Instrument cluster, procedure to change code

NOTE: To assure that a later identification of the immobilizer protection is assured, the change of the control module must be carried out as follows and the following steps must be taken.

Locking code with 2-part label
NOTE: The label on the key tag of the new lock set is used to identify the mechanical lock combination.
- Remove right label -2- (with bar code) remove from key tag of the new key set and destroy.
- Take the remaining left label -1- (without bar code) from the new key tag and replace the previous left label on the customer's key tag
Fig 1: Identifying Locking Code With 2-Part Label
Courtesy of AUDI OF AMERICA, INC.
Control module for the immobilizer unit is integrated into the instrument cluster
In order to replace the lock set and instrument cluster, a coded "secret number" must first be determined in conjunction with the 14 digit identification number of the anti-theft immobilizer.

Immobilizer identification number is read upon initiation of On Board Diagnostic (OBD). See CHECK CONTROL MODULE VERSIONS (FUNCTION 01) .

Effective calendar date 03.11.2002, the immobilizer secret number is encoded for increased security. The encoded number is now 7-digits and is referred to as a "PIN" ("Personal Identification Number").

All models with anti-theft immobilizer are affected, regardless of generation.

The process to obtain the 7-digit PIN remains the same as with the 4-digit "secret number" previously used - that is: request via the "Warranty Information Network" (WIN). However, WIN Administration now requires additional information from both the vehicle and Dealer in order to generate the 7-digit PIN.

The PIN is only valid on the day it is requested. Thereafter, a new PIN is required.

The 7-digit PIN can only be processed and input using either the VAS 5051 or VAS 5052 with basis CD version 3.10 and higher. VAG 1551/1552 Scan Tools are unable to process or input this number.

A correct Importer/Dealer number must reside in the VAS 5051/5052 in order to request a PIN.

The requested PIN is intended for internal use only, is worthless to other Dealers and must not be shared with the customer.

CAUTION:

All Dealership VAS 5051 and VAS 5052 testers in service MUST be programmed with the correct Importer/Dealer number, as well as correct date and time.
Adaptation functions of the anti-theft immobilizer are not possible with incorrect data!