brake failure indicator light- she's flickering

Discussion in 'Airheads' started by rfuerst911sc, May 27, 2013.

  1. rfuerst911sc

    rfuerst911sc Adventurer

    Joined:
    Jun 21, 2012
    Oddometer:
    58
    Yesterday I took my 1976 R90/6 out for a nice drive, weather was great and she ran fine. But I noticed at idle the brake failure light was flickering on and off. Front and rear brakes are working fine, they have good feel with nothing out of the ordinary that I can see/feel. What is the purpose of this warning light ? What is it telling me ? Now that I think about it maybe I should go check to see if the brake light ( bulb ) is working.
    #1
  2. Bill Harris

    Bill Harris Confirmed Curmudgeon

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    This isn't a trick question, is it? :deal

    It means that you brakes are about to fail. On that vintage it's probably driven by the brake fluid level in the reservoir, so I'd guess it means that the brake fluid is low.

    --Bill
    #2
  3. Horsehockey

    Horsehockey A GPS? Huh?

    Joined:
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    The "brake failure" light is actually a "low fluid" light. The flickering indicates a couple possibilities: I'd start with removing your fuel tank to access the master cylinder reservoir. Fluid level good? Now examine the two wires to the cap: any chance one of them is loose or making contact with the bottom of your fuel tank? Intermittent contact will short it out and cause a flickering. There are a couple other possibilities, but I'd start with those two.
    #3
  4. Kai Ju

    Kai Ju Long timer

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    And the reasons that the fluid level is low is either worn pads, which is unlikely, or that the M/C is leaking, which is likely.
    Your frame paint will tell you.
    #4
  5. Bill Harris

    Bill Harris Confirmed Curmudgeon

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    I'll bet it is worn pads, at the least:

    --Bill
    #5