Battery
289step out of the vehicle first and touch the
bodywork.
R Do not wipe the battery using a cloth. The
battery may explode as a result of elec-
trostatic charge or through the creation
of sparks.
! Switch the engine off and remove the key
before unscrewing or disconnecting the
terminal clamps from the battery. You may
otherwise destroy electronic components
such as the alternator.
Have the battery checked and, if neces-
sary, replaced at a qualified specialist
workshop, e.g. a Mercedes-Benz Service
Centre, every two years or at least every
20,000 km.
i Mercedes-Benz recommends that you
have all work involving the battery, e.g.
removing, charging and replacing, carried
out at a qualified specialist workshop, e.g.
a Mercedes-Benz Service Centre.
Installation location of the battery Your vehicle is equipped with a battery in the
boot. It is located under the cover in the spare
wheel well. 1
Electrostatic protection
2 Battery 1
Positive terminal (under cover)
2 Negative terminal Electrostatic protection G
Risk of injury
Only use rechargeable batteries with elec-
trostatic protection fitted. The electrostatic
protection prevents the creation of sparks
due to electrostatic buildup, thereby pre-
venting the highly explosive mixture of
gases in the battery from igniting.
i You can obtain the electrostatic protec-
tion from any Mercedes-Benz Service
Centre.
X To remove: pull the electrostatic protec-
tion upwards and remove.
X To fit: push the electrostatic protection
firmly onto the battery. Practical advice
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Battery
290 Disconnecting the battery
G
Risk of accident
If the battery is disconnected:
R there
is no brake boosting effect and you
will need to apply more pressure to brake
and the brake pedal travel will be longer;
you may have to depress the brake pedal
with full force
R you can no longer turn the key in the igni-
tion and, on vehicles with KEYLESS
GO*, pressing the KEYLESS GO button*
on the selector lever will have no effect
R the selector lever is locked in position P
! Always disconnect the battery in the
sequence described below. Never swap the
terminal clamps. You may otherwise dam-
age the vehicle electronics.
X Firmly depress the parking brake and move
the selector lever to P.
X Switch off all electrical consumers.
X Turn the key to position 0 in the ignition
lock and remove it.
X Open the boot/luggage compartment.
X Remove the luggage well (Y page 218). X
Remove the battery cover.
X Remove the negative terminal clamp from
the battery.
X Remove the cover from the positive termi-
nal clamp.
X Remove the positive terminal clamp from
the battery.
X Disconnect the breather hose. Removing the battery
X Disconnect the battery ( Y page 290).
X Loosen the bolt which holds the battery in
place.
X Release the strap and remove the battery. Charging and fitting the battery
G
Risk of injury
Only charge the installed battery with a bat-
tery charger which has been tested and
approved
by Mercedes-Benz. These battery
chargers allow the battery to be charged
while it is still installed. Otherwise, the vehi-
cle's electronic system may be damaged.
Only charge the battery in a well-ventilated
area. As the battery is being charged, gases
can escape and generate minor explosions.
This may injure you and other persons or
cause damage to the paintwork or acid cor-
rosion on the vehicle.
You can obtain information about battery
chargers which allow the battery to be
charged when still installed from a qualified
specialist workshop, e.g. a Mercedes-Benz
Service Centre. G
Risk of injury
There is a risk of acid burns during the
charging process due to the gases which
escape from the battery. Do not lean over
the battery during the charging process.
! Only use battery chargers with a maxi-
mum charging voltage of 14.8 V. Practical advice
* optional
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