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Thread: Disable lights monitoring

  1. #1
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    Question Disable lights monitoring

    Car in question is a 2011 Octavia 2 RS FL.
    I have replaced the standard indicator bulbs with LEDs and as expected I'm getting errors on all 4 as well as the so-called "hyper-blinking" of the dash indicator arrows along with the fast ticking (on the outside, blinkers work normally).
    I would really like to have the monitoring disabled on all bulbs if possible, because I'm planning to replace them all with LEDs.
    Is this possible only with VCDS alone, because I've tried and I don't have the option to disable monitoring, seeing as I have an all-in-one BCM (or so I'm told)
    Thank you so much for any suggestions!

  2. #2
    Verified VCDS User PetrolDave's Avatar
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    Please post an Auto-Scan so we can see what BCM you have, and what other modules are fitted to your Octavia 2.

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  4. #3
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    Here is the auto-scan, thanks again:

    Code:
    Thursday,10,November,2016,22:44:50:23304
    VCDS -- Windows Based VAG/VAS Emulator Running on Windows 8.1 x64
    VCDS Version: 16.8.1.3 (x64)
    Data version: 20160902 DS256
    www.Ross-Tech.com
    
    Workshop Code: 123 54563 006500
    
    VIN: TMBEH61Z8B2079021   License Plate: STH
    Mileage: 92850km-57694mi   Repair Order: 
    
    
    
    --------------------------------------------------------------------------------
    --------------------------------------------------------------------------------
    
    
    Chassis Type: 1Z (7N0)
    Scan: 01 02 03 08 09 10 15 16 17 19 25 2E 37 42 44 46 47 52 55 56
              62 72 77
    
    VIN: TMBEH61Z8B2079021   Mileage: 92850km-57694miles
    
    01-Engine -- Status: OK 0000
    02-Auto Trans -- 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
    15-Airbags -- Status: OK 0000
    16-Steering wheel -- Status: OK 0000
    17-Instruments -- Status: OK 0000
    19-CAN Gateway -- Status: OK 0000
    25-Immobilizer -- Status: OK 0000
    2E-Media Player 3 -- Status: OK 0000
    37-Navigation -- Status: OK 0000
    42-Door Elect, Driver -- Status: OK 0000
    44-Steering Assist -- Status: OK 0000
    46-Central Conv. -- Status: OK 0000
    47-Sound System -- Status: OK 0000
    52-Door Elect, Pass. -- Status: Malfunction 0010
    55-Headlight Range -- Status: OK 0000
    56-Radio -- Status: OK 0000
    62-Door, Rear Left -- Status: OK 0000
    72-Door, Rear Right -- Status: OK 0000
    77-Telephone -- Status: OK 0000
     
    -------------------------------------------------------------------------------
    Address 01: Engine (CEG)       Labels: 03L-906-022-CBA.clb
       Part No SW: 03L 906 022 RE    HW: 03L 906 022 GA
       Component: R4 2,0L EDC G000AG  5752  
       Revision: 13H13---    Serial number:               
       Coding: 0000078
       Shop #: WSC 73430 790 00999
       VCID: 79F3CED730825A8AE9-802C
    
    No fault code found.
    Readiness: 0 0 0 0 0 
    
    -------------------------------------------------------------------------------
    Address 02: Auto Trans        Labels: 02E-927-770.clb
       Part No SW: 02E 300 054 H    HW: 02E 927 770 AL
       Component: GSG DSG AG6     511 2601  
       Revision: 05351112    Serial number: 00001010301040
       Coding: 0000020
       Shop #: WSC 73430 790 00999
       VCID: 1B3FF45FDAFEC89A5B-804E
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 03: ABS Brakes (J104)       Labels: 1K0-907-379-60EC1F.clb
       Part No SW: 1K0 907 379 BE    HW: 1K0 907 379 BE
       Component: ESP MK60EC1   H31 0108  
       Revision: 00H31001    
       Coding: 143B601C09290003280B06E6901A0042350800
       Shop #: WSC 73430 790 00083
       VCID: 76E9C5EBC19C35F284-8022
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 08: Auto HVAC (J255)       Labels: 5K0-907-044.clb
       Part No SW: 3T0 907 044 BE    HW: 3T0 907 044 BE
       Component: Climatronic   H16 0402  
       Revision: 00005001    
       Coding: 0000000002
       Shop #: WSC 73430 790 00083
       ASAM Dataset: EV_Climatronic A01010
       ROD: EV_ClimaAutoBasis_SK12.rod
       VCID: 76E9C5EBC99C35F284-8022
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 09: Cent. Elect. (J519)       Labels: 1K0-937-08x-09.clb
       Part No SW: 1K0 937 087 J    HW: 1K0 937 087 J
       Component: BCM PQ35  H   103 0615  
       Revision: 00103 AD    
       Coding: 40000ABAE85BF1C040080080510091E4477800AE737D8560808C40040040
       Shop #: WSC 54563 123 06500
       VCID: 38750BD38B08838256-806C
    
       Subsystem 1 - Part No: 1Z1 955 119 D  Labels: 1KX-955-119.CLB
       Component: Wischer 14111  26  0601 
       Coding: 00D7B7
    
       Subsystem 2 - Part No: 1K0 955 559 AH  Labels: 1K0-955-559-AG.CLB
       Component: RLS 231110 05  54  0403 
       Coding: 0750ED
    
       Subsystem 3 - Part No: 1Z0 951 171 A
       Component: Innenraumuebe  009 5103 
    
       Subsystem 4 - Part No: 1K8 951 605 A
       Component: LIN BACKUP HO  H11 9004 
    
    6 Faults Found:
    01493 - Bulb for Blinkers; Front Left (M5) 
                012 - Electrical Fault in Circuit
                 Freeze Frame:
                        Fault Status: 01101100
                        Fault Priority: 2
                        Fault Frequency: 1
                        Reset counter: 13
                        Mileage: 92854 km
                        Time Indication: 0
                        Date: 2011.04.03
                        Time: 22:36:45
    
                 Freeze Frame:
                            Term 15 On
                        Voltage: 11.90 V
                            ON
                            ON
                            Term 50 Off
                            OFF
                            OFF
    
    01497 - Bulb for Blinkers; Front Right (M7) 
                012 - Electrical Fault in Circuit
                 Freeze Frame:
                        Fault Status: 01101100
                        Fault Priority: 2
                        Fault Frequency: 1
                        Reset counter: 13
                        Mileage: 92854 km
                        Time Indication: 0
                        Date: 2011.04.03
                        Time: 22:36:45
    
                 Freeze Frame:
                            Term 15 On
                        Voltage: 11.90 V
                            ON
                            ON
                            Term 50 Off
                            OFF
                            OFF
    
    01501 - Bulb for Blinkers; Rear Left (M6) 
                012 - Electrical Fault in Circuit
                 Freeze Frame:
                        Fault Status: 01101100
                        Fault Priority: 2
                        Fault Frequency: 1
                        Reset counter: 13
                        Mileage: 92854 km
                        Time Indication: 0
                        Date: 2011.04.03
                        Time: 22:36:45
    
                 Freeze Frame:
                            Term 15 On
                        Voltage: 11.90 V
                            ON
                            ON
                            Term 50 Off
                            OFF
                            OFF
    
    01505 - Bulb for Blinkers; Rear Right (M8) 
                012 - Electrical Fault in Circuit
                 Freeze Frame:
                        Fault Status: 01101100
                        Fault Priority: 2
                        Fault Frequency: 1
                        Reset counter: 13
                        Mileage: 92854 km
                        Time Indication: 0
                        Date: 2011.04.03
                        Time: 22:36:45
    
                 Freeze Frame:
                            Term 15 On
                        Voltage: 11.90 V
                            ON
                            ON
                            Term 50 Off
                            OFF
                            OFF
    
    00987 - Lamp for Brake Light; Left (M9) 
                007 - Short to Ground - Intermittent
                 Freeze Frame:
                        Fault Status: 00100111
                        Fault Priority: 1
                        Fault Frequency: 2
                        Reset counter: 53
                        Mileage: 92854 km
                        Time Indication: 0
                        Date: 2011.04.03
                        Time: 22:40:11
    
                 Freeze Frame:
                            Term 15 On
                        Voltage: 14.10 V
                            ON
                            ON
                            Term 50 Off
                            OFF
                            ON
    
    00988 - Lamp for Brake Light; Right (M10) 
                007 - Short to Ground - Intermittent
                 Freeze Frame:
                        Fault Status: 00100111
                        Fault Priority: 1
                        Fault Frequency: 2
                        Reset counter: 53
                        Mileage: 92854 km
                        Time Indication: 0
                        Date: 2011.04.03
                        Time: 22:40:11
    
                 Freeze Frame:
                            Term 15 On
                        Voltage: 14.10 V
                            ON
                            ON
                            Term 50 Off
                            OFF
                            ON
    
    
    -------------------------------------------------------------------------------
    Address 10: Park/Steer Assist (J446)       Labels: 1Z0-919-475-V2.clb
       Part No SW: 1Z0 919 475 E    HW: 7N0 919 475 
       Component: PARKHILFE 8K  H06 0005  
       Revision: --H06---    Serial number: 28291030900180
       Coding: 108102
       Shop #: WSC 13765 790 00083
       ASAM Dataset: EV_EPHVA18SKxxx0000 001001
       ROD: EV_EPHVA18SKxxx0000.rod
       VCID: 438F6C3FCACED05AF3-8016
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 15: Airbags        Labels: 1K0-909-605.lbl
       Part No SW: 1K0 909 605 T    HW: 1K0 909 605 T
       Component: Q6 AIRBAG VW8   020 2300  
       Revision: 05020000    Serial number: 0038PC22N0B0  
       Coding: 0020790
       Shop #: WSC 73430 790 00083
       VCID: 3D7B1AC7642AA6AA85-8068
    
       Subsystem 1 - Serial number: 6332MSME5922471EF
    
       Subsystem 2 - Serial number: 6342MSME5946093AI
    
       Subsystem 3 - Serial number: 6351HSME2501111EZ
    
       Subsystem 4 - Serial number: 6361HSME2501051D 
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 16: Steering wheel (J527)       Labels: 5K0-953-569.clb
       Part No SW: 5K0 953 521 AT    HW: 5K0 953 569 B
       Component: LENKS.MODUL   009 0136  
       Revision: FF010039    Serial number: 20101124300782
       Coding: 189A140000
       Shop #: WSC 73430 790 00083
       ASAM Dataset: EV_SMLSNGVOLWS A01004
       ROD: EV_SMLSNGVOLWSXS.rod
       VCID: 7EF9DDCBE1AC7DB2DC-802A
    
       Multifunction steering wheel control module: 
       Subsystem 1 - Part No SW: 3T0 959 537 A    HW: 3T0 959 537 A  Labels: 3C8-959-537.CLB
       Component: E221__MFL-URO  H07 0012 
       Coding: 830000
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 17: Instruments (J285)       Labels: 5K0-920-xxx-17.clb
       Part No SW: 1Z0 920 843 N    HW: 1Z0 920 843 N
       Component: KOMBI         H20 0420  
       Serial number: 00000000000000
       Coding: 110D01
       Shop #: WSC 54563 123 06500
       ASAM Dataset: EV_Kombi_UDS_VDD_RM09 A04089
       ROD: EV_Kombi_UDS_VDD_RM09_VW25.rod
       VCID: 438F6C3FCACED05AF3-8016
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 19: CAN Gateway (J533)       Labels: 7N0-907-530-V2.clb
       Part No SW: 7N0 907 530 C    HW: 1K0 907 951 
       Component: J533  Gateway H37 0614  
       Revision:   H37       Serial number: 211110F1002251
       Coding: 351302
       Shop #: WSC 73430 790 00083
       VCID: 306533F363785BC21E-8064
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 25: Immobilizer (J334)       Labels: 5K0-920-xxx-25.clb
       Part No SW: 5K0 953 234     HW: 5K0 953 234 
       Component: IMMO          H20 0420  
       Serial number: 00000000000000
       Coding: 000000
       Shop #: WSC 00000 000 00000
       ASAM Dataset: EV_Immo_UDS_VDD_RM09 A03008
       ROD: EV_Immo_UDS_VDD_RM09_VW21.rod
       VCID: 6AD1E19B8D24E11210-803E
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 2E: Media Player 3 (J650)       Labels: 5N0-035-342.lbl
       Part No SW: 5N0 035 342 C    HW: 5N0 035 342 C
       Component: SG EXT.PLAYER H13 0111  
       Revision: A1001003    Serial number: 7668900875    
       Coding: 010000
       Shop #: WSC 73430 790 00999
       VCID: 2757D8AF56B61C7ACF-8072
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 37: Navigation (J0506)       Labels: 1T0-035-680.clb
       Part No SW: 3T0 035 680 G    HW: 3T0 035 680 A
       Component: RNS-MID       H42 5238  
       Revision: AB001001    Serial number: SKZ6Z7K4331152
       Coding: 00060002000000A10000
       Shop #: WSC 54563 123 06500
       VCID: 346D3FE3976067E27A-8060
    
       Subsystem 1 - Part No: 3T0 051 859 AM
       Component: EU East V13  8350 
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 42: Door Elect, Driver        Labels: 1K0-959-701-MAX3.lbl
       Part No SW: 1T0 959 701 AA    HW: 1T0 959 701 AA
       Component: Tuer-SG         009 2119  
       Coding: 0004350
       Shop #: WSC 54563 123 06500
       VCID: 76E9C5EB019C35F284-8022
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 44: Steering Assist        Labels: 1Kx-909-14x-44.clb
       Part No: 1K0 909 144 J
       Component: EPS_ZFLS Kl. 74     3001  
       Revision: 00H17000    
       Shop #: WSC 73430 790 00083
       VCID: 316336F7A87252CA11-8064
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 47: Sound System (R12)       Labels: 5K0-035-456.clb
       Part No SW: 3T0 035 456     HW: 3T0 035 456 
       Component: KonzernAmp10K H06 0342  
       Revision: --------    Serial number: BP218209152882
       ASAM Dataset: EV_AudioVerst10KanalBNO2 A01003
       ROD: EV_AudioVerst10KanalBNO2.rod
       VCID: 6ED9ED8BB1CC0D324C-803A
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 52: Door Elect, Pass.        Labels: 1K0-959-702-MAX3.lbl
       Part No SW: 1T0 959 702 S    HW: 1T0 959 702 S
       Component: Tuer-SG         009 2119  
       Coding: 0004342
       Shop #: WSC 73430 790 00083
       VCID: 48957B133BE8F30226-801C
    
    1 Fault Found:
    00121 - Outside Warning Light/Door exit Light Passenger Side 
                012 - Electrical Fault in Circuit - Intermittent
    
    -------------------------------------------------------------------------------
    Address 55: Headlight Range        Labels: 5M0-907-357-V2.lbl
       Part No SW: 5M0 907 357 C    HW: 5M0 907 357 C
       Component: AFS-Steuergeraet    0148  
       Revision: 00H04000    Serial number:               
       Coding: 1507354
       Shop #: WSC 73430 790 00083
       VCID: 346D3FE3576067E27A-8060
    
       Subsystem 1 - Part No: 7L6 941 329 B  Labels: 3D0-941-329.CLB
       Component: AFS-Lst.-Modul l    0004  
       Coding: 00000023
    
       Subsystem 2 - Part No: 7L6 941 329 B  Labels: 3D0-941-329.CLB
       Component: AFS-Lst.-Modul r    0004  
       Coding: 00000023
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 56: Radio (J0506)       Labels: 1T0-035-680.clb
       Part No SW: 3T0 035 680 G    HW: 3T0 035 680 A
       Component: RNS-MID       H42 5238  
       Revision: AB001001    Serial number: SKZ6Z7K4331152
       Coding: 00060002000000A10000
       Shop #: WSC 54563 123 06500
       VCID: 346D3FE3976067E27A-8060
    
       Subsystem 1 - Part No: 3T0 051 859 AM
       Component: EU East V13  8350 
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 62: Door, Rear Left        Labels: 1K0-959-703-GEN3.lbl
       Part No SW: 5K0 959 703 A    HW: 5K0 959 703 A
       Component: Tuer-SG         007 2101  
       Coding: 0000144
       Shop #: WSC 73430 790 1012563
       VCID: 326139FBAD7469D268-8066
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 72: Door, Rear Right        Labels: 1K0-959-704-GEN3.lbl
       Part No SW: 5K0 959 704 A    HW: 5K0 959 704 A
       Component: Tuer-SG         007 2101  
       Coding: 0000144
       Shop #: WSC 73430 790 1012563
       VCID: 336F3CFF526E60DA63-8066
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 77: Telephone (J412)       Labels: 3C8-035-730-A.clb
       Part No SW: 5N0 035 730 D    HW: 5N0 035 730 D
       Component: Telefon       009 0511  
       Revision: --------    Serial number: 35909603070689
       Coding: 020100000100010000000000
       Shop #: WSC 54563 123 06500
       ASAM Dataset: EV_UHVPremi A01005
       ROD: EV_UHVPremi_VW32.rod
       VCID: 2953DE9748A22A0AD9-807C
    
    No fault code found.
    
    End-------------------------(Elapsed Time: 03:21)--------------------------

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  6. #4
    Verified VCDS User Keithuk's Avatar
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    This is a common problem when fitting LED bulbs. You normally have to fit a resistor in the circuit so the bulb out warning doesn't show. You can Google this problem.
    New User Keith

    2010 Golf GTD (170) CBBB, 5 Door, Shadow Blue (P6/D5Q), Flat Tyre Indicator, Basic Protection Pack + VCDS.

  7. #5
    Verified VCDS User PetrolDave's Avatar
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    There's a suggestion on post #7 of this thread http://www.briskoda.net/forums/topic...ash-mot-issue/ on briskoda.net that the ability to code out LED bulb errors wasn't added to the Octavia 2 until 2012MY.

    If that's true then as you say you have a 2011 model you'll have to add resistors in parallel with the LED bulbs to get rid of the errors.
    Last edited by PetrolDave; 11-11-2016 at 10:23 AM.

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  9. #6
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    I've got LEDs in my 2011 Octavia vRS and they don't throw any faults.
    Its a matter of finding some that are 'canbus friendly' unless you add the resistors inline in the circuit.
    2011 Skoda Octavia vRS TDI DSG wagon|Revo Stage 1|Race Blue|Leather|Dynamic Xenons w 6000K|THA475 Amp+active sub|Whiteline ALK|RVC|Discover Media
    2009 R36 wagon|Biscay Blue|RVC|Tailgate|ECU and DSG tune|LED DRL/Indicators|Full colour MFD|Quad LED tail rings| Climatronics upgrade| Dynaudio retrofit | B7 RLine Flat Steering Wheel|3AA CCM|B7 Adaptive Cruise with Front Assist|TPMS Direct|Discover Media retrofit|PLA 2.0|Lane Assist|BCM Retrofit|HBA/FLA

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  11. #7
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    I am aware of the resistor "solution" I've done that to a few cars before, but I was hoping to avoid that. Since nobody knows how to disable this GD monitoring, I guess that's where I'm heading.
    Thanks for the suggestion to try out different LEDs, I would do that if I could afford to spend 50$/pair on LEDs to find one that works. Maybe you can point me to some that you know works for sure.

  12. #8
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    I just used these ones, in yellow for indicators:

    https://www.aliexpress.com/item/Ford...608.0.0.QOadPi

    They have been in the car now for about 2.5 years.
    I don't think the red ones work as well for brake lights as I've had some of them fail. But indicators are going strong.
    2011 Skoda Octavia vRS TDI DSG wagon|Revo Stage 1|Race Blue|Leather|Dynamic Xenons w 6000K|THA475 Amp+active sub|Whiteline ALK|RVC|Discover Media
    2009 R36 wagon|Biscay Blue|RVC|Tailgate|ECU and DSG tune|LED DRL/Indicators|Full colour MFD|Quad LED tail rings| Climatronics upgrade| Dynaudio retrofit | B7 RLine Flat Steering Wheel|3AA CCM|B7 Adaptive Cruise with Front Assist|TPMS Direct|Discover Media retrofit|PLA 2.0|Lane Assist|BCM Retrofit|HBA/FLA

  13. #9
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    I coded out the bulb warnings (indicators, tails, reverse, sidelights, fogs) on a MY12 Octavia using information from skodapilot.

    If you have access to the right tools it might be possible, although I think your BCM might be too old to support LED lighting.
    - 1K0 937 087 K (HW:103 SW:0615) didn't support LED lighting on a Skoda Superb (I tried this for someone)
    - 1K0 937 087 P (HW:104 SW:0615) apparently did support LED lighting on a Skoda Superb (report from another person so unverified)
    - 1K0 937 087 Q/R (HW:110 SW:651) both support LED lighting (my car)

    I did try flashing the K rev to a P rev and it made no difference. As you have a J rev with HW:103 I think you may need to use resistors I'm afraid.

  14. #10
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    For anyone visiting this thread looking for an answer regarding retrofitting LEDs, here's what you need to know if you have a car equipped with the BCMPQ35 module (as with the original post).


    The BCM...

    If you're wanting to fit retrofit LED bulbs rather than the dedicated clusters available from the likes of Hella it doesn't matter if you have an LED-ready BCM revision or not.

    ANY BCM will work with LED bulbs (ignoring bulb-monitoring issues for a moment).

    LED-ready BCMs are for those cars where factory LED options are available (later Golf 6, Scirocco etc.).

    An LED-ready BCMPQ35 is not designed to support LED bulbs fitted in traditional filament bulb housings.


    Bulb Monitoring

    For clarity, bulb monitoring and diagnostics are performed by the BCM. This is not a function of CAN which is a networking communication standard using a bus topology. "CANBUS friendly" is utterly meaningless marketing blurb while "error-free" accurately describes a bulb design. More on this in a moment.

    There are three ways of dealing with existing bulb diagnostics when retrofitting LED bulbs.

    The software route involves coding the BCM so diagnostics are either disabled or adjusted to take into account LED operating characteristics. This involves software other than VCDS. Those wanting a "clean" solution without physical modifications will want to try this.

    The hardware route involves the addition of a high-wattage wire wound resistor in parallel with every retrofitted LED. This could become a wiring mess if the intention is to replace every bulb, and these resistors get HOT. I routinely solder with a 25W iron, a resistor correctly specced for a 21W bulb ideally needs to rated for double this in continuous applications and the nearest common value is 50W. Every bulb you fit will require a wire wound resistor and these will require careful placement to avoid melting nearby plastic components. This is a good solution for those with some DIY and soldering experience but without access to potentially expensive diagnostic software. Referring back to CAN bus, some resistors are sold as "CANBUS cancellers" and "CANBUS decoders". Again, this is meaningless marketing rubbish, they don't "cancel" CAN bus or "decode" it in any way, they merely provide a load to the lighting circuit similar to that of a filament bulb.

    Finally, the mindware route involves ignoring the bulb warning and accompanying MFD error messages. This requires no software or DIY skills.


    A full LED retrofit without errors or resistors is possible with the BCMPQ35 purely through coding, I know because I've done it. One interesting thing about this module and LED retrofits is many people still think resistors are required to maintain a correct flash rate. This was true with old designs of flasher circuit that relied on the bulb resistance for the correct flash rate, but it's not true with this module. Without coding or resistors you will see hyper-flashing on the dashboard but the lights will be operating externally at the correct rate. This seems to be a deliberately engineered feature to remind you there is an issue with the indicators because with bulb diagnostics disabled there is no hyper-flashing internally either.

    One other thing I found in my experiments was at one point my BCM would appear to accept coding changes (DRL Dimming Factor was one) but the change wouldn't take while the BCM was showing error codes. The coding was reporting correctly (LED fogs running at 10%) but there was no output and changing this value didn't make a difference. Returning bulbs to standard and clearing DTCs resolved this issue, and since disabling bulb diagnostics there have been no further quirks of fitting LEDs as replacements to the factory originals.

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