Mercedes-Benz GLE Coupe 2023 Operator's Manual page 343

& WARNING Risk of explosion due to a mix-
ture of explosive gases
A mixture of explosive gases can escape from
the battery during charging and jump starting.
Fire, open flames, smoking and creating
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sparks must be avoided.
Make sure that there is sufficient ventila-
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tion.
Do not stand over the battery.
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& WARNING Risk of explosion from a frozen
battery
A discharged battery may freeze at tempera-
tures slightly above or below freezing point.
During starting assistance or battery charging,
battery gas can be released.
Always allow a battery to thaw before
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charging it or performing starting assis-
tance.
If the indicator/warning lamps on the instrument
cluster do not light up at low temperatures, it is
very likely that the discharged battery has frozen.
In this case, you may neither jump-start the vehi-
cle nor charge the battery.
The service life of a battery that has been thawed
may be dramatically shortened. The starting char-
acteristics may be impaired, especially at low
temperatures.
It is recommended that you have a thawed battery
checked at a qualified specialist workshop.
All vehicles
* 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
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to start the engine.
Observe the following points during starting assis-
tance and when charging the battery:
Use only undamaged jumper cables/charging
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cables with a sufficient cross-section and
insulated terminal clamps.
Breakdown assistance 341
Non-insulated parts of the terminal clamps
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must not come into contact with other metal
parts while the jumper cable/charging cable
is connected to the battery/jump-start con-
nection point.
The jumper cable/charging cable must not
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come into contact with any parts that may
move when the engine is running.
Always make sure that neither you nor the bat-
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tery is electrostatically charged.
Keep away from fire and naked flames.
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Do not lean over the battery.
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Observe the additional following points when
charging the battery:
Use only battery chargers tested and
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approved for Mercedes-Benz.
Read the battery charger's operating instruc-
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tions before charging the battery.