Diagnostic Software for VW-Audi Group Cars

 
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                    Immobilizer 2 ECU Swapping

Immobilizer 2 ECU Swapping
Updated  29 Mar. 2005

Ross-Tech is not responsible for any damage or problems that may result from following these instructions. They are to be used at your own risk. As always, you should refer to a Factory Repair Manual for your vehicle!

Immobilizer II:

The immobilizer will prevent the car from running without a matching key microchip. There is a symbol in the instrument cluster showing a key inside a car. If a new (or different ECU) is installed in the vehicle, the immobilizer will prevent the car from running and will cause the symbol to flash. Here is the procedure to introduce a new ECU to the instrument cluster. This must be performed each time ECU's are exchanged. This does not apply to installing a "chip" in the same ECU that is already aligned with the car.

Immo-3 knows your car's VIN. Access 17-Instruments (or separate 25-Immobilizer on vehicles that are set up that way) and look at the first "Extra" field.

If you see something like: "Immo-ID VWZ7Z0W0648696"  You've got Immo-2 (or maybe even Immo-1 in earlier non-US models).

If you see something like "WVZKB58001H231169 VWZ7Z0W0648696" You've got
Immo-3. The first 17-digit string is the VIN. The second 14-digit string in the Immo-ID.

  1. Install the new ECU in the car
    [Select]
    [17 - Instruments]
    [Adaptation - 10]

    Leave channel at "00"
    [Read]
    [Save]
     

  2. [Done, Go Back]
    [Close Controller, Go Back - 06]
    [Exit]

     

  3. Turn ignition OFF for 15 seconds. Start vehicle.

Note: For cars with a separate Immobilizer (Includes 2000+ EuroVan, Cabrio, and many older non-US models), use [25 Immobilizer] instead of [17 - Instruments]. The rest of the procedure is the same.


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                    Immobilizer 2 ECU Swapping