Audi TT 2012 Owner's Manual page 82

160 Intelligent technology
than is being generated and ensures an opti-
mal state of charge for the battery.
i
Tips
- But even energy management cannot
negate the limits of physics. Consider
that the power and life of a battery are
limited.
- If starting ability is threatened, you are
informed bya warning
q
page 160,
Driver natification in the instrument
c/uster display.
What you should know
The highest priarity is given to maintaining
starting capability.
The battery is severely taxed in short-distance
driving, in city traffic and during the cold time
of year. Abundant electrical energy is re-
quired, but only a little is generated. It is also
critical ifthe 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 II
notice energy management actively regulat-
ing the distribution 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 eut back or switched off.
This reduces energy consumption and main-
tains starting capability over a longer period.
Take into consideration that when you unlock
your vehicle, some convenience functions,
such as the remote key or power seat adjust-
ment, may not be available. The convenience
functions will be available again when you
turn on the ignition and start the engine.
With the engine turned off
Ifyou listen to the radio, for example, with
the engine turned off, the battery is being dis-
charged.
If starting capability is jeopardized due to en-
ergy consumption, a message appears in the
driver information display.
You have to start the engine to charge the
battery.
With the engine running
Although electrical energy is generated wh en
the vehicle is being driven, the battery can be-
come discharged. This happens mostly 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 eut
back or switched off. Heating systems in par-
ticular require a great deal of energy. Ifyou
notice, for example, that the heated seats* or
the heated rear window are not heating, they
have been temporarily eut back or switched
off. These systems will be available again as
soon as the energy balance has been restored.
You will 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 ene"rgy required is gener-
ated and the battery is charged.
Driver notification in the instrument~
cluster display •
If battery power drops into the range where it
can limit the ability of the engine to start, this
is shown in the instrument cluster display
with the following driver message:
ri1
Low battery charge: battery will be
charged while driving
This notification reminds you that the starting
capability of the engine may be limited. As
soon as you start driving again, the battery
will be recharged and the notification will go
out.
Driver notification appears and goes out
again
Ifthis driver notification appears after the ig-
nition is turned on or while driving and it goes
out again after a while, the battery has been
adequately recharged.
Driver notification appears and does not
go out again
Ifthis driver notification appears after the ig-
nition is turned on or while driving and does
not go out again, the battery's state of charge
is not in the optimal range. Starting ability is
restricted. Have the battery checked as soon
as possible by an authorized Audi dealer or
qualified workshop.
Intelligent technology 16l