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Thread: Enable HBA on MLBevo cars

  1. #1
    Verified VCDS User hadez16's Avatar
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    Enable HBA on MLBevo cars

    Hi all,

    this script applies to all new Audi MLBevo cars like Audi A4 B9

    It enables the simple High Beam Assist when absolutely no headlight assist is equipped.

    Code:
    StartVCDS()
    OpenUnit("A5")
    	TestComponent("BVS",1) ;coding does not apply on ultra new zFAS cameras like VW Touareg 3
    	ChangeCoding("21:5","")
    CloseUnit()
    OpenUnit("09")
    	ChangeCoding("5:0,5,6","")
    CloseUnit()
    
    ClearAllDTCs()
    There is an exception for the ultra new zFAS cameras with 85 Byte coding (VW Touareg 3) as this is not possible there with that script.

    Cheers,
    hadez16

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  3. #2
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    Quote Originally Posted by hadez16 View Post
    Hi all,

    this script applies to all new Audi MLBevo cars like Audi A4 B9

    It enables the simple High Beam Assist when absolutely no headlight assist is equipped.

    Code:
    StartVCDS()
    OpenUnit("A5")
    	TestComponent("BVS",1) ;coding does not apply on ultra new zFAS cameras like VW Touareg 3
    	ChangeCoding("21:5","")
    CloseUnit()
    OpenUnit("09")
    	ChangeCoding("5:0,5,6","")
    CloseUnit()
    
    ClearAllDTCs()
    There is an exception for the ultra new zFAS cameras with 85 Byte coding (VW Touareg 3) as this is not possible there with that script.

    Cheers,
    hadez16
    Will this script work on a B9 RS5 that already has HBA, to make the setting stick post re-start?
    Factory equipped vehicles are coded to turn this off at every restart.
    Makes no sense being as the MLB-EVO cars like the A6's are factory coded to remain the same as they were when the vehicle shut down.

  4. #3
    VCDS Distributor AINils's Avatar
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    no this script only activate the HBA

  5. #4
    Verified VCDS User golfi_vend's Avatar
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    That is 09 adaption on mqb cars. I'd check there. It was named something about "reset".
    I am a VW Freak - Le WV Freaks OR Come visit me at my work with ODIS concerns - FORSS ODIS GeKo/FaZit access for VW/AUDI/Škoda
    The world is my oyster...

  6. #5
    Verified VCDS User DV52's Avatar
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    Quote Originally Posted by golfi_vend View Post
    That is 09 adaption on mqb cars. I'd check there. It was named something about "reset".
    correct (for MQB) - see here

    Don
    VW Golf MkVII (MY13) - A3 8V hatch (MY17)

  7. #6
    Verified VCDS User hadez16's Avatar
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    Deactivating the HBA reset on MLBevo cars is not possible via coding. Probably somewhere deep in parameters.
    Audi B9 Facelift has the new behaviour = Reset is deactivated.

  8. #7
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    Quote Originally Posted by hadez16 View Post
    Deactivating the HBA reset on MLBevo cars is not possible via coding. Probably somewhere deep in parameters.
    Audi B9 Facelift has the new behaviour = Reset is deactivated.
    So essentially, the B9 cars are the only cars with the reset.
    B8.5's could do it, A6's on the MLB-EVO can do it, but they took the feature out for 3-4 years on a new model?
    I seriously don't get how Audi thinks sometimes.
    Maybe when the B9.5's come out, we can compare coding at the bit/byte levels?
    It also makes me wonder about if Audi finally decided to use the Ambient lights as part of the welcome home/coming home feature of the B9.5's, like they do on the A6's....

  9. #8
    Verified VCDS User hadez16's Avatar
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    Quote Originally Posted by rs5iswicked View Post
    So essentially, the B9 cars are the only cars with the reset.
    B8.5's could do it, A6's on the MLB-EVO can do it, but they took the feature out for 3-4 years on a new model?
    I seriously don't get how Audi thinks sometimes.
    Maybe when the B9.5's come out, we can compare coding at the bit/byte levels?
    It also makes me wonder about if Audi finally decided to use the Ambient lights as part of the welcome home/coming home feature of the B9.5's, like they do on the A6's....
    B9.5 is out since MY20. As I said, no bit that is changeable regarding HBA reset.

  10. #9
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    Quote Originally Posted by hadez16 View Post
    B9.5 is out since MY20. As I said, no bit that is changeable regarding HBA reset.
    Interesting.
    I was told in enough thread that the HBA was now sticky in the B9.5s....
    Do you know if they changed the behavior of the ambient lighting to make it part of the leaving/coming home lighting?

  11. #10
    Verified VCDS User hadez16's Avatar
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    Quote Originally Posted by rs5iswicked View Post
    Interesting.
    I was told in enough thread that the HBA was now sticky in the B9.5s....
    Do you know if they changed the behavior of the ambient lighting to make it part of the leaving/coming home lighting?
    It is "sticky". HBA reset is deactivated in B9.5
    Ambient lighting: I don't know

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