No encoding is needed, just replace the defective display.

Equals to this part numbers:
8L0920931F, 8L0919880D

Description:

LCD Display for Audi AUDI Allroad A4 A6  Instrument Cluster (manufactured by JAEGER only) Pixel Repair Display is made of high quality glass and have the film protectors on it. Make sure to peel them off from both sides after soldering is done. Normal soldering machine with very patient skills would be necessary ,the repair is not an easy DIY . This LCD is designed to fit instrument clusters manufactured by JAEGER only.

Suitable for this cars:

Audi A4/S4/RS4 B5 Series from 1995-2001
Audi A6/S6/RS6 C5 4B Series from 1997-2004
Audi Allroad C5 Series from 1999-2005

Please compare your display with the pictures