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Tesla Model S Caught Fire While Parked and Unplugged

cartechboy writes "The safety headlines involving the Tesla Model S were a mixed bag last year. The good news was the Model S received a top safety rating, but the bad news came with three of those electric cars catching fire after receiving damage to the battery packs. (Though coverage of the latter was disproportionate to the coverage of fires in other types of vehicle.) Now another Tesla Model S has caught fire, but this time the car was parked and unplugged. The fire happened earlier this morning in the owner's garage in Toronto, Ontario. At this time no one knows what sparked the fire, but we do know the vehicle was only about four months old. Again, it wasn't plugged into a charging station, and it wasn't turned on. With no one near it. Interestingly, the battery on this particular Model S was unscathed by the fire. In fact, the Toronto fire department says the fire didn't originate in the battery, the charging system, the adapter or electrical receptacle since all of those components weren't touched by the fire. So, how did this Tesla fire happen, and will this blow up into a larger issue for the new automaker?"

43 of 329 comments (clear)

  1. Not from the car? by Dthief · · Score: 5, Insightful
    Why are they assuming it was started by the car?

    "In fact, the Toronto fire department says the fire didn't originate in the battery, the charging system, the adapter or electrical receptacle since all of those components weren't touched by the fire"

    maybe the fire was cause by something in the garage adjacent to the car?

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    1. Re:Not from the car? by interkin3tic · · Score: 2, Insightful

      Clearly GM set the fire intentionally and then paid off the fire department to say it was the Tesla, but the fire department failed to make it convincing! WAKE UP SHEEPLE! There's a vast incompetent conspiracy going on!

    2. Re:Not from the car? by TWX · · Score: 2

      A friend of mine had a house fire whose origin could not be reliably determined. It's not all that uncommon for the source of a fire to be unresolved. That's almost worse for Tesla as it plants the seed of doubt in a way that can't be readily defended against. Even a citing of some feature of the car could be better as that feature or aspect could be changed, but if the cause isn't determined then there's nothing to do to fix it.

      --
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    3. Re:Not from the car? by icebike · · Score: 2

      Why are they assuming it was started by the car?

      "In fact, the Toronto fire department says the fire didn't originate in the battery, the charging system, the adapter or electrical receptacle since all of those components weren't touched by the fire"

      maybe the fire was cause by something in the garage adjacent to the car?

      Looking at the pictures, you see that from all appearances, the car itself wasn't even involved. It simply happened to be there.

      The fire department has torn down large amounts of sheet rock, trying to get at the fire, which says they thought it it was in the walls, or
      the ceiling. This sounds like an electrical fire, or something hot enough to possibly have ignited the studs behind the sheet rock, so they
      have to tear it down to make sure.
      The firemen are paying no attention to the car, they are looking as something on the wall or floor in front of the car.

      I'm thinking arson or a can of lawn mower gas leaked.

      Another instance of there being a fire on the same city block as a Tesla and the press rushing to report it.

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    4. Re:Not from the car? by icebike · · Score: 2

      A short circuit in the radio for instance can cause a fire that's independent of the battery or charger.

      No evidence the car was actually involved at all. The car roof isn't even burned. They haven't even bothered to open the car door.
      They yanked down a ton of sheet rock looking for fire. The firemen are looking at the wall and floor.

      If anything, its probably the home handyman wiring installed (unprofessionally) to handle the Tesla charging.

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    5. Re:Not from the car? by BasilBrush · · Score: 2

      And it could have been a short in the garage lighting circuit or electric garage door. Fires from those causes would also be likely to happen when the car and owner arrives or leaves.

    6. Re:Not from the car? by Obfuscant · · Score: 4, Informative

      They yanked down a ton of sheet rock looking for fire. The firemen are looking at the wall and floor.

      That's because when a structure becomes involved in a fire, even if it didn't start there, they need to make sure the fire isn't still active in the walls of the structure. It's really embarrassing for firemen to pack up after thinking they've put a fire out, only to get called back a couple of hours later because some two-by-four in the wall wasn't fully extinguished. Also dangerous for the structure owner.

    7. Re:Not from the car? by icebike · · Score: 5, Informative

      Actually I did, And I traced it to the source.

      The first link http://www.thecarconnection.co... got all its information from the second link.

      The first link states "another Tesla Model S has burst into flames -- this time, while parked".
      However his cited source makes no such statement. He added that part all by himself.

      Just looking at the pictures you can tell it wasn't the car that was burning. It was something else in the garage.

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    8. Re:Not from the car? by icebike · · Score: 2

      Yes, but this is a rear drive car, with batteries amidship. There is no damage to the rear or the battery areas. All the glass is intact.

      There is nothing in the front of the tesla that could start that fire other than the power steering assist motor. If that got hot enough to ignite
      what ever was in the boot (front trunk) you could have a small fire, but not one this big.

         

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    9. Re:Not from the car? by geoskd · · Score: 2

      I'm inclined to agree with your conclusion, but really, "seven Tesla employees"? (emphasis added).

      Absolutely, I'm surprised it wasnt more. Tesla is still a relatively small car company, and every employee there has alot of "skin in the game" so to speak. Most likely, the Tesla group consisted of: Two engineers, Probably a battery specialist, and someone familier with the high power electronics. You're going to get the individual who is responsible for the entire engineering team who designed the model. Probably a VP and a product manager as well. Thats five without batting an eye. Thats just the technical team. Now you're going to have someone who is Teslas equivalent of an insurance adjuster, and probably the company lawyer. Given the high profile potential of these cases, probably the companies lead counsel. Thats seven. They could have brought any number of other specialists with them as well.

      Tesla will want two questions answered *very* quickly: First, What caused the fire? Second, can / will it happen again.

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    10. Re:Not from the car? by LordLimecat · · Score: 2

      I still dont understand why the media hates the tesla.

      I would think conservatives (like me) are a fan because Musk is an incredibly successful businessman, free market yadda yadda. He sells a good product, he makes successful companies, he shows how the private market is supposed to work.

      I would think liberals would love tesla because its the environmentalist dream-- its a desirable product that is environmentally friendly AND viable in the real world.

      What grinches are looking at tesla and grinding their teeth, and when did they get such influence in the media? And dont even say "big petro", we saw how much the media loved them during the BP spill and with all the fracking coverage.

    11. Re:Not from the car? by Kaenneth · · Score: 2

      A friend of mine had a house fire whose origin could not be reliably determined. It's not all that uncommon for the source of a fire to be unresolved.

      http://en.wikipedia.org/wiki/C...

    12. Re:Not from the car? by BasilBrush · · Score: 2

      Trouble with your argument is that the posters who criticise Tesla on here are mostly from the right. Just as Jeremy Clarkson, the TV presenter of Top Gear, who criticises Tesla to the point of lying, is a right wing twat.

    13. Re:Not from the car? by BasilBrush · · Score: 2

      I have no idea of his political standings.

      Then you're not British. He writes right wing articles for The Times and The Sun. He criticises Labour Party politicians, and was a Thatcher fan. No one British is in any doubt of his politics.

      Clarkson hasn't said a single thing bad about Tesla since he was caught lying in his first hatchet job

      And so why doesn't his lies in the first "hatchet job" not count?

      As to how I know about other right wingers criticising Tesla, I'm talking about posters here, of which there are a fair number with well known politics, expounded at length over the years.

  2. Disgruntled Neighbor by HaeMaker · · Score: 2

    Oh wait, Canada... Disgruntled Neighbour.

  3. I'm expecting the following... by Mashiki · · Score: 4, Interesting

    That it'll be attributed to a improper maintenance/improper sealing of some kind against corrosion. It's that's the second on the list with cars up here when gasoline leaks aren't the cause. The first is of course gasoline leak related, the third is usually modifications to the exhaust system which cause body frame fires. We use *a lot* of salt on the roads here in the winter, and I mean a lot. It's just so damn cheap since we have mines for it all over the place between Ottawa and Windsor(Windsor Salt for example), and man places are in a locked in 100 year contract.

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    1. Re:I'm expecting the following... by NapalmV · · Score: 3, Funny

      Of course it has. Where would all the spent electrons go?

  4. Same way as other cars by Michalson · · Score: 4, Insightful

    Normal gas cars catch fire every day just sitting in peoples driveways or driving along. It's usually a short in the 12V (regular car battery) system related to one of the electronic accessories. It can happen because water gets in and corrodes a contact (like the electric windows) or heat from a nearby item like a headlamp wears down the insulation or other wear and tear that cars are subjected too. In some cases it is identified as an engineering fault rather then a unique occurance in which case a recall occurs. If you go back 3 years you can probably find at least one recall for each of the major manufacturers to fix an electrical fault that 'could lead to a fire'.

    Having some basic knowledge about car fires makes it clear just how much Tesla fires are about media hype.

    1. Re:Same way as other cars by Todd+Knarr · · Score: 3, Insightful

      Well, if I look at the number of cars in the US (254 million or so) vs. number of car fires per year (152 thousand or so on average), and then look at the number of Telsas sold vs. number of Teslas involved in car fires, the rate for Teslas is a third to a quarter that of gasoline-powered cars. So yes, if a gasoline-powered model had the same fire rates as Teslas and there was detailed coverage of every single fire it was involved in I'd make an accusation of media hype, how else would you explain that focus accompanied by a lack of coverage of models that catch fire 3-4x as often?

  5. Re:Arson? by OhSoLaMeow · · Score: 4, Funny

    Maybe a "hit" taken out by disgruntled Ohio auto dealers?

    Oh no. The Ohio dealers are fully gruntled.

    --
    They can take my LifeAlert pendant when they pry it from my cold dead fingers.
  6. Re:-_- by Reilaos · · Score: 3, Informative

    A entire car line was recalled for catching fire for no reason earlier last year. People got in hi-speed wrecks and caused fires, happening to be in a Tesla. The latter gets coverage, the former gets hardly any. No spin from what I can see here, just a disproportionate coverage on a car that's already in the spotlight.

  7. Tesla not involved [Re:Not from the car?] by Geoffrey.landis · · Score: 5, Insightful

    If the fire "didn't originate in the battery, the charging system, the adapter or electrical receptacle," then the fact that the car was a Tesla is pretty much irrelevant, since those are the things that make a Tesla distinct from any other kind of car. So, this seems to have been a fire in which the car parked in the garage happened to be a Tesla, rather than something specifically Tesla related.

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    http://www.geoffreylandis.com
    1. Re:Tesla not involved [Re:Not from the car?] by tompaulco · · Score: 2

      If the fire "didn't originate in the battery, the charging system, the adapter or electrical receptacle," then the fact that the car was a Tesla is pretty much irrelevant, since those are the things that make a Tesla distinct from any other kind of car.

      Well, that is not the only thing that makes Tesla different. There are a lot more electrical components only present in electric vehicles but which are not related to the charging, battery and electrical receptacle. There is the propulsion system, electrical convertors, motors at (I assume) all four wheels, then there is all kinds of geeky, energy wasting electronic gadgetry to display to the user how much energy they are saving.

      --
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    2. Re:Tesla not involved [Re:Not from the car?] by 93+Escort+Wagon · · Score: 2

      It seems silly for you to draw this conclusion when the source of the fire hasn't yet been identified.

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    3. Re:Tesla not involved [Re:Not from the car?] by BasilBrush · · Score: 2

      The rush to draw conclusions seems to be from those who are pointing the finger at the Tesla. They are the ones not waiting for the investigation. The GP was only responding to those original assumptions.

    4. Re:Tesla not involved [Re:Not from the car?] by bluefoxlucid · · Score: 3, Insightful

      There's one motor, a direct drive linkage (no transmission), and differentials. Hub motors require all kinds of computer control, with associated high chances of fault that could much more easily lead to loss of control or efficiency. Hub motor efficiency is kind of like video poker: perfect play for 3 years straight will net you a profit, absolutely, no question you will beat the casino; the profit is small, and a single small mistake will set you back about 85 years. It only makes sense in a motorcycle, where you have one rear wheel hub motor.

    5. Re:Tesla not involved [Re:Not from the car?] by Anonymous Coward · · Score: 3, Funny

      Ironically, those are all gas-powered in a Tesla.

    6. Re:Tesla not involved [Re:Not from the car?] by geoskd · · Score: 2

      Hub motors require all kinds of computer control, with associated high chances of fault that could much more easily lead to loss of control or efficiency. Hub motor efficiency is kind of like video poker: perfect play for 3 years straight will net you a profit, absolutely, no question you will beat the casino; the profit is small, and a single small mistake will set you back about 85 years. It only makes sense in a motorcycle, where you have one rear wheel hub motor.

      I'm curious what leads you to those statements. What kind of extra computer control do hub wheels require beyond the obvious need for 4x the raw power transistors? What kind of problems would lead to reduced efficiency vs a single drive motor? Do hub motors have a different efficiency profile? something specific to the geometry of a hub wheel?

      I would have thought that having 4 hub wheels would provide an opportunity for more efficient traction control, and better regenerative braking efficiency than a single differentially connected drivetrain.

      What am I missing?

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    7. Re:Tesla not involved [Re:Not from the car?] by mythosaz · · Score: 2

      Is the hub powered?

      ....and USB 3.0 compliant?

    8. Re:Tesla not involved [Re:Not from the car?] by Immerman · · Score: 3, Insightful

      I suspect it's mostly synchronization issues. Trying to get two independent motors turning at exactly the same speed is likely a major challenge, and if the speeds are even slightly different then the car will pull toward the slower one. A differential meanwhile is a relatively simple and well-understood piece of technology that does the same job (uniform wheel power with slippage compensation) more simply.

      Plus the cooling system is no doubt much simpler with only a single motor that's not surrounded by a big spinning wheel.

      --
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    9. Re:Tesla not involved [Re:Not from the car?] by ebno-10db · · Score: 2

      I suspect it's mostly synchronization issues. Trying to get two independent motors turning at exactly the same speed is likely a major challenge

      So how do they do it w/ diesel-electric locomotives? They may have only one motor per axle (not sure), but they have many driven axles. It's the only way for them to get enough traction.

    10. Re:Tesla not involved [Re:Not from the car?] by bluefoxlucid · · Score: 4, Insightful

      In a mechanical system, you can have things like viscous couplers or torsion differentials. The wheels will spin at the same speed, but if one encounters less resistance then more power will move to the others. A single power unit supplies power input, which is then distributed based on the laws of physics as applied to a complex mechanical system. Gears and metal poles are lossy due to heat from flexing, compressing metal; viscous couplings are obviously more lossy because they're non-solid and thus the working fluid is experiencing far more deformation than metal.

      In a hub layout, all those inefficiencies go away. Computers perfectly apply the correct amount of torque at the correct rotational speed directly to each wheel. For a given RPM, the motor will simply spin at no torque unless there is resistance, at which point it will draw more power to retain spin speed.

      Unless... your calculations are slightly wrong. And the motors have loss by heat--which they do. And the computer has to calculate when to back off power to one free-spinning motor which is now heating up and spinning the wheel too god damn fast, but only after taking a sample.

      Hub motor efficiency gains aren't ungodly massive; they're small, and they require perfect operation. They also require additional (powered) sensors and computer number crunching, rather than passive mechanical systems which simply cannot function in any manner besides "distribute power correctly" or "fail completely because the system is broken". Drifting sensors, poor sampling, and just the need to get enough of a sample to make a statistically significant analysis and adjust power output per wheel all rob hub motor systems of their theoretical maximum efficiency. The first of these is of particular practical importance: it's extremely easy for this system to be out of spec and inefficient without the end user knowing or caring. The rest are engineering challenges.

      All of these potential failures are multiplied by the number of hub-powered wheels. An entire drive train system--a hub motor, its connection to the wheel, sensors, power connectors, regenerative braking mechanisms, and so on--must be duplicated four times to get all-wheel drive. With a single power unit in a mechanical system, you only need to build one drive train, which is simpler and only needs to be incrementally improved in very direct and simple ways. No improving computer code for the average case while trading off the better case; no attempting to get sensors to get more precise data, then trying to factor that improvement into the rest of the control system. You use better alloys, better machined gears, you use what you learn from further research to tweak the design so that it couples and transfers power more effectively and reacts more quickly and immediately to slippage.

      The big driver for hub motor vehicles is all the things you can do in theory. Modern traction control and ESC applies braking force to individual wheels, whereas you could just back off the hub motor... or apply braking force by the regenerative brake. But that begs the question: aren't you using the same computer control programs for regenerative brake applied traction control as you are for hub motor regenerative brake traction control? And then of course those benefits essentially come down to the corner case of driving in terrible conditions, which is inefficient as hell anyway--and your efficiency gains are minimal.

      Lots of funny theory, lots of "with X we can Y", as it has always been. One of the big pushes with Firewire was that we were going to have revolutionized home entertainment: you would have abstract equipment with IEEE1394 ports, plug a speaker into the VCR, plug another into the TV, subwoofer into a receiver deck at the back of the room daisy chained to the DVD player, and daisy chain rear room speakers off that, and all these devices would find each other through these arbitrary connections and unify themselves as your home theater. That was being heavily advertised in home theater shops for a while, but it never happened. All these things you should be able to do with your iPad never materialized. The XO Laptop hasn't met its potential yet--it has revolutionized nothing. Same with hub motors.

    11. Re:Tesla not involved [Re:Not from the car?] by Anonymous Coward · · Score: 2, Insightful

      They have one motor per axle, which eliminates the need for perfect synchronization (if the axles run at slightly different speeds, that's just a loss of power, not control).
      They also run on rails, so smaller de-synch issues that would cause a car not to go straight or have difficulties cornering result in nothing more than slightly more noise for a locomotive.

    12. Re:Tesla not involved [Re:Not from the car?] by Immerman · · Score: 4, Informative

      First AC got it almost perfect - as long as you have a powered axle the wheels on both sides spin at the same speed and there is no tendency to "pull" unless they're improperly aligned or your wheels are different diameters. As multiple powered axles still all push straight forward. The only part AC got wrong was that barring slippage and assuming your wheels are all the same size, every single axle must will turn the same speed.

      It's like a team of horses pulling a load - so long as all the horses are in one line you can mix hard workers and slackers however you like. Some will pull harder than others, but they all move together at the same speed. If you have two rows though, then you need to be careful to balance your horses - put all your slackers on one side and you'll start going in circles.

      --
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    13. Re:Tesla not involved [Re:Not from the car?] by EETech1 · · Score: 2

      Then how do all of the millions of CD and DVD players out there manage to properly play the discs, or VCRs play tapes without the TV losing sync?

      Matching motor speeds is easy, even without encoder feedback. If a motor is turned at a different speed than it is driven it distorts the waveform going to the motor. Modern drive electronics can sense that, and adjust accordingly.

      I've worked on machines that produce fabrics at 10 - 15 feet per second, and they contain multiple motors that are perfectly synchronized. If not, you would quickly have piles of fabric on the floor, or huge gobs of fabric getting wound up in the various stages of the machine. Getting them all tuned so they change speed at the same time takes a little bit of know how, but once they are properly set, they run trouble free.

      Modern control systems are that good.

      I've seen systems demoed with motors that have large triangular, square, and pentagon shaped metal plates mounted on them with slots cut in them barely wider than the plates. They start and stop so the plates can pass through the slots in perfect synchronization. You watch hypnotized as the different sided plates ratchet through each other at about 10 RPM, then the thing ramps up to a blur, and you watch in amazement as the other half of your brain tells you to run like hell in case one of those plates misses the slot, and the whole thing goes BAM, and comes flying apart.

      Mitsubishi had a multi-master synchronized motor demo with some small servo motors mounted facing shaft to shaft about 3 inches apart driving parallel metal discs with pieces of lead from a mechanical pencil stuck through tiny holes in both of them. They had little levers mounted above the discs so you could push down on them to slow down or stop the discs. The goal was to try and get them out of synch enough to get the pencil lead to break while they went through a little cycle of ramping from about 50 to 1000 RPM. If you broke the lead, you got a real nice Mitsubishi mechanical pencil. I didn't see anyone manage to get one though.

      Trade show demos are the coolest:)

      I'd imagine you would have to allow them to NOT be in synch enough to go over bumps without creating additional jerkyness in the ride.

      Cheers!

      (&BuckFeta)

  8. Re:g0at pen1s by easyTree · · Score: 2

    My brain is melting trying to read what you wrote - stop sniffing gas/petrol - start licking electricity, it's the vehicle-fuel of the future :P

  9. Important question by Andy+Dodd · · Score: 2

    Was the driver a smoker?

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  10. Re:Was it the car at all? by BasilBrush · · Score: 2

    The front trunk area is mostly storage. Under that there is an AC unit, electric power steering, and an air fan (for cooling the batteries I guess). Presumably at most, the air fan was in operation as the car had recently returned and was parked.

  11. Re:Home owner declines Tesla assitance? by qparadox · · Score: 3, Insightful

    http://business.financialpost.... When Tesla offers to pay the owner of the car for the damages to his home, the guy declines. Now, call me stupid, but that's a little weird no?

    Its not really that unusual. He likely has fire insurance that will cover the damage to his house and would rather deal with the insurance company than directly with Tesla. The insurance company can send the bill to Tesla and deal with the hassle, administrative details and lawyers, rather than the car owner.

  12. Spontaneous Vehicular Combustion? by Arancaytar · · Score: 2

    In fact, the Toronto fire department says the fire didn't originate in the battery, the charging system, the adapter or electrical receptacle since all of those components weren't touched by the fire.

    Or maybe insurance fraud, who knows.

  13. Re:My Advice to Tesla by BasilBrush · · Score: 4, Insightful

    "Loudmouth investor"? Do you mean the Tesla CEO, Elon Musk? CEOs are supposed to speak for their company.

    You seem to have an axe to grind.

  14. Re:-_- by boristdog · · Score: 4, Informative

    My Ford truck burst into flames after sitting for 3 days in my driveway a couple years ago. Fortunately my wife was working from home and called the fire dept. Saved my house.

    I talked to several lawyers after this and what they told me was scary:

    1) ALL car models can burst into flames while not running.
    2) Many lawyers have their entire practice base on car fires like this.
    3) If no one died or was seriously injured, they won't even take the case. There are too many lucrative death cases from this sort of thing for them to bother.
    4) EVERY one of these lawyers said they would NEVER park any car inside a garage attached to their house. One even said he fought his fancy HOA for the right to park in his driveway instead of his garage. He won, because he had the evidence.

    I am taking that advice.

  15. If it was related to the car... by Dastardly · · Score: 2

    Some rare, but possible causes if it has anything to do with the car.

    FOD... (Foreign Object Debris) - shorting power to ground anywhere. Doesn't take much especially on a circuit board somewhere, rapidly heats up and melts solder creating and even bigger short and more heat until fire.

    Dendrite formation - Very rare and probably requires more than 4 months to happen, but certain components on a high density BGA array the solder can form tendrils towards other solder balls. As the dendrites get close to each other they will short and break kind of like a fuse, but eventually it can become big enough to hold and sustain current generating enough heat to start the solder balls melting driving more current and heat until fire.