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Coolant Low, Suspension service, Frunk Open, RH Headlight/Turn - Intermittent

Discussion in 'Model S' started by shadowinstallz, Dec 23, 2018.

  1. shadowinstallz

    Joined:
    Jun 15, 2014
    Messages:
    743
    Location:
    NYC, United States
    2015 Model S 85D 3/15 Build/Delivery - approx 85k

    Had my car serviced about a month ago for a failed steering U-joint which required removal of the HV battery.

    About a week after had the coolant low message, but figured it was just air in the system would go away. Msg didnt reappear for another couple weeks, but was also getting an intermittent Frunk open msg while driving which i figured it was from excess moisture during a huge down pour we had, so also ignored.
    Both Msgs didnt appear again until about last week, but now also had an intermittent Suspension needs service. First thought was a bug in software and would resolve after an update.....had an update the other day with no luck and now right side headlight works intermittently also with no turn signal. now random messages pop up while driving. Finally had time this weekend to take a look.

    Checked coolant and reservoir was full.
    Check Frunk Latch assembly and was clean, but cleaned/lubed as needed
    Insepcted/Cleaned/Reseated all connectors for headlight and frunk....while doing that i found a Broken Ground Nut !!!

    Did a temp fix connecting to ground nut on battery to have the car working, but will need to bring it up to Tesla. Anyone else have this issue? looks like the Ground Lug was not coated with anything and with cars that are in Winter Cliamtes with road salt etcc...the underbody section fo the frunk is not covered so can corrode the nut and break off, just like the Steering Rack Bolts. This has to be a TSB in tesla system.
     
    • Informative x 1
  2. shadowinstallz

    Joined:
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    Location:
    NYC, United States
    20181223_094411.jpg 20181223_094417.jpg
     

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  3. shadowinstallz

    Joined:
    Jun 15, 2014
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    Location:
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    20181223_094424.jpg
     
    • Informative x 1
  4. Russell

    Russell Supporting Member

    Joined:
    Sep 25, 2012
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    653
    Location:
    Silicon Valley
    That has happened before.
     
  5. N..8

    N..8 Member

    Joined:
    Dec 20, 2017
    Messages:
    166
    Location:
    Sanford, NC
    I've seen 4 or 5 post on the same thing. Might be from the salt they put on the roads up north, causing the accelerated corrosion.
     
  6. mrElbe

    mrElbe Active Member

    Joined:
    Aug 17, 2014
    Messages:
    1,588
    Location:
    Stouffville, ON Canada
    Had the same problem. I attribute it to over torquing the aluminum stud at the factory during assembly.
    Take a look here:

    Ground Stud
     
    • Informative x 1
  7. shadowinstallz

    Joined:
    Jun 15, 2014
    Messages:
    743
    Location:
    NYC, United States
    ah ha , nice!
     

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