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That very loud and painful "clunk"

Discussion in 'Model S: Driving Dynamics' started by FlasherZ, Feb 22, 2014.

  1. FlasherZ

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

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    As I sit waiting for roadside assistance, I can tell you that I now know that very loud "clunk" that precedes an entire car shutdown.

    Tonight, as the light turned green on my way home, I accelerated and +BAM+ it felt like I got rear ended. The car immediately fell flat acceleration-wise, the direction/gear indicator turned red, and messages started popping up... "PULL OVER SAFELY... car is shutting down", "car needs service", "car may not restart", and eventually "12v battery low - car may not restart". I pulled over on the hill I was on and guided it to a side street, where we pushed it into a parking lot. After sitting for a few moments the car powered back up, Tesla advised me no current alerts were on the car and that I should be able to drive. At the next light, CLUNK again as I tried accelerating.

    Luckily I was with some other owners at a local meet up event. They took the wife and kids home for me, and another driver stayed behind to take me home, I'll head there after we get it loaded and headed to the st Louis service center.

    As I understand it from reports here, it sounds like I am due for a bit of major surgery with this one.

    More to come...
     
  2. Greg G

    Greg G Member

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    *ugh* Bad news. Our thoughts are with you!
     
  3. Discoducky

    Discoducky Active Member

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    Bummer, hope the surgery is fast. Keep us updated! Does this mean new B pack? ;)
     
  4. FlasherZ

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

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    The service center said they will get to it first thing, it's being towed there. It may mean a new b/c/d pack, unknown at this point what the cause is, we just know that the contractors are disengaging.
     
  5. dave

    dave Member

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    Wow, horrible news Flasher! I hope she gets fixed soon.

    This message has me a bit paranoid now. Just tonight as we sat at a traffic light I heard a clunk and it felt like we had been very lightly rear ended. I turned on the rear camera, and the car behind me was way back. My wife felt it too. We thought it was very weird, but shrugged it off.

    We didn't have any car problems driving home, but now I'm wondering if that clunk was actually something internal in the car...
     
  6. FlasherZ

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

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    You'll know it... this one is a major clunk followed by all sorts of bells and whistles going off... and it's unlikely to happen while just sitting there (although I suppose it could happen...)
     
  7. bluefuego

    bluefuego Member

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    Egads... glad some of us were still close by to help/keep you company. I hope the STL SC can get it back up and running in no time.
     
  8. brianman

    brianman Burrito Founder

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    My bet: drive unit. :(
     
  9. apacheguy

    apacheguy Sig 255, VIN 320

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    #9 apacheguy, Feb 22, 2014
    Last edited: Feb 22, 2014
    Is it just me or has there been a surge of pack failures reported recently? Edmunds was the most recent and reported very similar symptoms as FlasherZ reports here.

    @FlasherZ - how many miles on the odo?

    My bet: HV Battery
     
  10. brianman

    brianman Burrito Founder

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    Mine made that noise recently. I had the drive unit replaced, but not the battery. But, just a slightly educated guess.
     
  11. FlasherZ

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

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    19500 miles. I suspect battery at this point, as I sat in the car the symptoms got progressively worse. When the flatbed arrived, we were unable to get it to power up the drivetrain - car needs service, 12v battery low - and it wouldn't go into gear. I was able to get it into tow mode so it could be dragged into the truck. As of 12:15 the 12v system had gone dead and I lost remote telemetry. If it were drive unit, my guess is that I wouldn't have lost the 12v system charging.
     
  12. brianman

    brianman Burrito Founder

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    Ah, with this new data, then yah big battery is a better bet. Bummer either way, FlasherZ.
     
  13. nleggatt

    nleggatt Member

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    Anyone have this happen on a 60 yet?
     
  14. qwk

    qwk Model S P2681

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    Sounds like an inverter failure.
     
  15. 100thMonkey

    100thMonkey Member

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    congratulations may be in order, you just may be a few days away from a brand new traction battery/inverter combo... hope it gets sorted quickly and has a happy ending!
     
  16. qwk

    qwk Model S P2681

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    Yes, Tesla replaces both the traction pack, and drive unit when the inverter fails. Although I wouldn't count on a "B" battery. Some of the latest A battery cars had their pack replaced with a refurbished "A" pack.
     
  17. walla2

    walla2 Member

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    This is the high voltage battery. You will get whatever battery they have in stock, possibly even my gently used old A pack. Hopefully, you get a new D though. Good luck Flasher. It appears that A packs fail at an unusually high rate (at least 3 Sigs in 3 weeks). This could be costly in the long term to owners and Tesla.
     
  18. Bound466

    Bound466 Member

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    Bummer FlasherZ.. Same thing happened to me back in November, just the way you described it, too. They replaced the battery pack in a day, and car was delivered back to my house. At least that part was painless.

    Mine was a 60.
     
  19. jdevo2004

    jdevo2004 Member

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    So what exactly causes the loud clunk? Is it a single battery exploding inside the pack? Is it some sort of huge arcing inside the electronics?
     
  20. Bardlebee

    Bardlebee Member

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    I am worried, if I am to order my car next week as I literally am, should I expect troubles like this or like the 12V battery dying? I wonder if they fixed all these kinks in the system already or if I will eventually see it being a new owner and getting my car in 3-4 months.
     

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