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Thread: Retrofitting AWD to Scirocco mk3

  1. #1
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    Retrofitting AWD to Scirocco mk3

    I've recently done a retrofit of AWD from 2010 Golf R to my 2011 Scirocco R. To keep it simple, mechanically it required changing the boot floor, gearbox (DSG) and rear axle (together with Haldex coupling) from Golf to Scirocco. Some work with fuel tank and exhaust pipe also. Wiring was simple, Haldex control unit only requires power, signal from brake pedal and powertrain CAN bus.

    With VCDS I've activated AWD on engine ECU and CAN gateway. All the fault codes are gone except one on ABS which leads to ESP not working. Not sure if I need to recode something on ABS control unit.

    Any idea if there is some other control unit on powertrain data bus where I need to enable AWD or is just about the coding on ABS control unit?

    Code:
    Tuesday,04,March,2014,20:08:34:03166
    VCDS -- Windows Based VAG/VAS Emulator
    VCDS Version: Release 12.12.0 (x64)
    Data version: 20130910
    
    
    
    
    
    --------------------------------------------------------------------------------
    --------------------------------------------------------------------------------
    
    
                    Address 03: ABS Brakes       Labels: 1K0-907-379-60EC1F.clb
    Control Module Part Number: 1K0 907 379 BE    HW: 1K0 907 379 BE
      Component and/or Version: ESP MK60EC1   H31 0108
               Software Coding: 743B80F5492400FC2E0E01E8922200413D0800
                Work Shop Code: WSC 00020 790 00000
                          VCID: 76E98FD6C1CB63AEBEF-8023
    1 Fault Found:
    
    18055 - Check Coding of ECUs on Powertrain Data Bus 
                P1647 - 000 - 
                 Freeze Frame:
                        Fault Status: 01100000
                        Fault Priority: 2
                        Fault Frequency: 1
                        Reset counter: 127
                        Mileage: 51184 km
                        Time Indication: 0
                        Date: 2036.14.26
                        Time: 20:07:41
    
                 Freeze Frame:
                        Count: 3
                        Count: 12
                        Count: 29184
                        Count: 197
                        Count: 41216
                        Count: 0
                        Count: 0
                        Count: 0
    Luckily I have another 2011 Golf R available for comparison. It has the ESP control unit with same part number (1K0 907 379 BE). Just the coding is different. If been searching and found out that part of the ESP coding is the last 5 digits of VIN. Besides those, there are just a few bits that are different between FWD Scirocco and AWD Golf. I still haven't tried coding the ESP to play with those bits (will do this coming weekend). Golf has DCC, Scirocco not. That might also explain some of the differencies on coding.

    Any hints for MK60EC1 ABS/ESP coding or will I just go with trial and error? Or am I even able to change the coding on that unit? I've read that it could be something that can only be done with dealer's tools? Basically this is the same situation if I'd try to install a used ABS control unit from FWD car to a AWD car without knowing the original coding... but if I plugged my car to dealer's system I doubt it would offer me the AWD coding anyway ;)

    Anyway, I'll post my findings after the weekend, might be interesting for someone :)

  2. #2
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    This is very interesting, I have the same conversion to do from a mk6 gti to AWD, I have most parts except from the abs unit which I was told I need to replace?! So I'll wait to see what you find before ordering anymore! 😄

  3. #3
    Benevolent Dictator Uwe's Avatar
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    Quote Originally Posted by Heikki J. View Post
    Any hints for MK60EC1 ABS/ESP coding or will I just go with trial and error? Or am I even able to change the coding on that unit? I've read that it could be something that can only be done with dealer's tools? Basically this is the same situation if I'd try to install a used ABS control unit from FWD car to a AWD car without knowing the original coding... but if I plugged my car to dealer's system I doubt it would offer me the AWD coding anyway
    Right, it most likely wouldn't, because the dealer's tool doesn't have a coding script for these MK60EC1 modules, instead it queries SVM database which simply returns the coding that the car had when it left the factory, with the factory installed equipment. With some approved retrofits, e.g. a trailer hitch installation, it's possible for the dealership to enter an "SVM Code" that tells the SVM server that there's now a trailer hitch on on this car and the SVM server then calculates a new coding for the car (and remembers that the car is supposed to be coded that way from now on).
    Unfortunately, this also makes it very hard for anyone to derive a reasonably complete coding chart for these modules. Some people claim to have it figured out; I'm not sure we really do. What should be helpful in your case is that your ABS module still has the coding for your care pre retrofit. Hopefully we'll get the right eyeballs and brain cells on this to find you a solution.

    -Uwe-

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    I tried to change the coding over the weekend without success. I get an error message "coding out of range".


    In this case I only tried to alter one of the last bytes to match the Golf coding.

    I also accidentally activated the system function test and can't complete it successfully (probably due to the coding issue) so now I have two fault codes active


    As I told, I've tried to reverse-engineer the coding by comparing the same MY Golf R I also have, here's what I've been able to find out so far. I got a lot of help from a Polish Skoda site:
    http://forum.octaviaclub.pl/printview.php?t=64157 (in Polish, use Google translator)

    Notes:
    Golf has DCC suspension, Scirocco not…
    Golf is originally AWD, Scirocco not…
    Both are MY2011, same ESP control unit (1K0 907 379 BE)


    Code:
    BYTE 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18
    I    --------------------------------------------------------
    T    74 3B 80 F5 49 24 00 FC 2E 0E 01 E8 92 22 00 41 3D 08 00
         --------------------------------------------------------
    0   | 0  1  0  1  1  0  0  0  0  0  1  0  0  0  0  1  1  0  0
    1   | 0  1  0  0  0  0  0  0  1  1  0  0  1  1  0  0  0  0  0
    2   | 1  0  0  1  0  1  0  1  1  1  0  0  0  0  0  0  1  0  0
    3   | 0  1  0  0  1  0  0  1  1  1  0  1  0  0  0  0  1  1  0
    4   | 1  1  0  1  0  0  0  1  0  0  0  0  1  0  0  0  1  0  0
    5   | 1  1  0  1  0  1  0  1  1  0  0  1  0  1  0  0  1  0  0
    6   | 1  0  0  1  1  0  0  1  0  0  0  1  0  0  0  1  0  0  0
    7   | 0  0  1  1  0  0  0  1  0  0  0  1  1  0  0  0  0  0  0
    
    
    00: 74 = 0111 0100 Scirocco R
        14 = 0001 0100 Golf R
    
    01: 3B = 0011 1011 = ? (same in Scirocco and Golf)
    
    02: 80 = 1000 0000 Brake disc diameter front 345 back 310
    
    03: F5 = VW Scirocco
        0D = VW Golf mk6
    
    04: 49 = 0100 1001 Scirocco R
        09 = 0000 1001 Golf R
    
    05: 24 = 0010 0100 VIN 13. digit = 2
    
    06: 00 = 0000 0000 = Original
        80 = 1000 0000 = 2-step ESP off -switch
    
    07: FC = 1111 1100 VIN 14. digit = 2
    
    08: 2E = 0010 1110 Scirocco R
        28 = 0010 1000 Golf R
    
    09: 0E = 0000 1110 VIN 15. digit = 3
    
    10: 01 = 0000 0001 Brake disc diameter front 345 back 310
    
    11: E8 = 1110 1000 VIN 16. digit = 4
    
    12: 92 = 1001 0010 Scirocco R
        90 = 1001 0000 Golf R
    
    13: 22 = 0010 0010 VIN 17. digit = 9
    
    14: 00 = 0000 0000 = Original
        01 = 0000 0001 = 2-step ESP off -switch
    
    15: 41 = 0100 0001 bit 0~2 = 001 = 1 Engine type = 1.8 TSI/2.0 TFSI/2.0 TSI/3,6 FSI/1.6 TDI/1.9 TDI
                       bit 4 = 0 start-stop not installed
                       bit 6~7 = 01 = LHD
    
    16: 3D = 0011 1101 bit 0 = 1 = Hill Hold Control (HHC) installed
                       bit 2 = 1 = Tire Pressure Monitoring (TPMS/PR-7K6) installed
    
    17: 08 = 0000 1000 Scirocco R bit 3 = 1 = (Extended) Electronic Differential Lock (XDS - PR-UG3/UG4) active/installed
        00 = 0000 0000 Golf R (No XDS on Golf???)
    
    
    18: 00 = 0000 0000 = ? (the same in Scirocco and Golf R)
    Bytes 00 and 08 seem to be the same but bits in reverse order
    Bytes 02 and 10 seem to be the same but bits in reverse order
    Bytes 04 and 12 seem to be the same but bits in reverse order
    Bytes 06 and 14 seem to be the same but bits in reverse order

    Bytes 06 and 14 refer to the ESP-off switch. Not sure if's possible to change the behaviour though coding. Originally the switch only disable the traction control. At least in US models it should be possible change the behaviour (according to APR website)
    Last edited by Heikki J.; 03-17-2014 at 10:38 AM.

  5. #5
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    Quote Originally Posted by dubTECH View Post
    This is very interesting, I have the same conversion to do from a mk6 gti to AWD, I have most parts except from the abs unit which I was told I need to replace?! So I'll wait to see what you find before ordering anymore! ��
    I do have one extra ABS unit from the 2010 Golf R that I took my parts (transmission and rear axle) from. It was with DCC suspension. But you'd need to recode it anyway.
    https://onedrive.live.com/redir?resi...t=photo%2c.jpg

  6. #6
    Ross-Tech Employee Dana's Avatar
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    Hello Heikki,

    I don't know that we will be able to take the original ABS coding and tweak the AWD specific bits but a large part of the VIN is encrypted into the coding as you mentioned. If you could post the pre-retrofit ABS coding with the full VIN from this car and in another clip, the factory coding from the 2011 Golf R comparison car with factory installed AWD and the VIN from that vehicle I'll take a look at it. Wrapping separate [code]s would be best so I don't confuse them.

    If you want to include Scirocco (or any other Golf based comparison scan clips and VINs feel free to do so - but I think the baseline from the two would be sufficient for now.

    -Dana

  7. #7
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    Scirocco original FWD (pre-retrofit):
    VIN: WVWZZZ13ZBV022349
    Coding: 743B80F5492400FC2E0E01E8922200413D0800

    Golf R with factory AWD:
    VIN: WVWZZZ1KZBW298583
    Coding: 143B800D092B0002281001EC901C00413D0000

    Would be fantastic if you could see what you can find out. As I wrote above I've spend couple of hours with some Polish websites trying to decrypt the coding This is what I've found so far in a bit more color coded version. If I'm right, only the bits highlighted in red are different:


    Any idea why I wasn't able to change the coding with VCDS? What does this "request out of range" -error mean?

    I'm not able to scan the Golf right now as it's being painted 50km from here. Scirocco's scan I already had on the first post. Or would you need the scan of the whole car?

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  9. #8
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    Hi Dana,

    Any new information to share to me?

  10. #9
    Ross-Tech Employee Dana's Avatar
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    Not yet so we'll get this back to the top.

  11. #10
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    I could get full scan of both cars tomorrow if that helps.

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