Mercedes-Benz Sprinter 2019, Operating Instructions Manual

Page: 194 / 298

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Make sure that the positive terminal of
the connected battery does not come
into contact with vehicle parts.
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Never place metal objects or tools on a
battery.
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When connecting and disconnecting the
battery, you must observe the described
order for the battery clamps.
#
When giving starting assistance, always
make sure that you only connect battery
terminals with identical polarity.
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During starting assistance, you must
observe the described order for con‐
necting and disconnecting the jumper
cables.
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Do not connect or disconnect the bat‐
tery clamps while the engine is running.
&
WARNING Risk of explosion during
charging process and starting assistance
During the charging process and starting
assistance, the battery may release an explo‐
sive gas mixture.
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Avoid fire, open flames, creating sparks
and smoking.
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Make sure that there is sufficient venti‐
lation during the charging process and
during starting assistance.
#
Do not lean over a battery.
&
WARNING Risk of explosion from a fro‐
zen battery
A discharged battery may freeze at tempera‐
tures slightly above or below freezing point.
During starting assistance or battery charg‐
ing, battery gas may be released.
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Always thaw a frozen battery out first
before charging it or performing starting
assistance.
If the warning/indicator lamps do not light up in
the instrument display around or below freezing
point, it is very likely that the discharged battery
has frozen.
In this case, observe the following points:
R
do not give the vehicle starting assistance or
charge the battery
R
the service life of a battery that has been
thawed may be reduced drastically
R
the start-up behavior may deteriorate, partic‐
ularly at low temperatures
R
it is recommended that you have a thawed
battery checked at a qualified specialist work‐
shop
* NOTE Damage caused by numerous or
extended attempts to start the engine
Numerous or extended attempts to start the
engine may damage the catalytic converter
due to non-combusted fuel.
#
Avoid numerous and extended attempts
to start the engine.
Observe the following points during starting
assistance and when charging the battery:
R
only use undamaged jumper cables/charging
cables with a sufficient cross-section and
insulated terminal clamps
R
non-insulated parts of the terminal clamps
must not come into contact with other metal
parts while the jumper cables/charging
cables are connected to the battery/jump-
start connection point
R
the jumper cables/charging cable must not
come into contact with any parts which may
move when the engine is running
R
always make sure that neither you nor the
battery is electrostatically charged
R
always keep away from fire and open flames
R
do not lean over a battery
R
when charging: only use a battery charger
that has been tested and approved by
Mercedes-Benz and read the operating
instructions for your charger before charging
the battery.
Observe the additional following points during
starting assistance:
R
starting assistance may only be provided
using batteries with a nominal voltage of 12 V
R
the vehicles must not touch each other
R
vehicles with a gasoline engine: only per‐
form starting assistance when the engine and
exhaust system are cold
#
Vehicles with a battery main switch: check
whether the battery main switch is switched
on (
→
page 114).
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Secure the vehicle using the parking brake.
192 Breakdown assistance