Model S

"Vehicle system shutting down:" HELP!

edited November -1 in Model S
My 2014 MS 85 lost power and shut down in both different times while driving and supercharging. It happened twice in about a month. Both times the vehicle was not drivable and had to be towed to two different service centers. I've had this vehicle for 5 years and never experience anything like this. I took it for service both times and there was no resolution to the issue. While I comply with the service advisor's recommendations I'm also asking for any advice here.

The first incident happened on 6-16-19 when I was driving then several alerts appeared on the dash. Messages showed in the following order:
"Car needs service: Car may not restart"
"Car needs service: PULL OVER SAFELY"
"Power reduced: Vehicle system down"
Then I noticed a total power shutdown. The vehicle had to be towed to the Burlingame, CA. service center (SC). The vehicle was in service for 1 week. I was told by the advisor the most likely cause was a change in voltage going through High Voltage Interlock Loop (HVILP) but since the technician wasn't able to reproduce the problem they can't repair it. I was advised to keep it running and drive straight to the nearest SC next time it happens and take pictures.

Several weeks later the second incident happened on 7-13-19 when I was supercharging. A single message appeared: "Power reduced: Vehicle system shutting down." Again, I experienced a total power shutdown and the vehicle had to be towed to San Francisco, CA. SC this time. I had to pay the towing fee ($500) upfront since Tesla Roadside assistance stated that my vehicle is out of warranty except for the battery pack and drive train. Two weeks and three days today, I got a call from the service advisor (and daily updates) with similar feedback from the last time. I was told the technicians couldn't reproduce the problem and no repairs were made other than tightening a single loose electrical cable.

Has anyone experienced any failure with the HVILP before?


  • edited July 2019
    I saw the same symptoms about six weeks ago on my 2012 P85 Model S.
    The same warning sign followed by a complete loss of power, even though the battery had plenty of charge.

    I had it towed to Sunnyvale Tesla where they determined that liquid had entered the drive system.
    The drive unit was replaced under warranty.

    Hope that helps. Good luck.
  • edited November -1
    Apparently Tkim is not familiar with mobile service which comes to your house. My guys have come from 400 and 700 miles to work in my driveway.
  • edited November -1
    He's advertising for Porsche.
  • edited November -1
    I had to drive 550 miles to service my Porsche.
  • edited August 2019
    Tkim is spamming more than your regular trolls. Why would any same owner paste the same message in every active thread?
  • edited November -1
    Tkim is likely a spam bot. Glad to see him flagged away in some threads. Also I sent a note to corporate about him.
  • edited August 2019
    Mine shut down 8/16/2019, towed to service center, I did not get a clear explanation why my car shut down. I posted it on a different thread here
  • edited July 19
    My Model X has experienced this message (power limited - please schedule service) 2x on 7-19-2020 while on road trip, losing power while driving on freeway in 96 degrees. My first time with Emergency Roadside Service (after 2 hang ups and over 1 hour wait), they said they couldn't diagnose remotely and required tow to service center. After tow to Service Center, it was closed and Sales couldn't provide loaner. Warning message went away so I began driving home, only to have warning appear half hour later and lose power on freeway again. Lucky to coast into hotel at offramp and now have to wait until Monday for mobile service. If tow is required again, Tesla will not pay, stating only one tow per warranty issue. Is this a known issue with Model X? Advice? This experience has been a nightmare and making me re-think owning a Tesla.
  • edited November -1
    Yeah, I see your point. Nothing like that would happen with any other car you own, huh? Every other manufacturer would not fail. So just pick any other car when you are replacing your Tesla. Nothing can go wrong.
  • edited July 19
    @Gnat, do you have towing with your insurance company? If not I suggest getting it or something like AAA towing.
  • edited July 19
    Loaners are not common anymore, esp on short notice.

    Even if you got one, you probably could not continue your trip with it, as miles are limited.

    You did not ask for Uber credits?
  • edited August 1
    @Gnat: We’re you able to get your car fixed? Did they tell you what’s wrong with it?

    I have a model X too and This just happened to me today.
  • Hi, this exact thing happened with my model 3 today. It gave me 5-10 seconds. By the time I could figure out what was going on, the car stopped in the middle of heavy traffic road. Won’t go into neutral also. I had upgraded to a newer version (v2020.32.3) 4-5 hours back. May be related to that. Pretty scary I would say. Sending to Tesla service center. Hopefully will know what was the RCA.
  • HVIL fault is a rare, but known problem. There is a complete service letter on how to diagnose. I had to print it out and leave it on the windscreen for SeC personel before they would take it seriously. They eventually found the problem, bad contactors in the pack, and it was fixed under warranty.
Sign In or Register to comment.