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Leaking rear lights

Discussion in 'Electrics, Vacuum, Ignition and ECU' started by oldmedic999, Oct 12, 2019 at 3:04 PM.

  1. oldmedic999

    oldmedic999 Senior Member

    Messages:
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    Joined:
    Feb 5, 2011
    Location:
    Hertford Herts
    Your Mercedes:
    CLS 350 CDI 2010 3litre
    Seems that my rear lights are letting in Water.Any ideal were I can get some replacement seals for my Lights.
    2010 CLS 350 CDI. The uplifted lights with LED's


    Thanks All
     
  2. ajlsl600

    ajlsl600 Senior Member

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    Joined:
    Nov 18, 2013
    Location:
    france
    Your Mercedes:
    clk3202001,sl6002003 with everything,A class 170cdi auto
    if not too complex try making yr own with a tube of clear silicon, from somewhere like BandQ complete with dispensing gun ,with tip cut to allow right diameter bead and refit lights when only just gone off,ie still compressible. i would put a bead of equal diameter on a piece of cardboard as a control check for the cure. it does seem original seals inadequate??. dont wait for it to get completely hard.
     
  3. om613

    om613 Senior Member

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    Joined:
    Aug 29, 2015
    Location:
    london
    Your Mercedes:
    S202 C250TD, S123 240TD
    Leaking where? Into the light unit (all misty) or into the car (all wet)?

    Silicon would likely work. May make any subsequent removal much harder than using the proper item.
     
  4. Larkone

    Larkone Senior Member

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    93
    Joined:
    Aug 19, 2016
    Location:
    NW Essex
    Your Mercedes:
    CLS 320CDI 2008
    Had similar on my 2008 CLS and it turned out to be letting in water through the plastic clips that hold down the black plastic trim around the boot channels on each side. Those wonderful strips that collect old leaves in them that rot to a black mush. Fixed by removing the strips and siliconing around the fixings.
     
  5. ajlsl600

    ajlsl600 Senior Member

    Messages:
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    1,144
    Joined:
    Nov 18, 2013
    Location:
    france
    Your Mercedes:
    clk3202001,sl6002003 with everything,A class 170cdi auto

    not so much if its mostly cured before squeezing together. not hard !
     
  6. DREAMER NO2

    DREAMER NO2 Senior Member

    Messages:
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    Joined:
    Dec 29, 2013
    Location:
    Kidderminster in Worcestershire
    Your Mercedes:
    W124 2.6E M103 1989
    I remove my rear lights every year they are a known to let water in to the boot . All lights are the same and the seals perish over time clamped up in one place . Remove the light wash the rubber ,dry off and apply a coat of clear silicon grease on to the seal ,job done..And, i you use this method it will be easy to remove the light the next time .
     

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