Audi A8 1994 - Adaption Following Replacement of Dash Panel Insert and Engine Control Unit

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◂ Test instruments Skip Print Help
- Touch "Done" key.
- This concludes adaption of engine control unit to immobilizer and vehicle can be started.
Notes:
◆ Follow instructions on display if fault message appears.
◆ -> 3 attempts at entering correct PIN can be made without a waiting period. The next 3 attempts are only
possible after at least 10 minutes. For this, leave ignition on and exit from self-diagnosis by touching diag‐
nostic function "06 - End output" in list -1-.
◆ The waiting time is doubled up to a maximum of 255 minutes after every 3 further incorrect entries.
2.14 - Adaption following replacement of dash panel insert and engine control unit
In the event of simultaneous destruction of dash panel insert and engine control unit (caused for example by
overvoltage) and if immobilizer identification number can no longer be read out, all vehicle keys must additionally
be changed on replacing dash panel insert and engine control unit.
Reason: The old keys are blocked following adaption to immobilizer and cannot be matched to any other im‐
mobilizer.
The immobilizer in the new dash panel insert contains a different arithmetic rule for the variable code. This new
rule is written on adaption into the engine control unit and at the same time into the transponder of the new
vehicle keys. The keys are then blocked.
Note:
Replacement of all vehicle keys is not necessary if immobilizer identification number can still be read out of one
of the control units to be replaced. Control units are then to be replaced consecutively.
Requirements:
• Vehicle diagnostic, testing and information system VAS 5051 connected up and vehicle self-diagnosis se‐
lected => Page 162
• Ignition on
Sequence of operations
- Start immobilizer self-diagnosis => Page 74 .
Audi A8 1994 ➤
Electrical system Self-diagnosis 02.99 ➤ - Edition 05.2002
100 01 - Self-diagnosis