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Thread: Active steering and DSC failure:/

  1. #1
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    Active steering and DSC failure:/

    Hello. I posted earlyer on this forum but in the wrong place.
    Please check link and come with advice if you have some.
    The car is : e60 530d 2004 model.
    Optionlist are big but the relevant equipment is : dynamic drive, active steering and dynamic lights.

    To update, i have replaced following:

    SZL (3times used ones coded and programmed with winkfp and ncs expert)
    Active steering module (coded with winkfp and programmed with NCS expert)
    Motorposition sensor (New oem part)
    Battery (new original BMW 110ah) registered with DIS / gt1
    Idrive CCC unit because the old one was faulty.

    I still cannot run throug the acive steering calibration, and it failes when im told to turn the wheel +- 10 degrees from center.
    I have tryed calibrating with : DIS / GT1, ISTA rheingold, and INPA. (failes the same place in every program.
    The fault codes and some pictures are in this link :
    https://www.bimmerforums.com/forum/s...nd-DSC-Failure

    All tips and experience sharing is much apreciated.
    Sorry for bad english writing.

  2. #2
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    The steering wheel is about 15 degrees to the left. I have active steering warning lamp and DSC warning light.
    Sometimes when i take it for a drive, the ABS is acting up and it pulses on the pedal when i brake evry time. The brakes are also very bad when this happends. Park the car. stop and start it again. all is back to normal. I have ordere a DSC module because of this, and a theory that it might be the module that keeps disturbing de CAN line. But this is just a theory. (all brake lines,disc and pads are new because of MOT )
    Have checked wires from the rack and found on suspicious wire with a break on the isolation but after i fixed this, there was no difference. (was to the lock solinoid on the rack.

  3. #3
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    I would try the following:

    Set steering perfectly straight on a flat road.
    Open Tool32, File> Load SGBD > choose SZL_60.prg

    Run job "luz_null_setzen" once to try to set steering back to zero.

    - - - Updated - - -

    Also run job: "ABGLEICH_LENKWINKELSENSOR_RUECKSETZEN" followed by "ABGLEICH_LENKWINKELSENSOR" jobs
    -Abel

    - E36 328is ~210-220whp: Lots of Mods.
    - 2000 Z3: Many Mods.
    - 2003 VW Jetta TDI Manual 47-50mpg
    - 1999 S52 Estoril M Coupe
    - 2014 328d Wagon, self-tuned, 270hp/430ft-lbs
    - 2019 M2 Competition, self-tuned, 504whp
    - 2016 Mini Cooper S

  4. #4
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    Thanks for reply

    I can try this tomorrow. But corect me if iam wrong, isnt this just calibrating the steering angle sensor ?

    - - - Updated - - -

    When reading live data in inpa the steering angle sensor reads 0 when steering wheel is centered. And i have no problem calibrating just the steering angel sensor in INPA.

  5. #5
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    Ah ok. I am concerned about the plausibility error. Plausibility means that the sensor is working, but the values that are coming out do not match to another reading.
    The above procedure clears everything to zero in SZL.

    I have not worked on this ARS system much, but there are many functions and offsets possible with Tool32 in ars_60.prg

    I am starting to think that there is a value in the ARS that isn't matching the angle sensor in steering wheel, so plausibility error comes up. Then because of that, it doesn't let you calibrate. Just my guess.

    You may be able to set a zero point or delete any other calibration points with tool32.

    Has the replaced steering rack been centered on the tie rods?

    - - - Updated - - -

    ARS_60.prg "START_LOESCHEN_LEWI" is an interesting job. It does: "Reset the learned steering angle offset"
    -Abel

    - E36 328is ~210-220whp: Lots of Mods.
    - 2000 Z3: Many Mods.
    - 2003 VW Jetta TDI Manual 47-50mpg
    - 1999 S52 Estoril M Coupe
    - 2014 328d Wagon, self-tuned, 270hp/430ft-lbs
    - 2019 M2 Competition, self-tuned, 504whp
    - 2016 Mini Cooper S

  6. #6
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    Abel, I'm glad you're here. Bimmers86, please know that 328 Power 04 is more familiar than anyone, with the computer programs you're using.

    However, he points out what I'd be guessing is the major issue you're having: MECHANICAL alignment. If the rack and tie rods are not correctly aligned, you can't possibly make the computers happy. I'd guess that some mechanical part is incorrectly aligned / installed, so the computers cannot be made happy with the numbers that are being shown by the sensors.

    Have any purely mechanical parts been replaced (like tie rods, rack, etc?) Have you hit a big pothole? Have you had a 4 wheel alignment?

    Chris Powell
    Racer and Instructor since, well. decades, ok?
    Master Auto Tech, owner of German Motors of Aberdeen
    BMWCCA 274412
    German Motors is hiring ! https://www.bimmerforums.com/forum/s...1#post30831471

  7. #7
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    the problem happend when i bougt the car. when driving home. a long trip. after 6hours driving the error came. then i stopped and checked oil. there was low oil level so i bought chf and refilled but no luck.

    - - - Updated - - -

    the rack has not been replaced. and i have taken no alignment. im thinking electrical problem since i get trown out of the afs startup calibration program.

  8. #8
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    i get error when trying "luz null setzen".
    code is :error_ecu_conditions_not_correct_or_request_seque nce_error.
    the other commands are okay.

  9. #9
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    This may not be the cause of your issues, but I saw on your DIS screen, at one of the threads you linked to, that your power supply to the AFS was 11.68 volts. That would certainly qualify as "ECU conditions not correct". All work of this nature needs to be done with a battery maintainer holding between 13 volts and 15 volts.

    Also, I see that you have an ABS pulsation issue. Is this not setting a code? Have you tried watching all 4 wheel speeds, to see if they correspond?

    I noticed on one screen your error happened when you had .46 G's of cornering, and significant yaw angle. It's worth noting that the active sway bar switches from leaning into the corner to leaning out of the corner at approximately .45 G's. Since you are also losing fluid, have you checked the braided stainless hoses that go to the sway bar motor, to see if one is torn?

    You've got so many links to so many threads, it's hard to keep up, but I think I saw a bunch of communications failures ? Is there any way you can post those screen shots all together on this thread?

    Chris Powell
    Racer and Instructor since, well. decades, ok?
    Master Auto Tech, owner of German Motors of Aberdeen
    BMWCCA 274412
    German Motors is hiring ! https://www.bimmerforums.com/forum/s...1#post30831471

  10. #10
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    hello. there is no fault code from the dsc except steering angle and signal between afs and dsc. (5f62 if i remember correctly). i have tested wheel speed with inpa and all are showing the same the last scann i did in ISTA shows error code on IBS communication. could this be the problem ? new one is ordered but i feel like im just replacing parts now to and see no result from it :/

  11. #11
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    will do a read out of the fault codes again tomorrow and post new pictures since there is alot of links to other forums.

  12. #12
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  13. #13
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  14. #14
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  15. #15
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    20180226_172232.jpg20180226_172255.jpg20180226_173010.jpg20180226_173019.jpg20180226_173045.jpg

    - - - Updated - - -

    So i updated with new fault code readouts. So i think its best to use this info. There are a couple of new ones on the SZL that i havent seen before.

    - - - Updated - - -

    This is with the steering wheel centered.

  16. #16
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    U_ISIS and U_SZL signal missing is usually a fault with the steering angle sensor.


    They do go bad often on E60, just so you know.. but 3 times bad? Hmm.

    You installed them centered, and no tearing of the ribbons?
    -Abel

    - E36 328is ~210-220whp: Lots of Mods.
    - 2000 Z3: Many Mods.
    - 2003 VW Jetta TDI Manual 47-50mpg
    - 1999 S52 Estoril M Coupe
    - 2014 328d Wagon, self-tuned, 270hp/430ft-lbs
    - 2019 M2 Competition, self-tuned, 504whp
    - 2016 Mini Cooper S

  17. #17
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    the slipring i kept moving on to the different szl modules.
    bought 3 used ones. after trying and not fixing the second time i sold it used and it worked perfect in that car after i set it up the same way.
    i have inspected the brush sensor that this have and it looks clean and with no breakage.

  18. #18
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    So today i replaced the DSC unit (only the module boltet with 4 screws) and there was no change.
    im at a loss now.
    Could anyone explain how the can signal travels from the szl to the dsc and the AFS? I mean is it the blue and white wire (which I think is the F-can) connected in serial, or is it trough another box that redirects the signal?.
    i dont want to throw another 450$ on another szl whitout checking other things that could be faulty.

  19. #19
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    Im thinking, could i have done something wrong along the way when coding and replacing part? I have done as following:
    With daten v.55 i believe.
    1. Winkfp: flashed the modules with my vin and coresponding software.
    2. Ncs expert : expert mode- sg codieren (dsc,ars,afs,szl)
    3. INPA (dis,ista....) : deleted fault codes and synchronized steering angel.
    ALL the above without any errors or faults whatsoever.
    4. So i load up my DIS v.44 (also tryed DIS v.57 and on my 2 other diagnostic laptops) and function select. Active steering - startup alignment. (it completes motorposition reset =ok, steering angel calibration = ok, when it tells me to wiggle the steering wheel +- 10 degrees from center i press next and it stops working)

    AND right before this, it tells me to adjust the absoulute steering angel to 0 degrees. Here nothing happends when turning the wheel. it sits at 0 no matter how much i turn. could this be a pointer at the problem ????






    Quote Originally Posted by 328 Power 04 View Post
    Ah ok. I am concerned about the plausibility error. Plausibility means that the sensor is working, but the values that are coming out do not match to another reading.
    The above procedure clears everything to zero in SZL.

    I have not worked on this ARS system much, but there are many functions and offsets possible with Tool32 in ars_60.prg

    I am starting to think that there is a value in the ARS that isn't matching the angle sensor in steering wheel, so plausibility error comes up. Then because of that, it doesn't let you calibrate. Just my guess.

    You may be able to set a zero point or delete any other calibration points with tool32.

    Has the replaced steering rack been centered on the tie rods?

    - - - Updated - - -

    ARS_60.prg "START_LOESCHEN_LEWI" is an interesting job. It does: "Reset the learned steering angle offset"

  20. #20
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    Who is reporting 0, steering angle sensor or ARS?

    Maybe it's a wiring problem?

    You did everything fine in software.
    -Abel

    - E36 328is ~210-220whp: Lots of Mods.
    - 2000 Z3: Many Mods.
    - 2003 VW Jetta TDI Manual 47-50mpg
    - 1999 S52 Estoril M Coupe
    - 2014 328d Wagon, self-tuned, 270hp/430ft-lbs
    - 2019 M2 Competition, self-tuned, 504whp
    - 2016 Mini Cooper S

  21. #21
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    in the calibration routine it stays at 0. better if i run throug it and take photos for you maybe.
    im thinking wires to. but have only checked on the rack and right beside the modules i have replaced. all looks good...

  22. #22
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    20180228_170419.jpg20180228_170440.jpg20180228_170443.jpg20180228_170450.jpg




    Quote Originally Posted by 328 Power 04 View Post
    Who is reporting 0, steering angle sensor or ARS?

    Maybe it's a wiring problem?

    You did everything fine in software.
    Attached Images Attached Images

  23. #23
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  24. #24
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  25. #25
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    20180228_170949.jpg
    When turning the steering wheel left to right several times this changed to signal disturbed or something (it flashed very fast and i didnt quite cache what it said but it was something like it lost contact. At the same time i got an airbag lamp in my cluster. This has not happend before.

    - - - Updated - - -

    20180228_171223.jpg20180228_171227.jpg20180228_171231(0).jpg

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