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I live in Northern California. Several hours north of the Bay Area. Today I left my car, a Honda Pilot, out in the parking lot with the two front windows open, four inches each. It was parked on standard black tarmac. I was gone eight hours and came out to this :
Dashboard Thermometer[^]
I felt like the Wicked Witch - "I'm melting, I'm melting..."
Damn.
"They have a consciousness, they have a life, they have a soul! Damn you! Let the rabbits wear glasses! Save our brothers! Can I get an amen?"
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I'd be worried about the temperature specs for the fifty-odd computer chips that the car needs to work.
I wanna be a eunuchs developer! Pass me a bread knife!
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The automotive temperature range is quite close to the military range (-40C - 125C instead of -55C - 125C), so I wouldn't worry to much for manufacturers that has been in business for a while. They have learned not to cheat, it's getting costly in the end.
BTW, that's why Tesla is having so much problems with their screens. They bought commercial ranged screens (0-70 C).
<edit>More on that here: Tesla's Screen Saga Shows Why Automotive Grade Matters - The Drive[^] </edit>
modified 28-Aug-19 5:45am.
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Tesla => Lithium something batteries! They don't like it that hot at all, nor do they like it cold. I wonder how many cells die quietly and how many go up in flames.
One of my batteries died recently. In the air. The cell must have shorted out and dropped to 0V. The remaining five cells were still enough to keep the helicopter in the air, but it became a little sluggish and tired.
I have lived with several Zen masters - all of them were cats.
His last invention was an evil Lasagna. It didn't kill anyone, and it actually tasted pretty good.
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CodeWraith wrote: The cell must have shorted out and dropped to 0V
Luckily that didn't happen when it was fully charged (approx. < 40% charge depending on chemistry), or it would have caught fire.
When it comes to the batteries on Tesla I wouldn't worry to much, they're extremely well regulated. There are spare cells in the pack, and the charge is always kept between 10-90%. (but shown as 0-100)
If they get to hot, the car goes into "limp home mode", which is the reason there are no official time around the Ring for Tesla. They can't make a whole lap at full speed. Well apparently the Model 3 can make in in under 9 minutes which is amazingly slow considering all the power. (An unmodified VW Transporter rental van (150 PS) can do it in 9.58)
And if you fast charge them to many times (> 60 times according to reports) the charging speed goes down. For good.
Also for safety. (read, they don't want warranty replacements)
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The battery was four years old and had spent a few hours in the air. Until then it had never shown any signs of aging. All cells were balanced within 0,01V and it always reached its full capacity. Usually I don't drain them below 30%, giving me a small reserve before I end up below 20%. I never really needed that reserve, but that's a good thing. No dog ever tried to get that funny flying thing that had just landed, nor did any daddys send little boys to go take a good look at it. Should something like that ever happen, I'm glad to have enough power left to take off again and have enough time to yell at someone.
Anyway, the batteries all were in good shape, but this last time the cell that shorted out lagged behind while charging. I tried to bring it back up with a longer balancing session and after that everything looked okk, but obviously that did not really work very well. You can treat these batteries as good as you possibly can, but they will always be a little volatile.
I have lived with several Zen masters - all of them were cats.
His last invention was an evil Lasagna. It didn't kill anyone, and it actually tasted pretty good.
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That's good to know, thanks.
I wanna be a eunuchs developer! Pass me a bread knife!
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I work in the automotive industry. Do not worry, cars can cope with these temperature ranges. We run tests in the Death valley (extreme high temperature), in Siberia or in Sweden (extreme low temeprature), in Ireland (rain conditions). We have climate chamber tests for all ECUs separately, plus for the car - which is quite interesting sometimes, since some irrelevant parts will indeed freeze or melt. The most severe specifications concerning temperature are for the air conditioning, since it must help you not to die from high temperature or to freeze if the car breaks down in some unfortunate area.
What we consider normal temperature range in the cockpit are -25°C to 85°C. The standards for the engine room are -40°C to 125°C.
So all is good - Unless you buy a Tesla, which is basically a tablet with some mechanical parts assembled around it. It's like with electronics devices, do not buy the latest hardware, wait for version 2.0. For Tesla, wait several years.
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My dad's worked as an auto mechanic for over 40 years, so he's seen first-hand the transition from "everything mechanical" to "everything electronic". His opinion...it's not necessarily the operational range of temperature that causes problems for the electronics in a car, it's the exposed wiring that get corroded and break or short out.
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My first car was a Citroen-2CV[^] (probably unknown to Americans  ) that had black skai®[^] upholstery.
It was a nice experience sitting on that with your shorts on during a holiday in Spain !
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Quote: (probably unknown to Americans Smile | )
True, But wasn't one of those used in an episode of Mythbusters, Fancy interior!
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Built according to the principle that what doesn't exist cannot break.
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Certainly true for the carosserie of the 2CV, at one time I stood with the trunk lid in my hand which had rusted off.
But in it's defence I have to say the chassis was quite heavy and sturdily built
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I don't know why, but the first thing that came to mind was Paris[^] 
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Apparently we have differing opinions on whats hot.
Salma is hot!
That Paris makes me think of this[^].
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I didn't say she was hot, she just always said "that's hot" and that was about the smartest thing coming out of her mouth.
Not a fan of Salma either (in terms of Hollywood beauties).
Nicole Kidman is just a year younger, which still makes her pretty old, but dang she's still looking good 
Anyway, the real hot ones were born at least 20 years later 
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Sander Rossel wrote: she just always said "that's hot"
I wouldn't know that. 
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"YAWN"... Texas.
".45 ACP - because shooting twice is just silly" - JSOP, 2010
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You can never have too much ammo - unless you're swimming, or on fire. - JSOP, 2010
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When you pry the gun from my cold dead hands, be careful - the barrel will be very hot. - JSOP, 2013
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Shouldn't that be "y'awn" ?
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Had to 5 that one.
".45 ACP - because shooting twice is just silly" - JSOP, 2010
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You can never have too much ammo - unless you're swimming, or on fire. - JSOP, 2010
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When you pry the gun from my cold dead hands, be careful - the barrel will be very hot. - JSOP, 2013
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If you rent a Tuxedo, do you have a vested interest?
Sent from my Amstrad PC 1640
Never throw anything away, Griff
Bad command or file name. Bad, bad command! Sit! Stay! Staaaay...
AntiTwitter: @DalekDave is now a follower!
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Well, the rental company has an interesting investment...
Freedom is the freedom to say that two plus two make four. If that is granted, all else follows.
-- 6079 Smith W.
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I cannot find a suitable reply.
"If we don't change direction, we'll end up where we're going"
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Only if it suits you.
When I was growin' up, I was the smartest kid I knew. Maybe that was just because I didn't know that many kids. All I know is now I feel the opposite.
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