Risk of explosion.
Fire, open flames and smoking are
prohibited when handlingthe bat-
tery. Avoid creating sparks.
Battery acid is caustic. Avoid con-
tact with skin, eyes or clothing.
Wear suitable protective clothing,
especially gloves, apron and face-
guard.
Rinse any acid spills immediately
with clear water. Contac taphysi-
cian if necessary.
Wear eye protection.
Keep children away.
Observe this Operator's Manual.
Fo r safety reasons, Mercedes-Benz recom-
mends that you only use batteries which have
been tested and approved for your vehicle by
Mercedes-Benz. These batteries provide
increased impact protection to preven t vehi-
cle occupants from suffering acid burns
should the battery be damaged in the event of
an accident.
In order for the battery to achieve the maxi-
mum possible service life, it must always be
sufficiently charged.
Like other batteries, the vehicle battery may
discharge over time if you do not use the
vehicle. In this case, have the battery discon-
nected at a qualified specialist workshop. You
can also charge the battery withacharger
recommended by Mercedes-Benz. Contac ta
qualified specialist workshop for further infor- mation. Have
the battery condition of charge checked
more frequently if you use the vehicle mainly
for short trips or if you leave it standing idle
for a lengthy period. Consult a qualified spe-
cialist workshop if you wish to leave your
vehicle parked for a long period of time.
Only replace a battery withabattery that has
been recommended by Mercedes-Benz.
Remove th eSm artKe
y if you park the vehicle
and do not require any electrical consumers.
The vehicle will then use very little energy,
thus conservin g battery power.
Afte r an interruption to the power supply, e.g.
due to a discharged battery, you must reset
th e clock using Audio 20 or COMAND. You
can find further information in the separate
operating instructions.
Charging the 12 ‑volt battery
GWARNING
During chargin g and jump-starting, explosive
gases can escape from the battery. There is a risk of an explosion.
Particularly avoid fire, open flames, creating
sparks and smoking. Ensure there is sufficient
ventilation while charging and jump-starting.
Do no t lean overabattery.
GWARNING
Battery aci d is caustic. There is a risk of injury.
Avoid contact with skin, eyes or clothing. Do
no t inhale any battery gases. Do not lean over
th e battery. Keep children away from batter-
ies. Wash away battery acid immediately with
plenty of clean water and seek medical atten-
tion .
GWARNING
A discharged battery can freeze at tempera-
tures below freezing point. When jump-start-
ing the vehicle or charging the battery, gases
can escape from the battery. There is a risk of
an explosion.
Batteries289
Breakdown assistance
Z
Installing/removing the towing eye
Installing the towing eye
The brackets for the screw-in towing eye are
located in the bumpers. They are at the rear
and at the front, under covers :.
XRemove the towing eye from the stowage
space.
The towing eye is located in the stowage
well under the cargo compartment floor.
Vehicles with the TIREFIT kit: the to wing
eye is beneath the tire inflation compres-
sor.
XPress the mark on cover :inwards in the
direction of the arrow.
XTake cover :off the opening.
XScrew in the towing eye clockwise to the
stop.
Removing the towing eye
XUnscrew and remove the towing eye.
XPlace the towing eye in the stowage well
beneath the cargo compartment floor in
the cargo compartment (
Ypage 282).
XVehicles with the TIREFIT kit: put back the
tire inflation compressor.
Towing a vehicle with both axles on
the ground
It is important that you observe the safety
instructions when towing away your vehicle
(
Ypage 294).
XOn vehicles with KEYLESS-GO or the
KEYLESS-GO start function: you must
use the SmartKey instead of the Start /S top
button (
Ypage 132).
The transmission automatically shifts to posi-
tion Pwhen you open the driver's or front-
passenger door or when you remove the
Sm artKey from the ignition lock. In order to
ensure that the transmission stays in position
N when towing the vehicle, you must observe
the following points:
XMake sure that the vehicle is stationary.
XTurn the SmartKey to position 2in the igni-
tion lock.
XDepress and hold the brake pedal.
XSh ift the transmission to position N.
XRelease the brake pedal.
XRelease the electric parking brake.
XSwitch on the hazard warning lamps
(
Ypage 102).
XLeave the SmartKey in position 2in the
ignition lock.
If the 12 V battery indicator lamp lights up,
you must observe the following points:
XPull over and stop the vehicle safely as soon
as possible, paying attention to road and
traff iccond itions.
XShift the transmission to position P.
XApply the electric parking brake.
iIn order to signal a change of direction
when towing the vehicle with the hazard
warning lamps switched on, use the com-
bination switch as usual. In this case, only
the indicator lamps for the direction of
travel flash. After resetting the combina-
tion switch, the hazard warning lamp starts
flashing again.
296Towing
Breakdown assistance
