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Thread: Turn Signal Not Making Clicking Sound

  1. #1

    Turn Signal Not Making Clicking Sound

    My turn signals were not making the clicking sound when engaged. I cleaned the contacts on the relay and now everything works.
    Last edited by prs356; 03-18-2023 at 11:29 AM.

  2. #2
    A great technical question. Moved here.
    Peter Kane

    '72 911S Targa
    Message Board Co-Moderator - Early 911S Registry #100

  3. #3
    PS - updated title. Interesting…never thought about this. What does make the clicking sound?
    Peter Kane

    '72 911S Targa
    Message Board Co-Moderator - Early 911S Registry #100

  4. #4
    Its the relay isn't it??
    Clyde Boyer

    1973 2.4E Coupe RHD Aussie 5 speed
    1973 2.4E Coupe RHD Aussie 5 speed my first ever 911 (1995)
    2016 M3 Competition

    Early S Registry Member #294
    First Aussie R Gruppe Member #366
    TYP 901 Register Inc #6

  5. #5
    Senior Member
    Join Date
    Oct 2008
    Burford, ON, Canada
    Yes, the electromechanical relay has a solenoid (an electric magnet) that when energized pulls on an iron plate (hinged and sprung to pull it back) that engages a set of contacts. As with any magnet and iron plate, as the magnet approaches the plate will suddenly jump into contact and you will hear the snap as it does so. Just as if you drop a plate on the floor, you will hear it stop. So mechanical relays always make some noise when the engage. Now the flasher relay is a bit of a special case in that it automatically disengages and reengages in a periodic fashion; thus flashing. A buzzer is an extension of this where the period is very short, and the individual clicks are lost and all you hear is a buzz.
    Porsche Historian, contact for Kardex & CoA-type Reports
    Addicted since 1975, ESR mbr# 2200 to 2023 03
    Researching Paint codes and Engine Build numbers

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