MB Sprinter 903, Tachograph removal
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  1. #1
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    Question MB Sprinter 903, Tachograph removal

    Hey all!

    I am trying to remove the tachgraph from my 2004 Sprinter. (Kienzle A0014460333)
    If I just unplug it, the odometer goes to 0 km and the speedometer doesn't work.

    I was told that I should take off the meters, solder off the component 93c66 from behind the meters
    and put it to a eeprom reader.

    I should change the value 64 from row 2 to value 20.
    In addition I should insert back the kilometers, otherwise it goes to 0
    - this apparently needs a separate program to be done right...?

    Does this sound right to you? Can you help me with a bit more specific instructions?
    I know what eeprom is, I know how to find the component and do soldering,
    I've watched how to use hex editor to modify data, but I am not sure what to do
    exactly with the data and how to get the kilometers in it.
    I am newbie on the field. but eager to learn!!

    Thank you for your help in advance!

    - Riq

    IMG_1566.JPG

  2. #2
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    just change the value on the hex mentioned above and mileage will show up.......

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    Thanks for lending a hand! Is it really simple as that though? Do you think "changing value 64 from row 2 to value 20" is enough or is there something more I have to do to disconnect the tachograph properly?
    In some other thread people were saying that there are multiple values in the coding that should be changed..? People were sharing a whole dump to fix this...

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    hello
    put dump eeprom here

 

 

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