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The recharging function
is active in the following
situations:
While the vehicle is in motion:
The 12 V battery is recharged
if necessary.
During the charging process:
The 12 V battery is recharged
in addition to the high-voltage
battery.
During periods of parking:
The state of charge of the
12 V battery is checked ev-
ery other day and recharged if
necessary. During recharging,
noises of the fan and coolant
pump may be audible.
If the 12 V battery had to be
recharged three times in a row
during an extended parking
period, On-board battery
state. No restrictions.
Have battery checked by
a specialist workshop.
appears when you turn
on standby mode. Further
information in the "Displayed
values" chapter.
If the state of charge of the
high-voltage battery falls be-
low a critical threshold value,
the 12 V battery cannot be
recharged. A sufficient state of
charge of the high-voltage bat-
tery must be ensured so that
the recharging function can al-
ways be activated as necessary.
Charge 12 V battery
ATTENTION
Charging of the connected
12 V battery on the battery
terminals
Damage to the vehicle's elec-
tronics
Disconnect the 12 V battery
before charging on the bat-
tery terminals.
ATTENTION
Charging a fully discharged
12 V battery using the 12 V
power socket
Damage to vehicle electronics
A fully discharged 12 V bat-
tery (battery voltage less
than 12 V; indicator lights
and multifunction display
remain off when ignition
is switched on) must al-
ways be charged directly
at the terminals of the bat-
tery when disconnected.
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