Audi Workshop Service and Repair Manuals

Notes:

• ◆ The engine control unit is matched to the dash panel insert (with integrated immobilizer). Adaption to the immobilizer must be performed if the engine control unit is replaced.
• ◆ If there is no authorised ignition key available, all keys must be replaced.

Requirement:

• ● Vehicle diagnostic, testing and information system VAS 5051 connected up and vehicle self-diagnosis selected => Page 01-3

Sequence of operations

• ‒ Insert old (authorised) key in ignition lock.
• ‒ Establish immobilizer identification number by starting immobilizer self-diagnosis => Page 01-241.
• ‒ On the basis of the 14-position immobilizer identification number, request 7-digit PIN from appropriate Sales Centre/importer.

Note:

The PIN is only valid for one day, after which a new number has to be requested. The PIN is of no use to the customer or other dealerships.

→ Display on VAS 5051:

• ‒ From list -1- select diagnosis function "Release (PIN)".

• ‒ Touch "Ready" key.

• ‒ Touch key
  "Press here to display entry keypad".

• ‒ Use keypad to enter previously established 7-digit PIN.
• ‒ Touch ▸ key.

• ‒ Check entry and then touch "Yes" key.
• ‒ Incorrect PIN entry can be corrected by touching "No" key.

• ‒ Touch "Ready" key.
• ‒ When this display appears, fault lamp in dash panel insert lights and immobilizer has been released

Notes:

• ◆ Heed 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 diagnosis function "06 - End of output" in list -1-.
• ◆ The waiting time is doubled up to a maximum of 255 minutes after every 3 further incorrect entries.

Once immobilizer has been released:

→ Display on VAS 5051:

• ‒ From list -1- select diagnosis function "10 - Adaption".

→ Display on VAS 5051:

•     1 -    Enter channel number

• ‒ Use keypad -2- to enter "00" for "Adaption channel 0" and confirm by touching Q key.

→ Display on VAS 5051:

•     1 -    Channel 0
  Erase learned values?

• ‒ Touch ▸ key.

Display on VAS 5051:

•     1 -    Channel 0
  Learned values erased
• ‒ Engine control unit identifier is stored in immobilizer and engine can be started.