when connecting the donor battery in
the jump-starting procedure
(Y page 370). Battery (vehicle)
369Breakdown assistance Z 

Towing the vehicle with both axles on
the ground
G
WARNING
The powe rassistance for the steering and the
brake force booster do not work when the
engine is not running. You will then need
much more effort to brake and steer the vehi-
cle. Adapt your style of driving accordingly.
It is important that you observe the safety
instructions when towing away your vehicle
(Y page 372).
The automatic transmission automatically
shifts to position Pwhen you open the driver's
or front-passenger door or when you remove
the key from the ignition lock. In order to
ensure that the automatic transmission stays
in position Nwhen towing the vehicle, you
must observe the following points:
X Make sure that the vehicle is stationary and
that the key is in position 0in the ignition
lock.
X Turn the key to position 2in the ignition
lock.
On vehicles with KEYLESS-GO, use the key
instead of the Start/Stop button
(Y page 161).
X Depress and hold the brake pedal.
X Shift the automatic transmission to posi-
tion N.
X Vehicles with manual transmission:
depress the clutch pedal.
X Engage neutral.
X Release the brake pedal.
X Release the parking brake.
X Switch on the hazard warning lamps
(Y page 129).
X Leave the key in position 2in the ignition
lock.
i When towing with the hazard warning
lamps switched on, use the combination
switch as usual to signal achange of direc-
tion. In this case, only the turn signals for
the desired direction flash. When the com- bination switch is reset, the hazard warning
lamps start flashing again. Transporting the vehicle
! Only lash the vehicle down by the wheels
or wheel rims, not by parts of the vehicle
such as axle or steering components. Oth-
erwise, the vehicle could be damaged.
The towing eyes or trailer tow hitch can be
used to pull the vehicle onto a trailer or trans-
porter if you wish to transport it.
X Vehicles with manual transmission:
shift to neutral.
X Vehicles with automatic transmission:
turn the key to position 2in the ignition
lock.
X Shift the automatic transmission to posi-
tion N.
As soon as the vehicle is loaded:
X Prevent the vehicle from rolling away by
applying the parking brake.
X Vehicles with manual transmission:
engage first or reverse gear.
X Vehicles with automatic transmission:
shift the automatic transmission to posi-
tion P.
X Turn the key in the ignition lock to position
0and remove the key from the ignition
lock.
X Secure the vehicle. Notes for 4MATIC vehicles
! Vehicles with 4MATIC must not be towed
with the front or rear axle raised; otherwise,
the transmission may be damaged.
If the vehicle has transmission damage or
damage to the front or rear axle, have it trans-
ported on a transporter or trailer.
In the event of damage to the electrical
system 374
Towing and tow-startingBreakdown assistance