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Thread: E53 M62b44TU swap to E46, help(EWS-DME issu)

  1. #1
    Join Date
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    E46 330ci, E46 M3

    E53 M62b44TU swap to E46, help(EWS-DME issu)

    Hello guys,
    Recently have swaped an M62b44TU engine from a E53 X5 year 2001, to 320CI E46 year 2001. We have installed engine Wirings to the car also ews and keys of the engine. Now the car crank but does not start, we find out that there is no fuel pressure and sparks. We have checked fuses relays fuel pumps, every thing is OK. When diagnosing with autocom its tells: 148 EWS 3.3 DME-EWS. We have tried to synchronize the DME and EWS but it says: Syncro not Possible. we have tried reprog a second EWS and still not working. ad now we have being thinking about deleting the ews3.3. Guys we are really stuck, what are your suggestions ? and we would be very thankful for any of your help!

    - - - Updated - - -

    Forgot to say that the donor car has an auto tranny.

  2. #2
    Join Date
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    You need to virginize the ME7.2 dme first (clear out old ISN, only in boot mode), and only then it will sync.
    -Abel

    - E36 328is ~210-220whp: Lots of Mods.
    - 2000 Z3: Many Mods.
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  3. #3
    Join Date
    Apr 2018
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    E46 330ci, E46 M3
    Quote Originally Posted by 328 Power 04 View Post
    You need to virginize the ME7.2 dme first (clear out old ISN, only in boot mode), and only then it will sync.
    But i had the donor car running perfectelly? I have swaped Engine, engine wiring, DME, EWS, and key; all from the same car! and still got this issue.
    Do you think it's normal and do I still have to virginize it? and if so, how?
    Thanks

  4. #4
    Join Date
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    you may need to re-align them. They can get out of alignment if one powers on while the other is unplugged. This can be done with any of the usual BMW scanners. This process only works if both already have matching ISN's, it just simply resets the rolling code table.
    Current:

    - 09 335i MSport, FBO.
    - 98 Euro M3, Estoril Blue
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    Ex's: 1984 325e, 1988 325IX, 1992 525I, 1995 540i/6, 2002 330i, 2005 330xi, 1992 850i, 2003 330i #1, 2003 330i #2, 2002 330ci, 2004 330ci, 2007 328CI, 2007 335i, 2001 M3, 2006 M5 6 speed

  5. #5
    Join Date
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    Quote Originally Posted by legoman67 View Post
    you may need to re-align them. They can get out of alignment if one powers on while the other is unplugged. This can be done with any of the usual BMW scanners. This process only works if both already have matching ISN's, it just simply resets the rolling code table.
    OP did this end up working for you? I had the same idea as you when going about swapping an engine by using all the associated parts such as the DME key and EWS.

    Sent from my SM-G965U using Tapatalk

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