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Shut down with supercharger in sight

Discussion in 'Model S: Battery & Charging' started by David99, Oct 23, 2019.

  1. David99

    David99 Active Member

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    I'm not asking for 2 more minutes to floor it. I'm asking for a less dangerous transition. How about 30-45 seconds of very limited power. 20 kW for 45 seconds would help me get out of the freeway.
     
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  2. David99

    David99 Active Member

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    Found a tow service that came. All in all I was there for only one hour. The driver was a Tesla fan and excited. It cost $95 which I think is very reasonable considering it was 4 am. I plugged in and it started charging right away.

    20191023_045545.jpg
     
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  3. ancreserve

    ancreserve Member

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    Earlier this month I was road tripping and was just 3 miles from the supercharger when the car shut down with only a few seconds of warning. Navigation said I would arrive with 10% battery at the SC and it said I had 27 miles of range when it died. While waiting for the tow truck the range dropped down to 0. Tesla later told me that I had a battery imbalance, but they still stuck me with the tow charge even though I'm under warranty.
     
    • Informative x 1
  4. BigNick

    BigNick Disaffected Member

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    Yup, had to push mine into a stall and charge once. All Model S cars are heavy and difficult to push.
     
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  5. Silicon Desert

    Silicon Desert Active Member

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    Nice info and thanks for being honest about what happened. And I am sure you noticed the many comments from people that think they are so much more smarter than you are and it will never happen to them...…. until it does :D I agree that the car CAN do more to warn a driver and in fact it is being worked on.
     
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  6. cduzz

    cduzz Member

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    A warning isn't really good since ... it can be ignored.

    Optionally enabled "range throttles" such as those already against the HVAC would be nice; you could have the options be:
    • Nanny (car power severely limited below X%; may not be able to climb hills)
    • Roulette (car gives 0-20 seconds warning then dies)
     
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  7. Silicon Desert

    Silicon Desert Active Member

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    yea, I agree with that. Perhaps only a warning is a wrong choice of words. Many things can be done to help.
     
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  8. Need

    Need Active Member

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    Too bad it didn't happen before Tesla pushed out the extra 5% range update, or you could have made it! Did you set Navigation to go to that Supercharger? Does it tell you that you will make it? What did your rated range show when you shut down? When it shuts down, did it sill let you steer to the side of the road on Natural?
     
  9. David99

    David99 Active Member

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    Yes the car has all features and functions working except main motor and HVAC. It does feel like coasting in Neutral. The 12 Volt system is still running as long as the 12 Volt battery is good. Eventually it will be depleted because the main battery isn't charging it any more. That's why I recommend to get out of the car and let it be. It will use very little power that way. Sitting in it has all systems turned on and it will drain much faster.

    Yes I had the supercharger in my navigation and it did say I would be reaching it. But the car's calculation is off because it is not designed to include a trailer causing excessive energy consumption. I don't think the car will allow you to drive longer when you have a charger as destination. It seems to shut down when it thinks it needs to. No other considerations.

    It showed 1 mile left when it shut down.
     
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  10. dark cloud

    dark cloud Active Member

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    All you need to do is have a small generator in your trailer.
     
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  11. ohmman

    ohmman Plaid-ish Moderator

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    A small generator would have helped this one time out of his 5 years of ownership. But I think @David99 was clear when he said he just wasn't paying attention. I've heard the generator suggestion a number of times, but owning and maintaining a generator for an extremely rare event doesn't seem like the best idea. A tiny bit more caution goes a long way.
     
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  12. Evoforce

    Evoforce Active Member

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    #32 Evoforce, Oct 25, 2019
    Last edited: Oct 25, 2019
    A small generator will charge at about 4 miles per hour. He was towing a trailer that cuts range by 50%. Sure he could unhook the trailer but a generator charge takes a long time especially when heating or cooling needs to be used for occupants. It would in fact work, but take some time and would have added to his tow weight with generator and fuel. He also would have to have a way of securing his valuables on his trailer while detached.
     
  13. Evoforce

    Evoforce Active Member

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    It is a good tip of contacting local police and has worked for me when Tesla tow contacts could not help. Some Model S did not come with a tow hook from the factory but they do have the socket for it and maybe you have one of those cars. Tesla advises the tow company to hook to the suspension in such cases.
     
  14. Kenz

    Kenz Member

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    #34 Kenz, Oct 25, 2019
    Last edited: Oct 25, 2019
    I like the idea of power limiting the car for the last few miles of range.
    Maybe if the car was power limited when it gets to 5% or less it would keep people from getting stranded or worse damage the battery.
    Maybe at 5% limit speed to 50 mph, at 4% limit to 40 mph, at 3% limit to 30 mph, at 2% limit to 20 mph and at 1% limit to 10 mph.
    A suggestion Tesla could consider.
     
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  15. Evoforce

    Evoforce Active Member

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    #35 Evoforce, Oct 25, 2019
    Last edited: Oct 25, 2019
    As the OP knows, towing is a change from the normal. The range computer will be off and you have to be very vigilant with your navigation. It is very easy to be towing more weight than what you might think. These electric vehicles tow like there is nothing there except for watching the electrons being sucked down much more rapidly depending on load. Less range (of course) is a factor for both electric or gas when towing.

    For anyone that has had a short range electric, think of what you may face going on a long trip with said vehicle. Very similar navigating experience in many ways.

    The OP also gives some other very good tips on being prepared. I would like to add having some reflective triangles, flashing trouble light, flares, etc as the 12 volt quickly dies and kills the emergency flashers. Having a 9 volt transistor battery can work to pop the frunk on facelift vehicles and removing the nosecone on pre facelift gives access to jumper posts.
     
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  16. Kenz

    Kenz Member

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    The electric vehicles that legacy auto makers are releasing have more of a "protected" top and bottom range of the battery.
    They do it for exactly this reason. There are people that will regularly charge to 100% even though it is not good for the battery.
    The same is true for people running the battery down to zero. Maybe you need to buy an Audi E-tron.
    Sounds like your battery can file charges for abuse.
     
    • Disagree x 1
  17. Babaron

    Babaron Member

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    David 99, am I to understand that you were towing a trailer with a model S? I didn’t think that was possible with the model S. Or do you have a model X?
     
  18. dark cloud

    dark cloud Active Member

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    Totally agree it is not worth it. And if the generator is not used often enough it may not run anyway as the gas would be gummed up varnish.

    Like David confessed, he continually used to brag about coasting into the superchargers with minimal range, and suggested others were nervous nelly's in that they never go below 10%. Going forward I am sure David has learned his lesson and will have at least 3 miles of range left rolling into the superchargers.
     
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  19. dark cloud

    dark cloud Active Member

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    I am looking forward to see how many Audi electric vehicles get close to the mileage that David has. And how the repair history will compare.
     
  20. Kenz

    Kenz Member

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    The Audi E tron can not get the range of a Tesla.
    Audi has limited access to the top and bottom of the battery because they do not trust people to not abuse their batteries.
    Charging to 100% and running the battery down to 0% is battery abuse in a Tesla because Tesla allows access to a larger part of the battery. These are the same people that will complain about range loss or slower charging speed after they abuse their battery.
    Then they will want Tesla to replace the battery for free. Take care of your battery and you will enjoy your car for a very long time.
     
    • Disagree x 1

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