Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not
permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability
with respect to the correctness of information in this document. Copyright by AUDI AG.
-> Display on VAS 5051:
- From list -1- select diagnosis function "06 - End of output".
- Switch off ignition.
- Insert next key in ignition lock and switch on ignition. Fault lamp lights when ignition is switched on and goes
out after approx. 1 second, indicating that this key has also been matched.
- Repeat procedure until all keys have been matched. With the last key, the fault lamp goes out approx. 2 s
following successful matching and a brief confirmation signal is given (lamp off for 0.5 s, lamp on for 0.5 s,
lamp off).
- On vehicle key matching, the fixed code of the respective key (transponder) is matched to the immobilizer.
Furthermore, the arithmetic rule for the variable code is written into each key and blocked. Accordingly, with
immobilizer III, keys can only be matched if they have the correct arithmetic rule for the variable code (key
already matched to system) or if they have still to be blocked (replacement key). Once they have been
matched, vehicle keys cannot be used with a different immobilizer system.
- Following key matching, interrogate fault memory => Page 168 .
If there are no faults stored, then "Key matching" function has been successfully completed.
Ignition key matching is terminated automatically:
◆ On reaching the number of keys to be matched
◆ If the ignition is switched on again and left switched on for more than 1 s using a key which has already
been matched (fault is stored)
◆ If the permitted matching time of 30 s per key as of switching on the ignition is exceeded (fault is stored)
◆ If a fault is stored during key matching
6.12 - Procedure in the event of loss of keys
- Make/order replacement ignition keys on the basis of the lock number.
- Match all vehicle keys => Page 176 .
- On the appropriate vehicles, match all remote control keys to central locking control unit.
=> Body Self-diagnosis; Repair Group 01; Central Locking Self-diagnosis; Matching of/cancelling remote con‐
trol keys Central Locking Self-diagnosis Matching of/cancelling remote control keys
6.13 - Adaption following replacement of dash panel insert
Notes:
◆ The dash panel insert (with integrated immobilizer) is adapted to the engine control unit. Adaption to the
engine control unit must be performed if the dash panel insert is replaced.
◆ After adapting dash panel insert to engine control unit, vehicle key matching is required => Page 176 .
◆ If there is no authorised ignition key available, engine control unit and all keys must also be replaced=>
Page 192 .
Requirement:
• Vehicle diagnostic, testing and information system VAS 5051 connected up and vehicle self-diagnosis se‐
lected => Page 1
Sequence of operations
- Insert old (authorised) ignition key in ignition lock and switch on ignition.
- Establish immobilizer identification number by starting immobilizer self-diagnosis at old dash panel insert
=> Page 166 .
Audi A3 1997 ➤
Electrical system Self-diagnosis - Edition 02.2002
182 01 - Self-diagnosis
To Next Page
Loading...
