Hi everyone ... I've just picked up a 2015 Octavia VIN TMBKC9NE1F0176363 and have some confusing issues.

The car was apparently driving but had an occasional transmission issue so it was parked up for 6 months .. we have fitted a new battery to it and cleared all faults .. on the first day it started and selected gears but we didn't road test it .. the next day it was starting engine sometimes and other times just no crank at all, and maybe half of the times it does start the engine will shut off after 2 seconds for no apparent reason .. DSG is flashing 'P' constantly and won't let me take it out of PARK .. when using shift selector override the shift lever moves between gears but the DSG doesn't actually select any gears

Scan shows no communication with DSG .. I have checked all fuses and no issues, also tested at the DSG connector and have ground and both main power sources, also have the smaller third power working just fine .. tested voltage and resistance at canbus wires and they test perfectly (around 2.3v and 2.7v with around 60 ohm resistance) ... I have also temporarily plugged in another DQ200 mechatronics and still no communication

I think I have done a fair bit of testing and just can't work it out, so I would love any input from anyone who knows more than me please

Here is a full scan from VCDS

Wednesday,14,May,2025,13:41:08:40573

VCDS -- Windows Based VAG/VAS Emulator Running on Windows 10 x64

VCDS Version: 25.3.1.1 (x64) HEX-V2 CB: 0.4671.4

Data version: 20250415 DS365.0

www.Ross-Tech.com

VIN: TMBKC9NE1F0176363 License Plate:

Mileage: 266528km-165612mi Repair Order:

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

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

Chassis Type: NE-SK37 (5Q0)

Scan: 01 02 03 08 09 10 15 16 17 19 36 42 44 52 5F

VIN: TMBKC9NE1F0176363 Mileage: 266528km-165612miles

01-Engine -- Status: Malfunction 0010

02-Auto Trans -- Status: Cannot be reached 0100

03-ABS Brakes -- Status: Malfunction 0010

08-Auto HVAC -- Status: OK 0000

09-Cent. Elect. -- Status: Malfunction 0010

10-Park/Steer Assist -- Status: Malfunction 0010

15-Airbags -- Status: Malfunction 0010

16-Steering wheel -- Status: OK 0000

17-Instruments -- Status: Malfunction 0010

19-CAN Gateway -- Status: Malfunction 0010

36-Seat Mem. Drvr -- Status: OK 0000

42-Door Elect, Driver -- Status: OK 0000

44-Steering Assist -- Status: Malfunction 0010

52-Door Elect, Pass. -- Status: OK 0000

5F-Information Electr. -- Status: OK 0000

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

Address 01: Engine (J623-CHPA) Labels:. 04E-907-309-V1.clb

Part No SW: 04E 906 016 G HW: 04E 907 309 A

Component: 1,4l R4 TSI H10 7862

Revision: WAH10--- CVN: C6F3F587

Coding: 01250012242400080000

Shop #: WSC 73430 031 00138

ASAM Dataset: EV_ECM14TFS01104E906016G 002011

ROD: EV_ECM14TFS01104E906016G.rod

VCID: 2615F7AD486EEAEAD56-8072

VINID: 91D49B4C97950560011C60C60C5E0B8D2E

2 Faults Found:

7150 - Implausible Data Received from Steering Angle Sensor Module (G85)

U0428 00 [00100111] - -

Not Confirmed - Tested Since Memory Clear

Freeze Frame:

Fault Priority: 6

Fault Frequency: 1

Mileage: 266528 km

Date: 2025.05.14

Time: 14:38:52

Engine speed: 0.00 /min

Normed load value: 0.0 %

Vehicle speed: 0 km/h

Coolant temperature: 84 °C

Intake air temperature: 26 °C

Ambient air pressure: 1010 mbar

Voltage terminal 30: 12.604 V

Unlearning counter according OBD: 40

Outside temperature: 18 °C

Absolute intake pressure: 100 kPa abs

Engine torque: 0.0 Nm

Fuel level: 10.00 l

Oxygen sensor bank 1 sensor 1: specified value: 1.0000

Engine operating condition: Idle

Engine operating condition-Test_Program_Channel 87: 5

4718 - No Communication with Transmission Control Module

U0101 00 [00100111] - -

Not Confirmed - Tested Since Memory Clear

Freeze Frame:

Fault Priority: 2

Fault Frequency: 1

Mileage: 266528 km

Date: 2025.05.14

Time: 14:38:51

Engine speed: 0.00 /min

Normed load value: 0.0 %

Vehicle speed: 0 km/h

Coolant temperature: 84 °C

Intake air temperature: 26 °C

Ambient air pressure: 1010 mbar

Voltage terminal 30: 12.604 V

Unlearning counter according OBD: 40

Outside temperature: 18 °C

Absolute intake pressure: 100 kPa abs

Engine torque: 0.0 Nm

Fuel level: 10.00 l

Oxygen sensor bank 1 sensor 1: specified value: 1.0000

Engine operating condition: Idle

Engine operating condition-Test_Program_Channel 87: 5

Readiness: 1110 0001

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

Address 02: Auto Trans

Cannot be reached

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

Address 03: ABS Brakes (J104) Labels: 5Q0-907-379-ESP-V1.clb

Part No SW: 3Q0 907 379 P HW: 3Q0 907 379 C

Component: ESC H32 0385

Revision: 00000000 Serial number: 60175000001083

Coding: 1C078A9124271172007A060641C6243851248800608224B200230030C002

Shop #: WSC 73430 031 00063

ASAM Dataset: EV_Brake1UDSContiMK100ESP 034033

ROD: EV_Brake1UDSContiMK100ESP_034_VW37.rod

VCID: 47CB5A29EF2413E20E0-8012

6 Faults Found:

0297 - Steering angle sensor

B1168 16 [10001001] - Voltage Too Low

MIL ON - Confirmed - Tested Since Memory Clear

Freeze Frame:

Fault Priority: 2

Fault Frequency: 1

Reset counter: 87

Date: 2025.05.14

Time: 14:38:51

8222 - Databus

U1121 00 [10001001] - Missing Message

[FCAN : Getriebe_11 message is not received]

MIL ON - Confirmed - Tested Since Memory Clear

Freeze Frame:

Fault Priority: 2

Fault Frequency: 1

Reset counter: 87

Date: 2025.05.14

Time: 14:38:51

8226 - Databus

U1121 00 [10001001] - Missing Message

[FCAN : Getriebe_14 message is not received]

MIL ON - Confirmed - Tested Since Memory Clear

Freeze Frame:

Fault Priority: 2

Fault Frequency: 1

Reset counter: 87

Date: 2025.05.14

Time: 14:38:51

16412 - Display for Tire Pressure Monitoring

C1146 02 [10001001] - Signal Failure

MIL ON - Confirmed - Tested Since Memory Clear

Freeze Frame:

Fault Priority: 2

Fault Frequency: 1

Reset counter: 87

Mileage: 266528 km

Date: 2025.05.14

Time: 14:39:03

16413 - Display for Tire Pressure Monitoring

C1146 02 [10001001] - Signal Failure

MIL ON - Confirmed - Tested Since Memory Clear

Freeze Frame:

Fault Priority: 2

Fault Frequency: 1

Reset counter: 87

Mileage: 266528 km

Date: 2025.05.14

Time: 14:39:03

16416 - Display for Tire Pressure Monitoring

C1146 02 [10001001] - Signal Failure

MIL ON - Confirmed - Tested Since Memory Clear

Freeze Frame:

Fault Priority: 2

Fault Frequency: 1

Reset counter: 87

Mileage: 266528 km

Date: 2025.05.14

Time: 14:39:03

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

Address 08: Auto HVAC (J255) Labels:| 5G0-907-044.clb

Part No SW: 5E0 907 044 L HW: 5E0 907 044 L

Component: Climatronic H03 0907

Revision: 00001K06

Coding: 02110004000100010005000000101000

Shop #: WSC 73430 031 00063

ASAM Dataset: EV_ACClimaBHBVW37X 003017

ROD: EV_ACClimaBHBVW37X_003_VW37.rod

VCID: 2E050F8D609EA2AA2D6-807A

Fresh air blower control module (front):

A/C pressure/coolant temperature sensor:

Air quality sensor:

No fault code found.

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

Address 09: Cent. Elect. (J519) Labels:| 5Q0-937-08X-MV1.clb

Part No SW: 5Q0 937 084 AH HW: 5Q0 937 084 AH

Component: BCM MQBAB M+ H18 0137

Serial number: 01011501400780 Dataset Number: 5E0063t____ 0067

Coding: 0F501856404702FB47E04000000407000000000000000000000000000000

Shop #: WSC 131071 1023 2097151

ASAM Dataset: EV_BCMCONTI 013000

ROD: EV_BCMBOSCH_013.rod

VCID: 7EA5FFCDF07E922AFD6-802A

Wiper motor control module:

Subsystem 1 - Part No SW: 5E2 955 119 HW: 5E2 955 119 Labels: 5QX-955-119-V1.CLB

Component: WWS371 150113 041 0570

Serial number: 150116012133

Coding: 065DDD

Rain/Light Recognition Sensor:

Subsystem 2 - Part No SW: 5Q0 955 547 A HW: 5Q0 955 547 A Labels: 5Q0-955-547.CLB

Component: RLHS 037 0059

Serial number: S4Y15M01D27H13M40S11

Coding: 00885D

Sunroof control module:

Subsystem 3 - Part No SW: 5E9 959 591 B HW: 6R0 959 591 D

Component: J245 PS24.402 H02 0003

Serial number: 0000FST0002XZ8600000

Coding: 991900

Roof shade control module:

Subsystem 4 - Part No SW: 5E9 959 591 C HW: 8V3 959 591 A

Component: J394 PS24.402 H02 0003

Serial number: 0000FST0002OJ8H00000

Coding: 991900

1 Fault Found:

555797 - Databus

U1121 00 [00001001] - Missing Message

[Getriebe_11_alt aktiv]

Confirmed - Tested Since Memory Clear

Freeze Frame:

Fault Priority: 6

Fault Frequency: 1

Reset counter: 87

Mileage: 266528 km

Date: 2025.05.14

Time: 14:38:50

Terminal 15 status: On

Terminal 50 status: OFF

CAN-Bus_aktiv: On

Status Bremslichtschalter (HW): OFF

Status Bremslichtschalter (CAN): OFF

OFF: operated

Position lamps: Not operated

Automatic high beam assist: Not operated

Low beam: Not operated

Parking light left: Not operated

Parking light right: Not operated

last_wakeup: no cause for fault protection

Voltage: 12.6 V

Outside temperature: 18.5 °C

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

Address 10: Park/Steer Assist (J791) Labels:| 5Q0-919-294.clb

Part No SW: 5Q0 919 294 E HW: 5Q0 919 294 A

Component: PARKHILFE 8K H03 0048

Revision: -------- Serial number: 39391501417746 Dataset Number: 5E0039t____ 0001

Coding: 0031151011

Shop #: WSC 73430 790 00000

ASAM Dataset: EV_EPHVA18AU3700000 002024

ROD: EV_EPHVA18AU3700000_002_VW37.rod

VCID: 3D2738C1BDF84932A4C-8068

2 Faults Found:

13637426 - Databus

U1123 00 [00001001] - Received Error Message

[ESP - ESP_21.ESP_Systemstatus - Fehlerspeicher auslesen]

Confirmed - Tested Since Memory Clear

Freeze Frame:

Fault Priority: 6

Fault Frequency: 1

Reset counter: 87

Mileage: 266528 km

Date: 2025.05.14

Time: 14:38:50

12648721 - Databus

U1121 00 [00001001] - Missing Message

[Getriebesteuergerät - Getriebe_11 - kein Signal/keine Kommunikation]

Confirmed - Tested Since Memory Clear

Freeze Frame:

Fault Priority: 6

Fault Frequency: 1

Reset counter: 87

Mileage: 266528 km

Date: 2025.05.14

Time: 14:38:50

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

Address 15: Airbags (J234) Labels:| 5Q0-959-655.clb

Part No SW: 3Q0 959 655 AA HW: 3Q0 959 655 AA

Component: Airbag VW20 012 0200

Revision: -------- Serial number: 003NYP0MMLR5 Dataset Number: 5E0003t____ 0055

Coding: 98FCC000000000005C000000008800000065

Shop #: WSC 73430 790 00138

ASAM Dataset: EV_AirbaVW20TS6VW48X 001116

ROD: EV_AirbaVW20TS6VW48X.rod

VCID: 7DA7F8C1FD788932E4C-8028

Left seat belt tensioner:

Subsystem 1 - Part No SW: 5G0 980 945 B HW: 5G0 980 945 B

Component: BeltPretRevFL H36 0350

Serial number: 34169595B09011571170

Coding: 333135

Right seat belt tensioner:

Subsystem 2 - Part No SW: 5G0 980 946 B HW: 5G0 980 946 B

Component: BeltPretRevFR H36 0350

Serial number: 34169594B09011571067

Coding: 333135

Crash sensor for side airbag: driver side:

Subsystem 3 - Part No SW: ----------- HW: 454 001 401 15

Component: SideSensor_Df 008 0887

Serial number: 3576U0000002919CC21D

Coding: 2D2D2D

Crash sensor for side airbag: passenger side:

Subsystem 4 - Part No SW: ----------- HW: 454 001 401 15

Component: SideSensor_Pf 008 0887

Serial number: 3586U0000003677CC21G

Coding: 2D2D2D

Rear Side Airbag Crash Sensor (on driver's side):

Subsystem 5 - Part No SW: ----------- HW: 454 801 501 15

Component: SideSensor_Dr 111 0148

Serial number: 3516R64898A050000006

Coding: 2D2D2D

Passenger side rear thorax airbag crash sensor:

Subsystem 6 - Part No SW: ----------- HW: 454 801 501 15

Component: SideSensor_Pr 111 0148

Serial number: 3526RFE8B8A05000000S

Coding: 2D2D2D

Crash sensor for front airbag: driver side:

Subsystem 7 - Part No SW: ----------- HW: 454 802 301 15

Component: FrontSensor_D 114 0149

Serial number: 3556VD8AE6805000000S

Coding: 2D2D2D

1 Fault Found:

1050117 - Databus

U1123 00 [00001001] - Received Error Message

[NWD: 0x086 LWI_01 error value LWI_Lenkradwinkel]

Confirmed - Tested Since Memory Clear

Freeze Frame:

Fault Priority: 6

Fault Frequency: 1

Reset counter: 87

Mileage: 266528 km

Date: 2025.05.14

Time: 14:38:50

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

Address 16: Steering wheel (J527) Labels:| 5Q0-953-549.clb

Part No SW: 5Q0 953 507 DF HW: 5Q0 953 549 C

Component: Lenks. Modul 002 0110

Revision: -------- Serial number: 28011504220187

Coding: 1410

Shop #: WSC 73430 031 00063

ASAM Dataset: EV_SMLSKLOMQB 017001

ROD: EV_SMLSKLOMQB_017.rod

VCID: 7DA7F8C1FD788932E4C-8028

No fault code found.

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

Address 17: Instruments (J285) Labels:| 5G0-920-XXX-17.clb-SRI3

Part No SW: 5E0 920 750 HW: 5E0 920 750

Component: KOMBI 304 4270

Coding: 27A40A082180000801086A001000000000000000

Shop #: WSC 73430 031 00138

ASAM Dataset: EV_DashBoardVDDMQBAB 009037

ROD: EV_DashBoardVDDMQBAB_009_VW37.rod

VCID: 619FA4B161C04DD2E04-8034

1 Fault Found:

16776983 - Databus

U1121 00 [00001001] - Missing Message

[WBA_03 keine Kommunikation]

Confirmed - Tested Since Memory Clear

Freeze Frame:

Fault Priority: 6

Fault Frequency: 1

Reset counter: 87

Mileage: 266528 km

Date: 2025.05.14

Time: 14:38:50

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

Address 19: CAN Gateway (J533) Labels:| 5Q0-907-530-V1.clb

Part No SW: 5Q0 907 530 AB HW: 5Q0 907 530 E

Component: GW MQB Mid 127 1204

Revision: -------- Serial number: 0003005969 Dataset Number: 5E0067t____ 0023

Coding: 0101003820085700EF00020C1C0F00000001050000000000000000000000

Shop #: WSC 73430 790 00138

GVL: 01543C0000000000401C00000000C80000000000000000000000000000000000

ASAM Dataset: EV_GatewLear 011020

ROD: EV_GatewLear_011.rod

VCID: 71BFD4F1B120FD52704-8024

Generator:

Multifunction steering wheel control module:

Subsystem 2 - Part No SW: 5E0 919 719 A HW: 5E0 919 719 A

Component: E221__MFL-PR6 H05 0130

Serial number: 000000000B1536170115

1 Fault Found:

131703 - No Communication with Transmission Control Module

U0101 00 [00001001] - -

[Timeout Knoten 0x77 / 02 - Steuergerät für Getriebe]

Confirmed - Tested Since Memory Clear

Freeze Frame:

Fault Priority: 2

Fault Frequency: 1

Reset counter: 87

Mileage: 266528 km

Date: 2025.05.14

Time: 14:38:50

Terminal 30 power supply: 12.5 V

Terminal 15: On

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

Address 36: Seat Mem. Drvr (J810) Labels:* None

Part No SW: 5Q0 959 760 A HW: 5Q0 959 760 A

Component: Sitzmemory H06 0009

Serial number: Y0006NLN10171

Coding: 001400000000000001A081808080000000008181000000D4

Shop #: WSC 73430 031 00138

ASAM Dataset: EV_SeatMemorDriveSide 001015

ROD: EV_SeatMemorDriveSide_001.rod

VCID: 3B2336D9A3EC47029A8-806E

No fault code found.

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

Address 42: Door Elect, Driver (J386) Labels:| 5QX-959-X93-42.clb

Part No SW: 5Q4 959 593 C HW: 5Q4 959 593 B

Component: TSG FS 009 0015

Serial number: 0000134881089 Dataset Number: 5E0222t____ 0014

Coding: 00150120DE01048000001100

Shop #: WSC 73430 790 00138

ASAM Dataset: EV_DCUDriveSideEWMAXCONT 006001

ROD: EV_DCUDriveSideEWMAXCONT_VW37.rod

VCID: 45D75021D52801F2FCC-8010

Rear Driver Side Door Control Module:

Subsystem 1 - Part No SW: 5Q0 959 812 A HW: 5Q0 959 812 A Labels: 5QX-959-81X-V1.CLB

Component: FOND_FHSG_DRV 005 0005

Serial number: 00000000000005018615

Coding: 1D0200

No fault code found.

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

Address 44: Steering Assist (J500) Labels:| 5Q0-909-144.clb

Part No SW: 5Q0 909 144 R HW: 5Q0 909 144 R

Component: EPS_MQB_ZFLS 125 1061

Dataset Number: 5E0074t____ 0014

Coding: 0102

Shop #: WSC 73430 790 00138

ASAM Dataset: EV_SteerAssisMQB 012140

ROD: EV_SteerAssisMQB_012_VW37.rod

VCID: 43D34E39DB1C3FC2D28-8016

1 Fault Found:

16130 - Steering Angle Sensor

B1168 F2 [00001001] - Not Initialized

Confirmed - Tested Since Memory Clear

Freeze Frame:

Fault Priority: 1

Fault Frequency: 1

Reset counter: 87

Mileage: 266528 km

Date: 2025.05.14

Time: 14:38:50

Motor status: 00

System status: Waiting for start request

Supply voltage: 12.50 V

Temperature: 31.0 °C

KFC: 3F

KFA: 00 02

Freeze frame conditions: 5F

uAdSensI_U1V2Filtered_gdu16: 1.20 V

uAdSensI_U5VFiltered_xdu16: 0.00000 V

uioUdNotFilt_xdu16: 12.50 V

uAdSensI_SwitchedKl30_xdu16: 12.49 V

ASC_CTRL_GET_ILWS_ERR_FLAGS: 00

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

Address 52: Door Elect, Pass. (J387) Labels:| 5QX-959-X92-52.clb

Part No SW: 5Q4 959 592 C HW: 5Q4 959 592 B

Component: TSG BFS 009 0015

Serial number: 0000134935981 Dataset Number: 5E0157t____ 0014

Coding: 00150120DE01048000001100

Shop #: WSC 73430 790 00138

ASAM Dataset: EV_DCUPasseSideEWMAXCONT 006001

ROD: EV_DCUPasseSideEWMAXCONT_VW37.rod

VCID: 44D14D25DE1238FAEB2-8010

Rear Passenger Door Control Module:

Subsystem 1 - Part No SW: 5Q0 959 811 A HW: 5Q0 959 811 A Labels: 5QX-959-81X-V1.CLB

Component: FOND_FHSG_PSG 005 0005

Serial number: 00000000000004993813

Coding: 050200

No fault code found.

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

Address 5F: Information Electr. (J794) Labels:| 5E0-035-MIB-HGH1.clb

Part No SW: 5E0 035 045 D HW: 5E0 035 045 C

Component: MU-H-N-RW H43 0371

Serial number: A314L0E7510393 Dataset Number: 5E0CV1t____ 0049

Coding: 03730208FF00000011510001001100002F0000D601000100F6

Shop #: WSC 73430 790 00063

ASAM Dataset: EV_MUHig6C3HBAS 001041

ROD: EV_MUHig6C3HBAS_VW37.rod

VCID: 1F1BE24917343B22960-804A

Display and control head 1 for information electronics:

Subsystem 1 - Part No SW: 5E0 919 606 HW: 5E0 919 606

Component: ABT_High H60 0030

Serial number: SKZ8Z9PT600G1M

Data carrier:

Subsystem 2 - Part No SW: V03 959 801 EN HW: -----------

Component: ROW 2015 --- 0039

Serial number: --------------------

No fault code found.

End----------(Elapsed Time: 01:32, VBatt start/end: 12.6V/12.5V)-----------

------------------------------15 Faults Found------------------------------

Any ideas or things to try would be really appreciated .. I'm open to any suggestions

Is it KESSY (keyless/push to start) ?

3 minutes ago, Ripmax12345 said:

Is it KESSY (keyless/push to start) ?

Normal key start on this car .. not push button

When it refused to crank did you get any message on the dash or was it just totally dead at the key? Walk me through the steps of any lights/messages came up and actions you took.

Edited 15 May, 20251 yr by Ripmax12345

Just now, Ripmax12345 said:

When it refused to crank did you get any message on the dash or was it just totally dead at the key? Walk me through the steps of any lights/messages came up and actions you took.

Normal dash lights but just no crank. So it all looked normal but acts as it would if the car wasn't in park but it was.

Without meaning to teach you to suck eggs, have you tried keeping the battery disconnected for a good 30-40 minutes? Will let everything shut down and reset properly. Might also be worth taking the battery out and hooking it up to an external charger overnight just to rule that out (I understand it's a new battery but still worth a shot) Also spotted a voltage too low fault in the Brake module.

Low voltage can cause all kinds of strange issues on the MQB platform. I'd recommend charging the battery overnight, then putting it back in and clearing ALL faults and trying again.

Edited 15 May, 20251 yr by Ripmax12345

Also being RHD, try to avoid locking the doors before disconnecting the battery. It's really awkward/risky to pull the bonnet release handle if the passenger door is closed & locked with no power. Bit of a flaw of the RHD models.

Edited 15 May, 20251 yr by Ripmax12345

?

Was the Car / DQ200 DSG one of those that from 2017 were part of the Service Campaign '34H5'. ?

Those were from 2013-2015. It was a Software Update as a measure against the possible pressure / heat issues and cracks, leaks and also failure of an accumulator.

PS.

I see you are in Australia. That was a RECALL and has been repeated 3 times.

As to the plugging in of the MCU, did you fit another MCU not just a ECU?

What was it off of?

Edited 15 May, 20251 yr by Ootohere

1 hour ago, Ripmax12345 said:

Without meaning to teach you to suck eggs, have you tried keeping the battery disconnected for a good 30-40 minutes? Will let everything shut down and reset properly. Might also be worth taking the battery out and hooking it up to an external charger overnight just to rule that out (I understand it's a new battery but still worth a shot) Also spotted a voltage too low fault in the Brake module.

Low voltage can cause all kinds of strange issues on the MQB platform. I'd recommend charging the battery overnight, then putting it back in and clearing ALL faults and trying again.

The battery was out for days and a new and freshly charged battery fitted. I'll give it another shot anyway and report back.

19 minutes ago, Ootohere said:

?

Was the Car / DQ200 DSG one of those that from 2017 were part of the Service Campaign '34H5'. ?

Those were from 2013-2015. It was a Software Update as a measure against the possible pressure / heat issues and cracks, leaks and also failure of an accumulator.

PS.

I see you are in Australia. That was a RECALL and has been repeated 3 times.

As to the plugging in of the MCU, did you fit another MCU not just a ECU?

What was it off of?

No record of this car being part of any DSG recall. I checked the VIN and apparently this vehicle wasn't listed.

I got a complete DQ200 mechatronics from a VW Eos and just plugged that in sitting in the engine bay to see if it would communicate with that one but no luck. Might be unlucky and have 2 failed TCU/MCU modules possibly so maybe I'll grab another to test just to be sure.

.

6 minutes ago, Ootohere said:

.

Installing is no issue at all, but swapping units I just wanted to test the electrical connection to see if the second unit would get communication at least, but it didn't.

Edited 15 May, 20251 yr by kakimoto33

1 hour ago, kakimoto33 said:

to see if it would communicate with that one but no luck. Might be unlucky and have 2 failed TCU/MCU modules possibly so maybe I'll grab another to test just to be sure.

Either 2 failed modules or a fuse/wiring problem?

1 minute ago, PetrolDave said:

Either 2 failed modules or a fuse/wiring problem?

All fuses are good and wiring at TCU module seems to test correctly according to the service manual.

UPDATE .. I've gotten my hands on another DQ200 mechatronic unit from a VW Polo and plugged it in (not fitted to the transmission, just sitting in the engine bay) and I can communicate with it so could swap that unit into the car but no idea how to clone the old unit without being able to communicate with that one.