2004-2011 Mercedes A Class 4 Door Practical advice -> Jump-starting User Manual
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Practical advice -> Jump-starting for Your Mercedes A Class 4 Door Second Generation (2004-2011)

Practical adviceJump-startingG Risk of injuryReconnecting the batteryJump-startingBattery acid is caustic. Avoid contact with! Always reconnect the battery in theIf your vehicle's battery is discharged, thethe skin, eyes or described below. Never swap theengine can be jump-started from anotherterminal clamps. You may otherwise dam-vehicle or from an external battery using jump! Only charge the installed battery with aage the vehicle charger which has been tested andX Switch off all electrical the following points:approved by Mercedes-Benz. These batterychargers allow the battery to be chargedX Connect the positive terminal clamp andR Jump-starting may only be performed whenwhile it is still installed. However, the bat-secure the engine and catalytic converter are must always be disconnected first.X Connect the negative terminal clamp.R Do not start the engine if the battery is fro-X Connect the breather hose. Make sure thatzen. Let the battery thaw first.! Only use battery chargers with a maxi-a cell cap is fitted on the side.R Jump-starting may only be performed frommum charging voltage of 14.8 with a nominal voltage of 12 V.i If the battery power supply has been inter-X Charge the battery. Observe the notes inrupted (e.g. if it has been reconnected), youR Only use jump leads which have a sufficientthe operating instructions for your batterymust carry out the following tasks:cross-section and insulated terminalcharger.R set the time ( Y page 109).clamps.X Refit the charged battery.R reset the function for folding the exteriorTo do this, follow the steps described ini Jump leads and further information aboutmirrors in/out automatically* by folding"Removing the battery" ( Y page 265) injump-starting can be obtained from anythe mirrors out once ( Y page 72).reverse -Benz Service Centre.R reset the side windows ( Y page 85)! Avoid repeated and lengthy startingatt
Practical advice
Jump-starting
G Risk of injury
Reconnecting the battery
Jump-starting
Battery acid is caustic. Avoid contact with
! Always reconnect the battery in the
If your vehicle's battery is discharged, the
the skin, eyes or clothing.
sequence described below. Never swap the
engine can be jump-started from another
terminal clamps. You may otherwise dam-
vehicle or from an external battery using jump
! Only charge the installed battery with a
age the vehicle electronics.
leads.
battery charger which has been tested and
X Switch off all electrical consumers.
Observe the following points:
approved by Mercedes-Benz. These battery
chargers allow the battery to be charged
X Connect the positive terminal clamp and
R Jump-starting may only be performed when
while it is still installed. However, the bat-
secure the cover.
the engine and catalytic converter are cold.
tery must always be disconnected first.
X Connect the negative terminal clamp.
R Do not start the engine if the battery is fro-
X Connect the breather hose. Make sure that
zen. Let the battery thaw first.
! Only use battery chargers with a maxi-
a cell cap is fitted on the side.
R Jump-starting may only be performed from
mum charging voltage of 14.8 V.
batteries with a nominal voltage of 12 V.
i If the battery power supply has been inter-
X Charge the battery. Observe the notes in
rupted (e.g. if it has been reconnected), you
R Only use jump leads which have a sufficient
the operating instructions for your battery
must carry out the following tasks:
cross-section and insulated terminal
charger.
R set the time ( Y page 109).
clamps.
X Refit the charged battery.
R reset the function for folding the exterior
To do this, follow the steps described in
i Jump leads and further information about
mirrors in/out automatically* by folding
"Removing the battery" ( Y page 265) in
jump-starting can be obtained from any
the mirrors out once ( Y page 72).
reverse order.
Mercedes-Benz Service Centre.
R reset the side windows ( Y page 85)
! Avoid repeated and lengthy starting
attempts.
Never start the vehicle using a rapid battery
charger.
* optional
266
Practical adviceJump-startingG Risk of injuryX Electrical consumers can be switched onagain. Do not, however, switch on the lightsThere is a risk of acid burns when jump-as this places too heavy a load on the bat-starting a vehicle due to the gases from the battery. Do not lean overX Remove the jump lead from earththe battery while the engine is being jump-point 4 and negative terminal 3 first, from positive terminals 1 and 2,G Risk of explosioneach time disconnecting from the batteryon your own vehicle escaping from the battery duringjump-starting may cause minor explosions.X Have the battery checked at a qualifiedAvoid creating sparks. Keep naked flamesspecialist workshop, e.g. a Mercedes-Benz1 Positive terminal of donor batteryaway from the battery, and do not Centre.2 Positive terminal on your vehicleComply with safety precautions and take3 Negative terminal of donor batteryprotective measures when handling batter-4 Negative terminal on your vehicleies. You will find these under "Battery" inthe index.X Open the battery cover ( Y page 264).X Connect positive terminal 2 on your vehi-X Make sure that the two vehicles do notcle to positive terminal 1 of the donor using the jump lead, beginning withX Apply the parking own battery.X Manual transmission: engage neutral.X Start the engine of the donor vehicle andX AUTOTRONIC*: move the DIRECT SELECTrun it at idling lever to P.X Connect negative terminal 3 of the donorX Switch off all electrical to negative terminal 4 of yourvehicle's battery using the jump lead, con-X Open the bonnet ( Y page 171).necting the jump lead to the donor Start the engine.* optional267
Practical advice
Jump-starting
G Risk of injury
X Electrical consumers can be switched on
again. Do not, however, switch on the lights
There is a risk of acid burns when jump-
as this places too heavy a load on the bat-
starting a vehicle due to the gases which
tery.
escape from the battery. Do not lean over
X Remove the jump lead from earth
the battery while the engine is being jump-
point 4 and negative terminal 3 first,
started.
then from positive terminals 1 and 2,
G Risk of explosion
each time disconnecting from the battery
on your own vehicle first.
Gases escaping from the battery during
jump-starting may cause minor explosions.
X Have the battery checked at a qualified
Avoid creating sparks. Keep naked flames
specialist workshop, e.g. a Mercedes-Benz
1 Positive terminal of donor battery
away from the battery, and do not smoke.
Service Centre.
2 Positive terminal on your vehicle
Comply with safety precautions and take
3 Negative terminal of donor battery
protective measures when handling batter-
4 Negative terminal on your vehicle
ies. You will find these under "Battery" in
the index.
X Open the battery cover ( Y page 264).
X Connect positive terminal 2 on your vehi-
X Make sure that the two vehicles do not
cle to positive terminal 1 of the donor bat-
touch.
tery using the jump lead, beginning with
X Apply the parking brake.
your own battery.
X Manual transmission: engage neutral.
X Start the engine of the donor vehicle and
X AUTOTRONIC*: move the DIRECT SELECT
run it at idling speed.
selector lever to P.
X Connect negative terminal 3 of the donor
X Switch off all electrical consumers.
battery to negative terminal 4 of your
vehicle's battery using the jump lead, con-
X Open the bonnet ( Y page 171).
necting the jump lead to the donor battery
first.
Z
X Start the engine.
* optional
267

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