8S TTRS DSG issues

[PeteJ]

I'm helping a friend with his 2018 TTRS that stated having issues with his DGG. Here is some background:

The car has had a front Wavetrac installed recently, since the install it has had multiple 10 second drag strip passes, some spirited street use and a test session on a short track. The problem surfaced after running a time attack event where it completed multiple sessions. On the way to the parking lot after the event is when it threw codes. Now the car only shifts 1-3 and this morning it will not go in reverse.

A full scan is posted below. any help or ideas would be appreciated

Saturday,17,October,2020,18:24:07:24295
VCDS -- Windows Based VAG/VAS Emulator Running on Windows 10 x64
VCDS Version: 20.4.2.0 (x64)  HEX-V2 CB: 0.4513.4
Data version: 20200730 DS317.0
www.Ross-Tech.com


VIN: WUACSAFV7J1903020   License Plate: 
Mileage: 17120km-10637mi   Repair Order: 



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


Chassis Type: FV-AU37 (8S0)
Scan: 01 02 03 05 08 09 10 14 15 16 17 19 22 3C 42 44 47 52 55 5F
          6C

VIN: WUACSAFV7J1903020   Mileage: 17120km-10637miles

01-Engine -- Status: OK 0000
02-Auto Trans -- Status: Malfunction 0010
03-ABS Brakes -- Status: OK 0000
05-Acc/Start Auth. -- Status: OK 0000
08-Auto HVAC -- Status: OK 0000
09-Cent. Elect. -- Status: OK 0000
10-Park/Steer Assist -- Status: OK 0000
14-Susp. Elect. -- Status: OK 0000
15-Airbags -- Status: OK 0000
16-Steering wheel -- Status: OK 0000
17-Instruments -- Status: OK 0000
19-CAN Gateway -- Status: OK 0000
22-AWD -- Status: OK 0000
3C-Lane Change -- Status: OK 0000
42-Door Elect, Driver -- Status: OK 0000
44-Steering Assist -- Status: OK 0000
47-Sound System -- Status: OK 0000
52-Door Elect, Pass. -- Status: OK 0000
55-Headlight Range -- Status: OK 0000
5F-Information Electr. -- Status: Malfunction 0010
6C-Back-up Cam. -- Status: OK 0000
-------------------------------------------------------------------------------
Address 01: Engine (------DAZA)       Labels:. 07K-907-309-V1.clb
   Part No SW: 8S0 907 404 G    HW: 07K 907 309 E
   Component: R5 2.5l TFSI  X22 0004  
   Revision: 53X22000    
   Coding: 1A250032242600053620
   Shop #: WSC 00000 000 00000
   ASAM Dataset: EV_ECM25TFS0118S0907404G 001004
   ROD: EV_ECM25TFS0118S0907404G.rod
   VCID: 3A2DCE3E4CDA77AB5C7-806E

No fault code found.
Readiness: 1110 0101

-------------------------------------------------------------------------------
Address 02: Auto Trans (J743)       Labels:. 0BH-927-711.clb
   Part No SW: 0DL 300 012 H    HW: 0GC 927 711 G
   Component: GSG DQ500     H06 2111  
   Revision: 00H06V07    
   Coding: 0014
   Shop #: WSC 00000 000 00000
   ASAM Dataset: EV_TCMDQ500021 001001
   ROD: EV_TCMDQ500021_001_VW36.rod
   VCID: 2E05F26E8092AB0BF0F-807A

1 Fault Found:
10726 - Gear Selector 2 
          P176B 00 [044] - Cannot be Regulated
          Intermittent - Confirmed - Tested Since Memory Clear
             Freeze Frame:
                    Fault Status: 00000001
                    Fault Priority: 0
                    Fault Frequency: 1
                    Mileage: 17120 km
                    Date: 2020.10.17
                    Time: 09:10:42

                    Engine speed: 1078.00 /min
                    Vehicle speed: 0 km/h
                    Coolant temperature: 25 °C
                    Clutch: primary stat: Neutral
                    selected gear: GANG N
                    Driving position: P
                    Engine torque: -20 Nm
                    Control Module temperature: 25 °C
                    Accelerator position: 14.4 %
                    DTC memory status: 110


-------------------------------------------------------------------------------
Address 03: ABS Brakes (J104)       Labels: 5Q0-907-379-IPB-V1.clb
   Part No SW: 8S0 907 379 J    HW: 8S0 907 379 J
   Component: ESC           H42 0050  
   Revision: 00000000    Serial number: 60828000000306
   Coding: 99AAF08D6A9915AC009108668391900635990F56A80010C10960AC
   Shop #: WSC 06385 790 00016
   ASAM Dataset: EV_Brake1UDSContiMK100IPB 061007
   ROD: EV_Brake1UDSContiMK100IPB_061.rod
   VCID: 48C9A4F60236153BDA3-801C

No fault code found.

-------------------------------------------------------------------------------
Address 05: Acc/Start Auth. (J518)       Labels:| 5Q0-959-435.clb
   Part No SW: 3Q0 959 435 G    HW: 3Q0 959 435 G
   Component: VWKESSYMQB    037 0907  
   Revision: 00037000    Serial number: 0474836805
   Coding: 030C0C1720
   Shop #: WSC 06385 790 00016
   ASAM Dataset: EV_KessyHellaMQBAB 004041
   ROD: EV_KessyHellaMQBAB.rod
   VCID: 3E25C22E50F25B8B60F-806A

   Sensor Controlled Power Rear Lid: 

No fault code found.

-------------------------------------------------------------------------------
Address 08: Auto HVAC (E87)       Labels:* None
   Part No SW: 8S0 820 043     HW: 8S0 820 043 
   Component: AC Automat    H05 0040  
   Revision: 20010000    Serial number: 18140000009000
   Coding: 400050100001041100
   Shop #: WSC 06385 790 00016
   ASAM Dataset: EV_AirCondiVAPrehAU33x 003011
   ROD: EV_AirCondiVAPrehAU33x.rod
   VCID: 6C813866760E191B9EB-8038

   Relative humidity sensor in fresh air intake duct: 
   Subsystem 1 - Part No SW: 4H0 907 658 B    HW: 4H0 907 658 B
   Component: AQ_Hum_Sensor  H02 0007 
   Serial number: 43D0512900PAG0MUFU03

   Operating and display unit 1 for air conditioning: 
   Subsystem 2 - Part No SW: 8S0 820 373 A    HW: 8S0 820 373 A
   Component: E774 BuA_1  H07 0020 
   Serial number: 00000000000000048472

   Operating and display unit 2 for air conditioning: 
   Subsystem 3 - Part No SW: 8S0 820 359 A    HW: 8S0 820 359 A
   Component: E775 BuA_2  H07 0020 
   Serial number: 00000000000000048472

   Operating and display unit 3 for air conditioning: 
   Subsystem 4 - Part No SW: 8S0 820 359     HW: 8S0 820 359 
   Component: E776 BuA_3  H07 0020 
   Serial number: 00000000000000048472

   Operating and display unit 4 for air conditioning: 
   Subsystem 5 - Part No SW: 8S0 820 359 B    HW: 8S0 820 359 B
   Component: E777 BuA_4  H07 0020 
   Serial number: 00000000000000048472

   Operating and display unit 5 for air conditioning: 
   Subsystem 6 - Part No SW: 8S0 820 373 B    HW: 8S0 820 373 B
   Component: E778 BuA_5  H07 0020 
   Serial number: 00000000000000048472

No fault code found.

-------------------------------------------------------------------------------
Address 09: Cent. Elect. (J519)       Labels:. 5Q0-937-08X-V2.clb
   Part No SW: 5Q0 937 085 BP    HW: 5Q0 937 085 BG
   Component: BCM MQBAB HNA H36 0253  
   Serial number: 01001809600282
   Coding: 000000000000000000000000000000000000000000000000000000000000
   Shop #: WSC 06385 790 00016
   ASAM Dataset: EV_BCMMQB 018001
   ROD: EV_BCMBOSCH_018.rod
   VCID: 084964F642B6D53B1A3-805C

   Control Unit For Wiper Motor: 
   Subsystem 1 - Part No SW: 8S1 955 119 B    HW: 8K1 955 119 B  Labels: 5QX-955-119-V1.CLB
   Component: 43x LL 180308  038 0371 
   Serial number: 00000001803050303274
   Coding: 1BC7F7

   Rain Light Recognition Sensor: 
   Subsystem 2 - Part No SW: 8U0 955 559 C    HW: 8U0 955 559 B  Labels: 8U0-955-559.CLB
   Component: G397_RLFS  H06 0004 
   Serial number: 63283032            
   Coding: 00005D

   Light switch: 
   Subsystem 3 - Part No SW: 8V0 941 531 AA    HW: 8V0 941 531 AA
   Component: E1 - LDS MQB  H05 0032 
   Serial number: 06 01 2018  00000700

   Garage door opener control module: 
   Subsystem 4 - Part No SW: 4N0 907 410 A    HW: 4M0 907 410 A
   Component: USHL5  H10 0100 
   Serial number: 0000009600350Z000202
   Coding: 150000

   Garage Door Opener Operating Unit: 
   Subsystem 5 - Part No SW: 8S0 959 719     HW: 8S0 959 719 
   Component: GTO BF  H05 0010 
   Serial number: 20180214065724 00004

   Alarm horn: 
   Subsystem 6 - Part No SW: 5Q0 951 605 A    HW: 5Q0 951 605 A
   Component: Sirene, DWA  005 0314 
   Serial number: 00000000000010269146

   Valve Block 1 In Driver Side Front Seat: 
   Subsystem 7 - Part No SW: 8S0 907 182     HW: 8S0 907 182 
   Component: N475 VB1 FSv  H07 0021 
   Serial number: 7008173235E172403482
   Coding: 810500

   Valve Block 1 In Passenger Side Front Seat: 
   Subsystem 8 - Part No SW: 8S0 907 182     HW: 8S0 907 182 
   Component: N477 VB1 BFSv  H07 0021 
   Serial number: 7008173235E180200489
   Coding: 810500

No fault code found.

-------------------------------------------------------------------------------
Address 10: Park/Steer Assist (J446)       Labels:| 5Q0-919-294.clb
   Part No SW: 5Q0 919 294 K    HW: 5Q0 919 294 A
   Component: PARKHILFE 8K  H03 0054  
   Revision: --------    Serial number: 39361808200181
   Coding: 0070150011
   Shop #: WSC 06385 790 00016
   ASAM Dataset: EV_EPHVA18AU3700000 002026
   ROD: EV_EPHVA18AU3700000_002_VW37.rod
   VCID: 43D3B3DA3B1036630F1-8016

No fault code found.

-------------------------------------------------------------------------------
Address 14: Susp. Elect. (J250)       Labels: 8V0-907-376.clb
   Part No SW: 8V0 907 376 H    HW: 8V0 907 376 F
   Component: DAEMPFUNGS-SG H11 0083  
   Serial number:       190318004
   ASAM Dataset: EV_AudiMagneRide 003007
   ROD: EV_AudiMagneRide_003.rod
   VCID: 46D5AACE0822034B28F-8012

No fault code found.

-------------------------------------------------------------------------------
Address 15: Airbags (J234)       Labels:| 5Q0-959-655.clb
   Part No SW: 5Q0 959 655 R    HW: 5Q0 959 655 R
   Component: AirbagVW20    010 0830  
   Serial number: 003M9R009BRM
   Coding: BFCCF0C000800000A000001FC24800000065
   Shop #: WSC 06385 790 00016
   ASAM Dataset: EV_AirbaVW20SMEVW37X 002144
   ROD: EV_AirbaVW20SMEVW37X_VW48.rod
   VCID: 4FFB8FEAE758C2039B9-801A

   Occupant Detection: 
   Subsystem 1 - Part No SW: 4M0 959 339     HW: 4M0 959 339 
   Component: BF-Gewichtss.  H11 0022 
   Serial number: IBH0000000000096M388
   Coding: 303333

   Side Sensor Driver Front: 
   Subsystem 2 - Part No SW: -----------    HW: 480 000 504 18
   Component: SideSensor_Df  001 0887 
   Serial number: 35700000000E97885F2/
   Coding: 2D2D2D

   Side Sensor Passenger Front: 
   Subsystem 3 - Part No SW: -----------    HW: 480 000 504 18
   Component: SideSensor_Pf  001 0887 
   Serial number: 35800000000A3539DE2W
   Coding: 2D2D2D

   Side Sensor Driver Rear: 
   Subsystem 4 - Part No SW: -----------    HW: 480 012 203 18
   Component: SideSensor_Dr  005 0108 
   Serial number: 351001A0D2AC42120F4%
   Coding: 2D2D2D

   Front Sensor Driver: 
   Subsystem 5 - Part No SW: -----------    HW: 480 400 503 18
   Component: FrontSensor_D  001 6149 
   Serial number: 3550002A7256299250C+
   Coding: 2D2D2D

   Front Sensor Passenger: 
   Subsystem 6 - Part No SW: -----------    HW: 480 400 503 18
   Component: FrontSensor_P  001 6149 
   Serial number: 35600029B25325B3615-
   Coding: 2D2D2D

No fault code found.

-------------------------------------------------------------------------------
Address 16: Steering wheel (J527)       Labels:| 5Q0-953-549.clb
   Part No SW: 8S0 907 129 AS    HW: 8S0 907 129 AS
   Component: Lenks. Modul  H07 0150  
   Revision: --------    Serial number: 91335RBQ00162 
   Coding: 2058
   Shop #: WSC 06385 790 00016
   ASAM Dataset: EV_SMLSKLOMQB 050001
   ROD: EV_SMLSKLOMQB_009_SE37.rod
   VCID: 0B435BFA53C0BE23371-805E

No fault code found.

-------------------------------------------------------------------------------
Address 17: Instruments (J285)       Labels:* Redir Fail!-SRI2
   Part No SW: 8S0 920 890 C    HW: 8S0 920 890 C
   Component: FBenUSA       H42 0325  
   Coding: 086F10413989CF050222ECC09800801000000000
   Shop #: WSC 06385 790 00016
   ASAM Dataset: EV_DashBoardBOSCHAU33X 001027
   ROD: EV_DashBoardBOSCHAU33X.rod
   VCID: 3A2DCE3E4CDA77AB5C7-806E

No fault code found.

-------------------------------------------------------------------------------
Address 19: CAN Gateway (J533)       Labels:* None
   Part No SW: 8S0 907 468 G    HW: 8S0 907 468 E
   Component: GW MQB TT3    022 0323  
   Serial number: 08031810520404
   Coding: 0301000424025D004B008028B80B00000000000000000000000000000001
   Shop #: WSC 06385 790 00016
   ASAM Dataset: EV_GatewContiAU33X 013005
   ROD: EV_GatewContiAU33X_013.rod
   VCID: 44D1B0C63E1E315B36B-8010

   Alternator: 

   Multi Function Steering Wheel Control Module: 
   Subsystem 2 - Part No SW: 8S0 951 523 K    HW: 8S0 951 523 K
   Component: J453 MFL  H01 0002 
   Serial number: 20180321071119 00157

   Battery Monitoring Control Module: 
   Subsystem 3 - Part No SW: 8W0 915 181     HW: 8W0 915 181 
   Component: J367-BDMHella  H10 9070 
   Serial number: 1142967004          

No fault code found.

-------------------------------------------------------------------------------
Address 22: AWD (J492)       Labels:* 0CQ-907-554.clb
   Part No SW: 0CQ 907 554 K    HW: 0CQ 525 130 
   Component: Haldex4Motion H52 7762  
   Serial number: HA1-00023.02.18
   Coding: 0701
   Shop #: WSC 06385 790 00016
   ASAM Dataset: EV_AllWheelContrHA1VW37X 002015
   ROD: EV_AllWheelContrHA1VW37X_002.rod
   VCID: 4DC795E2ED54F013E95-8018

No fault code found.

-------------------------------------------------------------------------------
Address 3C: Lane Change (J769)       Labels:| 5Q0-907-566.clb
   Part No SW: 8S0 907 566     HW: 4H0 907 566 F
   Component: SWA Master    H08 0060  
   Serial number: 0474464261
   Coding: 030311
   Shop #: WSC 06385 790 00016
   ASAM Dataset: EV_LaneChangAssis 001028
   ROD: EV_LaneChangAssis_VW51.rod
   VCID: 7CA10826066E899B0EB-8028

   Lane Change Assistant 2: 
   Subsystem 1 - Part No SW: 8S0 907 568     HW: 4H0 907 568 F
   Component: SWA Slave  H08 0060 
   Serial number: 0474649045          
   Coding: 030311

No fault code found.

-------------------------------------------------------------------------------
Address 42: Door Elect, Driver (J386)       Labels:| 5QX-959-X93-42.clb
   Part No SW: 5Q0 959 593 E    HW: 5Q0 959 593 B
   Component: TSG FS        020 0041  
   Serial number: 200318ECJ18907
   Coding: 001F53225C00040100000402
   Shop #: WSC 06385 790 00016
   ASAM Dataset: EV_DCUDriveSideEWMAXKLO 006003
   ROD: EV_DCUDriveSideEWMAXCONT.rod
   VCID: 43D3B3DA3B1036630F1-8016

No fault code found.

-------------------------------------------------------------------------------
Address 44: Steering Assist (J500)       Labels:| 5Q0-909-144.clb
   Part No SW: 3Q0 909 144 L    HW: 3Q0 909 144 L
   Component: EPS_MQB_ZFLS  507 5081  
   Coding: 811E0000
   Shop #: WSC 06385 790 00016
   ASAM Dataset: EV_SteerAssisMQB 015157
   ROD: EV_SteerAssisMQB_015.rod
   VCID: 3B23CB3A43E04EA3471-806E

No fault code found.

-------------------------------------------------------------------------------
Address 47: Sound System (J525)       Labels:* None
   Part No SW: 8S0 035 466 A    HW: 8S0 035 466 
   Component: MIB2_amp_P_TT H10 0440  
   Revision: 00000001    Serial number: AUZ8ZAJ5C00AFW6
   Coding: 0133040000AA2A2AAA0000010000
   Shop #: WSC 06385 790 00016
   ASAM Dataset: EV_AMPMst16C1Gen2ALPI 001012
   ROD: EV_AMPMst16C1Gen2ALPI_AU37.rod
   VCID: 3431E0066EBE81DB86B-8060

No fault code found.

-------------------------------------------------------------------------------
Address 52: Door Elect, Pass. (J387)       Labels:| 5QX-959-X92-52.clb
   Part No SW: 5Q0 959 592 E    HW: 5Q0 959 592 B
   Component: TSG BFS       020 0041  
   Serial number: 210318ECK27075
   Coding: 001F53225E00040100000402
   Shop #: WSC 06385 790 00016
   ASAM Dataset: EV_DCUPasseSideEWMAXKLO 006003
   ROD: EV_DCUPasseSideEWMAXCONT.rod
   VCID: 42DDB6DE240A3F6B047-8016

No fault code found.

-------------------------------------------------------------------------------
Address 55: Headlight Range (J745)       Labels:| 4H4-907-357-V2.clb
   Part No SW: 4H4 907 357 G    HW: 7P6 907 357 B
   Component: MxB-ECU       001 0115  
   Revision: --------    Serial number: --------------
   Coding: 0362001123200400
   Shop #: WSC 06385 790 00016
   ASAM Dataset: EV_HeadlRegulAUDIMXBAU64X 005012
   ROD: EV_HeadlRegulAUDIMXBAU64X_005_AU37.rod
   VCID: 3635DA0E78C293CBB8F-8062

   Led Headlamp Powermodule Left: 
   Subsystem 1 - Part No SW: 7PP 941 472 J    HW: 7PP 941 472 J  Labels: 3D0-941-329.CLB
   Component: LED LeiMo li.  H07 7560 
   Coding: E01800

   Led Headlamp Powermodule Right: 
   Subsystem 2 - Part No SW: 7PP 941 472 J    HW: 7PP 941 472 J  Labels: 3D0-941-329.CLB
   Component: LED LeiMo re.  H07 7560 
   Coding: E01800

   Left Headlamp Power Output Stage: 
   Subsystem 3 - Part No SW: 8S0 941 329     HW: 8S0 941 329   Labels: 3D0-941-329.CLB
   Component: LeiMo links  H02 S002 
   Coding: E01800

   Right Headlamp Power Output Stage: 
   Subsystem 4 - Part No SW: 8S0 941 329     HW: 8S0 941 329   Labels: 3D0-941-329.CLB
   Component: LeiMo rechts  H02 S002 
   Coding: E01800

No fault code found.

-------------------------------------------------------------------------------
Address 5F: Information Electr. (J794)       Labels:* Redir Fail!
   Part No SW: 8S0 035 025 K    HW: 8S0 035 025 B
   Component: MU-H-LNS-US   054 1173  
   Serial number: A707C0JS003440
   Coding: 013364020000000011220002041A00102F0000E1007000047E
   Shop #: WSC 06385 790 00016
   ASAM Dataset: EV_MUHig6C3Gen2HBAS 001115
   ROD: EV_MUHig6C3Gen2HBAS_VW37.rod
   VCID: 3537DD0265C498D3B15-8060

   Data medium: 
   Subsystem 1 - Part No SW: V03 959 801 GH    HW: -----------
   Component: NAR 2017/2018  --- 0060 
   Serial number: --------------------

   Multimedia Operating Unit: 
   Subsystem 2 - Part No SW: 8S0 919 614 M    HW: 8S0 919 614 M
   Component: ControlUnit_H  H30 0206 
   Serial number: APVAK102031800010081

   Compact Disc Database: 
   Subsystem 3 - Part No SW: V03 959 800 EG    HW: -----------
   Component: Gracenote2  --- 3012 
   Serial number: --------------------

1 Fault Found:
0020 - Tuner for Satellite Radio 
          B11CF 53 [009] - Deactivated
          Confirmed - Tested Since Memory Clear
             Freeze Frame:
                    Fault Status: 00000001
                    Fault Priority: 4
                    Fault Frequency: 1
                    Reset counter: 207
                    Mileage: 17120 km
                    Date: 2020.10.17
                    Time: 09:10:59

                    Voltage terminal 30: 14.8 V
                    Satellite radio tuner status-Satellite radio antenna status: Electrical OK
                    Satellite radio tuner status-Channel selection for satellite radio: 0
                    Satellite radio tuner status-Audio Signal: Not available
                    Satellite radio tuner status-Antenna current: 0 mA
                    Satellite radio tuner status-Reception quality: Not available
                    Satellite radio tuner status-Satellite radio tuner: pre-activation status: 00
                    Satellite radio tuner status-Satellite radio tuner: pre-activation value: 00


-------------------------------------------------------------------------------
Address 6C: Back-up Cam. (J772)       Labels:| 5Q0-980-556.clb
   Part No SW: 5Q0 980 556 B    HW: 5Q0 980 556 B
   Component: RVC Compact   H12 0231  
   Coding: 0233640102002001000040
   Shop #: WSC 06385 790 00016
   ASAM Dataset: EV_CamSysRVRVCPANAMQBAB 006009
   ROD: EV_CamSysRVRVCPANAMQBAB.rod
   VCID: 392FD13249DC7CB355D-806C

No fault code found.

End----------(Elapsed Time: 01:29, VBatt start/end: 12.0V/12.0V)-----------

 

[DrPeter]

Hello,

I saw this post the other day, did a little research and did not come up with much and did not post anything.

Today, I see that no one has posted a response, so today I will post a thought I had when I first saw this post, it is a saying I use every so often..
"The light that burns twice as bright, burns half as long...."

And with " multiple 10 second drag strip passes " you have burned so very very brightly .

I would personally drain the transmission fluid and inspect for any concerns, I would also recommend to pull off the cover on the transmission and look for any concerns and/or damage.

10726 - Gear Selector 2
P176B 00 [044] - Cannot be Regulated

Maybe something let go inside, R/R trans and open to inspect? Also have a look at the filter?


Hope this helps,

drpeter

 

[SpoolinFool]

Thanks PeteJ for the assist and recommendation to purchase VCDS. The Audi he mentions above is mine. Here is a follow up to the issue.

10726 - Gear Selector 2
P176B 00 [044] - Cannot be Regulated

When this code came up I lost access to all even gears as well as reverse.

I cleared this code with VDCS which allowed me to back out of the garage and shift into first gear but as soon as it went into second gear it returned. I cleared the code again and it returned. The mechatronic unit was removed and oil tube seals inspected all of which looked undamaged. The magnets in the transmission were clean as well. Upon reassembly the codes were cleared again and a different code surfaced:

10698 Gear 2
P072D 00 [047] - Not Selectable

After clearing this code, performing a basic transmission alignment, clutch adaptation and fluid flush it went away and hasn't returned. The car now runs and drives just as it did when stock. That being said I don't like it when things fix themselves.

The "best guess" at root cause thus far was possible differential break-in material hanging up or binding the operation of the even gear selector. This debris may have been unseated during the basic alignment or adaptation process. I hate having to make a guess but it's better than being forced into purchasing a new mechatronics and paying Audi to VIN code it ($1800). That being said my circle of Audi mechanics is very very small. Even the most knowledgeable person was unable to diagnose and actually suggested that the car go to Audi for an ODIS scan if the issue resurfaces.

My question for you .... if this does come back again is Audi my only hope? I have a feeling their system will simply recommend a rip and replace of the mech or DSG. Is there a VCDS diagnostic I can run that will actually tell me WHY the code is initiated?

 

[SpoolinFool]

I'm back with the same code again. Does anyone have more visibility into a root cause of a code? There certainly must be a trigger that kicks off the fault code so how do we find what that trigger is?

Right now I don't anything other than the code which is less than helpful. I've reached out to a couple different VW techs and have received feedback from replace and re-code the mechatronic to disassemble trans and replace wet clutch.
Certainly there must be additional information stored somewhere.

10726 - Gear Selector 2
P176B 00 [044] - Cannot be Regulated
Intermittent - Confirmed - Tested Since Memory Clear
Freeze Frame:
Fault Status: 00000001
Fault Priority: 0
Fault Frequency: 1
Mileage: 18204 km
Date: 2021.04.27
Time: 18:11:22

Engine RPM: 2926.00 /min
Vehicle speed: 60 km/h
Coolant temperature: 87 °C
Clutch: primary stat: Driving
selected gear: GANG_3
Driving position: d
Engine torque: 156 Nm
Control Module temperature: 37 °C
Accelerator pedal position: 36.4 %
DTC memory status: 110

 

[SpoolinFool]

If your internet search as brought you here I'll try to keep a running diary.

So far nothing summarizes this better for me than a quote from Donald Rumsfeld:
There are known knowns. These are things we know that we know.
There are known unknowns. That is to say, there are things that we know we don't know.
But there are also unknown unknowns. There are things we don't know we don't know.

Random research on the internet have resulted in random answers and I will list some below:
1. Replace Mech Unit:
--------------This is the recommendation from places that sell or repair mech units or from those unwilling to disassemble and isolate component problems.
--------------Since historically the Mech has been the root cause of many issues this recommendation is not out of line but it is expensive. It's like replacing shoes for a broken shoestring.
--------------Older non-DQ500 models have had the same error which has always been diagnosed as a mech unit replacement and that has resolved the issue. But I was unable to find people that were able to clear the code once it surfaced. Being able to return the car to normal operation thru VCDS makes it hard for me to have full confidence that electrical component failure is the issue.
2. Replace Clutch:
--------------It is true that a worn or damaged clutch needs replacement but mine functioned flawlessly for the first 500 miles and last 500 miles. I would think a damaged clutch would not be an intermittent issue.
--------------If the issue is mechanical such as a clutch ring I wouldn't expect it to work for hundreds of miles.
3. Remove Mech Cover and Inspect:
--------------I am aware there are components of the Mech that sometimes fail from solenoids to oil stack seals and magnets to circuit boards. The thing is there doesn't seam to be a document that identifies what each component is responsible for. If I consistently get a Gear Selector 2 code then what I would like is a schematic of the mech that identifies the components influencing the problematic gear set. Can anyone share a document like this?
--------------Lets say I find an issue such as broken solenoid screen, do we know a reliable source to get parts from?

Other than thru rip and replacement of parts how do we troubleshoot these transmissions? Is there a diagnostic we can run on the mech unit itself? My goal it to fully understand how this works so I can resolve my issue as well as help others in the community down the road. So any tribal knowledge you are willing to share will be greatly appreciated.

I also spoke to the dealer service advisor and a couple techs and here are some notes:
1. Rarely is there a mechanical issue with a DQ500. (Keep in mind mine has been tampered with but does work great when there is no code)
2. They are fine with using ODIS to scan the car even though it's tuned to get additional information. (ODIS clones from ebay does the same thing)
3. The mech is a simple procedure to replace and can be done without pulling the transmission. It will need to be programmed to work with the immobilizer on the car. (ODIS clone and 3rd party access can do this remotely)

 

[SpoolinFool]

Even with the overwhelming number of replies to this thread I was unable to diagnose the issue on my own. I caved and took the car to Audi for a scan. VCDS saw one code and ODIS saw dozens, all of which pointed at the mech unit as being the issue. So with the help of a very good Service Advisor and Tech I had the mech replaced and coded by Audi. This immediately resolved all shifting issues and codes. While installing the checked out the oil tube orings, shift fork magnets and inspected the fluid with no signs of anything out of the ordinary.

Yesterday I took the car to a track event where is was brutally punished without issue. I can't say that I'm 100% confident the problem is resolved but it seems unlikely that a mechanical issues inside the box or clutch fixed itself at the same time the mech was replaced. Fingers crossed. For awareness the total cost of having Audi order, replace and recode was $2700 (USD).

 

[stefdds]

Wow, you are using the car for "off road / racing" use and and want to know what "broke"..... really? (how about everything) !
I'm sure you are having a great time, but that car in relatively stock configuration (unless properly prepared) is not going to hold up to the "abuse" (yes, abuse) you are placing on it. ANY advice a service writer or tech gave you was in the context of normal daily driving and not "multiple ten second drag strip passes" or "short track runs'.
The code was initiated because you are destroying the transmission! Welcome to racing! If you continue, you are going to need "spares" : spare tires, spare wheels, spare transmissions, spare drive shafts and eventually a spare engine , spares ........... . It is a great car, but I'm afraid you have become victim to Audi's propaganda!

Hey, if that is your focus, Audi has a competition program for armatures where a car is configured for off road use ; Audi Sport , I would consider that. All the best!

 

[stefdds]

My question for you .... if this does come back again is Audi my only hope? I have a feeling their system will simply recommend a rip and replace of the mech or DSG. Is there a VCDS diagnostic I can run that will actually tell me WHY the code is initiated?

So any tribal knowledge you are willing to share will be greatly appreciated.

Please see above, post #7



If the dealer knew what you were doing with this car...........(I don't think they would even touch it!) Get ready for some catastrophic failures.

 

[Uwe]

ODIS saw dozens, all of which pointed at the mech unit as being the issue.

I don't suppose you got a print-out from them?

-Uwe-

 

[Uwe]

If the dealer knew what you were doing with this car...........(I don't think they would even touch it!)

I doubt that this is correct. As long as the customer is willing to pay for repairs, I think they will happily oblige. Now if the customer wanted it fixed under warranty, that would be a different story.

-Uwe-

 

[stefdds]

Hi Uwe, your point is well taken. Just wait for his next (post) dealer experience, you'll see what I mean!

BTW, is launch control logged (ie a count) in the the engine or trans ecu's ?

 

[0120raptor]

It`s logged in the trans and when the mech is replaced it resets to zero..

 

[PeteJ]

Wow, you are using the car for "off road / racing" use and and want to know what "broke"..... really? (how about everything) !
I'm sure you are having a great time, but that car in relatively stock configuration (unless properly prepared) is not going to hold up to the "abuse" (yes, abuse) you are placing on it. ANY advice a service writer or tech gave you was in the context of normal daily driving and not "multiple ten second drag strip passes" or "short track runs'.
The code was initiated because you are destroying the transmission! Welcome to racing! If you continue, you are going to need "spares" : spare tires, spare wheels, spare transmissions, spare drive shafts and eventually a spare engine , spares ........... . It is a great car, but I'm afraid you have become victim to Audi's propaganda!

Hey, if that is your focus, Audi has a competition program for armatures where a car is configured for off road use ; Audi Sport , I would consider that. All the best!

Normally I ignore posts like this but this type of response is beyond ridiculous.....Yes, there are those of us, MANY as a matter of fact, that use our Audi for more than shuttling the kids to soccer practice and running to Starbucks. The Audi CLUB even does on track events/driver schools on a regular basis so those of who appreciate using a car to it's fullest can do so.

Just so you are aware, there is also a special line of vehicles that Audi makes that carry an RS badge...you may want to look them up in between sips of your latte.

 

[PeteJ]

Please see above, post #7



If the dealer knew what you were doing with this car...........(I don't think they would even touch it!) Get ready for some catastrophic failures.

The dealer is well aware of how the vehicle is used and they appreciate what we do with our cars. My 2017 RS3 (number 173 of 244 cars imported to North America for that year) has a built engine, hybrid turbo and sees regular trips for items to the dealer with no issues.

And yes Launch control counters are on the car, the tune I have disables the 200 count limit and I'm well into the 400 range, most of them being at the drag strip.

 

[SpoolinFool]

No matter the feedback I am happy that people are engaging in the discussion. We need all the back and forth we can get to help move the platform forward. I 100% agree with some of the points being made. I am beating the living wiz out of this car. So much so that I actually rolled the engine tune back to something more conservative because people have been windowing the block and bending rods on E85 tunes.

As for the transmission. The DQ500 (0BT) made its debut in a Volkswagen Commercial Vehicle better known overseas as the Transporter (T5) way back in 2009. The thing is very heavy duty and rated for lots of power and torque. People are running 1000HP on these with nothing more than a TCU (mech) tune to increase clamping force and shift speeds. It's amazing what this box can handle especially on the stock clutches.

My problem was obviously self inflicted when the entire unit was disassembled to install a wavetrac LSD. The mech unit for pretty much any platform is extremely sensitive to a wide variety external contamination whether that be mechanical, electrical or even thermal. I have a friend that works as a mechanic for Porsche and he said they are replacing untouched mech units all the time. It comes with the territory.

To easy everyone's mind about Audi and service from them. The minute I put a tune on this car I accepted that I no longer have a warranty. That is a fact of life. When I called Audi the first thing I told them is that I have a highly modified RS that I broke and I need expert help fixing which will not be a warranty item. The Service Advisor was happy to help and even saved me a few bucks by discounting parts and the hourly rate for labor.

Now some people will tell you that only the engine or trans warranty is gone but that is not true. The entire warranty is now void. If the MMI goes out I could be told to go fly a kite. That being said Service Advisors have the ability to request a repair be covered and Audi normally honors the request if it is something not directly related to the tune.

What did ODIS see that VCDS didn't see? There are many variables that are monitored and stored in the TCU that can be read by VCDS. The catch is we have no way to know if they are in or out of spec. You can read the clutch and solenoid pressures but are they in spec? The specs change based on gear, load, temp and a dozen other things. ODIS will instantly identify when something isn't within spec or was previously out of spec and identify the corresponding component. This doesn't mean they will replace an individual component but at least you will know if there are issues with the clutch like an operating temp was massively exceeded.

There are still some VCDS questions that I have that I'm not sure anyone will be able to confidently provide answers for. Those mostly revolve around the process of performing adaptations and basic transmission settings. After the install of my new mech the dealer performed their sequence of tasks to reset the clutch and such. The tech runs something called "Stand still adaptation" thru ODIS. On his screen he sees Gear Selector Calibration, Sychro Points Calibration, Clutch Valve Adaptation, Clutch Safety Function Reset, Main Pressure Starting Values Reset .... and a few other non-transmission specific resets. When we open VCDS and go to basic settings then look at the drop down many of those things are in the list. But how do we know what to run and when. If Audi runs sychro point calibration and I see that in the VCDS drop down menu when do I run it? Is the process documented anywhere?

Here is a picture of my DQ 500 disassembled prior to the final drive differential wavetrac swap.

 

[Bruce]

Might those details of when to run something appear in he factory documentation? Have you had a look at the information on erWin for this vehicle? Surely the Audi tech is following some procedure beyond ODIS? Or are alluding to the fact that the guided fault finding in ODIS takes the tech through the procedure?

I'd be curious to see what information might be available for the transmission on their erWin web site.

 

[SpoolinFool]

I have scrounged all of the documentation that I can find. I have the Audi service manual, I have the DSG service manual and a few other things but as you mention the technician plugs the car in and ODIS takes him step by step on the fly of what to do next. They even have an option to level up and establish a remote session with engineering back in the motherland.

I understand that most of this stuff is probably well outside of what people use VCDS for but it can't hurt to ask if someone else has uncovered something that I haven't. Though I've gone as far as paying for Russian and Polish DQ500 transmission repair manuals and having them converted to English ha ha. So far the missing piece is an in depth mechatronics unit manual.

 

[Uwe]

Might those details of when to run something appear in he factory documentation?

I doubt it. VAG has taken to hiding much of that stuff in the ODIS "scripts".

-Uwe-

 

[NEtech]

Try for example here.

 

[SpoolinFool]

I have a follow up to this .... The transmission has been working without any errors.
The new unit did have some updates.


I have no idea what the changes were but I was able to install the same Stage 2 TCU code I was previously using. I hope the car relearns quickly as it still doesn't feel as quick shifting as it once was.