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Thread: How to automatically turn on Fog lights when the headlights turn on (Audi B8/8T)

  1. #1
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    How to automatically turn on Fog lights when the headlights turn on (Audi B8/8T)

    I don't need fog lights (it's foggy like 1 day a year) so I installed low brightness LED fog lights so they act as Daytime running lights, they are the same brightness as the stock DRL's.

    The fog lights already come on when the DRL LED light strip comes on by enabling Bit 3 in Byte 2.

    [09 – Cent. Elect.] [Coding - 07] -> Long Coding Helper -> Byte 2
    Bit 1 = DRL via Front Side markers
    Bit 2 = DRL via High Beams
    Bit 3 = DRL via Fogs
    Bit 4 = DRL via LEDs
    Bit 6 = DRL via Side markers
    Bit 7 = DRL via Tail lights


    But the problem is the fog lights turn OFF when the light sensing headlights come on at night or when overcast. I need to press the fog button to turn them back on.

    How do I make the Fog lights automatically come on when the Low-beam Headlights come on in VCDS?

    I tried looking for this Land Selection option so I could set it to Canada mode, but I cant find it in my car.
    http://www.audiworld.com/forums/a8-s...ights-2854619/ (Audi A8 2003-2009)

    The Car is an Audi A5 (8T) Coupe 2011. Should be the same as the A4 (B8).

    Code:
    Saturday,18,July,2015,23:27:08:58148
    VCDS -- Windows Based VAG/VAS Emulator
    VCDS Version: 14.10.2.0 (x64)
    Data version: 20150311
    www.Ross-Tech.com
    
    
    VIN: WAUZZZ8TXBA0xxxxx   License Plate: xxxxxx
    Mileage: 67330km-41836mi   Repair Order: 
    
    
    
    --------------------------------------------------------------------------------
    --------------------------------------------------------------------------------
    
    
    Chassis Type: 8T (8T0)
    Scan: 01 02 03 05 06 08 09 10 15 16 17 19 36 42 46 52 53 55 56 5F
             
    
    VIN: WAUZZZ8TXBA0xxxxx   Mileage: 67330km-41836miles
    
    01-Engine -- Status: OK 0000
    02-Auto Trans -- Status: OK 0000
    03-ABS Brakes -- Status: OK 0000
    04-Steering Angle -- Status: OK 0000
    05-Acc/Start Auth. -- Status: OK 0000
    06-Seat Mem. Pass -- 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
    36-Seat Mem. Drvr -- Status: OK 0000
    42-Door Elect, Driver -- Status: OK 0000
    46-Central Conv. -- Status: Malfunction 0010
    52-Door Elect, Pass. -- Status: OK 0000
    53-Parking Brake -- Status: OK 0000
    55-Headlight Range -- Status: OK 0000
    56-Radio -- Status: Malfunction 0010
    5F-Information Electr. -- Status: Malfunction 0010
     
    -------------------------------------------------------------------------------
    Address 01: Engine (CL0MA-CDNC)       Labels: 06H-907-115-CAB.clb
       Part No SW: 8K2 907 115 P    HW: 8K2 907 115 D
       Component: 2.0l R4/4V TF H19 0009  
       Revision: E1H19---    
       Coding: 0114000C240F0160
       Shop #: WSC 06325 000 00000
       ASAM Dataset: EV_ECM20TFS8K2907115P A01011
       ROD: EV_ECM20TFS0118K2907115AJ.rod
       VCID: 3C777E5CB78883C1727-8069
    
    No fault code found.
    Readiness: 0000 0000
    
    -------------------------------------------------------------------------------
    Address 02: Auto Trans (J217)       Labels: 0B5-927-156.clb
       Part No SW: 8K1 927 156 G    HW: 0B5 927 156 F
       Component: 0B5 20TFSIRdW H05 0008  
       Revision: --H05---    Serial number: 0000000151
       Coding: 000001
       Shop #: WSC 06325 000 00000
       ASAM Dataset: EV_TCMDL501 A02087
       ROD: EV_TCMDL501.rod
       VCID: 39796748B8BAB6E9691-806C
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 03: ABS Brakes (J104)       Labels: 8K0-907-379.clb
       Part No SW: 8K0 907 379 BG    HW: 8K0 907 379 BG
       Component: ESP8 quattro  H04 0020  
       Revision: --------    Serial number: --------------
       Coding: 090500
       Shop #: WSC 06325 000 00000
       VCID: 7F0D4950EE1E58D9175-802A
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 05: Acc/Start Auth. (J393)       Labels: 8K0-907-064-05.clb
       Part No SW: 8K0 907 064 CT    HW: 8K0 907 064 CT
       Component: BCM2 2.0      H05 0435  
       Revision: 00002001    
       Coding: 051000
       Shop #: WSC 06325 000 00000
       VCID: 0407C6BC87F83B014A7-8051
    
       Subsystem 1 - Part No SW: 8K0 905 852 D    HW: 8K0 905 852 D
       Component: J764 ELV MLB  H37 0042 
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 06: Seat Mem. Pass (J521)       Labels: 8T0-959-760.clb
       Part No SW: 8T0 959 760 C    HW: 8T0 959 760 C
       Component: MEM-BFS       H10 0074  
       Revision: AA000000    Serial number: 00001002301555
       Coding: 08217025002400001000
       Shop #: WSC 06325 000 00000
       VCID: 438505A0C276FC3933D-8016
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 08: Auto HVAC (J255)       Labels: Redir Fail!
       Part No SW: 8T2 820 043 AF    HW: 8T2 820 043 AF
       Component: KLIMA 3 ZONEN H08 0180  
       Revision: D0000000    Serial number: 01040220110280
       Coding: 64166000
       Shop #: WSC 06325 000 00000
       VCID: 76E3AC74C1241991443-8023
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 09: Cent. Elect. (J519)       Labels: 8K0-907-063.clb
       Part No SW: 8K0 907 063 N    HW: 8K0 907 063 N
       Component: BCM1 1.0      H30 0392  
       Revision: 09030001    Serial number: 00000000787767
       Coding: 260058114034AF211609000000005D5D0F9D438802010141000000
       Shop #: WSC 06325 123 12345
       VCID: 3A7B7844B5BCBDF160B-806F
    
       Subsystem 1 - Part No SW: 8T2 955 119 D    HW: 8J2 955 119   Labels: 1KX-955-119.CLB
       Component: WWS 210111  H12 0070 
       Coding: 00FD11
    
       Subsystem 2 - Part No SW: 8K0 955 559     HW: 8K0 955 559   Labels: 8K0-955-559.CLB
       Component: RLS  H04 0003 
       Coding: 02532C
    
       Subsystem 3 - Part No SW: 8K0 941 531 AS    HW: 8K0 941 531 AS
       Component: E1 - LDS  H03 0031 
    
    2 Faults Found:
    01496 - Bulb for Fog-Lamps; Left (L22) 
                012 - Electrical Fault in Circuit - Intermittent
                 Freeze Frame:
                        Fault Status: 00101100
                        Fault Priority: 2
                        Fault Frequency: 1
                        Reset counter: 146
                        Mileage: 67278 km
                        Time Indication: 0
                        Date: 2015.07.17
                        Time: 19:05:00
    
    03207 - Charisma Switch Module 
                004 - No Signal/Communication
                 Freeze Frame:
                        Fault Status: 01100100
                        Fault Priority: 3
                        Fault Frequency: 1
                        Reset counter: 106
                        Mileage: 67278 km
                        Time Indication: 0
                        Date: 2015.07.17
                        Time: 19:12:00
    
    
    -------------------------------------------------------------------------------
    Address 10: Park/Steer Assist (J446)       Labels: 8K0-919-475.clb
       Part No SW: 8K0 919 475 T    HW: 8P0 919 475 M
       Component: PARKHILFE 4K  H01 0080  
       Revision: 11001001    Serial number: 36891104017555
       Coding: 000101
       Shop #: WSC 06325 000 00000
       VCID: 4A9B2884E55C2D71F0B-801F
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 15: Airbags (J234)       Labels: 8K0-959-655.clb
       Part No SW: 8K0 959 655 L    HW: 8K0 959 655 L
       Component: AirbagVW-AU10 H44 0610  
       Serial number: 003JMD092HPO  
       Coding: 30533433363030303030554A305238543053
       Shop #: WSC 06325 000 00000
       ASAM Dataset: EV_AirbaECUVWAUDI010 003010
       ROD: EV_AirbaECUVWAUDI010_AU48.rod
       VCID: 46831CB4F944C911143-8013
    
       Crash sensor for side airbag; driver side: 
       Serial number: 6334MSME590512241
    
       Crash sensor for side airbag; front passenger side: 
       Serial number: 6344MSME5C250B43G
    
       Crash sensor for side airbag; rear; driver side: 
       Serial number: 6352QSME27080A68I
    
       Crash sensor for side airbag; rear; passenger side: 
       Serial number: 6362QSME470143546
    
       Crash sensor for front airbag; driver side: 
       Serial number: 63732SME5B043042S
    
       Crash sensor for front airbag; front passenger side: 
       Serial number: 63832SME5B041666$
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 16: Steering wheel (J527)       Labels: 8K0-953-568.clb
       Part No SW: 8R0 953 568 K    HW: 8R0 953 568 K
       Component: Lenks.Modul   H07 0156  
       Revision: 00000000    Serial number: 20110204000998
       Coding: 000036
       Shop #: WSC 06325 000 00000
       VCID: 49991788E05A2669F91-801C
    
       Component: E221 - MFL  H02 0010 
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 17: Instruments (J285)       Labels: 8T0-920-xxx-17.clb
       Part No SW: 8T0 920 931 L    HW: 8T0 920 931 L
       Component: KOMBIINSTR.   H40 0258  
       Revision: 00200000    Serial number: EHT23322C     
       Coding: AF07010002000008010000
       Shop #: WSC 06325 000 00000
       VCID: 408F0AACD360E7212EF-8015
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 19: CAN Gateway (J533)       Labels: 8T0-907-468.clb
       Part No SW: 8T0 907 468 AD    HW: 8T0 907 468 K
       Component: GW-BEM 4CAN-M H09 0117  
       Revision: EC000056    Serial number: 5600E111200180
       Coding: 00C303
       Shop #: WSC 06325 000 00000
       VCID: 0305C5A082F63C3973D-8056
    
       Subsystem 1 - Part No SW: 8K0 915 181 E    HW: 8K0 915 181 E
       Component: J367-BDM  H07 0170 
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 36: Seat Mem. Drvr (J136)       Labels: 8T0-959-760.clb
       Part No SW: 8T0 959 760 C    HW: 8T0 959 760 C
       Component: MEM-FS        H10 0074  
       Revision: AA000000    Serial number: 00001002302018
       Coding: 08217025002400001000
       Shop #: WSC 06325 000 00000
       VCID: 438505A0C276FC3933D-8016
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 42: Door Elect, Driver (J386)       Labels: 8K0-959-793.clb
       Part No SW: 8T0 959 793 M    HW: 8T0 959 793 D
       Component: TSG FA        H08 1501  
       Revision: --------    Serial number: --------------
       Coding: 011C12224101120102
       Shop #: WSC 06325 000 00000
       VCID: 53A535E032166CB983D-8006
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 46: Central Conv. (J393)       Labels: 8K0-907-064-46.clb
       Part No SW: 8K0 907 064 CT    HW: 8K0 907 064 CT
       Component: BCM2 2.0      H05 0435  
       Revision: 00002001    Serial number: 0140762215    
       Coding: 01000E8000B904018030003280000000
       Shop #: WSC 06325 000 00000
       VCID: 0407C6BC87F83B014A7-8051
    
    1 Fault Found:
    01504 - Bulb for License-Plate Light (X) 
                012 - Electrical Fault in Circuit - Intermittent
                 Freeze Frame:
                        Fault Status: 00101100
                        Fault Priority: 2
                        Fault Frequency: 4
                        Reset counter: 142
                        Mileage: 67182 km
                        Time Indication: 0
                        Date: 2015.07.16
                        Time: 12:19:40
    
    
    -------------------------------------------------------------------------------
    Address 52: Door Elect, Pass. (J387)       Labels: 8K0-959-792.clb
       Part No SW: 8T0 959 792 M    HW: 8T0 959 792 D
       Component: TSG BF        H08 1501  
       Revision: --------    Serial number: --------------
       Coding: 011C12224101120102
       Shop #: WSC 06325 000 00000
       VCID: 52AB30E40D0C65B188B-8007
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 53: Parking Brake (J540)       Labels: 8K0-907-801-V1.clb
       Part No SW: 8K0 907 801 H    HW: 8K0 907 801 H
       Component: EPB Audi B8   H09 0100  
       Revision: 00000003    Serial number: 00000000856537
       Shop #: WSC 00000 000 00000
       VCID: 3467567C97D84B81BA7-8061
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 55: Headlight Range        Labels: 8K0-907-357.clb
       Part No: 8K5 907 357 B
       Component: Dynamische LWR  H02 0010  
       Revision: 00000001    Serial number:               
       Coding: 0000002
       Shop #: WSC 06325 000 00000
       VCID: 3979674870BAB6E9691-806C
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 56: Radio (R)       Labels: Redir Fail!
       Part No SW: 4G0 035 056     HW: 4G0 035 056 
       Component: Radio U STD   H52 0051  
       Revision: AB001007    Serial number: 469B+0B7667602
       Coding: 040003020100000001
       Shop #: WSC 06325 000 00000
       VCID: 5EB3D4D449D4B1D13C3-800B
    
    1 Fault Found:
    03029 - Subwoofer (R157) 
                011 - Open Circuit - Intermittent
                 Freeze Frame:
                        Fault Status: 00101011
                        Fault Priority: 5
                        Fault Frequency: 3
                        Reset counter: 124
                        Time Indication: 0
    
                 Freeze Frame:
                        Voltage: 12.20 V
    
    
    -------------------------------------------------------------------------------
    Address 5F: Information Electr. (J794)       Labels: None
       Part No SW: 8T2 035 754 G    HW: 8T2 035 754 D
       Component: H-BN-RW       H51 0146  
       Revision: --------    Serial number: 485B00B7528088
       Coding: 010A0102000681ED45000B0E000000030000
       Shop #: WSC 06325 000 00000
       VCID: 3D717358A4928AC9459-8068
    
       Subsystem 1 - Part No: 8R0 060 884 Q
       Component: ROW 2010  0207 
    
       Subsystem 2 - Part No SW: 8F0 919 604     HW: 8F0 919 604 
       Component: DU7 High  H43 0084 
    
       Subsystem 3 - Part No SW: 8T0 919 609 G    HW: 8T0 919 609 G
       Component: E0380 Bedient  H08 0100 
    
       Subsystem 4 - Part No: 8R0 060 961 A
       Component: CD-Database  2712 
    
    1 Fault Found:
    03276 - Please Check Software Version Management 
                000 -  - 
                 Freeze Frame:
                        Fault Status: 01100000
                        Fault Priority: 6
                        Fault Frequency: 1
                        Reset counter: 40
                        Mileage: 65327 km
                        Time Indication: 0
                        Date: 2015.06.12
                        Time: 12:17:56
    
                 Freeze Frame:
                        Voltage: 14.70 V
    
    
    End-------------------------(Elapsed Time: 02:39)--------------------------

  2. #2
    Verified VCDS User rlarsen's Avatar
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    Front Fog Lights stay on with High-beams
    Code:
    [09 – Cent. Elect.]
    [Coding - 07] -> [Long Coding Helper] -> Byte 4
    Bit 1 - Change 1 to 0
    Rear Fog Lights stay on with High-beams
    Code:
    [09 – Cent. Elect.]
    [Coding - 07] -> [Long Coding Helper] -> Byte 4
    Bit 2 - Change 1 to 0
    Rene Larsen

    Audi A4 Avant 3.0 TDI quattro tiptronic MY2009 - sold
    VCDS 19.6.2
    (HEX-V2)

  3. #3
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    I seen those codes before but aren't they for high beams only?

    I don't think they affect the low beams (dipped beams).

    Correct me if I'm wrong.

  4. #4
    Verified VCDS User rlarsen's Avatar
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    Quote Originally Posted by A5Tronic View Post
    I seen those codes before but aren't they for high beams only?

    I don't think they affect the low beams (dipped beams).

    Correct me if I'm wrong.
    They are the only coding I can come up with - what happen if you use the coding ??

    The Fogs doesn't turn off when low and/or high beams are on here in Europe - so a coding exist.
    Rene Larsen

    Audi A4 Avant 3.0 TDI quattro tiptronic MY2009 - sold
    VCDS 19.6.2
    (HEX-V2)

  5. #5
    Verified VCDS User Gizmo's Avatar
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    The problem arises when you have any LED DRL lit in the dark, they are so bright they blind oncoming traffic, which is why OE LED DRL’s automatically dim to an acceptable level when the dip beam is turned on.

  6. #6
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    Quote Originally Posted by rlarsen View Post
    They are the only coding I can come up with - what happen if you use the coding ??

    The Fogs doesn't turn off when low and/or high beams are on here in Europe - so a coding exist.
    Have doubts but I'll give it a try anyway.

  7. #7
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    Quote Originally Posted by Gizmo View Post
    The problem arises when you have any LED DRL lit in the dark, they are so bright they blind oncoming traffic, which is why OE LED DRL’s automatically dim to an acceptable level when the dip beam is turned on.
    The brightness of the fogs are the same as the stock DRL's so I'm not worried about dazzling other drivers.
    As rlarsen said the fogs dont turn off in Europe so there must be a way, most likely a Land selection option hidden away somewhere or an unknown byte in 09: Cent. Elect.

  8. #8
    Verified VCDS User Gizmo's Avatar
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    I think riarsen is referring to that fact that the fogs can be coded to stay on once they have been physically turned on,
    I assume your headlight switch is the same as we get in Europe... i.e. you pull the switch out to turn the foglight on.

    If your foglights are the same brightness as your OE DRL’s with the headlights off then surely they will be brighter than the OE DRL’s when you have the headlights on? (as the OE ones will dim down)

  9. #9
    Verified VCDS User rlarsen's Avatar
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    On the North Americas models the fogs switches off when high beams are on - but not with low beams on.

    Here in Europe the fogs doesn't switch off with low- or high beam on.
    Rene Larsen

    Audi A4 Avant 3.0 TDI quattro tiptronic MY2009 - sold
    VCDS 19.6.2
    (HEX-V2)

  10. #10
    Verified VCDS User Gizmo's Avatar
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    Quote Originally Posted by rlarsen View Post
    On the North Americas models the fogs switches off when high beams are on - but not with low beams on.

    Here in Europe the fogs doesn't switch off with low- or high beam on.
    But when you physically turn the lightswitch to off the foglight position of the switch springs back in (to the off position) so when you turn the lights on again you would need to physically pull the switch back out to turn the foglights back on?

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