Siemens Simos 2.1 ECU swap on Golf MK IV
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  1. #1
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    Default Siemens Simos 2.1 ECU swap on Golf MK IV

    Good day

    The Siemens Simos 2.1 5WP4459 04 ECU on my Golf MK IV failed. I got a Siemens Simos 2.1 5WP4459 03 from a secondhand parts dealer. The VW number on both these units are exactly the same.

    Can someone please assist with the following:
    1) Will the secondhand unit work on my car?
    2) My car is manual and this unit comes from an automatic vehicle.
    3) We made a copy of the file in the 93C56 EPROM in the old ECU, can I copy this to the 93C56 in the secondhand ECU or will it be better to IMMO OFF the secondhand ECU?
    4) Can the SKC be read from the file copied off the failed ECU?

    Thank you

  2. #2
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    jolidj's Avatar
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    Default

    fast way is to do immo off on second ecu. ore you can change 93c from original to second ecu.if need change flash to.
    i dont remember but golf 4 have other ecu for gear box . so you dont have problem.
    ALL TUNING.
    THE BEST OR NOTHING. THANKS + REPUTATION .

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    Hello Jolidj

    Thank you for reply. I will program 93C56 on secondhand ECU with file of original ECU. I will also copy file from 29F200 on the original ECU and write that to that of secondhand ECU. I take then I should have no problems using the vehicles original keys.

    Go well.

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    Hi friend

    U need only swap immo data from 93c56 to 2 hand ECU, or if u have pincode adapt 2 hand ECU, with VCDS or any other can do this job but is more easy swap data for me

    Cheers
    Press "THANKS" button. just one click, CHEERS

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    Hello electrones

    Thank you very much for your reply. Does 93C56 only carry immo data on this ECU and the 29F200 carry the engine map?

    Enjoy your day.

    Freddie

 

 

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