Main Beam 1x Flash Issue

ched

T6 Highline PV (Camper Conversion)
VIP Member
T6 Pro
I've noticed that my 1x main beam flash doesn't work when my headlight selector switch is set to side lights only position, or when set to AUTO in daylight (which equates to the same thing).

The blue main beam indicator illuminates on the dash when the control stalk is pulled, but lamps in headlight don't turn on.

However, the main beam flash DOES work as normal when the headlight selector switch is set to low beam on (and AUTO during darkness).

It's a bit of a problem on the road during daylight when trying to flash other drivers to pass etc at junctions, so would like to get it sorted.

Anybody else had this issue? My lights are retrofitted factory LEDs and there's a chance I may have incorrectly coded something during installation, but they were installed nearly 4 years ago and pretty sure I would have noticed the issue before now.

I've not got any new error codes in VCDS Autoscan (attached) which adds to the mystery!

Any info/pointers on this issue would be much appreciated - thanks!


Code:
Friday,26,September,2025,11:56:52:15218
VCDS -- Windows Based VAG/VAS Emulator Running on Windows 10 x86
VCDS Version: 25.3.2.0  HEX-V2 CB: 0.4671.4
Data version: 20250822 DS365.0
www.Ross-Tech.com


VIN: WV1ZZZ7HZKH043909   License Plate:


Chassis Type: 7H-VN75 (7E0)
Scan: 01 03 04 08 09 10 13 15 17 19 25 55 56 61 0B

VIN: WV1ZZZ7HZKH043909   Mileage: 39400km-24482miles

01-Engine -- Status: OK 0000
03-ABS Brakes -- Status: OK 0000
04-Steering Angle -- Status: OK 0000
08-Auto HVAC -- Status: OK 0000
09-Cent. Elect. -- Status: Malfunction 0010
10-Park/Steer Assist -- Status: OK 0000
13-Auto Dist. Reg -- Status: OK 0000
15-Airbags -- Status: OK 0000
17-Instruments -- Status: OK 0000
19-CAN Gateway -- Status: Malfunction 0010
25-Immobilizer -- Status: OK 0000
55-Headlight Range -- Status: OK 0000
56-Radio -- Status: Not registered 0011
61-Battery Regul. -- Status: OK 0000
-------------------------------------------------------------------------------
Address 01: Engine (2D2D2-CXHA)       Labels:. 04L-907-309-V2.clb
   Part No SW: 04L 906 056 KL    HW: 04L 907 445
   Component: R4 2.0l TDI   H02 3802 
   Revision: 23002001   
   Coding: 00194014432401090000
   Shop #: WSC 00012 790 50316
   ASAM Dataset: EV_ECM20TDI03004L906056KL 004003
   ROD: EV_ECM20TDI03004L906056KA.rod
   VCID: 015F8C20F18ABD2281D-8054
   VINID: 9E606AAAA1D8A9B600103240243FB0733F

No fault code found.
Readiness: N/A

-------------------------------------------------------------------------------
Address 03: ABS Brakes (J104)       Labels: 7E0-907-37x-MK100ESC.clb
   Part No SW: 7E0 907 379 P    HW: 7E0 907 379 M
   Component: ESC           H06 0133 
   Revision: 00000000    Serial number: 62918000002868
   Coding: 517E4098256684818A7E0276A48B21E679F100
   Shop #: WSC 00012 790 50316
   ASAM Dataset: EV_Brake1ESCCONTIVN75XGP2 011001
   ROD: EV_Brake1ESCCONTIVN75XGP2_011.rod
   VCID: 3FDB4AD8C7FE0BD2B79-806A

No fault code found.

-------------------------------------------------------------------------------
Address 04: Steering Angle (G085)       Labels:* 6R0-959-654.clb
   Part No SW: 6R0 959 654     HW: 6R0 959 654
   Component: LENKW.SENSOR  H07 0070 
   Serial number: 13101813470312
   Coding: 01
   Shop #: WSC 00000 000 00000
   ASAM Dataset: EV_LWSKLOVW25X 005001
   ROD: EV_LWSKLOVW25X.rod
   VCID: 7EA5F7DC8074C2DAFCF-802A

No fault code found.

-------------------------------------------------------------------------------
Address 08: Auto HVAC (J301)       Labels:| 7E5-907-047.clb
   Part No SW: 7E0 907 047 AK    HW: 7E0 907 047 AK
   Component: Climatic-T5   H22 0708 
   Revision: 00001002   
   Coding: 0000000003
   Shop #: WSC 00012 790 50316
   ASAM Dataset: EV_ClimaticT5 A01003
   ROD: EV_ClimaT5Basis_VN75.rod
   VCID: 73B3D6E8BB369FB2831-8026

No fault code found.

-------------------------------------------------------------------------------
Address 09: Cent. Elect. (J519)       Labels:. 7E0-937-BCM-V1.clb
   Part No SW: 7E0 937 090 D    HW: 7E0 937 090 D
   Component: BCM PQ25 Max4 H82 0762 
   Revision: B9082001    Serial number: 8601 297180548
   Coding: A0AC39980A61341193284F347CEB9670D084738F60CD79503304003F0860
   Shop #: WSC 01369 210 40505
   VCID: 2C010D942608804A02B-8078

   Subsystem 1 - Part No: 5K7 955 559 C  Labels: 5K7-955-559.CLB
   Component: RLS 171018 05  50  0106
   Coding: 0228EE

   Subsystem 2 - Part No SW: 7E0 959 801 P    HW: 7E0 959 801 P  Labels: 7E0-959-80X-V2.CLB
   Component: J386__TSG_FT  004 0653
   Serial number: KU0KU001101882740141
   Coding: 1400B0

   Subsystem 3 - Part No SW: 7E0 959 802 P    HW: 7E0 959 802 P
   Component: J387__TSG_BT  004 0653
   Serial number: KU0KU019101882921610
   Coding: 0400A0

   Subsystem 4 - Part No: 7E1 951 172
   Component: DWA-Sensor 00  001 0104
   Coding: 000000

   Subsystem 5 - Part No: 1K0 951 605 F
   Component: LIN BACKUP HO  H01 0009
   Coding: 000000

   Subsystem 6 - Part No: 7E1 951 172
   Component: DWA-Sensor 00  001 0104
   Coding: 000000

   Subsystem 7 - Part No SW: 7E0 959 442     HW: 7E0 959 442   Labels: 3C8-959-537.CLB
   Component: E221__MFL-DC1  H02 0103
   Serial number: 39180001895190098383
   Coding: B0FFFF

1 Fault Found:
00979 - Lamp for Low Beam; Right (M31)
            010 - Open or Short to Plus
             Freeze Frame:
                    Fault Status: 01101010
                    Fault Priority: 3
                    Fault Frequency: 1
                    Reset counter: 185
                    Mileage: 39405 km
                    Time Indication: 0
                    Date: 2020.02.17.
                    Time: 10:42:36


-------------------------------------------------------------------------------
Address 10: Park/Steer Assist (J446)       Labels:| 7E0-919-475.clb
   Part No SW: 7E0 919 475 T    HW: 1Q0 919 475
   Component: PARKHILFE 4K  H03 0212 
   Revision: --------    Serial number: 32961821504623
   Coding: 108008
   Shop #: WSC 00012 790 50316
   ASAM Dataset: EV_VW75XParkAssis4K 001013
   ROD: EV_VW75XParkAssis4K_001_VN75.rod
   VCID: 43D34628AB166F32D31-8016

No fault code found.

-------------------------------------------------------------------------------
Address 13: Auto Dist. Reg (J428)       Labels:| 7N0-907-572.clb
   Part No SW: 7N0 907 572 C    HW: 7E0 907 572
   Component: ACC Bosch PQx H03 0211 
   Serial number: 1810180440A810 Dataset Number: 7E0114v____ 0009
   Coding: 00004000FE0779
   Shop #: WSC 01383 790 50316
   ASAM Dataset: EV_ACCBEGVW361 001006
   ROD: EV_ACCBEGVW361.rod
   VCID: 36352FFCE8C4CA9A64F-8062

No fault code found.

-------------------------------------------------------------------------------
Address 15: Airbags (J234)       Labels:| 5K0-959-655.clb
   Part No SW: 7E0 959 655 J    HW: 7E0 959 655 J
   Component: VW10Airbag021 010 0018 
   Revision: --------    Serial number: 003EK002XBA7 Dataset Number: 7E0003V____ 0905
   Coding: 000000000000000000000000000000003231
   Shop #: WSC 00012 790 50316
   ASAM Dataset: EV_AirbaVW10BPAVW12X 001028
   ROD: EV_AirbaVW10BPAVN750.rod
   VCID: 3D2730D0CDF219C2A55-8068

No fault code found.

-------------------------------------------------------------------------------
Address 17: Instruments (J285)       Labels:| 5K0-920-xxx-17.clb-SRI1
   Part No SW: 7E0 920 971 A    HW: 7E0 920 971 A
   Component: KOMBI         H02 2030 
   Serial number: 00000000000000
   Coding: 750B010300
   Shop #: WSC 00012 790 50316
   ASAM Dataset: EV_Kombi_UDS_VDD_RM09 A05736
   ROD: EV_Kombi_UDS_VDD_RM09_005_VW32.rod
   VCID: 290FF480297A9562F9D-807C

No fault code found.

-------------------------------------------------------------------------------
Address 19: CAN Gateway (J533)       Labels:. 7E0-909-901.clb
   Part No SW: 7E0 909 901     HW: 7E0 937 090 D
   Component: GW-K-CAN TP20 H82 0762 
   Revision: B9082001   
   Coding: 742305
   Shop #: WSC 01369 210 40505
   VCID: 6889B184F2706C6A263-803C

1 Fault Found:
01044 - Control Module Incorrectly Coded
            000 - -
             Freeze Frame:
                    Fault Status: 01100000
                    Fault Priority: 2
                    Fault Frequency: 7
                    Reset counter: 255
                    Mileage: 37048 km
                    Time Indication: 0
                    Date: 2019.04.09.
                    Time: 11:12:35


-------------------------------------------------------------------------------
Address 25: Immobilizer (J334)       Labels:| 5K0-920-xxx-25.clb
   Part No SW: 5K0 953 234     HW: 5K0 953 234
   Component: IMMO          H02 2030 
   Serial number:               
   Coding: 000002
   Shop #: WSC 00012 790 50316
   ASAM Dataset: EV_Immo_UDS_VDD_RM09 A03710
   ROD: EV_Immo_UDS_VDD_RM09_VW32.rod
   VCID: 6A8DCB8CECFC5E7A307-803E

No fault code found.

-------------------------------------------------------------------------------
Address 55: Headlight Range (J431)       Labels:. 6R0-907-357.clb
   Part No SW: 6R0 907 357 C    HW: 6R0 907 357 B
   Component: AFS-ECU       005 0050 
   Revision: --------    Serial number: -------------- Dataset Number: V03600027F0 0002
   Coding: 0FCE020001000000
   Shop #: WSC 12345 123 12345
   ASAM Dataset: EV_HeadlRegulVWLWRCC 002006
   ROD: EV_HeadlRegulVWLWRCC_VW46.rod
   VCID: 3A2D3BCCDCDC2EFA807-806E

No fault code found.

-------------------------------------------------------------------------------
Address 56: Radio
Cannot be reached

-------------------------------------------------------------------------------
Address 61: Battery Regul. (J840)       Labels:. 1K0-907-534.clb
   Part No SW: 7E0 907 534     HW: 7E0 937 090 D
   Component: Batt.regelung H82 0762 
   Serial number: 8601 297180548
   Coding: 030B1A73
   Shop #: WSC 00012 790 00000
   VCID: 6889B184F2706C6A263-803C

   Subsystem 1 - Part No SW: 7E0 915 181 K    HW: 7E0 915 181 K
   Component: J367-BDMConti  H03 1050
   Serial number: 75885701001810110093

No fault code found.

End----------(Elapsed Time: 01:57, VBatt start/end: 14.9V/13.8V)-----------
------------------------------2 Faults Found-------------------------------
 
late to the party, I have same issue on same OEM retrofit LEDs. Did you make any progress?

I’ve only just noticed, retrofit was 6 years back.
 
I've noticed that my 1x main beam flash doesn't work when my headlight selector switch is set to side lights only position, or when set to AUTO in daylight (which equates to the same thing).

The blue main beam indicator illuminates on the dash when the control stalk is pulled, but lamps in headlight don't turn on.

However, the main beam flash DOES work as normal when the headlight selector switch is set to low beam on (and AUTO during darkness).

It's a bit of a problem on the road during daylight when trying to flash other drivers to pass etc at junctions, so would like to get it sorted.

Anybody else had this issue? My lights are retrofitted factory LEDs and there's a chance I may have incorrectly coded something during installation, but they were installed nearly 4 years ago and pretty sure I would have noticed the issue before now.

I've not got any new error codes in VCDS Autoscan (attached) which adds to the mystery!

Any info/pointers on this issue would be much appreciated - thanks!


Code:
Friday,26,September,2025,11:56:52:15218
VCDS -- Windows Based VAG/VAS Emulator Running on Windows 10 x86
VCDS Version: 25.3.2.0  HEX-V2 CB: 0.4671.4
Data version: 20250822 DS365.0
www.Ross-Tech.com


VIN: WV1ZZZ7HZKH043909   License Plate:


Chassis Type: 7H-VN75 (7E0)
Scan: 01 03 04 08 09 10 13 15 17 19 25 55 56 61 0B

VIN: WV1ZZZ7HZKH043909   Mileage: 39400km-24482miles

01-Engine -- Status: OK 0000
03-ABS Brakes -- Status: OK 0000
04-Steering Angle -- Status: OK 0000
08-Auto HVAC -- Status: OK 0000
09-Cent. Elect. -- Status: Malfunction 0010
10-Park/Steer Assist -- Status: OK 0000
13-Auto Dist. Reg -- Status: OK 0000
15-Airbags -- Status: OK 0000
17-Instruments -- Status: OK 0000
19-CAN Gateway -- Status: Malfunction 0010
25-Immobilizer -- Status: OK 0000
55-Headlight Range -- Status: OK 0000
56-Radio -- Status: Not registered 0011
61-Battery Regul. -- Status: OK 0000
-------------------------------------------------------------------------------
Address 01: Engine (2D2D2-CXHA)       Labels:. 04L-907-309-V2.clb
   Part No SW: 04L 906 056 KL    HW: 04L 907 445
   Component: R4 2.0l TDI   H02 3802
   Revision: 23002001 
   Coding: 00194014432401090000
   Shop #: WSC 00012 790 50316
   ASAM Dataset: EV_ECM20TDI03004L906056KL 004003
   ROD: EV_ECM20TDI03004L906056KA.rod
   VCID: 015F8C20F18ABD2281D-8054
   VINID: 9E606AAAA1D8A9B600103240243FB0733F

No fault code found.
Readiness: N/A

-------------------------------------------------------------------------------
Address 03: ABS Brakes (J104)       Labels: 7E0-907-37x-MK100ESC.clb
   Part No SW: 7E0 907 379 P    HW: 7E0 907 379 M
   Component: ESC           H06 0133
   Revision: 00000000    Serial number: 62918000002868
   Coding: 517E4098256684818A7E0276A48B21E679F100
   Shop #: WSC 00012 790 50316
   ASAM Dataset: EV_Brake1ESCCONTIVN75XGP2 011001
   ROD: EV_Brake1ESCCONTIVN75XGP2_011.rod
   VCID: 3FDB4AD8C7FE0BD2B79-806A

No fault code found.

-------------------------------------------------------------------------------
Address 04: Steering Angle (G085)       Labels:* 6R0-959-654.clb
   Part No SW: 6R0 959 654     HW: 6R0 959 654
   Component: LENKW.SENSOR  H07 0070
   Serial number: 13101813470312
   Coding: 01
   Shop #: WSC 00000 000 00000
   ASAM Dataset: EV_LWSKLOVW25X 005001
   ROD: EV_LWSKLOVW25X.rod
   VCID: 7EA5F7DC8074C2DAFCF-802A

No fault code found.

-------------------------------------------------------------------------------
Address 08: Auto HVAC (J301)       Labels:| 7E5-907-047.clb
   Part No SW: 7E0 907 047 AK    HW: 7E0 907 047 AK
   Component: Climatic-T5   H22 0708
   Revision: 00001002 
   Coding: 0000000003
   Shop #: WSC 00012 790 50316
   ASAM Dataset: EV_ClimaticT5 A01003
   ROD: EV_ClimaT5Basis_VN75.rod
   VCID: 73B3D6E8BB369FB2831-8026

No fault code found.

-------------------------------------------------------------------------------
Address 09: Cent. Elect. (J519)       Labels:. 7E0-937-BCM-V1.clb
   Part No SW: 7E0 937 090 D    HW: 7E0 937 090 D
   Component: BCM PQ25 Max4 H82 0762
   Revision: B9082001    Serial number: 8601 297180548
   Coding: A0AC39980A61341193284F347CEB9670D084738F60CD79503304003F0860
   Shop #: WSC 01369 210 40505
   VCID: 2C010D942608804A02B-8078

   Subsystem 1 - Part No: 5K7 955 559 C  Labels: 5K7-955-559.CLB
   Component: RLS 171018 05  50  0106
   Coding: 0228EE

   Subsystem 2 - Part No SW: 7E0 959 801 P    HW: 7E0 959 801 P  Labels: 7E0-959-80X-V2.CLB
   Component: J386__TSG_FT  004 0653
   Serial number: KU0KU001101882740141
   Coding: 1400B0

   Subsystem 3 - Part No SW: 7E0 959 802 P    HW: 7E0 959 802 P
   Component: J387__TSG_BT  004 0653
   Serial number: KU0KU019101882921610
   Coding: 0400A0

   Subsystem 4 - Part No: 7E1 951 172
   Component: DWA-Sensor 00  001 0104
   Coding: 000000

   Subsystem 5 - Part No: 1K0 951 605 F
   Component: LIN BACKUP HO  H01 0009
   Coding: 000000

   Subsystem 6 - Part No: 7E1 951 172
   Component: DWA-Sensor 00  001 0104
   Coding: 000000

   Subsystem 7 - Part No SW: 7E0 959 442     HW: 7E0 959 442   Labels: 3C8-959-537.CLB
   Component: E221__MFL-DC1  H02 0103
   Serial number: 39180001895190098383
   Coding: B0FFFF

1 Fault Found:
00979 - Lamp for Low Beam; Right (M31)
            010 - Open or Short to Plus
             Freeze Frame:
                    Fault Status: 01101010
                    Fault Priority: 3
                    Fault Frequency: 1
                    Reset counter: 185
                    Mileage: 39405 km
                    Time Indication: 0
                    Date: 2020.02.17.
                    Time: 10:42:36


-------------------------------------------------------------------------------
Address 10: Park/Steer Assist (J446)       Labels:| 7E0-919-475.clb
   Part No SW: 7E0 919 475 T    HW: 1Q0 919 475
   Component: PARKHILFE 4K  H03 0212
   Revision: --------    Serial number: 32961821504623
   Coding: 108008
   Shop #: WSC 00012 790 50316
   ASAM Dataset: EV_VW75XParkAssis4K 001013
   ROD: EV_VW75XParkAssis4K_001_VN75.rod
   VCID: 43D34628AB166F32D31-8016

No fault code found.

-------------------------------------------------------------------------------
Address 13: Auto Dist. Reg (J428)       Labels:| 7N0-907-572.clb
   Part No SW: 7N0 907 572 C    HW: 7E0 907 572
   Component: ACC Bosch PQx H03 0211
   Serial number: 1810180440A810 Dataset Number: 7E0114v____ 0009
   Coding: 00004000FE0779
   Shop #: WSC 01383 790 50316
   ASAM Dataset: EV_ACCBEGVW361 001006
   ROD: EV_ACCBEGVW361.rod
   VCID: 36352FFCE8C4CA9A64F-8062

No fault code found.

-------------------------------------------------------------------------------
Address 15: Airbags (J234)       Labels:| 5K0-959-655.clb
   Part No SW: 7E0 959 655 J    HW: 7E0 959 655 J
   Component: VW10Airbag021 010 0018
   Revision: --------    Serial number: 003EK002XBA7 Dataset Number: 7E0003V____ 0905
   Coding: 000000000000000000000000000000003231
   Shop #: WSC 00012 790 50316
   ASAM Dataset: EV_AirbaVW10BPAVW12X 001028
   ROD: EV_AirbaVW10BPAVN750.rod
   VCID: 3D2730D0CDF219C2A55-8068

No fault code found.

-------------------------------------------------------------------------------
Address 17: Instruments (J285)       Labels:| 5K0-920-xxx-17.clb-SRI1
   Part No SW: 7E0 920 971 A    HW: 7E0 920 971 A
   Component: KOMBI         H02 2030
   Serial number: 00000000000000
   Coding: 750B010300
   Shop #: WSC 00012 790 50316
   ASAM Dataset: EV_Kombi_UDS_VDD_RM09 A05736
   ROD: EV_Kombi_UDS_VDD_RM09_005_VW32.rod
   VCID: 290FF480297A9562F9D-807C

No fault code found.

-------------------------------------------------------------------------------
Address 19: CAN Gateway (J533)       Labels:. 7E0-909-901.clb
   Part No SW: 7E0 909 901     HW: 7E0 937 090 D
   Component: GW-K-CAN TP20 H82 0762
   Revision: B9082001 
   Coding: 742305
   Shop #: WSC 01369 210 40505
   VCID: 6889B184F2706C6A263-803C

1 Fault Found:
01044 - Control Module Incorrectly Coded
            000 - -
             Freeze Frame:
                    Fault Status: 01100000
                    Fault Priority: 2
                    Fault Frequency: 7
                    Reset counter: 255
                    Mileage: 37048 km
                    Time Indication: 0
                    Date: 2019.04.09.
                    Time: 11:12:35


-------------------------------------------------------------------------------
Address 25: Immobilizer (J334)       Labels:| 5K0-920-xxx-25.clb
   Part No SW: 5K0 953 234     HW: 5K0 953 234
   Component: IMMO          H02 2030
   Serial number:             
   Coding: 000002
   Shop #: WSC 00012 790 50316
   ASAM Dataset: EV_Immo_UDS_VDD_RM09 A03710
   ROD: EV_Immo_UDS_VDD_RM09_VW32.rod
   VCID: 6A8DCB8CECFC5E7A307-803E

No fault code found.

-------------------------------------------------------------------------------
Address 55: Headlight Range (J431)       Labels:. 6R0-907-357.clb
   Part No SW: 6R0 907 357 C    HW: 6R0 907 357 B
   Component: AFS-ECU       005 0050
   Revision: --------    Serial number: -------------- Dataset Number: V03600027F0 0002
   Coding: 0FCE020001000000
   Shop #: WSC 12345 123 12345
   ASAM Dataset: EV_HeadlRegulVWLWRCC 002006
   ROD: EV_HeadlRegulVWLWRCC_VW46.rod
   VCID: 3A2D3BCCDCDC2EFA807-806E

No fault code found.

-------------------------------------------------------------------------------
Address 56: Radio
Cannot be reached

-------------------------------------------------------------------------------
Address 61: Battery Regul. (J840)       Labels:. 1K0-907-534.clb
   Part No SW: 7E0 907 534     HW: 7E0 937 090 D
   Component: Batt.regelung H82 0762
   Serial number: 8601 297180548
   Coding: 030B1A73
   Shop #: WSC 00012 790 00000
   VCID: 6889B184F2706C6A263-803C

   Subsystem 1 - Part No SW: 7E0 915 181 K    HW: 7E0 915 181 K
   Component: J367-BDMConti  H03 1050
   Serial number: 75885701001810110093

No fault code found.

End----------(Elapsed Time: 01:57, VBatt start/end: 14.9V/13.8V)-----------
------------------------------2 Faults Found-------------------------------
Can’t help with the fault sorry. But the neurodiverse part of me is making me tell you that’s not how lights are supposed to be used and it really irritates me.

What the Highway Code Says:
  • Rule 110: "Only flash your headlights to let other road users know that you are there. Do not flash your headlights to convey any other message or intimidate other road users".
  • Rule 111: "Never assume that flashing headlights is a signal inviting you to proceed. Use your own judgment and proceed carefully".


Common Misuses (and why they're wrong):
  • Warning of Speed Cameras/Police: Flashing to warn others about speed checks is a common practice but is technically a breach of the Highway Code and can lead to fines,
  • Thanking Someone: Using flashes to say thanks (e.g., for letting you pass) is also not permitted,
  • Intimidation/Giving Way: Using them to tell someone to move or that you're letting them go is against the rules.





Consequences of Misuse:
  • Breaching these rules can result in fines of up to £1,000
  • It can also be used as evidence in court if it leads to an obstruction or dangerous situation
 
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