i
Remove th ekeyif you park th evehicle
and do no trequire any electrical consum-
ers .The vehicl ewill then use ver ylittle
energy, thus conservin gthe battery.
i If th ebattery is discharged, you mus tuse
th ee mergenc ykey elemen ttounlockthe
vehicle. Disconnecting th
ebattery G
Ris
kofa ccident
If th ebattery is disconnected:
R theb rak eboostin geffec twill no tbea vail-
able. Greate rbrakin gforce will then be
require dand brak epedal travel will be lon-
ger .Ifn eces sary, depress th ebrak epedal
wit hm aximum force.
R thet ransmission is locke dinposition Pon
vehicles wit hautomati ctransmission*
! Always disconnect th ebattery in the
order described below. Never mix up the
terminal clam pdisconnection/connection
order and never mix up th eterminal
clamps. You may otherwise damag ethe
vehicl eelectronics.
X Firmly depress th eparkin gbrak eand on
vehicles wit hautomatic transmission*,
shift th etransmission to position P.
X Switc hoff all electrical consumer s(e.g.
radio, blower, etc.).
X Turn th ekeyto0(Y page 65 )inthe ignition
lock and remove it or make sure tha tno
ignition positio nhasbeen selecte dwith
KEYLESS GO *.In the instrument cluster, all
of the indicator lampsm ust be out.
X Open the bonnet. X
Release clamps 0047on filter box 0046.
X Remove filter box 0046.
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 ( Ypage 275).
X Loosen the bolt which holds the battery in
place.
X Remove the battery. Charging and fitting the battery
G
Risk of injury
Battery acid is caustic. Avoid contact with the
skin, eyesorc lothing.
Charging the battery G
Risk of injury
Only charge the battery in awell-ventilated
area.Ast he 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. Battery
275Practical advice
*optional
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-Seite 275 Z
You can obtain information about battery
chargers which allow the battery to be
charged while still installed from
aqualified
specialis tworkshop, e.g. aMercedes-Benz
Service Centre. G
Risk of injury
There is arisk 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.
! Only charge the installed battery with a
battery charger which has been tested and
approve dbyMercedes-Benz. These battery
chargers allow the battery to be charged
while still installed.
! Only use battery chargers with amaxi-
mum charging voltage of 14. 8V.
! Only charge the battery using the jump-
star tconnection point.
X Open the bonnet.
X Connect the battery charger by its positive
terminal and eart hpoint in the same order
as when connectin gthe dono rbattery in
the jump-startin gprocedure
(Y page 276).
Fitting th ebattery X
Install the battery. To do this ,follow the
steps described in "Removin gthe battery"
(Y page 275 )inreverse order.
X Reconnec tthe battery (Y page 276). Reconnecting th
ebattery
! Always connec tthe battery in the order
described below. Never swap the terminal
clamps .You may otherwise damage the
vehicle electronics. X
Switch off all electrical consumers (e.g.
radio, blower, etc.).
X Connect the positive terminal clamp and
secur ethe cover.
X Connect the negative terminal clamp.
X Connect the breather hose.
X Put the filter box back in place, the nclip in
and close the retainin gclamps.
X Close the bonnet.
i If the battery power supply has been inter-
rupted (e.g. if it has been reconnected), you
must carr yout the followin gtasks:
R set the time
R reset the function for foldin gthe exterior
mirrors in/out automatically* by folding
the mirrors out onc e(Ypage 74) Jump-starting
If your vehicle's battery is discharged, the
engin ecan be jump-started from another
vehicle or from an external battery using jump
leads.
Observe the followin gpoints:
R you may only jump-star twhen the engine
and catalytic converter are cold.
R do not star tthe engin eifthe battery is fro-
zen .Let the battery thaw first.
R jump-startin gmay only be performed from
batteries with anominal voltage of 12 V.
R only use jump leads which have asufficient
cross-section and insulated terminal
clamps.
i Jump leads and further information about
jump-startin gcan be obtained from any
Mercedes-Ben zService Centre.
! Avoid repeated and lengthy starting
attempts.
Do not use arapid-charging devic etostart
the engine. 276
Jump-startingPractical advice
*o
ptional
207_AKB; 2; 3, en-GB
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