VAG CAN Emulator for VW/Audi connection pinout

Here is the connection diagram/pinout of VAG IMMO Emulator for VW Golf III, Passat B4, VW Sharan 98, Lupo 98, Polo 98, T4, VW LT35, Audi 100, A6, A4, A8, VW B5, Golf IV, New Beetle, Audi A2, A3, A4, A6 and TT


From year 1995 in Audi-VW (VAG) cars is used engine immobilizer. The VAG group immobilizer system consists of an immobilizer ECU which controls the recognition of keys and the Engine Management ECU system. Immobilizer is activated when the ignition key is removed and, together with the engine control unit, largely prevents unauthorized starting of the engine. The system uses a transmitter and receiver unit in the ignition key (transponder). Whenever an attempt is made to start the engine, it transmits a new code to the car’s electronics. The immobilizing is only cancelled and car motor electronic receives permission to start engine if the key sends a right authorization code.

Why VAG CAN Emulator should be used?/ Working Theory.

IMMO Box (Anti-Theft) must be replaced if car’s engine starts and stops immediately. Immo warning lamp/indicator will flash on the dash panel after engine is stop.


This warning lamp indicates that engine is blocked by immobilizer and engine start sequence must be repeat again if you have this problem time at time is better to replace your IMMO BOX by our Immobilizer Emulator to solve this problem. You can install emulator to car by yourself and there is no special tool or skills needed. Just follow the connection pinout below.


After emulator is installed to car switch ignition on/off with all valid keys you have keys will be programmed in automatically.

For cars with separated immobilizer box, short W and K lines and remove immobilizer box.

For cars with dashboard immobilizer, cut W line from dashboard


VW Golf III, Passat B4 Immobilizer Box Pinout


VW Sharan 98, Lupo 98, Polo 98, T4 Immobilizer Box Pinout


VW LT 35 Immobilizer Box Pinout


Audi 100, A6, A4, A8 Immobilizer Box Pinout


VW B5, Golf IV, New Beetle, Audi A2, A3, A4, A6, TT


GND — Dashboard Blue connector pin 24
K — Dashboard Blue connector pin 25
W — Dashboard Green connector pin 5
IGN +12V — Dashboard Blue connector pin 1