Obser
vethefo llowing points during starting
assis tance and when charging the battery:
R Only use undamaged jump lead/charging
cables with a suf ficient cross-section and
insula tedte rm inal clamps.
R Non- insulated parts of thete rm inal clamps
must not come into con tact wi thother me tal
parts while the jump lead/charging cable is
connected tothe battery/jump-s tart connec‐
tion point.
R The jump lead/charging cable must not
come into contact wi thany parts which may
mo vewhen the engine is running.
R Alw ays make sure that nei ther you nor the
battery is elect rostatically charge d.
R Keep away from fire and naked flames.
R Do not lean overth e batter y.
Obser vethe additional following points when
ch arging the battery:
R Only use battery charge rs tested and
appr oved for Mercedes-Benz.
R Read the battery charge r's operating instruc‐
tions before charging the batter y. Obser
vethe additional following points during
st arting assis tance:
R Starting assis tance may only be pr ovided
using batteries with a nominal voltage of
12 V.
R The vehicles must not touch.
R Petrol engine: only acceptstarting assis‐
ta nce if the engine and exhaust sy stem are
cold. St
arting assi stance and charging the12 V
battery Requ
irements:
R The vehicle is secured with the electric park‐
ing brake.
R Automatic transmission: the transmission
is in position 005D.
R Manual transmission: the transmission is in
neutral.
R The ignition and all electrical consumers are
switched off.
R The bonn etis open. 0007
Fold co ver1 up in the direction of the
ar row. Breakdown assis
tance 439
0007
Slide co ver2 of positive clamp 3onthe
jump-s tarting connection point in the direc‐
tion of the ar row. 0007
Connect positive clamp 3onyour vehicle to
th e positive pole of the donor battery using
th e jump lead/charging cable. Alw ays begin
with positive clamp 3onyour ow nve hicle
fi rs t. 0007
During starting assi stance: start the
engine of the donor vehicle and run at idle
speed. 0007
Connect the negative pole of the donor bat‐
te ry and ear thpoint 4ofyour ow nve hicle
by using the jump lead/charging cable. Begin
with the donor battery firs t. 0007
During starting assi stance: start the
engine of your ow nve hicle. 0007
During thech arging process: start the
ch arging process. 0007
During starting assi stance: letthe engines
ru nfo r se veral minutes. 0007
During starting assi stance: before discon‐
necting the jump lead, switch on an electrical
consumer in your ow nve hicle, e.g. there ar
wind owheater or lighting.
When thest arting assis tance/charging process
is compl ete: 0007
First,re mo vethe jump lead/charging cable
from ear thpoint 4and negative pole of the
donor batter y,then from positive clamp 3
and positive pole of the donor batter y.Begin ea
ch time wi th the conta cts onyour own
ve hicle firs t. 0007
Afterre moving the jump lead/charging
cable, close co ver2 of positive clamp 3. 0007
Close co ver1.
Fu rther information can be obtained at a quali‐
fi ed specialist workshop. Re
placing the 12V battery 0007
Obser vethe no tes on the12 V battery
(0013 page 435).
Mercedes-Benz recommends that you ha vethe
12 V battery replaced at a qualified specialist
wo rkshop, e.g. at a Mercedes-Benz Service
Centre.
Obser vethefo llowing no tes if youwa ntto
re place the battery yourself:
R Alw aysre place a faulty bat tery with a battery
which meets the specific vehicle requ ire‐
ments.
The vehicle is equipped with an AGMtech nol‐
ogy battery (Absorbent Glass Mat) or a li th‐440
Breakdown assis tance
