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Loose Ground Stud

Loose Ground Stud

Being have some odd electrical quirks recently so called Tesla. Told them the symtoms and quickly determined likely cause is loose ground stud. They said its fairly common. Car is in getting fixed now. Anyone have this issue? Is it related to corrosion at all? Im in Ontario Canada so lots of salt. Have the improved tbe design if it is a weak point?

Anthony J. Parisio | January 4, 2017

Never read of this before on this forum. I have been here for four years.

johnfrum | April 22, 2017

Id take that with a pinch of salt.

Bighorn | April 22, 2017

Yes, there is a ground that is prone to corrosion on the passenger side frunk--lots of mysterious electrical symptoms can develop from it. It's a known issue. Results from two different metals and is exacerbated in salty environments. Another member photo documented a DIY fix recently, also in Canada..

Bighorn | April 22, 2017

Photo of the bad ground:
https://m.imgur.com/8CJkYro?r

Mike83 | April 22, 2017

In four years with two Teslas have never had this issue or heard of it.

Bighorn | April 22, 2017

@Mike
You and Anthony both have somewhat selective attention when it comes to faults with Tesla. There are probably half a dozen people in that link who've reported the exact issue the OP is querying. That won't be news to most people, but it might be helpful to have a modicum of self-awareness regarding your inherent biases. Sorry if that seems critical--it's what I've observed in my four years.

johnfrum | April 22, 2017

I don't recall that.

johnfrum | April 22, 2017

But perhaps NHTSA will.

Mike83 | April 22, 2017

No Bighorn. I have not heard of this or from the Service dept. Lots of strange information on these forums and much of it FUD .I did the seat belt check and a replaced drive and 12v battery all for free but that.s about it.

johnfrum | April 22, 2017

Frightening
Unforeseen
Defects

Bighorn | April 22, 2017

No reason for service to have mentioned a problem that doesn't pertain to you. There is tons of useful information to be garnered from the forum if you don't pre-judge it all to be chaff. The above links are prime examples. Do with that what you will.

Mike83 | April 22, 2017

I get factual information from the chat on Tesla.com page and owners I meet at Superchargers. Trusting anonymous posters is a waste especially if as you say it doesn't pertain to reality. Any issues have been handled by calling the Service dept. which most rational people would do.

carlk | April 22, 2017

Galvanic corrosion between copper and aluminum connection could be the culprit. A few decades ago aluminum house wiring was popular but not anymore.

Bighorn | April 22, 2017

So if you intentionally maintain a narrow scope, why offer a useless and inaccurate answer to the OP? Waste of bandwidth don't you think?

Mike83 | April 22, 2017

You like to argue.I suggest the OP call Service and/or chat. If you want a solution try finding one.

Bighorn | April 22, 2017

You said:

"In four years with two Teslas have never had this issue or heard of it."
after I posted pertinent information that addressed the OP's question.

I had oatmeal for breakfast.

Mike83 | April 22, 2017

I missed your post as I posted that I don't have this issue. That is cool.

I am having a cappuccino as I just woke up. Oatmeal with maple sound good.

Bighorn | April 22, 2017

I was making a diagnostic assessment, not starting an argument. I thought I was pretty clear.

Bighorn | April 22, 2017

All is well Enjoy your day :)

KP in NPT | April 22, 2017

Many owners, myself included, come here first before calling service to see if others have experienced an issue. That is an inherent quality of car forums. Just today someone posted about an issue I have experienced recently an I offered what service told me and to send him a recording. It is a valuable resource that you can dismiss if you choose - but I find it useful and don't automatically assume everything posted is BS.

I just did the exact same thing for our ICE with windows not operating - simple fix that would have been a waste of mine and service's time.

Because of posts here, I have recognized things as known issues (fog in tail lights, bugs after updates for example.)

Bighorn | April 22, 2017

Is johnfrum another Whompywheels reincarnate? How many people are NHTSA-obsessed?

Mike83 | April 22, 2017

It's a great day. Enjoy the day Bighorn.

carlk | April 22, 2017

I do take any of these posts, especially from new posters which op of this thread is not, with suspicious eyes. Posters who report such issues owe us as much details as possible. Many of them just hit and ran and left us argue among ourselves without any idea whether it did or did not happen. It's good to have correct info but it's so much worse to let fake news to contaminate our info base. It does no one any good. I don't have any doubts that this op is legit though.

carlk | April 22, 2017

BTW like I mentioned earlier this is likely caused by galvanic corrosion which only happens when electrolyte (salt water) got into to interface of two dissimilar metals, copper and aluminum in this case, that carry electric current. People who live in sunbelts will never see this to happen.

jckruege | March 29, 2019

I had similar issues and poor electrical ground connection was the root cause. Starting about 2 weeks ago, my 2013 model S P85+ experienced a quick succession of several warnings that lasted seconds and then vanished. Over the course of the next two weeks, the warnings lasted longer and finally the last two days, the warnings persisted for my entire 50 min work commute each way. Displayed warnings (in no particular order) include 1) ABS needs service, 2) Stability control disabled, 3) Regenerative braking disabled, 4) Traction control disabled, 5) Vehicle coolant is low. Also experienced no power brakes, no power steering, and issues with the left blinker. Tesla service remotely reviewed my car logs and suggested that faulty ground may be the issue. I cleaned-up the ground connections and all of these problems disappeared! There is a ground stud that protrudes from the left and right main structural beam under the front trunk plastic shell. For each of these studs, I removed the nut and ground lugs, cleaned them with a wire brush, then reinstalled with electrical grease (to greatly slow future corrosion). Thank you Tesla service for identifying the likely cause, and thank this forum for supporting information.