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Thread: Crack in taillight lens

  1. #1
    Registered Member

    2018 CX-5 Touring

    Join Date
    Feb 2010

    Crack in taillight lens

    I recently bought a new 2018 Touring. (Very nice) My son is taking my 2015 Sport. When I was cleaning up the Sport I found a star type crack in the passenger side taillight. I suspect the lens is not replaceable by itself. No moisture inside. I would like to do a repair of some kind. My first thought is thin instant glue applied to the center of the star since that's the only place I feel roughness. I'm hoping that would wick in. Or maybe a smear of clear silicone. Most epoxy are not good with UV but there are some that resist it. Any thoughts? Would like to avoid a full replacement since I detect no moisture,

  2. #2
    Registered Member

    2013 CX-5 Touring FWD; 2013 BMW Z4 35i

    Join Date
    Mar 2012
    Santa Rosa, CA
    I'd go the silicone route if I were you. Make sure you get something that's UV resistant.

  3. #3
    Underutilized Member shadonoz's Avatar
    Donated: $5

    2017 CX-5 GT AWD Tech

    Join Date
    Oct 2017
    Southern Oregon
    Don't know anything about this, but it sounds like just the ticket.

  4. #4
    Registered Member

    2016.5 CX-5 GT

    Join Date
    Sep 2016
    I think clear silicone will be better. Instant glue doesn't bond well and some brands actually "melt" the plastic and leave a ugly white residue. Also the coefficient of thermal expansion of instant glue versus the oem plastic maybe different under the hot sun or winter ice so it may actually make it worse and crack more. Just use clear silicone and call it the day...just my 2 cents....

  5. #5
    Registered Member erhayes's Avatar
    Donated: $10

    Mazda CX-5 FWD Touring

    Join Date
    Jan 2007
    Cape Coral, FL.
    +1 clear silicone

  6. #6
    Registered Member SonicBoy's Avatar

    2012 Mazda3 GTE - Indigo Lights Mica

    Join Date
    Jan 2008
    Toronto, ON Canada
    On the right track to seal it.

    With the GTs there's a circuit board inside the tail lamp and you really don't want moisture in there given the assembly is $$$$.

    Even though OP is a touring, moisture in a tail light not good in winter if in a cold climate region.

  7. #7
    Banned Chris_Top_Her's Avatar
    Donated: $45
    CX Moderator

    '15 CX-5 Miata GT AWD w/Tech 2.5L

    Join Date
    Sep 2012
    San Antonio TX
    If there is a star take the smallest drill bit you can find and drill the middle, then put clear automotive silicon on it. Drilling stops the crack spreading.

  8. #8
    Registered Member

    2018 CX-5 Touring

    Join Date
    Feb 2010
    Thank you all. I think we'll go with the small hole drill and silicone sealing.

  9. #9
    Registered Member

    CX-5 AWD, 2017

    Join Date
    Aug 2017
    How about using your warranty right. It is a 2018 model after all!

  10. #10

    '16.5 Mazda CX-5 Touring AWD, '05 PRIUS

    Join Date
    Dec 2005
    Red Bluff, CA
    Quote Originally Posted by raj55 View Post
    How about using your warranty right. It is a 2018 model after all!
    No it is a 2015 model they are working on.
    Mazda's I have owned over the years. (boom07)
    80' Mazda GLC SPORT MT - sold
    81' Mazda 626 DX MT - sold
    81' Mazda 626 LX AT - sold
    82' Mazda 626 DX MT - sold
    82' Mazda 626 LX AT - sold
    85' Mazda 626 LX MT - sold
    87' Mazda 626 GT Turbo MT - sold
    85' Mazda RX-7 GSL-SE MT- sold
    87' Mazda RX-7 Turbo 2 MT - sold
    91' Mazda Protege LX MT - sold
    92' Mazda MX-5 Miata MT - sold
    93' Mazda MX-3 GS-V6 Special Edition MT - sold
    00' Mazda 626 LX-V6 MT - sold
    02.5' Mazda Protege5 MT - sold
    92' Mazda MX-5 Miata MT - sold
    06' Mazda 5 Touring AT - sold
    13' Mazda CX-5 Touring AT - sold
    14' Mazda 3i Grand Touring MT - sold
    15' Mazda CX-5 Touring AWD AT - sold
    03' Mazda Protege5 AT - sold
    16.5' Mazda CX-5 Touring AWD AT - current
    09' Mazda Mazdaspeed3 GT - current

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