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No brake lights = no driving

Discussion in 'Steering, brakes & Suspension' started by Beachhippie, Apr 6, 2019.

  1. Beachhippie

    Beachhippie New Member

    Messages:
    18
    Location:
    Cairns
    Since driving my beautiful 74 T2 back from the coast I have encountered issues with my rear brake lights. I have checked the globes are patent and fuses are good. Did a little research and found my brake switches on the master cylinder. (Or at least I think I have )Looks like one has been damaged a little by the handbrake line rubbing against it. Is the next logical step to replace both of these switches and see what happens or is there anything else I should check first. Will try upload images to explain what I’m seeing
     
  2. Beachhippie

    Beachhippie New Member

    Messages:
    18
    Location:
    Cairns
    7B34BD90-2602-44D4-A534-517B21853957.jpeg Image attached
     
  3. cbus

    cbus Well-Known Member

    Messages:
    11,428
    Location:
    sunshine coast
    2 pin or 3 pin connections off the switches?
     
  4. cbus

    cbus Well-Known Member

    Messages:
    11,428
    Location:
    sunshine coast
    Pull the rubber boot off the damaged switch.
     
  5. Beachhippie

    Beachhippie New Member

    Messages:
    18
    Location:
    Cairns
    3 pin switch
     
  6. Wayne murray

    Wayne murray Well-Known Member

    Messages:
    2,540
    Location:
    Seven hills
    Do a brake light switch test ,as described in the Bentley how to do it. I don't know if the switch is damaged or is the age of the rubber boot deteriorating
    IMG_20190406_193320.jpg
     
    Beachhippie and Grantus like this.
  7. Beachhippie

    Beachhippie New Member

    Messages:
    18
    Location:
    Cairns
    Wayne Murray my replacement switches finally arrived today. What are the chance of a picture of the next page of how to replace switches? Is it difficult or shall I go ahead and have a crack
     
  8. cbus

    cbus Well-Known Member

    Messages:
    11,428
    Location:
    sunshine coast
    It's easy.
    Check the number of contact tabs are same.
    ie 2 or 3.

    Start to undo with a socket or ring spanner best.
    Prob need a deep socket to clear connections.

    Finish removal by hand and have the new one ready to fit.
    A small amount of fluid will come out but not much.
    You want to limit any air getting in.

    Check fluid level after installation.
    Shouldn't notice a change.
    Shouldn't need bleeding but test drive to test brakes still function correctly.
    If they don't then run a brake bleed proceedure according to manual or Ratwell.
     
    Ninga likes this.
  9. Beachhippie

    Beachhippie New Member

    Messages:
    18
    Location:
    Cairns
    Thank you cbus good news today I learnt how to replace brake switches and also now 1 of my brake lights is working . Unfortunately only one so will need to figure out why and move forward with next plannof attack. Thanks for you guidance one day I’ll know my way around these things
     
  10. Barry

    Barry Well-Known Member

    Messages:
    3,271
    Location:
    Abbotsford NSW
    They are wired in parallel - so if one is working the other "should"

    One of the following
    * bulb is blown
    * bulb no seated properly in holder
    * wires on the side not connected properly

    It will be something simple now.

    Now is when you need to be able to use a multimeter
    Will make like so much easier
     
    Wayne murray and Beachhippie like this.
  11. Beachhippie

    Beachhippie New Member

    Messages:
    18
    Location:
    Cairns
    Well that’s good to know will go ahead and double check all of the above and purchase a multimeter....I’m sure I’ll be needing one again some time in the future
     
  12. Wayne murray

    Wayne murray Well-Known Member

    Messages:
    2,540
    Location:
    Seven hills
    Next page,it looks like you have already worked it out.

    IMG_20190416_191740.jpg
     
  13. Beachhippie

    Beachhippie New Member

    Messages:
    18
    Location:
    Cairns
    Thanks wayne almost got it sorted thank you for your help
     
  14. Roo

    Roo Active Member

    Messages:
    335
    Location:
    Riverina
    Agree with Barry on the multimeter or even just a simple test light will tell you what you need to know. Easier to use as well.
     
  15. deeksy62

    deeksy62 Active Member

    Messages:
    666
    Location:
    Sawtell
    Good job so far!
    Also check where the bulb is seated for corrosion, maybe give it a clean.
    Also the earth on the side that is not working.

    Good luck.
     
  16. Beachhippie

    Beachhippie New Member

    Messages:
    18
    Location:
    Cairns
    Thanks guys for all your assistance and advice. I am happy to say I now have brake lights and also a little embarrassed to say it was a really simple fix. Had to get my head stuck through the back and just cleaned the contact points and pushed them forward a little more to ensure a good connection, replaced a new globe and whala we are driving. Straight out on the road for a beach day with the kids - on a positive I now know how to change brake switches
     
    tintop, Grantus and Barry like this.
  17. cbus

    cbus Well-Known Member

    Messages:
    11,428
    Location:
    sunshine coast
    You will find that a lot of issues on kombis have similar simple fixes.
    Probably most.
    Old wiring just needs connections cleaned.
    Follow the trail to find the bits.
    It soon becomes routine.
    Having found a solution it means you have a quick heads up if it happens again .
     
    Beachhippie likes this.

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