182 Checking and filling
Have the battery checked when you take your
vehicle in for service. You are well advised to
replace a battery that is older than S years.
Disconnecting the battery terminals
Some vehicle functions (power window regu-
lators, for example) are lost if the battery ter-
minals are disconnected. These functions have
to be relearned after the battery terminals are
connected again. To prevent this, the battery
should only be disconnected from the vehicle
elec t rical system when absolutely necessary
for repairs .
Vehicles not driven for long periods
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 capability over a longer period
r:::.> page 153. Some of the convenience func-
tions may not operate, such as the interior
lights or power seat adjustment. The conven-
ience functions will be available again when
you switch on the ignition and start the en-
gine.
Winter operation
During the winter months, battery capacity
tends to decrease as temperatures drop . This
is because more power is also consumed while
starting , and the headlights, rear window de-
fogger, etc., are used more often.
Avoid unnecessary power consumption, par-
ticularly in city traffic or when traveling only
short distances. Let your authorized Audi
dealer check the capacity of the vehicle bat-
tery before winter sets in
r::!> page 185. A well
charged battery will not only prevent starting
problems when the weather is cold, but will
also last longer .
Replacing battery
The new battery must have the same capaci-
ty, voltage (12 volts), amperage, construction
and plug sealing, as the original battery. Spec-
ifications are listed on the battery housing.
Batteries specially developed by Audi fulfill
the maintenance, output, and safety require-
ments.
When installing the battery, make sure the ig-
nition and all electrical consumers are switch-
ed off
¢ (i) .
We recommend that you use maintenance-
free or
cycle-resistant/leak-proof batteries
according to the standards TL 825 06 (from
April 2008) and VW 7 SO 73 (from April
2010).
Replacing the battery should be carried by a
qualified workshop. Please follow the instruc-
tions on the battery cover.
(D Note
- All work on the battery requires techni-
cal knowledge . Please contact an Audi
dealership or another authorized facility
for questions about the battery - danger
of acid burns and explosion hazard!
- The battery must not be opened! Do not
try to change the battery's liquid level,
otherwise detonating gas will escape
from the battery - explosion hazard!
- The AGM battery in the luggage com-
partment cannot leak, because the elec-
trolyte for this battery is absorbed into a
special glass mat. This leak-proof battery
must not be replace with a conventional
battery.
- Make sure the ventilation hose on the
side of the battery is connected, other-
wise fumes or battery acid can leak out .
- Battery holder and terminals always
have to be secured correctly.
- Before all work on the battery follow the
warnings below r:!> A in Working on the
battery on page 183.
@ For the sake of the environment
Because of the problem of proper disposal
of a battery, we recommend your author-
ized Audi dealer change the battery for
you. Batteries contain sulfuric acid and
lead and must always be disposed of prop-
erly in compliance with all environmental ..,.
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