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192
Intelligent
technology
With the engine turned off
If you listen to the radio, for example, with
the engine turned off or use othe r MMI func-
tions, the battery is being discharged .
If sta rt ing capability is jeopa rdized due to en-
e rgy consumpt ion, t he following warning ap-
pears in the MMI disp lay:
Please start the engine soon or the system
will be turned off.
The warning ind icates that the system will be
turned off automatically after 3 minutes .
If
you wish to continue using the functions, you
have to start the engi ne.
With the engine running
Although electrical energy is generated when
the vehicle is be ing driven, the battery can be-
come discharged . This happens most ly when
little energy is be ing generated a nd a great
deal consumed and the battery's state of
cha rg e is not optimal.
To br ing the energy balance back into equili-
brium, consumers which require especia lly
la rge amounts of energy are t empo rar ily cut
back or switched off. Heating sys t ems in par-
ticular requi re a great dea l of energy . If you
notice, for example , that the heated seats* or
the heated rear window are not heating, they
have been temporar ily cut back or switched
off. These systems will be ava ilable again as
soon as the energy ba lance has bee n restored.
You will a lso notice that engine idle speed has
been increased slightly. This is norma l and not
a cause for concern . By increasing engine idle
speed the add itional energy required is gener-
ated and the batte ry is charged.
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