Windscreen cracked from preheating the wrong way

[@Sammyzuko]

Crack from running the heater.....c'mon man, the heater didn't cause that. There was obviously a big rock chip there and the temperature difference caused the crack to spread.

[@Evenjor]

Sammyzuko yuuuup agreed

[@vitchr]

Should be indeed

[@ApacheLongbowx2]

If you had gone to your insurance company and told them about those cracks before today's "accident" then you would get the windscreen repaired for free, or in worse case pay a bit for a new one (like 10% of the price)

[@sida5092]

It could of. I broke my houses window on a cold day when the sun was beaming through my window, so I put a giant pillow against the window so i would't get glare on the TV. About an hour later I hear a large cracking sound, moved the pillow and a massive crack was across the entire window; which I had to then replace :/

[@mibars]

My cousin has broken his windshield accidentally when he came up with brilliant idea to run propane camping stove below windshield as his blower died in freezing weather...

[@AnanananChin]

It hurts to think about changing the entire huge windscreen...

[@ryans413]

Could probably get the window crack filled instead of replaced

[@arshamskrenes]

That’s why I pay $15 to fix rock chips on my windshield, because otherwise it will crack with high thermal stress (I’ve seen it with heat in winter and air conditioning in summer). I don’t think this would have happened without the rock chip, especially since I’ve driven in -30°C with the cabin at 23°C. I’m sure that’s more thermal stress than this demo.

[@Steinegal]

Arsham Skrenes funny thing is that rock chips are free with most full and half coverage insurance. Replacing windshield is usually 2000kr($250) when you have full insurance

[@esunisen3862]

$250 ? You forgot a 0 i think :D

[@arshamskrenes]

Magnus Rydningen even better. My insurance doesn’t and my windshield deductible was increased to $500 since the province I live in doesn’t sand the roads, they gravel it 🙄

[@arshamskrenes]

Esunisen no, he’s talking about a $250 deductible. Insurance company pays the rest.

[@joshuacornell6667]

I have h ad to replace the wind screen/shield once in two vehicles, the insurance paid for it both times and I had not had to pay a deductible for either.

[@MattyMkFly]

By chance in the middle of the crack it looks like there may have been a ding already? If so that may have been more at fault than just the heat from the vent.

[@mattaut88]

absolutely. the glass was weakend before with some major damage. that should have been repaired at a carglass shop immediately. water and dirt can of course get into the hole.

[@joTHEgreen]

Yep, it is not all your fault Björn. Please do a video after repair, telling us what was the cost.

[@Avean]

Looking at his video before this you can clearly see a chip in the glass there from before :)

[@kristianauestad816]

If you have insurance with partly or full coverage (not liability), the deductable for a window replacement is 2000 NOK (about 250 USD) in Norway for most insurance companies, and the insurance price will not change. Everyone in Norway will use their insurance when changing the windscreen, if they don't have liability coverage only that is.

[@paulyh4531]

Deff looked like a stone chip on glass that's weakened it to me .

[@gaijin46]

Hello from Chicago. The technical term is "stress relief." The glass cracked due to what others have said: you already had a chip in the windscreen and the thermal stress (expansion or contraction depending on temperature) caused the crack to propagate across the surface. This time not Tesla's fault.

[@curtspray]

curtspray1 minute ago (edited)Just happened to me this morning Tesla Model 3 cold in garage in the 30 degrees F use my phone app to warm up the inside to 70 degrees and snap bottom center cracked no marks no impact area. Pisssssssssssssssssssssssssssssst foot long now and bowed.

[@JhonF212]

same for me@@curtspray

[@geraldnaruto]

Im a safelite AutoGlass technician, from looking at the crack i can tell you that you already had a chip on the windshield, probably from a rock while driving, than the temperature change made it spread, at safelite we always tell our costumers to bring it in for a repair asap to avoid things like this. So ya, you already had a chip on it.

[@nottheone1357]

If he had Safelite fill the chip properly this would not have happened.

[@skakamj0lk]

lol and lol. You have no way to prove your claims either way. Glass is unpredictable under quick temperature changes and looking at the damage alone is not evidence enough. I agree a chip will increase the probability but it doesn't exclude the chance of it happening to an undamaged window. This is just the nature of safety glass.

[@nottheone1357]

Key words are "quick temperature changes" The defrost on a car does not create a rapid change in temp and that is what it takes to crack a good windshield. Pouring hot water on any windshield will crack it but turning a defrost on high should not unless it is defective.

[@skakamj0lk]

Don't be silly, you have nothing to back up that argument except your own perception on this. What medium you use to transfer the heat (water/air) is not the primary cause to why this can not happen when using a defroster on the windshield. Products with manufacturing defects can be found everywhere, this might be an example of it. And of course the defroster can output enough heat to crack a windshield. The car is plugged and has a very powerful heating source, more then enough to crack a windshield. We just saw it happen in this video in fact.

[@Chilukar]

Actually the first thing I thought was that i used to boil a kettle and de-frost my windscreen in my old renault clio many years ago. Really bad idea I know, but I got away with it ... also it was in the Uk so was only -2 or so, i'm pretty sure Norway is colder :P

[@slcuervo]

Bjorn, the ding in the middle of that crack was there before, I assume? Did you have it repaired by injecting that resine, or did you leave it like that? Becaus that looks like the reason why the windshield cracked, not the way you preheated...

[@Serenoj69]

My question toot. In The Netherlands they warned me for this: repair it with resin or in winter it will crack the whole window when you try to defreeze the window.

[@OriginalThisAndThat]

I think hes saying, he blasted warm air and thats not a good idea if theres small cracks from stone hits. Temp changes do that. Even in hot summer day if you use cc very cold

[@devinthreethousand]

It looks like there's an impact point already... and the crack just spread from the heat? Am I missing something? I don't think the windscreen could have cracked just from heat alone... I precondition my Ampera all the time without wiping the windscreen and have never had an issue.

[@mattaut88]

you are right. it was harmed before with some stone chip. would've been better to repair that at a carglass shop.

[@annoyedok321]

The rock chip definitely created a weak spot, but I've driven with rockchips for years and have not had this happen. It's likely that the size and shape of the windshield or temperature of the heater also had a impact.

[@curtspray]

curtspray1 minute ago (edited)Just happened to me this morning Tesla Model 3 cold in garage in the 30 degrees F use my phone app to warm up the inside to 70 degrees and snap bottom center cracked no marks no impact area. Pisssssssssssssssssssssssssssssst foot long now and bowed.

[@d7mysterio7]

I dont know Bjorn. It looks like the windshield may probably had a prior chip. The heat probably exaggerated the tiny crack, then spread. But I could be wrong. Sorry about the crack in your windshield.

[@how.to.crypto]

kzbin.info/www/bejne/imaqZIGFhatkd80m55s if you look in his other video here at the 2:55 time you can see the rock chip

[@curtspray]

curtspray1 minute ago (edited)Just happened to me this morning Tesla Model 3 cold in garage in the 30 degrees F use my phone app to warm up the inside to 70 degrees and snap bottom center cracked no marks no impact area. Pisssssssssssssssssssssssssssssst foot long now and bowed.

[@diZrupt0r]

Looks like there was a previous (non-repaired?) rock chip in the middle of the crack? So my guess is that the rock chip was the root cause here

[@jyjyutube]

Uncle Bjorn, thanks for your great sense of humor. May you be blessed.

[@DoughBoy45]

Lmao, “aren’t you an engineer? “. “Yea yeaaaa” 😂

[@icepl4net]

3:09. "i can still drive around like i stole the car" hahaha

[@chipmurphy9827]

icepl4net lol future

[@GoProDude50]

Now please make a video going through the process of changing the huge windscreen and how much it costs.

[@FuchsHorst]

IiroMikola let‘s guess 😉 my guess is: 72000 NOK/ 7500€

[@bcj3638]

My Guess is: Warranty ;)

[@aasrt2]

My guess is it doesn't need to be changed, since it's a small crack

[@Nolagadh]

Maybe his insurance is covering the bill?

[@optimusboy1]

IiroMikola i would say warranty or insurance... But the again i live in the states in sunny, will melt you face florida

[@mastero21]

The crack was caused because there was a chip in the windshield that is visible on the video. The sudden increase in the temperature difference between the inside and outside of the car then caused the pre-existing chip to expand and cause the crack. From a Canadian.

[@atypicalhooman]

Your sense of humor is great

[@lappen71]

Sprickan kan inte bara uppstått genom värme utan du måste haft ett stenskott som hjälpte till.

[@pegefounder]

You just demonstrated the main problem of photovoltaic / thermal combinations. The idea is to take the heat from the photovoltaic on the back side to use it with a heat pump. But full sun shine heats the front glass up to 80 degree Celsius and on the back side are the cooling pipes with just 10 degree cold water. This can cause problems like You just showed.

[@clarktjl1]

Your videos are fantastic! Very cool insight into Tesla ownership! You have a great attitude towards experiments 🎉 Keep up the good work 😊

[@nvgwd3r]

IT CRAACKSSS! SHeeeeeeiiiittt! I love this guy 😂👌🏽

[@wolfi1078]

Don’t worry. You are not stupid. Soon or later the windscreen cracked anyway, since you had a stone impact, which is clearly visible. Smart repair, quickly after the “accident” can avoid such cracks, but still without warranty. I had such an issue, when the car was parked outside at a hot summer day and it suddenly started to rain. It was just bad luck.

[@bernhardingebrigtsen877]

Ser ut som du har fått en steinsprut tidligere som har forårsaket dette :) Takk for bra filmer!

[@tage202]

I did the same this morning. Funny thing is I done it before with no issues until today.

[@andrewanderson6810]

Soon as I got my Model X I put ClearPlex on it for peace of mind. Now I can drive without worry of rocks hitting my windscreen. You should check to see if it is sold were you live. When you get your windscreen replace put it on.

[@salisbury1944]

Martin in Gothenburg, Sweden. Swedish caravan centres sell motor vehicle fuses with telltale LED's that light through leakage across them when the fuse blows. Saves hunting for the broken fuse... It's a one time expense to replace all the fuses on your vehicle and buy a few in reserve. Only the smallest fuse, 2.5A, is not available with LED telltale...

[@mckperera]

Yes the stone chip probably allowed the crack to occur in the first place. Get an original glass. When I replaced the glass of my BMW it was never the same noise levels increased, reflections increased. In the UK windscreens are cover by car insurance. Get clearplex coating in future

[@coast2coast00]

In high school, my friend threw a water balloon at a truck that was sitting in the hot parking lot all day, and the windshield cracked from the temperature difference. If you aren't getting it fixed you should test if putting clear nail polish in the crack will stop it spreading. you can get cheap kits from china for like $5 that will make a stone chip invisible, but they say if you put nail polish, let it dry and scrape the surface with a blade, it works as well.

[@MorganTrvolt]

With snow on the windshield, the termal difference when you get a few clear spots that are warm (clear of snow), and snow other places making those part 0⁰C, the thermal stress will make weaknesses like that chip there appear.

[@Steppenkater]

The real reason for the crack was the stone chips. You have at least two of them and you didn't let them repair. That was the real fault. Next time when you get another crack you will tell us, don't drive on humpy roads ;)

[@fullselfdriving366]

looks like you had a stone chip. We always preheat the car with frost or ice, but only add the "windscreen" heater after pre-heating via app has been done.

[@KirbyVandivort]

I think you needed some of that Semi glass.

[@gralen]

I done it for almost 40 years and never have a problem. The trick is you take the snow off with a brush or a broom.

[@RedBearAK]

Definitely propagated from an already existing chip that weakened the tempered surface layer of the glass. Millions of people preheat with high heat on the windshield and ice on the outside every day without having this happen. A lot of times hard ice can't be removed without some preheating. There's nothing abnormal about defrosting the windshield like that.

[@symirabi]

I always pre-heat my Nissan leaf in winter time, and that puts full blast on the windshield - nothing on the feet. I have never had anything like this happening to me. You obviously had a very weak point where that rock hit. I would claim that you were extremely unlucky here. If you don't have any significant damage on your glass, you should be able to do what you did, without damages.

[@justsomeguy934]

I'd certainly be happy to contribute to fixing the windscreen, you saved me from making the same mistake. I could easily have used that setting!

[@NicolasRaimo]

As everyone said its the stone chip but if preheated the normal way it more than likely wouldn't of cracked as the heat isn't full on windscreen.

[@starlighttesla9672]

I like your humor. Thank you for showing how not to do.

[@cssplayer91]

2:09 it cracks.....shiiiiiieeeeeeeeeetttt!!😂😂😂😂😂

[@edharris5881]

This speaks to the power of the Tesla cabin heat system! lol

[@AfroMyrdal]

1:17 listen to your uncle bjørn kids, crack is not good for you!

[@funafter5081]

Bjørn...you're not stupid...you were using the defroster as it was designed. I agree with the others here that your issue was with that rock chip. Now you know!...and I'm not talking about Zac and Jesse...lol! Cheers, John ;)

[@marcelgoettel]

Yes there was a big rock chip! In the "How cold battery affects charging speed" video you can see it at 3:33 .That caused the crack. In some countries insurance pays the rock chip repair witch prevents the windscreen from cracking and it looks better.

[@goonable2]

It was definitely the stone chip in the center of the crack that caused it. The preheating defiintely accelerated that crack but, over more time, just driving around on bumpy roads would have eventually caused that crack as well.

[@LasdilElizaga]

Just my own opinion. Remember when you fill a glass with hot water, empty it and immediately put a cold water in it, it breaks. That’s because glass is not a good conductor of heat and my guess is that the windscreen had a lot of tension going on - rapid heat and cold from both sides. Or I might be wrong :)

[@skakamj0lk]

lol @ all the Tesla fanbois (and others) saying this didn't happen from heating the window. It totally did. The surface of tempered safety glass is under high stress (this is how safety glass works) and can behave very unpredictable. A rapid temperature change WILL cause this. Try it on your own vehicle if you don't believe me - it's just a question of applying enough heat quickly enough. A stone chip will increase the chance of this happening, but an undamaged window can crack pretty easily too. Just as shown here...

[@inox1ck]

What if you have 3 mm of ice on the windshield? A heated windshield helps a lot, always address the windshield chips if you don't want to replace it. No matter what you do, because temperature variation is inevitable, eventually the windshield will break but you can prevent this by using a special resin to fill the gaps left from pebbles impacts.

[@Bercik87]

Now you know guys did that too. But they were fine. So you must've probably overshot it with HIGH on windscreen. Well that's actually one of best features of this car. You can heat it up without having to have webasto. Still envy you even with cracked window ;)

[@HotelGolf82]

This is because of the impact from a rock previous to this event. The same happened to me, but on a hot summerday when I decided to wash my car with rather cold water. My windshield cracked from side to side, which is due to tensions in the glass that tend to break from a stones impact and out.

[@stewartgrindlay9760]

“Listen to Uncle Bjorn” is my new favourite saying

[@jyjyutube]

LOL!

[@GameThroughs]

It's from stone, not from heating. There's a hole of stone chip, at some point when you driving stone picked up on your windscreen, and heating caused a glass to break at that point. It happened to my car also and it happened on summer, not preheating. I got stone chip like that in the middle of the windscreen and when it was really hot, it was 50c in the car one day i got inside and saw that my windscreen cracked at point from bottom to direction through stone chip, next day cracking continued all the way to top of windscreen.

[@MCA842]

The heater is not the problem. When you have a star in your windscreen and its cool temperature outside and you set the heater on then your windscreen is going broken. If the windscreen have not stars then you can allways set your heater in highest stand.

[@eduardoig17]

I love living in a place where I don’t have to worry about snow on my car. And even if I did live in a place like that I would try to get a place with a garage.

[@snuups]

If you pour hot water over the windshield it can crack even without any defect. But the heater should not sause such a damage.

[@benedikt5974]

It looks like the screen might have been damaged before. There is a round damage along the crack that looks like a stone that hit the screen. Without such a damage a screen should not crack even by a lot of heat.

[@GMahlerVerehrer]

You have to be the happiest person in the world that has broken something. :D

[@andrewv6118]

And when the windscreen will be replaced, if they use metal knife tool to cut the adheseve betwin glass and metal frame, it's going to scratch that metal frame inside and outside, and in time the steel will rust, in years can rust through and rain inside around the windshield area. Because it's not their car, they have to be quick and do a large no. of "clients". and that rust , in case of an accident weakens in some degree the structural integrity behaiviour in case of an accident ! (beside the aestetics looks)

[@MrSupercar55]

You have an awesome battery in that Tesla.

[@rcforrichard6245]

You can have the stone chip filled with epoxy window fix product. That may have helped before the cracking.

[@SCAREFACE3456]

the crackering is a normal effect with all glasses, this is because very high temperatures differencies in a short time (outside cold, inside hot)

[@gertdehaan4005]

Well, you know what they say: Better a crack in your windsceen, then a windscreen in your crack...

[@station240]

Differential temperature means the glass will flex, but the weight of the snow on it prevents that.

[@EntsoKantelo]

Sorry for the trouble that you make on yourself. Actually this is very good video "How you shouldn't clean the snow on you car" 😉.

[@manwithaknife4642]

They should offer the windscreen from the Semi and frankly a bulletproof option would sell too. It has mondo power to weight...

[@senagangbe5804]

I've preheated with 10cm of snow on top at -25 with no issues. It was the prior chip that caused this

[@DasArab]

That is why you should always get stone chips sorted before winter.

[@davetravels9273]

Yup this has happened to me before. An non-repaired rock chip + snow +heat = crack. However, this doesn't happen if the windshield is undamaged.

[@Cornelius87]

I thought that's what that option was for in every car? I always turn the defroster to the hottest setting when I'm trying to melt ice. I know people say it's a bad idea but I've also poured warm water directly on the windshield for many years and never had a problem. I guess it's just a matter of time.

[@terrancevangemert7508]

you had a stone chip before hand and when you add heat which changes the expansion and uneven stress.. SO.. Fix the stone chips so you do not fracture future windshield..

[@TrulsBekk]

I actually thought of this earlier today, ironically, when I watched your previous video. Like, how bad is it for the windscreen that it is blasted with full heat immediately? This hasn't really been an issue before EVs came along, since ICE cars can't blow warm air before the engine has heated up.

[@TrulsBekk]

TsLeng Oh, well that's new to me.

[@ukpm]

You definitely had a stone chip on the windscreen. The thermal shock has forced it to open a crack. Heating alone wouldn't crack an otherwise healthy windscreen glass.

[@alsin1597]

Okay, Im telling you what happend. He has a crack from any little stone on the highway before heating the windscreen, so difference in temperatures rise the crack. Thats it. If you have a clear front screen, heat it, why not.

[@rkan2]

You could get the crack drilled and save the glass, but I guess Norwegians would have insurance.

[@Holdfast]

Here in Canada at least a stone chip like that will always eventually spread if not repaired. I think you just accelerated the process.

[@ehatfield2000]

First video of yours I’ve seen and I love u already

[@wdbldr67]

I agree with other posts. A rock chip combined with the temp difference but even then there must have been quite a bit of strain on the glass ie to much adhesive in one area and not enough in another causing ever so slight pressure. Don't know if my weather is any worse than Norway, probably not. Have never cracked on in the extreme cold 0deg F. but Slam a door in very hot weather combined with a rock chip and is Safelight to the rescue. (and no that was no a plug:)

[@williamarmstrong7199]

That looks like it propagated from a small stone chip. I blew out the back window of a Fiat Doblo on the motorway using the rear heater. It was covered in about 1" to 2" glass ice and snow before i put the heater on. It was too thick to scrape or chip off. The centre of the glass cleared perfectly.. leaving over 1" ice around the edges.. then Bang! No rear window it dropped out onto the motorway. 1 very cold drafty 100 mile drive home with no rear window.

[@nicolasterzani9017]

I think the lesson here might be another one. Don't drive too close to other trucks or cars trying to save energy, you will have more chances to get a stone into your windshield with consequent damage.. lol

[@thetrainroom]

1. It looks you had already a damage in the middle of the crack. I had that this summer, than I parked my car in the sun in Fredrikstad for two hours, and the crack got 10 times larger. 2. I only need 55 s to remove the snow and ice from my car.

[@Mainachtsmann96]

When you get told in school what might happen if you would spill a bucket of hot whater on a frozen windshield... So something like this seems not to be a very good idea ;)

[@tesla.8410]

You also shouldn‘t wipe big chunks of snow and ice off your windshield. You‘ll ruin the wipers. But I can‘t believe you actually cracked the windshield.

[@lanaliong3712]

Bjorn Nyland if the chip had been repaired before shocking the windscreen you would have been fine. In Norway does insurance give you free chip repair ! ? It's best for all, you and the insurance How are the Hakk8 studs holding up when driving them on dry roads ?

[@lanaliong3712]

Btw Bjorn Nyland, windscreen replacement in the USA IS so reasonable we usually do not use insurance to replace one, w ejust buy them if they are cracked like yours being repair, something like 200 US DOLLARS On a side note, if you are serious about staying in the USA for all or part of the winter, for warm weather, myself and our friends have an offer to make that possible if you and Ann -Marie are up to it! Let me know ?

[@hayrettin545]

So sorry for your windscreen man, hope your insurance covers it, by the way how much does the windscreen cost do you know?

[@fazytech2169]

mt.Kilimandjaro its around 2300$

[@esunisen3862]

Probably over $2000.

[@papsliko]

With insurance usually around 150 usd to replace the windscreen. This is in Sweden, I am guessing its around the same in Norway.

[@Bastyyyyyy]

And actually, that $880 replacement cost (+ install) is a fair bit cheaper than you’d expect, especially given the size of the X’s windshield. Source: Tesla Motors Club Forum

[@rospincasocl3741]

You know... probably it had something to do with the rock chip you already had? I mean... maybe?! I'm stunned NOBODY mentioned that possibility yet...

[@Branman345]

Hey it’s possible this happened. I live in a warm climate and if you wash your car on a really hot day the Temperature change can crack it. I know this could happen anywhere, but where I live it’s extreme heat .

[@LanceMace]

Good rule of thumb, always get rock chips fixed! This wouldn't have happened, I hope without the rock chip!??

[@Cypersm]

The window was already bad. With a perfect window this doesn't happen.

[@Entrepreneuri]

I always heat my car this way. I live in Finland and climate is similar to Norway. Have had cars 20 years and never had windscreen cracked from heat only. I do have cracked one that had a chip on it...

[@Nick-dk9pd]

in some countries like the Netherlands the car would not pass the periodic inspection (APK) with a cracked windshield this means you are committing a crime if you do drive it.

[@MauricevanHees]

definitely to do with the chip on the outside... :( bad luck.. but thats what the carglass commercials warn us about. You can hear it crack in the video :)

[@mattjmwmatt]

I think i'm starting to understand why people from cold contries call snow "white shit". Having to deal with this stuff every day must be a pain.

[@fly-in-life]

Hi! uncle Bjørn I am a possessor of a Model x and I have an important question. At min 2:47 you have on windscreen that green vignette, it is from Norway? I let my kid driving my bmw for a period of time and that green mark is now on the windscreen. I have to resolve this mystery. Thank you so much for your videos are very helpful and inspiring. Keep doing the great job!!!

[@Xanatissimo]

I like how a good sport about it you are. Laughing and cheering. That's cool. ;P

[@pumpuppthevolume]

hmmm but it cracked because it was chipped right

[@stevegray1308]

A tip. Move to a warmer country. England is heaven and snow, as well as very low temperatures is rare. It may not be convenient for your work though. 😀

[@bjornnyland]

England is not warm. Thailand is warm.

[@stevegray1308]

Bjørn Nyland England not warm? Sometime in summer we get a day that reaches 25 centigrade. In winter it can reach 10 centigrade. That's blazing hot 😂

[@jimftr]

You can literally see the rock chip, surprised no one noticed it

[@gregor_b1]

It shouldn't crack from heat. It's more like stone chip inducted cracking by making glass structure week

[@AliA-sb2pd]

Who manufactures the glass for Tesla? My friends in snowy climates (Canada) always defrost their windshields like this and nothing has ever happened for years with their cars (German, Japanese, and American cars)

[@sumerbc7409]

In Texas here during record snow/cold... I did THIS !! I gotta tell everyone I know about this... I think it's the same physics of cold water into a hot coffee pot cracks it...

[@gogutzy]

probably they cheaped out on the windscreen, just as they did on the buttons/tablet - i've never encountered such an issue ever. doesn't surprise me that they saved costs like crazy - the car is only supposed to last 10 years (life of the battery), after which it's totaled.

[@nickdegroot2445]

Windshield damage will be reimbursed right? In the Netherlands every car will get reimbursement for a cracked windshield. Even 20 year old cars.