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  1. #1
    Carseat Crazy TheQueenMother's Avatar
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    Jul 2006
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    366

    Urgh, my Marathon keeps loosening on it's own

    I'm guessing the silver harness lock on the adjuster strap has stopped locking down. The first time I noticed it, I thought my dd had loosened it after I buckled the baby in but it has happened since so I am sure it is messed up.
    I really can't be out this seat.
    Amanda

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  3. #2
    Senior Community Member aeormsby's Avatar
    Join Date
    Mar 2008
    Location
    Colorado
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    2,615

    Re: Urgh, my Marathon keeps loosening on it's own

    How old is it? Give Britax a call tomorrow and see what they say.
    Ann

    DD - 1/06 - 5-stepping
    DS - 12/07 - Incognito, Recaro Performance Booster & Harmony Literiders
    And a Bubble Bum for backup/travel

  4. #3
    CPS Fanatic mlohry's Avatar
    Join Date
    Nov 2009
    Location
    Wisconsin
    Posts
    1,084
    They have had amazing customer service for me, dealing with my RA 50. The harness severely frayed on our less than a year old seat, they sent me a new one, and then that seat had issues too, the same thing as yours, the adjuster wouldn't hold the harness, but the seat was brand new. Now they are sending me a MA, to see if that a better option, honestly I am not sure if I am going to keep or sell that seat. I might be trying a different brand to see if it's more compatible with our van. Anyway, they were super helpful and really wanted me to have the safest seat possible. Have gone above and beyond I feel. Call them!
    Monica-former CPST, now just a car-seat safety freak.
    Samuel, 12 yrs, seat belt middle passenger row of our Odyssey.
    Mitchell, 10yrs, back row, Amp.
    Lucy, 6 years, booster. All of us occasionally ride in a Honda Fit.

  5. #4
    CPS Technician NannyMom's Avatar
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    Jul 2008
    Location
    Maryland
    Posts
    7,366

    Re: Urgh, my Marathon keeps loosening on it's own

    Is it an old seat? Is there fuzzing on the top sides of the adjuster trap? A friend of mine has a MA that's 4yrs old and that is exactly the problem. She has to make sure the silver piece is pushed down after she loosens or tightens.
    Mama to Sofi: 7.1 yrs, 46Lbs (47"), Boostered in a Turbo, Vivo, Monterey, Cybex; harnessed in Nautilus
    Nanny to BabyD, 21 months in a RXT, Classic Marathon, Boulevard 70

  6. #5
    Carseat Crazy TheQueenMother's Avatar
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    Jul 2006
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    366

    Re: Urgh, my Marathon keeps loosening on it's own

    The seat has a Dom of late 2007. I will give them a call tomorrow and see what they think.

  7. #6
    Senior Community Member Keeks64's Avatar
    Join Date
    Jan 2011
    Location
    Vancouver Island , BC
    Posts
    766
    My MA65 - Dom 2010 was doing that!!!!! Randomly lossening & then sometimes it would lock & I couldn't tighten it.... I called & they are replacing it with no problems....I have to send my old seat back ( Pre paid shipping) & I'm done super easy & they were very nice & helpful!!!!!

    Sent from my iPhone using Car-Seat.Org

    R: 09/2008, 40lbs & 44"
    D: 07/2012 27lbs & 33"

  8. #7
    CPS Technician ctbcleveland's Avatar
    Join Date
    Nov 2006
    Location
    OHIO
    Posts
    1,433

    Re: Urgh, my Marathon keeps loosening on it's own

    My marathon did the same thing. I ended up selling the seat because I needed it in a seatbelt only position and lost confidence in its ability to do its job.
    Chardon, Ohio - One Heartbeat - 2/27/12

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