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200
Intelligent
technology
critical if the engine is not running and electri-
cal components are turned on. In this in-
stance energy is being consumed but none is
being generated.
It is in precisely these situations that you wi ll
notice energy management actively regulat-
ing the distribut ion of energy.
Vehicle stands for an extended period
If you do not drive your vehicle over a period
of several days or weeks, electrical compo-
nents are gradually cut back or switched off.
This reduces energy consumption and main-
tains starting capabili ty over a longer period.
Some of the convenience functions may not
operate, such as the inter ior lights or the
power seat adjustment. The convenience
functions will be available again when you
switch on the ignition and start the engine.
With the engine turned off
If you listen to the radio, for example, with
the engine turned off or use other MMI func-
tions, the battery is being discharged .
If starting capability is jeopardized due to en-
ergy consumpt ion, the following warning ap-
pears in the MMI display:
Please start the engine soon or the system
will be turned off.
The warning indicates that the system will be
turned off automatically after 3 minutes. If
you wish to continue using the functions, you
have to start the engine.
With the engine running
Alt hough elect rical energy is generated when
the vehicle is being driven, the battery can be-
come discharged. This happens most ly when
little energy is being generated and a great
deal consumed and the battery 's state of
charge is not optimal.
To bring the energy balance back into equili-
brium, consumers which require especially
large amounts of energy are temporarily cut
back or switched off. Heating systems in par-
ticular requ ire a great deal of energy. If you
notice, for example, that the heated seats* or
the heated rear window are not heating, they
have been temporarily cut back or switched
off. These systems will be available again as
soon as the energy balance has been restored.
You wi ll also notice that engine idle speed has
been increased slightly. This is normal and not
a cause for concern. By increasing engine idle
speed the additional energy required is gener-
ated and the battery is charged.
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