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back or switched off. This reduces energy use and
ensures the vehicle will be ab le to start after long
periods of time . Some convenience functions,
such as interior lighting or power seat adjust-
ment, may not be available under certa in circum-
stances . These convenience functions will be
available aga in once you switch the ignition on
and start the eng ine.
With the engine switched off
The battery will drain if you use functions such as
listening to the rad io while the engine is switched
off.
The vehicle's ability to start may be impaired by
the energy use, a message will appear in the In-
fotainment system d isp lay.
The message indicates that the system will
switch off automatically soon. If you would like
to continue using the funct ions, you must start
the eng ine.
With the engine running
Although electrical energy is generated whi le
driving, the battery can drain. This can happen
when little energy is generated, and much is used
and the charge level of the battery is not optimal.
To restore the balance of energy, components
that require large amounts of energy are tempo-
rarily sca led back or switched off . Heating sys-
tems in particu lar require a great deal of energy .
If you notice, for example, that the seat heating*
or rear window defroster is not worki ng, then it
has been tempo rar ily reduced or sw itched off.
These systems are available aga in as soon as the
ene rgy balance has been restored.
In addition, you may notice that the idle speed
has slightly increased . That is normal and no
cause for concern. Due to the increased idling
speed , the additional requ ired energy w ill be gen -
e rat ed and the battery will be charged.
Intelligent
Technology
195
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