2010 MERCEDES-BENZ SLS COUPE key battery

gloves, an apron and a face
mask.
Immediately rinse acid
splashes off with clean
water. Consult a doctor if
necessary.
Wear eye protection.
Keep children away.
Observe this Owner's Man-
ual.
H
Environmental note
Do not dispose of batteries in the household
rubbish. Dispose of defective batteries in an
environmentally responsible manner. Take
them to a Mercedes-Benz Service Centre or
to a special collection point for old batteries. G
Risk of injury
For 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 prevent vehi-
cle occupants from suffering acid burns
should the battery be damaged in the event
of an accident.
To prevent acid burns, observe the following
safety notes when handling batteries:
R do not lean over the battery.
R do not place any metal objects on a battery.
Otherwise, you could cause a short circuit
and the battery's gas mixture could ignite.
R make sure that you do not create an elec-
trostatic charge, e.g. by wearing synthetic
clothing or as a result of friction on fabrics.
Therefore, you should not pull or slide the
battery over carpets or other synthetic
materials. R
never touch the battery first. To discharge
a possible electrostatic charge, step 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 electro-
static charge or due to flying sparks.
! Switch off the engine and ensure that no
ignition position has been selected before
detaching the battery terminals. All indica-
tor lights must be off in the instrument
cluster. Otherwise, you may destroy elec-
tronic components such as the alternator.
i Mercedes-Benz recommends that you
have work involving the battery, e.g.
removal, charging and replacement, car-
ried out at a qualified specialist workshop,
e.g. a Mercedes-Benz Service Centre.
Installation location of the battery The battery is fitted on the front bulkhead on
the right-hand side of the vehicle when
viewed in the direction of travel.
0001
Negative terminal
0002 Positive terminal
0015 Breather hose
i Set the Start/Stop button to ignition posi-
tion 0when you park the vehicle and you
do not need any electrical consumers .The
vehicle will then use very little energy, thus
conserving battery power.
i If the battery is discharged, you must use
the emergency key element to unlock the
vehicle. Battery
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Disconnecting the battery
G
Risk of accident
If the battery is disconnected:
R the brake boosting effect will no tbe avail-
able. Greater braking force will then be
required and brake pedal travel will be lon-
ger. If necessary, depress the brake pedal
with full force.
R the transmission is locked in position P.
! Always disconnect the battery in the
order described below. Never mix up the
terminal clamp disconnection/connection
order and never mix up the terminal
clamps. You may otherwise damage the
vehicle electronics.
Disconnecting the battery X
Press the electric parking brake handle.
X Shift the transmission to Pwith the button
in the centre console.
X Switch off all electrical consumers (e.g.
radio, blower etc.).
X Set the Start/Stop button to key position
0(Y page 202).
X To disconnect the battery: open the bon-
net.
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 batter y(Ypage 336).
The bar over the battery prevents it from slip-
ping.
X Loosen the screw on the bar.
X Remove the bar. X
Loosen and remove the two screws on the
clamping plate.
X Remove the clamping plate.
X Remove the battery. Charging and fitting the battery
G
Risk of injury
Only charge the battery in a well-ventilated
area. As the battery is being charged, gases
can escape and generate minor explosions.
This could injure you and other persons or
cause damage to the paintwor koracid cor-
rosion on the vehicle.
You can obtain information abou tbattery
chargers which allow the battery to be
charged while still installed from a qualified
specialist workshop, e.g .aMercedes-Benz
Service Centre. G
Risk of injury
There is a risk 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. G
Risk of injury
Battery acid is caustic. Avoid contact with the
skin, eyes or clothing.
! Never charge the batter ywhen it is instal-
led unless the battery charger has been
tested and approved by Mercedes-Benz.
These battery chargers allow the battery to
be charged while it is still installed.
! Only use battery chargers with a maxi-
mum charging voltage of 14.8 V.
X Charge the battery. Observe the notes in
the operating instructions for your battery
charger.
X Refit the charged battery.
To do this, follow the steps described in
"Removing the battery" (Y page 336) in
reverse order. 336
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Towing the vehicle with the rear axle
raised !
The engine must be switched off (key in
ignition lock in position 0or position 1) if
the vehicle is being towed with the front
axle raised or if the parking brake is being
tested on a dynamometer. Otherwise,
intervention by ESP ®
could damage the
brake system.
Towing the vehicle with atow rope or
tow bar G
Ris
kofa ccident
If the brake system is malfunctioning, you
must use a rigid tow bar to tow the vehicle.
Before towing away, mak esure that the steer-
ing can be moved and is not locked.
If there is a malfunctio ninthe power supply
or the vehicle's electrical system, you must
not tow the vehicle. G
Risk of accident
The following can occur if the vehicle is towed:
R the engine may not start.
R the on-board electronics may fail.
R the battery voltage may drop too much.
In these cases, the rear axle will be locked.
As a result, you might lose control of the vehi-
cle, cause an accident and injure yourself and
others.
! Use the key instead of the Start/Stop
button when towing the vehicle.
Start the engine and keep it running. Turn
the key to position 2in the ignition. Set the
transmission selector lever to N.Make sure
that you then leave the key in position 2.
Chec kthe transmission position in the
instrument cluster. When towing the vehicle, proceed as follows:
X
Insert the key into the ignition lock
(Y page 203).
X Start the engine and leave the key in the
ignition.
X Move the transmission selector lever to N.
X Check the transmission position in the
instrumentc luster display (Y page 227).
X Leave the engine running during the entire
towing procedure.
Also observe the following notes:
R When towing, observe the legal require-
ments in all countries concerned.
R If the engine does not start, try jump-start-
ing it (Y page 338). Tow-starting the vehicle
is not permitted.
R If it is not possible to jump-star tthe vehicle,
have it transported to the nearest qualified
specialist workshop, e.g. aMercedes-Benz
Service Centre.
R If the transmission has been damaged,
have the vehicle transported to the nearest
qualified specialist workshop, e.g. a
Mercedes-Benz Service Centre. Observe
the display messages in the instrument
cluster.
R If you are towing the vehicle over a longer
distance, this must be done with the rear
axle raised.
! Make sure that the electric parking brake
is released. If the electric parking brake is
faulty, visit a qualified specialist workshop.
Mercedes-Benzr ecommends that you use
a Mercedes-Benz Service Centre.
! When towing, pull away slowly and
smoothly. If the tractive power is too high,
the vehicles could be damaged.
! Only secure the tow cable or towing bar
to the towing eyes. You could otherwise
damage the vehicle.
! Do not use the towing eye for recovery,
as this could damage the vehicle. If in
doubt, recover the vehicle with a crane. 340
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