Mercedes-Benz Metris 2021 Operating Instructions Manual page 193

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Keep children at a safe distance.
Observe these Operating Instructions.
Observe the following notes:
Recharge the battery more frequently in the
R
following cases:
You predominantly drive short distances.
-
You predominantly drive at low outside
-
temperatures.
You leave the vehicle parked for a lengthy
-
period.
In order for the batteries to achieve their max‐
imum possible service life, they must always
be sufficiently charged.
Consult a qualified specialist workshop if you
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wish to leave your vehicle parked up for a
long period of time.
When you park the vehicle, remove the key if
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you do not require any electrical consumers.
The vehicle will then use very little energy,
thus conserving battery power.
If your vehicle requires jump-starting, or if you
R
wish to provide jump-starting assistance to
another vehicle, only use the jump-start con‐
nection point in the engine compartment
(
page 191).
/
Installation locations
Your vehicle may be equipped with the following
three batteries, depending on the equipment ver‐
sion:
Starter battery in the seat base of the right-
R
hand front seat
Support battery in the seat base of the right-
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hand front seat
Auxiliary battery in the seat base of the left-
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hand front seat
Breakdown assistance 191
Starting assistance and charging the 12 V
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 can be released.
Always allow a battery to thaw before
#
charging it or performing starting assis‐
tance.
If the warning/indicator lamps do not light up in
the instrument cluster at temperatures around or
below freezing, it is highly probable that the dis‐
charged battery has frozen.
In this case, observe the following points:
Do not give the vehicle starting assistance or
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charge the battery
The service life of a battery that has been
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thawed may be reduced drastically
The starting behavior may deteriorate, partic‐
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ularly at low temperatures
It is recommended that you have a thawed
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battery checked at a qualified specialist work‐
shop
& 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.
Avoid fire, open flames, creating sparks
#
and smoking.
Make sure there is sufficient ventilation.
#
Do not lean over a battery.
#
& WARNING Danger of chemical burns
from the battery acid
Battery acid is caustic.
Avoid contact with the skin, eyes or
#
clothing.
Do not lean over the battery.
#
Do not inhale battery gases.
#
Keep children away from the battery.
#

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