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Discussion in 'Model S: Battery & Charging' started by Doug_G, Jul 2, 2013.

  1. Doug_G

    Doug_G Lead Moderator

    Apr 2, 2010
    Ottawa, Canada
    Recently, when plugging in my UMC, I've been getting repeated attempts by the car to lock the plug in place. Clicka-clicka. A couple of times the pilot didn't engage and I got slow charging.

    Anyone else get this? Is this a problem with the UMC connector or the car?
  2. FlasherZ

    FlasherZ Sig Model S + Sig Model X + Model 3 Resv

    Jun 21, 2012
    #2 FlasherZ, Jul 2, 2013
    Last edited: Jul 2, 2013
    Look at your tab beneath the "wand" connector, there's a little trough in there that the locking tab plugs into. Make sure there's nothing caked or cracked or blocking it. If the locking pin senses it hasn't engaged into the trough it will back off.
  3. mknox

    mknox Well-Known Member

    Aug 7, 2012
    Toronto, ON
    Yep. Although not as much recently. What was more distressing was when I'd plug in and nothing... the ring would stay white/pale blue and it would not lock or charge. Tesla replaced my original UMC, but the replacement starting acting up (not locking and/or the multiple clicking) fairly soon afterwards. (My cable and port were both clean as a whistle). Since about v4.4 of the software, it's been much more reliable. FWIW, the J1772 adapter and public chargers have always worked flawlessly for me.

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