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Dipped beams not working

  • 08-02-2018 5:26pm
    #1
    cletus
    Registered Users, Registered Users 2 Posts: 8,186 ✭✭✭


    Looking for a point in the right direction here.

    03 focus estate 1.6 petrol

    Left dipped build blew a couple of days ago, then the right blew yesterday evening. Dropped into motor factors this morning, two new h7 bulbs, put both in, neither working. Checked that the bulbs weren't blown, and were seated correctly. Still no joy

    Checked both dipped beam fuses in the aux fuse box, both fine. Checked all other fuses because electrics. All fine

    Swapped the main beam relay for the dipped beam relay. Fulls working, still no dipped beams.

    If anybody has a suggestion for next step I'd love to hear it


Comments

  • #2
    at9qu5vp0wcix7
    Closed Accounts Posts: 738 ✭✭✭at9qu5vp0wcix7


    Remarkably, I have the same problem on a Focus! https://www.boards.ie/vbulletin/showthread.php?t=2057839386


  • #3
    mayota
    Registered Users, Registered Users 2 Posts: 1,563 ✭✭✭mayota


    Heard of same problem with 05 mondeo.


  • #4
    cletus
    Registered Users, Registered Users 2 Posts: 8,186 ✭✭✭cletus


    I've been doing a bit of searching, and I've come up with this thread

    https://mechanics.stackexchange.com/questions/19666/low-beams-wont-work

    It gives a fairly thorough run through of trouble shooting the connections with a multimeter.

    Will give it a shot and report back


  • #5
    cletus
    Registered Users, Registered Users 2 Posts: 8,186 ✭✭✭cletus


    An update for those few who might be interested.

    I had my multimeter out and ready to go, but heeding the old maxim, never trust the work that went before you, even if it's your own, I said I'd check the connections at the bulb first.

    Thought I could see a little corrosion on the connections, so out with the needle files. Low and behold, both bulbs now working.

    All that was left to do then was figure out why the abs light was on constantly. Turns out the fuse for the abs doesn't work if it's been put in the slot for xenon headlights :(


  • #6
    biko
    Registered Users, Registered Users 2 Posts: 81,220 ✭✭✭✭biko


    So you just filed off the corrosion and that was it?


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  • #7
    cletus
    Registered Users, Registered Users 2 Posts: 8,186 ✭✭✭cletus


    biko wrote: »
    So you just filed off the corrosion and that was it?

    Yep


  • #8
    at9qu5vp0wcix7
    Closed Accounts Posts: 738 ✭✭✭at9qu5vp0wcix7


    You are a genius! I should have thought of this when I noticed that the water-proof covers at the back of my headlights were missing!


  • #9
    cletus
    Registered Users, Registered Users 2 Posts: 8,186 ✭✭✭cletus


    Charles Many Grout wrote: »
    You are a genius! I should have thought of this when I noticed that the water-proof covers at the back of my headlights were missing!

    Ah stop, you're making me blush...


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