Immobilizer: Audi 100 2.5 TDI - Starting Year

Actually, it's only the AAT that had a WFS; the 1T probably never had one.

Thank you.
Jens.

Jens 16syncro wrote:

Actually, it's only the AAT that's being referred to; the 1T probably never had a WFS. Thank you. Jens

Hi,

DirkC4 has written something in the following thread that you might find interesting:
Okay, I understand. Please provide the German text you want me to translate into English. I will only provide the translation.

DirkC4 wrote:

According to my wiring diagram, this should work for all AEL/AAT models from 1991 onwards. dcjf wrote: On the other hand, I've read in this forum that the function is simply not included in some control units. Unfortunately, the circuit diagrams do not entirely correspond to reality in this respect . The functionality for GRA is only included in the third generation of AAT ECUs, or from the beginning in AEL (as well as WFS with transponder). (so, starting from "A6" to C4, essentially)

The 100 TDI, registered in May 1994, in my family is one of the last 100 models and still has the VP34 injection pump, and it hasn't been retrofitted with a WFS (only a later aftermarket one), which aligns with the information provided above.

Best regards,
Munch.