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  1. #1
    Junior Member One Ring
    Join Date
    May 30 2011
    AZ Member #
    76219
    Location
    south africa

    q7 4l BUG soft limp, no faults

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    Hi All

    I bought the above non runner, it had the steering lock actuator issue and an ecu issue. I have another exact same car, so I did an immo defeat on the working ecu so I could swap it between the 2 while sorting out the issues. After sorting out the ecu it had a turbo actuator fault so I bought a new turbo actuator and had it programmed by audi using the vas 6395, the actuator fault is now gone and there are no longer any other engine fault codes.

    Now when I drive the car it drives fine for about 200meters and then goes into soft limp with little to no power, the ecu is not storing any dtc's related to the engine or trans although the gear changes are very erratic and harsh compared to the other q7, if I stop the car and key off and key back on the car drives fine for a minute or 2 and then back into soft limp, I have no idea where to look from here?

    Any ideas?

    Saturday,12,February,2022,09:45:12:00009
    VCDS -- Windows Based VAG/VAS Emulator Running on Windows XP x86
    VCDS Version: 20.4.2.0
    Data version: 20200730 DS317.0
    www.Ross-Tech.com


    VIN: License Plate: N6-ATE
    Mileage: 213900km-132911mi Repair Order:



    --------------------------------------------------------------------------------
    --------------------------------------------------------------------------------


    Chassis Type: XX (4L0)
    Scan: 01 02 03 05 07 08 09 0E 15 16 17 18 19 34 42 46 47 4F 52 56
    61 62 69 6F 72

    VIN: XXXXXXXXXXXXXXXXX Mileage: 213900km-132911miles

    00-Steering Angle Sensor -- Status: OK 0000
    01-Engine -- Status: OK 0000
    02-Auto Trans -- Status: OK 0000
    03-ABS Brakes -- Status: OK 0000
    05-Acc/Start Auth. -- Status: OK 0000
    07-Control Head -- Status: OK 0000
    08-Auto HVAC -- Status: Malfunction 0010
    09-Cent. Elect. -- Status: Malfunction 0010
    0E-Media Player 1 -- Status: OK 0000
    15-Airbags -- Status: OK 0000
    16-Steering wheel -- Status: OK 0000
    17-Instruments -- Status: OK 0000
    18-Aux. Heat -- Status: Malfunction 0010
    19-CAN Gateway -- Status: OK 0000
    34-Level Control -- Status: Malfunction 0010
    42-Door Elect, Driver -- Status: Malfunction 0010
    46-Central Conv. -- Status: Malfunction 0010
    47-Sound System -- Status: OK 0000
    4F-Centr. Electr. II -- Status: OK 0000
    52-Door Elect, Pass. -- Status: Malfunction 0010
    56-Radio -- Status: OK 0000
    61-Battery Regul. -- Status: Malfunction 0010
    62-Door, Rear Left -- Status: Malfunction 0010
    69-Trailer -- Status: OK 0000
    6F-Centr. Conv. II -- Status: OK 0000
    72-Door, Rear Right -- Status: Malfunction 0010

    -------------------------------------------------------------------------------
    Address 01: Engine Labels: 059-907-401-ASB.clb
    Part No SW: 4L0 910 401 N HW: 4L0 907 401
    Component: 3.0L V6TDI G040AG 0030
    Revision: --H04--- Serial number: XXXXXXXXXXXXXX
    Coding: 0010779
    Shop #: WSC 02631 996 95294
    VCID: 2D5B5476B41137EE88-8078

    No fault code found.
    Readiness: 0 0 0 0 0

    -------------------------------------------------------------------------------
    Address 02: Auto Trans Labels: 09D-927-750.clb
    Part No SW: 09D 927 750 FS HW: 09D 927 750 FS
    Component: AL 750 6A 1000
    Revision: 00H64000 Serial number:
    Coding: 0000504
    Shop #: WSC 31414 790 00001
    VCID: 040DD1D2471B16A637-8050

    No fault code found.

    -------------------------------------------------------------------------------
    Address 03: ABS Brakes Labels:. 4L0-910-517-V1.clb
    Part No SW: 4L0 910 517 A HW: 4L0 614 517 A
    Component: ESP ALLRAD MK25E1 0130
    Revision: 00H22001
    Coding: 0038017
    Shop #: WSC 31414 790 00001
    VCID: 2855A5629BF312C67B-807C

    No fault code found.

    -------------------------------------------------------------------------------
    Address 05: Acc/Start Auth. Labels:. 4F0-910-852.clb
    Part No SW: 4F0 910 852 HW: 4F0 905 852 B
    Component: FBSAUDIC6 ELV H31 0220
    Revision: 31050601 Serial number: 10601100677206
    Coding: 0000147
    Shop #: WSC 01810 181 85337
    VCID: 63CFF24EA255B19E6E-8036

    Subsystem 1 - Part No: 4F0 910 131 A
    Component: FBSAUDIC6 EZS H45 0080

    Subsystem 2 - Part No: 4F0 910 220
    Component: FBSAUDIC6 IDG H01 0040

    No fault code found.

    -------------------------------------------------------------------------------
    Address 07: Control Head Labels: 4L0-910-7xx-07-H.clb
    Part No SW: 4L0 910 731 C HW: 4E0 035 729
    Component: Interfacebox H43 3450
    Revision: 00000000 Serial number: 386BP077532226
    Coding: 0002002
    Shop #: WSC 01810 996 98302
    VCID: 2855A5629BF312C67B-807C

    Subsystem 1 - Part No: 4L0 910 609
    Component: E0380 BedienteilH01 0060

    Subsystem 2 - Serial number: 00000002112987

    Subsystem 3 - Serial number: 0108.05.130000000100010081�

    Subsystem 4 - Serial number: 010081�

    No fault code found.

    -------------------------------------------------------------------------------
    Address 08: Auto HVAC Labels: None
    Part No SW: 4L0 910 043 HW: 4L0 820 043 E
    Component: KLIMABETAETIGUNGH05 0060
    Revision: 00---012 Serial number: 00000030030249
    Coding: 0001046
    Shop #: WSC 31414 790 00001
    VCID: 61C3F846B849A38E7C-8034

    1 Fault Found:
    02508 - Temperature Sensor for Refrigerant (G454)
    010 - Open or Short to Plus
    Freeze Frame:
    Fault Status: 01101010
    Fault Priority: 3
    Fault Frequency: 1
    Reset counter: 146
    Mileage: 213890 km
    Time Indication: 0
    Date: 2022.02.02
    Time: 19:06:40


    -------------------------------------------------------------------------------
    Address 09: Cent. Elect. Labels: 4F0-910-279.lbl
    Part No SW: 4F0 910 279 D HW: 4F0 907 279
    Component: ILM Fahrer H15 0190
    Revision: 00000000 Serial number: 4F0907279
    Coding: 0010102
    Shop #: WSC 02335 785 00200
    VCID: 2A515F6A85FF20D66D-807E

    Subsystem 1 - Part No: 4L2 910 113 Labels: 1KX-955-119.CLB
    Component: Wischer AU716 H08 0080
    Coding: 00064792
    Shop #: WSC 02335

    Subsystem 2 - Part No: 4E0 910 557 A Labels: 8K0-955-559.CLB
    Component: REGENLICHTSENSORH13 0090
    Coding: 00150059
    Shop #: WSC 02335

    1 Fault Found:
    02095 - Component Protection Active
    000 - -
    Freeze Frame:
    Fault Status: 01100000
    Fault Priority: 1
    Fault Frequency: 1
    Reset counter: 148
    Time Indication: 0


    -------------------------------------------------------------------------------
    Address 0E: Media Player 1 Labels: 4E0-910-111.lbl
    Part No SW: 4L0 910 110 B HW: 4L0 035 110
    Component: MP3-Changer H47 0390
    Revision: 00047005 Serial number: AUZ5ZBI8891154
    Shop #: WSC 00000 000 00000
    VCID: 1E3983BAC9B7DC7601-804A

    No fault code found.

    -------------------------------------------------------------------------------
    Address 15: Airbags Labels: 4L0-910-655.lbl
    Part No SW: 4L0 910 655 B HW: 4L0 959 655
    Component: 30 AIRBAG AUDI8RH39 0120
    Revision: 06H39000 Serial number: 0037GD08CPPN
    Coding: 0013104
    Shop #: WSC 31414 790 00001
    VCID: 2C5D59728F0B3EE69F-8078

    Subsystem 1 - Serial number: 6332QSME206C21132

    Subsystem 2 - Serial number: 6342QSME22074A0BC

    Subsystem 3 - Serial number: 6352QSME220731574

    Subsystem 4 - Serial number: 6362QSME21424B09B

    Subsystem 5 - Serial number: 63734SME1D7A791DJ

    Subsystem 6 - Serial number: 63834SME184C1A195

    No fault code found.

    -------------------------------------------------------------------------------
    Address 16: Steering wheel Labels: 4F0-910-549.lbl
    Part No SW: 4F0 910 549 HW: 4F0 953 549 A
    Component: Lenks�ulenmodul H08 0230
    Revision: 00H08000 Serial number: 90026070330228
    Coding: 0102142
    Shop #: WSC 31414 790 00001
    VCID: 66C9EB5A5167C4B689-8032

    Subsystem 1 - Part No: XXXXXXXXXXX
    Component: Lenkradmodul H07 0090

    No fault code found.

    -------------------------------------------------------------------------------
    Address 17: Instruments Labels: 4L0-910-xxx-17.lbl
    Part No SW: 4F0 910 930 C HW: 4L0 920 930 H
    Component: KOMBIINSTR. M73 H18 0170
    Revision: 00200000 Serial number: 5HG553P27
    Coding: 2593848
    Shop #: WSC 80093 222 69422
    VCID: 234FB24EE2D5F19E2E-8076

    No fault code found.

    -------------------------------------------------------------------------------
    Address 18: Aux. Heat Labels: 4L0-910-105.lbl
    Part No SW: 4L0 910 105 HW: 4L0 815 071 D
    Component: Heizgeraet H08 0080
    Revision: 0000000C Serial number: 00000009014264
    Coding: 0000001
    Shop #: WSC 31414 790 00001
    VCID: 60C5FD42B343AA8673-8034

    1 Fault Found:
    01330 - Central Control Module for Central Convenience (J393)
    004 - No Signal/Communication - Intermittent

    -------------------------------------------------------------------------------
    Address 19: CAN Gateway Labels:. 4L0-910-468.clb
    Part No SW: 4L0 910 468 HW: 4L0 907 468
    Component: J533__Gateway H06 0040
    Revision: 00H06000 Serial number: 0900B0720680A7
    Coding: E75B9E5F300202
    Shop #: WSC 31414 790 00001
    VCID: 6CDD99724F8BFEE6DF-8038

    No fault code found.

    -------------------------------------------------------------------------------
    Address 34: Level Control Labels: 4L0-910-553.lbl
    Part No SW: 4L0 910 553 B HW: 4L0 907 553
    Component: LUFTFDR.-CDC H03 7550
    Revision: --H03001 Serial number: 15.1528-0095.2
    Coding: 0015520
    Shop #: WSC 31414 790 00001
    VCID: 2953A06680F92BCE64-807C

    1 Fault Found:
    01577 - Turn-Off due to Over-Temp
    001 - Upper Limit Exceeded - Intermittent
    Freeze Frame:
    Fault Status: 00100001
    Fault Priority: 6
    Fault Frequency: 4
    Reset counter: 188
    Mileage: 213891 km
    Time Indication: 0
    Date: 2022.02.02
    Time: 21:23:37

    Freeze Frame:
    Error Code: 68


    -------------------------------------------------------------------------------
    Address 42: Door Elect, Driver Labels: 4L0-910-793-42.lbl
    Part No SW: 4L0 910 793 B HW: 4L0 959 793 B
    Component: TSG FA H12 0130
    Revision: 00-00000
    Coding: 0000603
    Shop #: WSC 31414 790 00001
    VCID: 2F674E7EBE1D45FEBA-807A

    1 Fault Found:
    01330 - Central Control Module for Central Convenience (J393)
    004 - No Signal/Communication - Intermittent
    Freeze Frame:
    Fault Status: 00100100
    Fault Priority: 4
    Fault Frequency: 2
    Reset counter: 186
    Mileage: 213872 km
    Time Indication: 0
    Date: 2022.02.02
    Time: 18:11:57


    -------------------------------------------------------------------------------
    Address 46: Central Conv. Labels:. 4L0-910-289.lbl
    Part No SW: 4L0 910 289 D HW: 4L0 907 289 A
    Component: Komfortgeraet H05 0020
    Revision: 0020 --- Serial number: 01034299550000
    Coding: 4532473
    Shop #: WSC 03163 996 87872
    VCID: 31634806A829530EAC-8064

    Subsystem 1 - Part No: 1K0 951 605 C
    Component: LIN BACKUP HORN H03 1301

    Subsystem 2 - Part No: 4F0 910 177
    Component: Innenraumueberw.H01 0020

    1 Fault Found:
    01699 - Motor for Central Locking; Hatch/Trunk (V53)
    009 - Open or Short to Ground
    Freeze Frame:
    Fault Status: 01101001
    Fault Priority: 3
    Fault Frequency: 2
    Reset counter: 148
    Mileage: 213893 km
    Time Indication: 0
    Date: 2022.02.03
    Time: 06:59:15


    -------------------------------------------------------------------------------
    Address 47: Sound System (J525) Labels: Redir Fail!
    Part No SW: 4L0 910 223 E HW: 4L0 035 223 C
    Component: DSP-AU716-RD H07 0130
    Revision: 04S00000
    Coding: 030000
    Shop #: WSC 31414 790 00001
    VCID: 2649AB5A51E704B649-8072

    No fault code found.

    -------------------------------------------------------------------------------
    Address 4F: Centr. Electr. II Labels: 4F0-910-280.lbl
    Part No SW: 4F0 910 280 HW: 4F0 907 280 E
    Component: ILM Beifahrer H10 0080
    Revision: Serial number: 00000000034927
    Coding: 0011101
    Shop #: WSC 31414 790 00001
    VCID: 5EB9C3BA89379C7641-800A

    No fault code found.

    -------------------------------------------------------------------------------
    Address 52: Door Elect, Pass. Labels: 4L0-910-793-52.lbl
    Part No SW: 4L0 910 793 B HW: 4L0 959 792 B
    Component: TSG BF H12 0130
    Revision: 00-00000
    Coding: 0000603
    Shop #: WSC 31414 790 00001
    VCID: 2F674E7EBE1D45FEBA-807A

    1 Fault Found:
    01330 - Central Control Module for Central Convenience (J393)
    004 - No Signal/Communication - Intermittent
    Freeze Frame:
    Fault Status: 00100100
    Fault Priority: 4
    Fault Frequency: 2
    Reset counter: 186
    Mileage: 213872 km
    Time Indication: 0
    Date: 2022.02.02
    Time: 18:11:57


    -------------------------------------------------------------------------------
    Address 56: Radio Labels: 4E0-910-541.lbl
    Part No SW: 4E0 910 541 Q HW: 4E0 035 541 S
    Component: TUNER EU/US/RDW H42 0620
    Revision: 00000000 Serial number: 388BW077592351
    Coding: 0000001
    Shop #: WSC 31414 790 00001
    VCID: 2E59537AB9174CF6B1-807A

    No fault code found.

    -------------------------------------------------------------------------------
    Address 61: Battery Regul. Labels: 4F0-910-181.lbl
    Part No SW: 4L0 910 181 HW: 4L0 915 181
    Component: J0644 BEM H12 0530
    Revision: -------- Serial number: 00000000006559
    Shop #: WSC 31414 790 00001
    VCID: 64CDF152A75BB6A697-8030

    Subsystem 1 - Part No: 4F0 915 105 D
    Component: von VA0 2702182500
    Coding: 344630393135313035442056413032373032313832353030
    Shop #: WSC 31414 790 00001

    1 Fault Found:
    02256 - Quiescent Current
    001 - Upper Limit Exceeded - Intermittent
    Freeze Frame:
    Fault Status: 00110001
    Fault Priority: 7
    Fault Frequency: 1
    Reset counter: 185
    Mileage: 213867 km
    Time Indication: 0
    Date: 2022.01.31
    Time: 16:06:45


    -------------------------------------------------------------------------------
    Address 62: Door, Rear Left Labels: 4L0-910-795.lbl
    Part No SW: 4L0 910 795 B HW: 4L0 959 795 B
    Component: TSG HL H21 0050
    Coding: 0000010
    Shop #: WSC 31414 790 00001
    VCID: 31634806A829530EAC-8064

    1 Fault Found:
    01330 - Central Control Module for Central Convenience (J393)
    004 - No Signal/Communication - Intermittent
    Freeze Frame:
    Fault Status: 00100100
    Fault Priority: 4
    Fault Frequency: 2
    Reset counter: 186
    Mileage: 213872 km
    Time Indication: 0
    Date: 2022.02.02
    Time: 18:11:57


    -------------------------------------------------------------------------------
    Address 69: Trailer Labels: None
    Part No SW: 4L0 910 383 HW: 4L0 907 383
    Component: ANHAENGERELEKTR 003 0020
    Coding: 0000111
    Shop #: WSC 00000 000 00000
    VCID: 68D5E5625B73D2C6BB-803C

    No fault code found.

    -------------------------------------------------------------------------------
    Address 6F: Centr. Conv. II Labels:. 4L0-910-290.lbl
    Part No SW: 4L0 910 290 A HW: 4L0 907 290 A
    Component: ILM HINTEN 2 H05 0060
    Revision: AAH05061 Serial number: 002480749-----
    Coding: 0003587
    Shop #: WSC 31414 790 00001
    VCID: 2649AB5A91E704B649-8072

    Subsystem 1 - Part No: 4L0 910 591
    Component: J_245_EE15_SKB09H10 0180

    Subsystem 2 - Part No: 4L0 910 591
    Component: J_394_EE15_SKB09H10 0180

    Subsystem 3 - Part No: 4L0 910 591
    Component: J_392_EE15_SKB09H10 0180

    No fault code found.

    -------------------------------------------------------------------------------
    Address 72: Door, Rear Right Labels: 4L0-910-795.lbl
    Part No SW: 4L0 910 795 B HW: 4L0 959 794 B
    Component: TSG HR H21 0050
    Coding: 0000010
    Shop #: WSC 31414 790 00001
    VCID: 31634806A829530EAC-8064

    4 Faults Found:
    00456 - Control Module for Access and Start Control (J518)
    008 - Implausible Signal - Intermittent
    Freeze Frame:
    Fault Status: 00101000
    Fault Priority: 4
    Fault Frequency: 12
    Reset counter: 184
    Mileage: 213850 km
    Time Indication: 0
    Date: 2006.11.23
    Time: 12:00:05

    00456 - Control Module for Access and Start Control (J518)
    004 - No Signal/Communication - Intermittent
    Freeze Frame:
    Fault Status: 00101000
    Fault Priority: 4
    Fault Frequency: 12
    Reset counter: 184
    Mileage: 213850 km
    Time Indication: 0
    Date: 2006.11.23
    Time: 12:00:05

    01299 - Diagnostic Interface for Data Bus (J533)
    008 - Implausible Signal - Intermittent
    Freeze Frame:
    Fault Status: 00101000
    Fault Priority: 4
    Fault Frequency: 4
    Reset counter: 184
    Mileage: 0 km
    Time Indication: 0

    01330 - Central Control Module for Central Convenience (J393)
    004 - No Signal/Communication - Intermittent
    Freeze Frame:
    Fault Status: 00100100
    Fault Priority: 4
    Fault Frequency: 2
    Reset counter: 186
    Mileage: 213872 km
    Time Indication: 0
    Date: 2022.02.02
    Time: 18:11:56


    End-------------------------(Elapsed Time: 02:51)--------------------------

  2. #2
    Junior Member One Ring
    Join Date
    May 30 2011
    AZ Member #
    76219
    Location
    south africa

    fixed, thanks to some help from a member on another forum and loads of vcds logging and test drives and a few sensor swaps... it ended up being the fuel temp sensor, it was sitting in the 70degree C level and should have been in the mid 50C... changed the sensor and issue resolved.

  3. #3
    Veteran Member Four Rings Zolli's Avatar
    Join Date
    Sep 29 2016
    AZ Member #
    382128
    My Garage
    2011 Q7 TDI
    Location
    Scottsdale, AZ

    Thank you for the update. That’s a super random thing to fail and cause the limp. I only have my toes in the water with VCDS, so have lots to learn.

  4. #4
    Veteran Member Four Rings Zolli's Avatar
    Join Date
    Sep 29 2016
    AZ Member #
    382128
    My Garage
    2011 Q7 TDI
    Location
    Scottsdale, AZ

    It was the 01577 Turn-off due to Over Temp fault?

  5. #5
    Junior Member One Ring
    Join Date
    May 30 2011
    AZ Member #
    76219
    Location
    south africa

    no that is for the air susepnsion, there was no fault for the limp in either engine -01 or trans -02 which are usually the only 2 things to put a car into limp

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