dead battery AUDI A4 AVANT 2008 Owners Manual

Master key with remote control
The remote control allows you to lock or unlock the
vehicle electronically.
Fig . 46 Fold-up master
key with remote
control
-To fold the key out and back in place, press the release
button
~ fig . 46 .
Th e transmitt er and battery are located in the head o f the remo te
control. The receiver is located inside the vehicle. The maximum
effec tive range depends on several things. Remember, if the battery
is weak, the effective range decreases.
If you need to replace the remote control , o r if you need to have it
repaired, you must see your authorized Audi dealer. Only then can
you use the key again.
[ i] Tips
• If the ignition is switched on, the remote control system is deac­
tivated .
• The remote control system can be affected by other systems
operating in the same frequency range close to the vehicle, such as
mobile telephones, television broadcasting stations, etc. •
Controls and equip­
ment
Opening and closing
Check light in remote master key
The check light in the remote master key indicates the
state of charge of the battery.
State of master key battery
Fig . 47 Check light in
the master key
When a button is pressed , the check light flashes=:. fig . 47 (arrow) .
If the check light does not come on or flash, the battery is dead and
has to be replaced.
Ba ttery
replacem ent =:. page 54. •
irechnical data

Opening and clo sing
Master key battery replacement
Each master key contains a battery housed under the
cover.
F ig. 48 Mas ter key:
o p enin g the cover
We recommend having the battery changed by an autho­
rized dealership. However, if you wish to replace the dead
battery yourself, proceed as follows:
- Pry apart the
base~ fig. 48 @ and the cover ® car efully
with a coin .
- Remove the cover (arrow).
- Remove the dead battery from the cover .
- Install the new battery. Please make certain t hat the"+"
sign on the battery faces down . Correct polarity is shown
on the cover.
- Place the cover w ith the new battery on the key base and
press both parts together.
ffi For the sake of the environment
Dispose of dead batteries properly so as not to pollute the environ­
ment .
[ i ] Tip s
The replacement battery must be the same specification as the
original. •
Electronic immobilizer
The immobilizer prevents y our vehicle from being started
b y u nau thor ized pers ons.
Inside the key head there is a computer ch ip. Th is ch ip automatically
deactivates the e lectronic immobilizer when you insert the key in
the ignit ion lock. When you remove the key from t he ignition lock,
the electron ic immobili zer is automatical ly activated once again .
[ i ] Tips
• Your engine can only be started using the factory -equipped key
=> page 16.
• You may not be able to start your vehicle if an ignition key of a
different vehicle make is also located on your set of keys. •