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Main Beam Noise / Click when Flashing Head Lights

This is a discussion on Main Beam Noise / Click when Flashing Head Lights within the West / West Coast Owners forums, part of the Focus RS Regional Forums category; Does anyone hear a loud click when you flash the main beams? I never have had this on other cars but its definitely noticeable on ...

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Thread: Main Beam Noise / Click when Flashing Head Lights

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    Main Beam Noise / Click when Flashing Head Lights

    Does anyone hear a loud click when you flash the main beams?
    I never have had this on other cars but its definitely noticeable on the RS. Kind of like a loud "tinny" relay click. Any thoughts?

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    It's normal for bi-xenon lights like ours.


    Pulled from The Retrofit Source:

    How bi-xenon projectors work:
    Bi-xenon means each projector has both a low and high beam pattern. Here, the light cutoff shield inside the projector is on a hinge. When powered, the bi-xenon solenoid pulls or pushes this flap/shield down to expose more light through the lens – thus creating the high beam pattern. When the high beam is deactivated, the cutoff shield retracts to its normal low beam position. If you ever researched HID headlights, you probably know its bad to flash an HID bulb on and off repeatedly like you would when using a high beam on a dark road. Bi-xenon projector systems are not subject to this problem because when toggling between low and high beams – the bulb is constantly lit, does not move, get any brighter, etc. The projector creates the high beam, not the bulb.


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    Last edited by Berto_702; 02-14-2018 at 02:14 AM.
    2017 Frozen White RS2 - Mountune Springs - Exhaust bypass mod - FSWerks Shifter Plate - FSWerks Shifter Bushings - Crystalline tint.

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    Quote Originally Posted by Berto_702 View Post
    It's normal for bi-xenon lights like ours.


    Pulled from The Retrofit Source:

    How bi-xenon projectors work:
    Bi-xenon means each projector has both a low and high beam pattern. Here, the light cutoff shield inside the projector is on a hinge. When powered, the bi-xenon solenoid pulls or pushes this flap/shield down to expose more light through the lens – thus creating the high beam pattern. When the high beam is deactivated, the cutoff shield retracts to its normal low beam position. If you ever researched HID headlights, you probably know its bad to flash an HID bulb on and off repeatedly like you would when using a high beam on a dark road. Bi-xenon projector systems are not subject to this problem because when toggling between low and high beams – the bulb is constantly lit, does not move, get any brighter, etc. The projector creates the high beam, not the bulb.


    Sent from my SM-G955U using Tapatalk
    Thanks for your "illuminating" reply. Sorry could not resist but good post.
    WoopsPooped likes this.

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    Thank you for shedding light on this issue!
    DoctorA and WoopsPooped like this.

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    Quote Originally Posted by DoctorA View Post
    Thanks for your "illuminating" reply. Sorry could not resist but good post.
    Quote Originally Posted by DannyLosAngeles View Post
    Thank you for shedding light on this issue!
    Happy to help brighten your day with good information.
    DoctorA and WoopsPooped like this.
    2017 Frozen White RS2 - Mountune Springs - Exhaust bypass mod - FSWerks Shifter Plate - FSWerks Shifter Bushings - Crystalline tint.

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    I was delighted to see such a helpful community on this thread.
    WoopsPooped

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