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Thread: Coding a new (used) DME to an E46

  1. #26
    Join Date
    May 2009
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    South Jordan, Utah
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    01 740iS 6spd, e46 M3
    Hey guys,

    2002 325xiT 5speed
    I was driving down the interstate and the car just died... Vehicle has 153,000 miles.


    Tried starting it but it just cranks but won't start so I towed it home.
    I diagnosed it with inpa/Bmw scanner p.a soft 1.4. I get the "crankshaft position sensor no signal" error.. I went ahead and purchased all three oem sensors the crankshaft sensor and both camshafts sensors (intake and exhaust)

    Tried starting it again.. same problem.. cranks but won't start.
    *checked fuel pressure at the rail and it's fine.

    I proceeded by removing the coilpacks and the spark plugs and doing a visual test checking to see if I have spark, cylinders 3 and 4 are the only ones getting spark upon cranking. Swapped around the coilpacks and still only getting spark at 3 and 4.
    Diagnosed again and still getting "crankshaft postion sensor no signal" message.

    recent maintenance:
    *changed fuel pump
    *changed fuel filter
    *changed spark plugs
    *replaced with coil packs from my e38

    My mechanic suspects the DME...

    I'm looking to buy a used DME off a 2002 325i and swap the AM29F00BB chip, will I need to flash the DME to make it compatible with a XI?

    2001 740i 6 speed M-Sport
    2001 e46 M3 6spd
    2002 325xiT 5 speed --- SOLD
    1998 740iL 127k --- SOLD

  2. #27
    Join Date
    Sep 2003
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    BMW 850 and E55 AMG
    Get one with the same part number, and all you'll need to do is swap that chip.
    Are you still getting the crankshaft sensor error?

    A bad sensor is more likely than a bad ECU.

    Giftschrank Projekt

  3. #28
    Join Date
    May 2009
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    South Jordan, Utah
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    My Cars
    01 740iS 6spd, e46 M3
    Yeah I replaced the crankshaft sensor but still get the same error.

    2001 740i 6 speed M-Sport
    2001 e46 M3 6spd
    2002 325xiT 5 speed --- SOLD
    1998 740iL 127k --- SOLD

  4. #29
    Join Date
    Jun 2010
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    Germany
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    Alpina B12 5.7 B3 3.0 R
    I can confirm this procedure as well. The only way is you need good soldering experience in SMD. For the first time I made a copy of the chip, it is a TSOP 44 Flash you will need the right socket for the programmer, I used a galep4. It is a good choice to verify the checksum of the chip after it is programmed. Later you have to allign the EWS-DME process again, but it is fully working. My backround, the DME is sometimes destroyed by bad solenoids (especially fuel gas updates) who kill the Flash because of the missing diode inside the relays. No Adaption or erase of the Adaption after a Startup can occour.

  5. #30
    Join Date
    May 2009
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    South Jordan, Utah
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    01 740iS 6spd, e46 M3
    So I purchased a used DME resoldered the chips, realigned the ews with the dme but the problem still persists. I still get the crankshaft postion senor no signal.. could it be the wiring (pretty hard to believe it would go out while driving)
    what gives?
    Last edited by zheina740; 07-04-2013 at 10:44 AM.

    2001 740i 6 speed M-Sport
    2001 e46 M3 6spd
    2002 325xiT 5 speed --- SOLD
    1998 740iL 127k --- SOLD

  6. #31
    Join Date
    Sep 2003
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    Birmingham, UK
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    BMW 850 and E55 AMG
    It's looking like you've bought a bad sensor, they will turn up brand new and non functioning but you can always check the wires to make sure they are OK.

    Giftschrank Projekt

  7. #32
    Join Date
    May 2009
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    South Jordan, Utah
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    01 740iS 6spd, e46 M3
    Another question.. After attempting to start the car I remove the crankshaft position sensor and find it covered in oil, is this normal?

    2001 740i 6 speed M-Sport
    2001 e46 M3 6spd
    2002 325xiT 5 speed --- SOLD
    1998 740iL 127k --- SOLD

  8. #33
    Join Date
    Sep 2003
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    BMW 850 and E55 AMG
    Yep, it sits inside the crank case and it will get splashed by the engine oil.

    Giftschrank Projekt

  9. #34
    Join Date
    Mar 2012
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    London
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    2000 728i; 2004 x3 3.0i;
    Thank you (especially enda320 and S ECU repair) for the valuable information on this thread. I can confirm successful chip swap as per info provided.

    Nervous experience but use a decent electronic shop. I can recommend an excellent tech in the Heathrow area that did this repair for me.
    Last edited by osc911; 09-21-2021 at 01:37 AM.

  10. #35
    Join Date
    Jun 2013
    Location
    Slovakia
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    My Cars
    E46 323Ci '99
    Hi,

    I have engine swap done 323i@328i. I tried to perform DME update via WinFKP but after few % crashed it. DME seems to be bricked
    I have spare DME from 328i engine donor, but I don't have EWS/Key.

    Original 323i DME: MS42 5WK9037 (7 500 255)
    Spare 328i DME: MS42 5WK90329 (1 430 844)

    So am I able to swap mentioned 29f400 chip from 323i DME to 328i DME?
    And important question is, if this 29f400 chip is also bricked .. or if this chip is untouched during flash and have all needed information even when flash has not been successful.

    I think, if my 323i is completely bricked .. I will need another donor for DME+EWS+KEY. Am I right?

    Thanks in advance.

  11. #36
    Join Date
    Jul 2013
    Location
    Turkmenistan
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    354
    My Cars
    e39
    Isn't it possible to change VIN in used DME with Tool32?

  12. #37
    Join Date
    Jan 2012
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    strumica
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    My Cars
    320 ci
    hello my friends. i'm reading your posts and finally are you have success with used DME ms43 and EWS3 aligment? if i unsolder the am29f400bb from my dme and do a copy with williem programer to other blank am29f400bb eprom, and solder the copy to the used DME, the used dme will work with my car? that is my question thanks best regards .

  13. #38
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    BMW 850 and E55 AMG
    If they are both the same 5WK9 number, yes.

    Infact, you won't need a blank eeprom, you can just take a copy with willem incase you have problems, then soldering that chip into the replacement ECU as it is.

    Giftschrank Projekt

  14. #39
    Join Date
    Jan 2012
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    strumica
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    320 ci

    re

    Quote Originally Posted by enda320 View Post
    If they are both the same 5WK9 number, yes.

    Infact, you won't need a blank eeprom, you can just take a copy with willem incase you have problems, then soldering that chip into the replacement ECU as it is.
    yes the they are same 5WK90012. i only like to do some experiment first with winkpf to update the software then to remap if i find something on net, but with the second dme.for that reason i like to clone my am29f400. this eprom is cheap and we will see thanks best regards !

  15. #40
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    BMW 850 and E55 AMG
    You will still need to sync the EWS when you change between them, but it will be possible.

    Giftschrank Projekt

  16. #41
    Join Date
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    strumica
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    320 ci
    Quote Originally Posted by enda320 View Post
    You will still need to sync the EWS when you change between them, but it will be possible.
    if the ISN codes are in am29f400, all after that will be easy. i have DIS, INPA, SSS progman and ISTA P/D and others... will be easy to align the ews and the dme... once i did this with inpa on my friend and the car now is ok ...

  17. #42
    Join Date
    Jul 2007
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    Philadelphia, PA
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    2005 M3 & 2004 330i
    You need to wipe the ISN first with an external programmer. It is near 0x4000 IIRC

  18. #43
    Join Date
    Jan 2012
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    strumica
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    320 ci
    hello my friend. i'm experimenting with DME. i unsoldered am29f400 from speared dme but after that the dme wont work. i think i burn the eprom . are you have read file from am29f400 with programmer from 7511570 5WK90012. i have programmer and i like to continue with my experiment, but i need this file to clone this chip and to work. thanks best regards.

  19. #44
    Join Date
    Dec 2010
    Location
    Las Vegas, NV
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    3
    My Cars
    199 BMW 323i
    I recently purchased a used ECU off e-bay, and removed the old EPROM from my old ECU and installed it in the new ECU. The car started up fine, but the same problem exists on the new computer. The computer is just not processing and showing the O2 sensors pre-cat. We have verified the O2 sensors are working fine with a volt meter at the ECU connector. Any ideas what could be causing the issue? I don't want to spend $450 just to find out the ECU was fine. Any assistance you can provide would be appreciated.

  20. #45
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    BMW 850 and E55 AMG
    What are the fault codes coming up?

    Giftschrank Projekt

  21. #46
    Join Date
    Nov 2014
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    México
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    2001 BMW 330i
    Hello everyone, a few days ago I did the chip swap within MS43 ECU modules with different part numbers, and the car didn't start up, so now I did the chip swap within modules with same part number but the car is not starting yet, it needs to be realigned? how exactly is that realignment process? I'm a newbie and I will appreciate if you could explain a little more about software and tools to get the car running again. It's a 2001 330i. Thanks in advance!

  22. #47
    Join Date
    Sep 2013
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    los angeles
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    1998 BMW 328IS
    Quote Originally Posted by enda320 View Post
    It's the 29F400, the other one would be known as the eeprom and that's where stuff like adaptation and fault codes are stored.
    Just swapping the 29f is enough to reuse a different ECU with the same part number.
    Apologies for reviving an old thread, but just a few questions. Would the chip swap apply to ms45.1?
    I fried my DME and it needs replacing, I'd prefer to buy a matching used DME and swap the chip as this is may be the least expensive route. I know it can't be that easy so what else may be involved?

    If the chip swap can't work on the ms45.1 (2004 330i 6spd) then I may have to get it refurbished, I don't feel like swapping out keys, locks, tumblers and such.

  23. #48
    Join Date
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    Quote Originally Posted by doomviillain View Post
    Apologies for reviving an old thread, but just a few questions. Would the chip swap apply to ms45.1?
    I fried my DME and it needs replacing, I'd prefer to buy a matching used DME and swap the chip as this is may be the least expensive route. I know it can't be that easy so what else may be involved?

    If the chip swap can't work on the ms45.1 (2004 330i 6spd) then I may have to get it refurbished, I don't feel like swapping out keys, locks, tumblers and such.
    MS45 has to be done through BDM

  24. #49
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    X535D 323iS Z4 i3
    Quote Originally Posted by doomviillain View Post
    Apologies for reviving an old thread, but just a few questions. Would the chip swap apply to ms45.1?
    I fried my DME and it needs replacing, I'd prefer to buy a matching used DME and swap the chip as this is may be the least expensive route. I know it can't be that easy so what else may be involved?

    If the chip swap can't work on the ms45.1 (2004 330i 6spd) then I may have to get it refurbished, I don't feel like swapping out keys, locks, tumblers and such.
    I see you are in LA like me, I can do the swap for you. I prefer to change the ISN in the EWS than to swap chips from the DME. Sometimes the data may be corrupt and the problem may move to the replacement DME.

  25. #50
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    1998 BMW 328IS
    Quote Originally Posted by bawareca View Post
    I see you are in LA like me, I can do the swap for you. I prefer to change the ISN in the EWS than to swap chips from the DME. Sometimes the data may be corrupt and the problem may move to the replacement DME.
    I think that's what ended up happening, swapped the chip to a donor DME and it didn't work. I ended up shipping the DME to get refurbished with the EWS and key to be synced.

    I wish I had read your post earlier, you could of saved me time and money...

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