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Thread: Coding used ecu 1998 a4

  1. #1
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    Coding used ecu 1998 a4

    i have installed a used ecu in a 1998 a4 . the ecu came out of a 2wd auto and is going into a awd manual. i have gone into the coding on the engine module and entered the correct code then clicked do it. the computer will then go to the previous screen . it pulls up and in the line where it says soft coding will appear the old code. there is the little symbol rotating like it is doing something but it never gets any further. if i click on coding again it comes up with the original code not the new one. below the code there is a window that says shop code or something like that and it is filled with zeros . what am i doing wrong ? thanks , jeff

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    Benevolent Dictator Uwe's Avatar
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    Which engine? 1.8T or 2.8 V6?

    Try a Login with 01283 before changing the coding.

    -Uwe-
    The engineering problems are likely insurmountable. It would be like proposing to land a rocket booster section on a barge floating in the middle of the ocean.

  3. #3
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    the engine is a 1.8t

  4. #4
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    will try try the 01283 code . thanks jeff

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    i have tried using the 01283 code in the login , in the upper left corner of the screen just getting the spinning loading symbol. i let it go for about 10 minutes but nothing happened . i then went forward to the coding screen and tried it again, same thing, i then tried the code in the box where it says shop. should i try to change the coding on the old ecu to see if it works. i am replacing the old ecu because the idle control circuit is bad. the idle circuit is working fine with the used ecu i installed. thanks , jeff

  6. #6
    Administrator Andy's Avatar
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    Please post a complete AutoScan and let us know the VIN.

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    Code:
    Monday,22,February,2016,18:37:11:26471
    VCDS -- Windows Based VAG/VAS Emulator Running on Windows 7 x64
    VCDS Version: 15.7.3.0 (x64)
    Data version: 20151216
    www.Ross-Tech.com
    
    
    VIN: WAUCB28D0WA136610   License Plate: 
    Mileage: 327300km-203374mi   Repair Order: 
    
    
    
    --------------------------------------------------------------------------------
    --------------------------------------------------------------------------------
    
    
    Chassis Type: 8D - Audi A4/S4/RS4 B5 (1995 > 2001)
    Scan: 01 02 03 08 15 16 17 25 35 37 45 55 56 57 67 75 76 77
     
       Mileage: 327300km-203374miles
    -------------------------------------------------------------------------------
    Address 01: Engine        Labels: 058-907-55x-AEBN.lbl
       Part No: 8D0 907 557 N
       Component: 1.8l R4/5VT MOTR AT D03  
       Coding: 06051
       Shop #: WSC 00000  
       VCID: 3B7B3CAB2902C7E664-4B18
    
    4 Faults Found:
    18010 - Power Supply Terminal 30 
                P1602 - 35-10 - Voltage too Low - Intermittent
    18021 - MIL Control Circuit 
                P1613 - 35-00 - Open or Short to Plus
    17956 - Boost Pressure Regulation Valve (N75) 
                P1548 - 35-00 - Open Circuit
    17967 - Throttle Body (J338) 
                P1559 - 35-10 - Fault in basic settings - Intermittent
    Readiness: 0010 0101
    
    -------------------------------------------------------------------------------
    Address 03: ABS Brakes        Labels: 8E0-614-111-EDS.lbl
       Part No: 8E0 614 111 M
       Component: ABS/EDS 5.3 QUATTRO D31  
       Shop #: BB 24302  
       VCID: 2851F3E7C8947C7E19-515A
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 08: Auto HVAC        Labels: 8L0-820-043-2D.lbl
       Part No: 8L0 820 043 D
       Component: A4 KLIMAVOLLAUTOMAT_D75  
       Coding: 04162
       Shop #: WSC 06335  
       VCID: 2957F6E3D39E457606-25D0
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 15: Airbags        Labels: 8D0-959-655-AI7.lbl
       Part No: 8D0 959 655 M
       Component: Airbag 7 Audi      0502  
       Coding: 00104
       Shop #: WSC 06335  
       VCID: 40814B4740E4A43E31-5178
    
    1 Fault Found:
    00532 - Supply Voltage B+ 
                07-10 - Signal too Low - Intermittent
    
    -------------------------------------------------------------------------------
    Address 17: Instruments        Labels: 8D0-919-xxx-17.lbl
       Part No: 8D0 919 930 LX
       Component: B5-KOMBIINSTR. VDO D10   
       Coding: 06242
       Shop #: WSC 42608  
       VCID: 0F23B87B4D3A0B46F8-5178
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 35: Centr. Locks        Labels: 8D0-862-257.lbl
       Part No: 8L0 862 257 N
       Component: CV-Pump             D05  
       Coding: 16236
       Shop #: WSC 30011  
       VCID: 40814B4740E4A43E31-4F02
    
    1 Fault Found:
    01367 - Central Locking Pump Run Time Exceeded (Likely Leak) 
                35-00 -  - 
    
    -------------------------------------------------------------------------------
    Address 45: Inter. Monitor        Labels: 4B0-951-173.lbl
       Part No: 4B0 951 173 
       Component: Innenraumueberw.    D03  
       Coding: 00101
       Shop #: WSC 06335  
       VCID: 60C1ABC7E024C43E11-4B7C
    
    No fault code found.
    
    End-------------------------(Elapsed Time: 03:47)--------------------------
    Last edited by Uwe; 02-23-2016 at 08:25 AM. Reason: CODE tags

  8. #8
    Benevolent Dictator Uwe's Avatar
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    So correct coding for the ECU in this car should be 06251.

    A stock ECU should accept this, but in the distant past, we did see some of these ECUs that had been "chipped" that refused to accept certain coding changes.

    -Uwe-
    The engineering problems are likely insurmountable. It would be like proposing to land a rocket booster section on a barge floating in the middle of the ocean.

  9. #9
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    do you think i should try anther ecu ?

  10. #10
    Benevolent Dictator Uwe's Avatar
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    I would open this one up and look for signs of it being chipped. Those ECUs were usually modified by soldering not by flashing, not by flashing through the data port, and often (but not always) using a daughter board.

    -Uwe-
    The engineering problems are likely insurmountable. It would be like proposing to land a rocket booster section on a barge floating in the middle of the ocean.

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