The below are the fault codes for the OCU in my car. (The entire log is attached).

Is this likely to be a software fix, or am I looking at a part replacement?

Address 75: Telematics (J949) Labels:* None

Part No SW: 5WA 035 284 G HW: 5WA 035 284

Component: OCUGen3High H20 0143

Serial number: 0000000911VICL1 Dataset Number: V03935425BX 0001

Coding: 034820101969A8819005460161052E07

ASAM Dataset: EV_OCUGen3High 003007

ROD: EV_OCUGen3High_003_VW41.rod

VCID: 4ACD75D0AC39174A11E-801E

2 Faults Found:

0081 - Databus

U1121 00 [00001000] - Missing Message

[Ethernet Databus missing message - Infotainment Unit]

Intermittent - Confirmed - Tested Since Memory Clear

Freeze Frame:

Fault Priority: 6

Fault Frequency: 21

Reset counter: 40

Mileage: 52727 km

Date: 2024.12.21

Time: 16:04:35

Voltage terminal 30: 13.0 V

13631561 - Internal Control Module Memory Check Sum Error

B2000 49 [00001001] - Internal Electronic Failure

[Control unit defective Analog circuitry]

Confirmed - Tested Since Memory Clear

Freeze Frame:

Fault Priority: 1

Fault Frequency: 1

Mileage: 52143 km

Date: 2024.11.22

Time: 07:00:04

Voltage terminal 30: 12.5 V

Log-TMBJW7NPXL7062163-58458km-36324mi-KDG.txt

Hi,

What symptoms do you face? I mean, what were you looking for when making this scan?

I understand, you tried to erase fault codes in module 75-Telematics and you looked int the long coding on this module too.

Did you intend change something?

Considering there are a lot of DTCs, and some of them already have several months. I would suggest erasing all of them and making a new scan to see which ones actually remain. I feel module 75 may not be the culprit.

BTW, did you ask on the ross-tech forum (assuming your HEX-V2, is an original one)? They saved me 3 or 4 times or at least they helped me checking that my dealer did not try to fool me... 😉

"B2000 49 [00001001] - Internal Electronic Failure

[Control unit defective Analog circuitry]"

based on this fault code, i would assume ur telematics control unit is no good at all and will need to b replaced entirely.

I have the dreaded "SOS call fault: please visit workshop"

This appeared shortly after the dealer updated my software last year.

Edited 5 June, 20251 yr by CageyH

OK. I think @JR RS may be right.

Do you plan to erase all fault codes and make another scan?

I have already tried this.

It does not work.

Ok, new scan done.

Less errors

It helps when you follow the instructions of the VCDS. 😉

I will upload the file later.

I made an error with the VCDS and selected the car make and model, rather than doing a CAN auto select scan. 🤡

New full scan attached. My thoughts are (hopefully) it is a software issue (based on the J794 1555 - Check Software Version Management error code).

Key points below:

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

Part No SW: 3V0 920 794 A HW: 3V0 920 794 A

Component: KOMBI 503 4194

Coding: 05A50B1A778C0008018C621B1001000880600000

Shop #: WSC 00033 790 00180

ASAM Dataset: EV_DashBoardVDDMQBA0 001042

ROD: EV_DashBoardVDDMQBA0_001_VW37.rod

VCID: 392F3A1CF9DF8CD2887-806C

2 Faults Found:

1048578 - No Basic Setting

B2010 00 [00001001] - -

[Steuerger t keine oder falsche Grundeinstellung]

Confirmed - Tested Since Memory Clear

Freeze Frame:

Fault Priority: 5

Fault Frequency: 1

Reset counter: 132

Mileage: 58507 km

Date: 2025.06.06

Time: 13:37:49

16777056 - Function Restricted due to Interrupted Communications

U1110 00 [00001001] - -

[BAP_SDS_0x46 keine Kommunikation]

Confirmed - Tested Since Memory Clear

Freeze Frame:

Fault Priority: 6

Fault Frequency: 1

Reset counter: 132

Mileage: 58507 km

Date: 2025.06.06

Time: 13:37:49

Address 5F: Information Electr. (J794) Labels:| 3G5-035-MIB-HGH3.clb

Part No SW: 3V0 035 820 B HW: 3V0 035 820

Component: MU-O-ND-EU H12 0330

Serial number: SKZAZ2X0513959 Dataset Number: V03935353QH 0001

Coding: 34820020000020000000000000000000000000000000000000

ASAM Dataset: EV_MUOIMQB 001001

ROD: EV_MUOIMQB_001_SK48.rod

VCID: 2D071E4C3D97207214F-8078

1 Fault Found:

1555 - Check Software Version Management

B201A 00 [00001001] - -

[Check software version management]

Confirmed - Tested Since Memory Clear

Freeze Frame:

Fault Priority: 6

Fault Frequency: 1

Reset counter: 40

Mileage: 58507 km

Date: 2025.06.06

Time: 13:37:49

Voltage terminal 30: 13.1 V

module_name:

Address 75: Telematics (J949) Labels:* None

Part No SW: 5WA 035 284 G HW: 5WA 035 284

Component: OCUGen3High H20 0143

Serial number: 0000000911VICL1 Dataset Number: V03935425BX 0001

Coding: 034820101969A8819005460161052E07

ASAM Dataset: EV_OCUGen3High 003007

ROD: EV_OCUGen3High_003_VW41.rod

VCID: 4ACD75D0AC39174A11D-801E

1 Fault Found:

13631561 - Internal Control Module Memory Check Sum Error

B2000 49 [00001001] - Internal Electronic Failure

[Control unit defective Analog circuitry]

Confirmed - Tested Since Memory Clear

Freeze Frame:

Fault Priority: 1

Fault Frequency: 1

Mileage: 52143 km

Date: 2024.11.22

Time: 07:00:04

Voltage terminal 30: 12.5 V

Log-TMBJW7NPXL7062163-58507km-36354mi-KG.txt

I have cleared the 5F fault.

You probably used this for the 5F DTC :

https://forums.ross-tech.com/index.php?threads/36824/

Well, which codes are left?

Three faults.

Everything but the 5F, so I think we are looking at a replacement OCU3.

A small update on this point.

Unbeknown to me, I had an extended warranty on the car when I bought it, so alI finally took the car in to get it fixed on Monday (after the service, fault check, warranty claim etc.) and I was told that it is not the OCU that needs changing, but a smaller, less expensive part.

I don't have the detail yet, but the car is going back in on Friday for the fix. Total cost is about €200. I will update the detail when I have it.

Back from the garage. An SOS repair kit was fitted (part number 5WA998085C) which costs less than €10 but including the labour, it cost me less than €200.

Much better than the cost of replacing the OCU itself.