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Seat electronics needed to code out the driver's seat occupancy sensor/airbag light?

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    Seat electronics needed to code out the driver's seat occupancy sensor/airbag light?

    Hi all,

    I replaced my factory E46 M3 Convertible's stock driver's seat with an aftermarket bucket seat and harness. OE seatbelt removed as well. I unplugged the electronics under the original driver's seat, and all that's left down there now is a black wire with a yellow connector at the end of it. I left the rest of the electronics attached to the original seat - including the seat mat, the little black module (w/ blue writing on it), and everything else connected to those. That seat is in long-term storage right now.

    I've been scouring forums and youtube for days now trying to figure out how to properly code out my airbag light using NCS Expert. I am aware that a bypass module (resistors) can be plugged into the little black module as an alternative to coding - but I also have everything needed to code it out, which I know people have done before, and just feel like I'm doing it wrong. I'd like to take the coding route if possible. No matter what combination of parameters I disable, the car throws codes and the airbag light remains on.

    The verdict seems to be that these two lines are the only ones that need to be coded:

    ERKENNUNG_SITZBELEGUNG_1
    nicht_aktiv

    ERKENNUNG_SITZBELEGUNG_2
    nicht_aktiv

    ..which I've tried without luck. INPA throws code "OC3" now, and if I try other combinations, it throws codes for the seat back latch locking.

    I believe my issue might be related to the fact I'm missing that black module under the seat, where it is required to properly code it out. Does anyone know if the black module is required to be plugged in to code the airbag light/occupancy sensor out? The black piece is pictured below (ignore the red circle):
    Click image for larger version  Name:	img_0454-jpg.746474.jpg Views:	0 Size:	212.7 KB ID:	168159

    There's plenty of "here's what to code" topics on forums (i.e. https://forums.m3cutters.co.uk/threa....190871/page-2), but none seem to be working for me.. which is why I'm starting to believe I need to plug in that module.

    Thanks for any help in advance!

    #2
    I don't think there's a seat occupancy sensor for the drivers seat? Why would there, it's got to be occupied for being driven, no? The light maybe stems from the buckle receiver? Is there an option to code out that? GURTSCHLOSS_FAHRER_1 and GURTSCHLOSS_FAHRER_2 or alternatively GURTSTRAFFER_FAHRER_1 and GURTSTRAFFER_FAHRER_2 ?

    Check this document for reference: https://ncs-expert.com/wp-content/up...06/FSW_PSW.pdf

    Regards

    Comment


      #3
      Originally posted by Mr.wReckless View Post
      I don't think there's a seat occupancy sensor for the drivers seat? Why would there, it's got to be occupied for being driven, no? The light maybe stems from the buckle receiver? Is there an option to code out that? GURTSCHLOSS_FAHRER_1 and GURTSCHLOSS_FAHRER_2 or alternatively GURTSTRAFFER_FAHRER_1 and GURTSTRAFFER_FAHRER_2 ?

      Check this document for reference: https://ncs-expert.com/wp-content/up...06/FSW_PSW.pdf

      Regards
      Tried the coding above, no success.

      EDIT: I tried pulling fuse 10.. which caused the airbag light to go out and flashing seatbelt light to come on. Replaced fuse 10 and I was back at the airbag light issue.

      EDIT x2: I completely reset my FSW_PSW to factory default, then just changed GURTSCHLOSS_FAHRER_1, GURTSCHLOSS_FAHRER_2, GURTSTRAFFER_FAHRER_1, and GURTSTRAFFER_FAHRER_2 to nicht_aktiv. Now here is the code I got in INPA:

      Click image for larger version

Name:	INPA.jpg
Views:	1086
Size:	59.1 KB
ID:	168233

      And here is my current airbag coding:
      Code:
      GURTSTRAFFER_FAHRER_1
      nicht_aktiv
      GURTSTRAFFER_BEIFAHRER_1
      aktiv
      KOPFBAG_FOND_LINKS_1
      nicht_aktiv
      KOPFBAG_FOND_RECHTS_1
      nicht_aktiv
      KOPFBAG_FOND_LINKS_2
      nicht_aktiv
      KOPFBAG_FOND_RECHTS_2
      nicht_aktiv
      GURTSCHLOSS_SPANNUNGSS_1
      nicht_aktiv
      GURTSCHLOSS_SPANNUNGSS_2
      nicht_aktiv
      SBE2_1
      nicht_aktiv
      SBE2_2
      nicht_aktiv
      HWL_1
      nicht_aktiv
      HWL_2
      nicht_aktiv
      ERKENNUNG_SITZBELEGUNG_1
      aktiv
      ERKENNUNG_SITZBELEGUNG_2
      aktiv
      GURTSTRAFFER_FAHRER_2
      nicht_aktiv
      GURTSTRAFFER_BEIFAHRER_2
      aktiv
      BAUREIHE
      e46
      BPLUS_TRENNUNG2_1
      nicht_aktiv
      BPLUS_TRENNUNG2_2
      nicht_aktiv
      GURTSTRAFFER_HINTEN_LI_1
      nicht_aktiv
      GURTSTRAFFER_HINTEN_RE_1
      nicht_aktiv
      GURTSTRAFFER_HINTEN_MI_1
      nicht_aktiv
      GURTSTRAFFER_HINTEN_LI_2
      nicht_aktiv
      GURTSTRAFFER_HINTEN_RE_2
      nicht_aktiv
      GURTSTRAFFER_HINTEN_MI_2
      nicht_aktiv
      GURTSCHLOSS_HINTEN_LI_1
      nicht_aktiv
      GURTSCHLOSS_HINTEN_RE_1
      nicht_aktiv
      GURTSCHLOSS_HI_MITTE_1
      nicht_aktiv
      GURTSCHLOSS_HINTEN_LI_2
      nicht_aktiv
      GURTSCHLOSS_HINTEN_RE_2
      nicht_aktiv
      GURTSCHLOSS_HI_MITTE_2
      nicht_aktiv
      SBE1_STATUS_VERZ_1
      nicht_aktiv
      ITS_FRONTCRASH_1
      nicht_aktiv
      SBE1_STATUS_VERZ_2
      nicht_aktiv
      ITS_FRONTCRASH_2
      nicht_aktiv
      CRASHPARAMETER_MRS4_0
      e46
      CRASHPARAMETER_MRS4_01
      e46
      CRASHPARAMETER_MRS4_02
      e46
      CRASHPARAMETER_MRS4_03
      e46
      CRASHPARAMETER_MRS4_04
      e46
      CRASHPARAMETER_MRS4_05
      e46
      CRASHPARAMETER_MRS4_06
      e46
      CRASHPARAMETER_MRS4_07
      e46
      CRASHPARAMETER_MRS4_08
      e46
      CRASHPARAMETER_MRS4_09
      e46
      CRASHPARAMETER_MRS4_0A
      e46
      CRASHPARAMETER_MRS4_0B
      e46
      CRASHPARAMETER_MRS4_0C
      e46
      CRASHPARAMETER_MRS4_0D
      e46
      CRASHPARAMETER_MRS4_0E
      e46
      CRASHPARAMETER_MRS4_0F
      e46
      CRASHPARAMETER_MRS4_10
      e46
      CRASHPARAMETER_MRS4_11
      e46
      CRASHPARAMETER_MRS4_12
      e46
      CRASHPARAMETER_MRS4_13
      e46
      CRASHPARAMETER_MRS4_14
      e46
      MRSAPARAMETER_01
      e46
      MRSAPARAMETER_02
      e46
      MRSAPARAMETER_03
      e46
      MRSAPARAMETER_04
      e46
      MRSAPARAMETER_05
      e46
      AIRBAG_FAHRER_1
      aktiv
      AIRBAG_FAHRER_2
      aktiv
      FAHRERBAG_STUFE2_1
      aktiv
      FAHRERBAG_STUFE2_2
      aktiv
      AIRBAG_BEIFAHRER_1
      aktiv
      AIRBAG_BEIFAHRER_2
      aktiv
      BEIFAHRERBAG_STUFE2_1
      aktiv
      BEIFAHRERBAG_STUFE2_2
      aktiv
      SIDEBAG_LINKS_1
      aktiv
      SIDEBAG_RECHTS_1
      aktiv
      SIDEBAG_LINKS_2
      aktiv
      SIDEBAG_RECHTS_2
      aktiv
      GURTSCHLOSS_STROMSS_1
      aktiv
      GURTSCHLOSS_STROMSS_2
      aktiv
      ITS_LINKS_1
      nicht_aktiv
      ITS_RECHTS_1
      nicht_aktiv
      ITS_LINKS_2
      nicht_aktiv
      ITS_RECHTS_2
      nicht_aktiv
      SIDEBAG_FOND_LINKS_1
      nicht_aktiv
      SIDEBAG_FOND_RECHTS_1
      nicht_aktiv
      SIDEBAG_FOND_LINKS_2
      nicht_aktiv
      SIDEBAG_FOND_RECHTS_2
      nicht_aktiv
      VERRIEGELN_SITZLEHNE_FA_1
      aktiv
      VERRIEGELN_SITZLEHNE_FA_2
      aktiv
      VERRIEGELN_SITZLEHNE_BF_1
      aktiv
      VERRIEGELN_SITZLEHNE_BF_2
      aktiv
      B_SATELLIT_1
      aktiv
      B_SATELLIT_2
      aktiv
      CODIERANFORDERUNG_0
      ohne_satellit
      CODIERANFORDERUNG_1
      ohne_satellit
      GURTSCHLOSS_FAHRER_1
      nicht_aktiv
      GURTSCHLOSS_FAHRER_2
      nicht_aktiv
      BPLUS_TRENNUNG1_1
      aktiv
      BPLUS_TRENNUNG1_2
      aktiv
      AUSLOESEKRITERIUM_1
      us
      AUSLOESEKRITERIUM_2
      us
      GURTSCHLOSS_BEIFAHRER_1
      aktiv
      GURTSCHLOSS_BEIFAHRER_2
      aktiv
      LENKSEITE_1
      linkslenker
      LENKSEITE_2
      linkslenker
      Attached Files
      Last edited by alexjames23; 05-17-2022, 01:44 PM.

      Comment


        #4
        I went in and set VERRIEGELN_SITZLEHNE_FA_1 and VERRIEGELN_SITZLEHNE_FA_2 (Lock seat backrests) to nicht-aktiv. Now the airbag light will flash for 30 seconds, then remain out for 30 seconds, flash for 30 seconds, remain out for 30 seconds - and keeps repeating. However, there are no codes in INPA anymore. Very confusing, especially now that the car is not telling me anything.

        --

        Update: What appears to be a SUCCESS!! I let the light do its flashing thing for a few minutes, then it went out completely. I've turned off power for a few mins, and turned back on for a few minutes - repeated that process 4 times now - no light at all other than its brief self test on ignition. If it comes back, I'll post again - but otherwise I think I'm all set! Thanks for your help Mr.wReckless!
        Last edited by alexjames23; 05-17-2022, 09:11 PM.

        Comment

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