Checking and Filling
Not running the vehicle for long periods of
time
Electrical system: malfunction! Please con-
tact Service
The battery will gradually drain if the vehicle
does not run for long periods of time. To ensure
that the vehicle can still be started, the electrical
equipment will be limited or turned off. Some
convenience functions, such as interior lighting
or power seat adjustment, may not be available
under certain circumstances. The convenience
functions will be available again when you start
the engine.
Turn off all electrical equipment that is not need-
ed. If necessary, some equipment will be turned
off automatically. Vehicle functions or driving
stability may be limited. Drive to an authorized
Audi dealer or authorized Audi Service Facility im-
mediately.
Electrical system: low battery charge. Bat-
tery will be charged while driving
The starting ability may be impaired.
Even when electrical equipment is turned off, the
equipment can still drain the battery if the vehi-
cle is not driven for long periods of time. Deep
draining results in a chemical reaction that de-
stroys the inside of the battery. The battery must
be charged every month to prevent this
ðpage 251. Contact an authorized Audi dealer or
authorized Audi Service Facility for more infor-
mation.
– If this message turns off after a little while, the
vehicle battery has charged enough while driv-
ing.
– If the message does not turn off, drive immedi-
ately to an authorized Audi dealer or authorized
Audi Service Facility to have the malfunction
corrected.
WARNING
Winter operation
When there is an electrical system malfunc-
tion, vehicle functions may not work and driv-
ing stability may be limited, which increases
the risk of an accident. Do not continue driv-
ing and turn off the ignition. See an author-
ized Audi dealer or authorized Audi Service Fa-
cility for assistance.
Cold weather places an especially high load on
the 12 volt vehicle battery. Have the battery
checked by an authorized Audi dealer or author-
ized Audi Service Facility before cold weather be-
gins.
Replacing the battery
Applies to: 12 volt vehicle battery
Battery
All work on the battery must only be performed
by an authorized Audi dealer or authorized Audi
Service Facility.
Battery general information
Because of the complex power supply, all work
on batteries such as disconnecting, replacing,
etc., should only be performed by an authorized
Audi dealer or authorized Audi Service Facility
The 12 volt vehicle battery was developed based
on the installation location and is equipped with
safety features. If a 12 volt vehicle battery must
be replaced, ask an authorized Audi dealer or au-
thorized Audi Service Facility about the electro-
magnetic compatibility, size, and the necessary
maintenance, power, and safety standards for
the new 12 volt vehicle battery. The battery vent
on the 12 volt vehicle battery must always be on
the negative terminal side. The battery vent on
the positive terminal side must always be closed.
ð
.
Multiple batteries with different technologies
may be installed in your vehicle:
– Vehicle battery (for example, for starting the
engine, basic power supply) ðpage 250, Safety
precautions
– Auxiliary battery (for example, for recuperation
or optional equipment) ðpage 250, Safety pre-
cautions
When replacing the 12 volt lead-acid vehicle bat-
tery, only use a maintenance-free 12 volt lead-
acid battery that conforms to the TL 825 06 and
249
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