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With th
e engine
switched off
The battery will d rain if you use fu nctions such as
listening to the radio while the engine is switch-
ed off.
The vehicle 's ability to start may be impaired by
the energy use, a message will appear in the In-
fotainment
system disp lay
.
The message ind icates that the system will
switch off au
t
omati cally soon. If you wou ld like
to continue using the funct ions, you must
st
art
the engine.
With the engine running
Although electrical energy is gene rated whi le
d riving, the batte ry can d rain. This can happen
when little energy is generated,
and m uch is used
and the charge leve
l
of the battery is not optima
l.
To restore the balance of energy, components
that requ ire large amou nts of energy are tempo-
rari ly sca led bac
k
or switched off
.
Heating sys-
t
ems in part icu lar require a g rea
t d
eal of ene rgy.
If
yo
u
no
t
ice, for example, that the seat heating*
or rear w indow defroster is not working, then it
has been temporar ily reduced or switched off.
These systems are available again as soon as the
energy supp ly has been restored.
In addition
,
you may notice that the idle speed
has slightly increased
.
That is norma
l
and no
cause for concern. Due to the increased idling
speed, the add itiona
l
required energy w ill be
generated and the battery will be charged.
Intellig
e
nt Technology
165
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