Fixing my Heater in my Tesla P85 - I'm Giving Up if This Doesn't Work!

[@greengrass89]

It was the resistor the whole time 😂

[@AutoAuctionRebuilds]

No. The DC/DC kept blowing the resistor and killing the PTC. The DC/DC was the root of the issue.

[@greengrass89]

@@AutoAuctionRebuilds are ya sure? You never showed trying a new resistor with the blower wired back up properly. How would the DC-DC keep blowing the resistor? High or low 12v voltage? Intermittent power surging? The PTC was still working when you had the blower hot wired. It was still charging the 12v battery and running accessories. Sooo… I’m not convinced it needed a new DC-DC. Blower resistors go bad all the time. The “replacement” ones having junk yard writing on them tells me they were probably bad from the start. Glad you got it all working again, but I bet ya it was just the blower resistor the whole time.

[@AutoAuctionRebuilds]

I explained this several times. The DC/DC runs the PTC. The original issue was a bad fan that overloaded the thermal fuse due to heat from a dead fan not blowing air over the heatsink to cool it. The fan was replaced. The new resistor didn't last long as it blew too with a new fan installed. The PTC would go ice cold even with my toggle switch hooked up and the heat set to max. The PTC unit is a brand new gen 3 unit. Everything works fine now with the replacement DC/DC and resistor module.

[@chrish8871]

Did he watch the video? 😂

[@AutoAuctionRebuilds]

Probably not 😂

[@averagedudethirteen3257]

Not gonna lie, I’ve become more interested in getting a Tesla after watching these videos.

[@ZFaR85]

For the TPMS, hit the reset on the TPMS, then change the size of the wheels to 21" in the 'Service' menu, let the computer reboot, then switch the wheel size back to 19", wait for it to reboot again, go for a drive, sometimes it takes a few minutes, sometimes up to 15 minutes driving at speed above 45mph, and you'll start to see the pressures populate (assuming the right sensors were installed from the get go). Do this away from your old wheels, or else it will be trying to read from those. This happens with me every time I swap my summer and winter wheels. Good luck, hope this works for you! Keep us updated!

[@AutoAuctionRebuilds]

I’ll give it a try. Thank you.

[@davidwebber8356]

Are those Tesla tpms in the tires? If not that might be the problem. I have a m3lr and can't run non tesla sensors. @@AutoAuctionRebuilds

[@rossfield8850]

Shout out to the toggle switch, thank you for your service. That thing was playing havoc with my OCD 😉

[@fabiodossantos9774]

I have a 2014 MS85 and I can’t get the tire pressure screen indicator on my small screen. Is that because I don’t have the Tesla TPMS or I am not finding it?

[@ZFaR85]

@@fabiodossantos9774 Some earlier Tesla MS85s will not show the tire pressure, only a low pressure warning. You may have to upgrade the TPMS. Tesla changed the entire Tire Pressure Monitoring System (TPMS) starting with VIN 50900, around September 2014. Cars prior to this VIN have an older system that is unable to display tire pressure in the car. It still will warn of a tire with low pressure. If your Model S has it, you can hold in the left or right thumb scroll wheel on the steering wheel and see if it gives you the option to select tire pressure on the small instrument cluster. Hope this helps!

[@bigzer56]

I was happy to see that you finally solved that heater dilemma.. I'm looking forward to more fixes on the Tesla..

[@bradleypollack5658]

Randy, I’m so glad you’re open minded about electric vehicles. And you still have a love for ice engines. Congratulations on fixing your Tesla. That’s pretty awesome.

[@carlosmachado-sd8il]

It is very satisfying when you are able to repair things yourself. Good job!

[@HerbOldenburg]

That "ah-ha moment" - so glad you ran this issue down Randy - thx for sharing - your experience shows in all your video's.

[@americanrambler4972]

Really enjoying your Tesla series. Tesla claimed these cars could have a long service life. You’re doing the work to do the repairs to prove that it can! Next stop, fixing the worn out suspension component’s that are basically routine maintenance repairs.

[@finndog67]

Great job Randy!! I'm really glad you finally tackle that heater issue. This content is showing that its possible to maintain your own high mileage Tesla without forking over a ton of money and your first born child every time to the dealership every time you need something done to your car!

[@CSAFMedia]

'Right to Repair' this 15:30 is what it's all about! 👏👏👏

[@yodasbff3395]

Both the Tesla and the ELR are my all time favorite cars. I really enjoyed watching you get them fixed. Thanks for sharing your videos. 👍

[@rp42069]

Open up the inverter so we can see the inside damage.

[@harriettanthony7352]

AGREED! Open the case and see what lies beneath.

[@peterchang452]

These videos give hope that used Tesla are options to consider

[@t.l.robinson2162]

I like the Tesla but your ELR is absolutely beautiful.

[@meandmyEV]

I had a chance to buy an ELR when I bought my Volt. The Volt is a great car but the ELR has appreciated in value since then. It looks fantastic.

[@AndreasLarsson95]

I'm not a fan of tesla or electric car in general, but i like your content either way. So i watch it anyway. I might learn something.

[@shou635]

Should try one for a while. I’m glad I did. Won’t go back to a gas car ever again.

[@mackchild]

You literally figure out every problem to every car you own 😂😂 that s Lit 🔥🔥

[@biggiemouw2008]

😃thank you now im going to have 100 rtv caps stored in my tool box for hose block offs🤯

[@jasoningram9928]

Randy, time to start a new channel. "Fix Your Tesla with Randy"

[@t.l.robinson2162]

I am very glad that you were able to fix the problem with your heater and blower. I am also glad that a subscriber was able to tell you how to solve your TPMS issue.

[@clarkleakins879]

Suspect the DC2DC converter has an internal water leak. Will you attempt to open and investigate, show it? How much TIME (=$$$), and $ did you spend to make this repair? Now imagine what it would cost Tesla to do the same? This is likely why the vehicle was sold at the low price. Yes the Tesla is very "modular" (usually simple) to effect repairs, some easier than others. The key: it also requires a very skilled and experienced technician to be efficient, know the diagnosis procedure. Stuff you can learn, basics, in only a few schools. Now Logic systems understanding, more than mechanic skills are required.

[@DeepSouthTechie]

I love technology. That Tesla and Cadillac makes my heart race. Both of them are very nice cars Randy.

[@trclark7689]

I have to admit, I'm one of the one's that have been in the "I hate EV's" crowd, but the Tesla's have really grown on me. Love the videos on the Tesla's. I'd buy one, but I have virtually no access to home charging. Some day.

[@pauld6967]

I suspect that others watch for the same reason I do. I sometimes consider picking up an old 'S' and wonder about what kind of gremlins might await if I do so.

[@haskellburks]

Hello Randy. Trying to fix the heater fixed and everything else on the 2013 Tesla Model S P85.

[@pcguy13x]

remember , the thermometer took a little bit to show the colder temps because it is not giving you the temperature of the air coming out, but the temperature of the plastic that the beam is on, and that part takes some time to call off after having 122 degrees going through it, lol. that is why the temp fluctuates when you move it around too.

[@bobmcmurray2546]

Hi Randy love the Tesla videos great job fixing the heater as far as the tpms goes there were 2 different systems installed in teslas and you may have the new sensors and the old receiver or the other way around but they are not compatible with each other Tesla makes a kit which includes a new receiver and small wiring harness to update the old teslas to the new system but I believe you have to take it to a Tesla service center for a software update to make it work they cannot do a ota software update unfortunately

[@nononsenseBennett]

Hope you'll open up the bad module....curious what went wrong.

[@DaveBaker-vb3jg]

Hi Randy. Just off the back of this video. Glad all is now sorted, and love this car. Unable to find one as cheap as you got yours here in the UK though! You have converted me bud, i want a model S! Never thought i would admit to that. Noticed from the interior shots that the gear selector and cruise control stalk looked very familiar as on my MB E350. Bit of research reveals they are from the W212, also window switches. Cup holders are from the M Class, apparently. Great videos mate, and being from the UK, really looking forward to the Bentley. Keep the content coming, love it all and thanks.

[@SwampBoysGarage]

Great job on fixing it and explaining it.

[@AutoAuctionRebuilds]

Thank you! Loving the jet ski series!!

[@drrick8839]

Randy my friend, I’m very impressed with you fixing the HVAC in your Tesla. CONGRATULATIONS! I never thought I’d ever be interested in a Tesla for myself, but you’ve changed my mind. Especially with how great yours drives and performs with the better part of 300K! Until this video I’d never even explored the prices or searched for one, but now I’m actively looking for one completely thanks to you. My spinal disease problems have worsened quite a lot over the last two years so I now only drive between 2000 - 4000 miles per year, so given your experience with this high mileage unit I’m not worried about buying one with similar or even higher mileage. Of course I want one that’s been well taken care of and never had serious accident damage. In other words, one like yours. The other issue caused by my back problems is that it’s extremely unlikely that I’d be driving more then 25-30 miles round trip, so I have absolutely no “range anxiety”. Also, jumping subjects a bit, back when I was 100% alive I spent about half of my career as an electronics engineer and technician. I’d love to take a shot at repairing/rebuilding your faulty DC to DC Converter. I’ve repaired/rebuilt dozens of BMW, Audi, VW, Nissan modules for friends with a 90%+ success rate. I do it for free if I have the replacement parts on hand. There were about half a dozen for which I had to buy parts for and most of the parts are so inexpensive that I don’t charge anything for them. I hate taking money from friends even if I had to pay for a few parts. I have gotten some wonderful steak and lobster dinners for a couple of hours bench time. If you’re interested in having me rebuild your DC to DC Converter and/or the resistor module let me know so we can arrange shipping. Congratulations again on taking on and successfully repairing a vehicle you’ve never worked on before. Very cool. Peace my friend, DrRick

[@ItsMackVern]

I noticed the DC-DC has terminals to the 12V Battery. I have a 2013 Model S also, but my 12V keeps dying. Got a new battery from Tesla mobile and installed it myself and still having the same issue of having to jump the vehicle off almost every time i want to drive. Question: do you think the DC-DC converter could be my issue?

[@AutoAuctionRebuilds]

I'd put my money on it, yes. It charges the battery.

[@AutoAuctionRebuilds]

Run a self diag on it. Go tho the screen with mileage / P85 and hold where the car model is for 4 seconds. Then enter "service" for the code. You will then be in diagnostic mode where you can see the current errors.

[@gregory13lil]

Great info thanks!!! Looking forward to more Tesla how to’s. Just bought a 2015 Model S 85D at auction a couple weeks ago and trying to learn as much as possible.

[@Killahkron1992]

It finally paid off you saved tons of money

[@johnp1040]

I have to hand it to you, you are an excellent mechanic regardless of vehicle type.

[@williamcochell9889]

Hey Randy, holy smokes! I have to be redundant I’ve said it so often, but OMG the variety that you bring to this channel is unparalleled in automotive channels! Now, a Bentley! Just a little bit from the past viper, Aston Martin, vintage Cadillacs, hot rods, road trips with monkey wrench, Mike, personal experiences, and shared experiences! Enthusiasm, knowledge, and Ginuwine love for the vehicles you share with us!

[@jmo2366]

The tpms requires a specific stem sensor, i had the same exact code. You can order the stems online, you need the first gen tmps sensors as they only work with first gen tpms receiver

[@charlesmarcheschi9151]

Great job Randy. Love seeing these videos when things go right

[@altenergyofva]

Randy. Now you can apply at Tesla for a level two tech. LOL

[@davidbratton9346]

Your 2013 Tesla has the updated Continental System not the original Baolong system because your screen shows individual tire pressures. Are you sure you have the correct TPMS in the new wheels? The Continental system started in late 2014 (Vin>50900 ) but a lot of cars were upgraded under warranty when Baolong system failed.

[@AutoAuctionRebuilds]

That is probably the issue right there. Thank you.

[@romeoalphafoxtrot9517]

Great video Randy! So glad for you that you got this heater issue sorted. It is really interesting that the parts you used weren't that expensive. Who knew? Although some things were a little fiddly to work on, it wasn't any harder than a lot of regular gasoline cars. Try replacing the heater core on some of the newer cars nowadays! You pretty much have to gut the interior to do that. This one just had some panels that popped out and plugs to disconnect. Not bad at all. I'm looking forward to the next videos where you will fix the suspension and the backup camera. That Tesla is cool! I like it!

[@eduardoholanda9356]

A man's novel. That's what people like. Let's see if it makes it to a million miles, despite being mistreated by the last owner. Cheers and keep finding Teslas.

[@slivkask8329]

Thanks for another video. I really enjoy them. I just started watching this video and I really doubt it is the converter or PCT unit. The original converter and PCT unit were able to heat up the air blown by the blower using your toggle switch solution.

[@Next_Reality]

About flipping time Randy. Heat at last with a blower. Awesome work.

[@bigkev10101]

Good job on the Tesla. I like seeing the videos on it because not a lot of people are working on them.

[@_benz4lyfe]

My neighbor has a brand new Cadillac Lyric. It’s really nice. I would go with the Cadillac over the Tesla just because of the customer service experience. I’ve spoke with Tesla owners who don’t have good things to say about the brand.

[@shou635]

I’ve had great Tesl customer service. Some locations are better than others. Most dealers don’t have a clue how to fix the ELR.

[@craigjorgensen4637]

Congratulations! Your perseverance paid off! No Teslas for us!

[@cutehumor]

I gave you a thumbs up for fixing the no heat and no ac for Tesla. 😁

[@WebFreedomLifeStyle]

Awesome Randy 👍👍 lot of Tesla people will learn from this with the older models.😊

[@davesantos456]

Bravo! Good job getting the car fixed.

[@CDKladis]

Hope it works out well for you

[@markusstrobl1067]

Your car has been updated to the new TPMS system since it shows actual pressure on the cluster. The original system didn’t show pressures, just warnings for low pressure. The new system uses different TPMS sensors from continental. I suspect your replacement wheels have the old sensors and that’s why the relearn won’t work.

[@WinstonsGarage]

Nice work dude!! Make sure you get all the air out. It is vital. I would do the 15 min service twice to be twice as well as putting a shop vac over the coolant bottle. So glad you figured it out!! I love this thing!

[@martinculjak16]

You can report to work Monday morning as a Tesla mechanic

[@garycusack9247]

so glad u got the blower motor and heater fixed what a lot to do though

[@landlubber1967]

If Randy took the dough for the XLR he would basically be driving a free fixed up Tesla with a working heater. The notion of short commutes suits both cars, but 135 mpg ain't bad in the XLR either! Either of these cars look like an incredible way to spend less dough than new. I look forward to hearing more about the 2014 XLR and how much it costs to reflash it to clear the codes.

[@jayray8097]

That’s awesome Randy !you got it fixed !

[@kevincopinger9630]

Awesome result on the heating Randy!!

[@techbilldeaf]

What i am interested in is you doing the DC DC autopsy if it something that can be easily taken apart to see what had caused the issue. Good troubleshooting video.

[@2003cobramustang]

Keeping my fingers crossed Randy that this works. Nice Randy glad the heat works that’s awesome

[@marvinwilbur9903]

good job... hope you put the old rims back on w/ the new tires.....

[@Vetteman372]

Congratulations. after all the trouble you went through, I guess it does feel good to fix that thing. Plus, all the money you spent. It's funny, the Tesla dealer couldn't fix it right. if that's what the last place that had it before you. that put in that new heat element in. From what I heard it's based on a heat pump, like at a house.

[@KylesVideos]

The newer ones are heat pumps but his older one has a resistive heater.

[@howardgore9807]

Good call on reevaluating & dissecting the issues of the heating module. If you're DIY- ing your own cars, labor is way less than a traditional mechanic/ dealership will charge you.

[@EndorphinFactory]

Uber man! Been watching you since I started driving uber back in the summer of 2015… I’m still driving and a model 3 at that hahaha . Love your vids bro

[@waynelevett3632]

Hi mate, l love your car and you fixing it. I have the 2016 S 85d and I'm loving your education shows that I will probably need to know. Thanks for you all your work.

[@crysis_averted]

Can you open the DC/DC to see if there is any noticeable internal damage?

[@maverickflint1991]

Happy for you that you got all those things done and your heater works again.👍

[@eostrike]

Great job Randy. So which part actually fixed the heater that Tesla was not able to figure out? I am guessing the module above the passenger front wheel?

[@bigrich439555]

Good job on getting that blower motor to work.👍

[@michaelwyatt8030]

Morning Randy nice to have it fixed Randy now you can drive it again

[@GroundWater2]

Love the channel man! Can't wait to see what you bring next (Cybertruck?)

[@EricDrummondBPCP]

Good stuff bro she is really coming together keep up the great work and I look forward to more content. You got a Bentley that's going to be an interesting video

[@TheJensenInterceptor]

please can we have a video of you stripping down the DC DC convertor please

[@latainethomas3595]

great job nice to see you can work on one yourself mu granddaughter has a bow electric and loves it

[@danieldoherty6475]

you are certainly resilient. I am impressed.

[@rudypernas7962]

hey Randy im glad you got it fix good job

[@mikesharp8653]

Amazing job Randy. I gotta hand it to ya, I'd be scared shitless working on such a dangerous car.

[@salas231141]

So the do it your self tesla repair begins. Thank you for this awesome video

[@VinhCali]

Hey Randy! Thanks for sharing and much appreciated! Also congrats on the fixed! My 2016 MS recently got error code "PTC cabin heating error.." should i go ahead replace the Dc to Dc unit first before touching the PTC unit? And also blower resistor need to replace as well? Thanks for your help!

[@pbattis1]

I liked the toggle switch. It seemed to do the job just fine. That being said, you work on the Teslas so we don't have to. Always interesting Randy. Great content as always.

[@postersm7141]

The toggle switch is actually a problem, because if you turn off the fan, but leave the heater on, it will blow the resistor pack. The resistor pack relies on the blower running whenever the heater is running otherwise it will blow the thermal fuse.

[@pbattis1]

@@postersm7141 Well there you go. I had no idea. Thank you.

[@MikeInBendOregon]

I'm still learning about these cars, but looking at the parts that you have replaced, I was thinking that you should have instant heat. Is that the way they are supposed to work ? It kinda threw me for a loop when I saw the two coolant hoses going into the panel that you replaced. The coolant hoses don't have anything to do with the heater correct ?

[@jamesburns2753]

Your video has made me become real interested in a local 2019 Model S 90D going for $20,000 with only 117,000 miles. Great video. new sub.

[@AutoAuctionRebuilds]

Best of luck!

[@akhtarkh]

If the fan does not work, it would not draw any current across the blower motor resistor and should not pop the resistor. Only if fan is seized, it will draw excessive current.

[@derekritch4360]

Nicely done Randy

[@maverickflint1991]

Good morning Good to see you again. 😊👍

[@scott-gg8iq]

Randy you're the man nice job I knew it all along

[@Thewolfpack833]

I noticed flags from different countries hanging on the walls, were those sent by viewers? If so that's awesome!! And I know it made you feel proud. 👏👏

[@joseCalderon1976]

Very good work. Congratulations

[@markbell1127]

I was yelling Randy disconnect you fn toggle switch lol

[@benkanobe7500]

How many volts does the heating element of the heater require? I am always amazed how fast my 2015 S P85D heater starts pumping out lots of heat.

[@AutoAuctionRebuilds]

It runs between 7500w and 9k watts as for voltage you’re looking at 400v.

[@kylerwalker]

Man good job randy loved the video glad you got your heat fixed 😊

[@kc0lif]

i know some other people like ev but I'm curious what's involved with ev. makes sense gotta get heat from something. you seem to know what you're doing.

[@CondoreComputing]

I've watched your videos on and off and enjoy them, but this series in particular ive been following every video, I love seeing someone tear these cars apart and repair them. Not a ton of people on youtube doing their own work on them. I've find it interesting how a lot of problems are relatively cheap / easy to fix in comparison to what a lot of peoples opinions may be. Outside of the HV battery of course. I don't see too many of the common repairs being any worse than say German vehicles, and salvage / new parts seem pretty reasonably priced. If I had a space with a lift I'd even be interested in grabbing a salvage vehicle with a bad HV pack and tear into that for fun. I've never been a fan of Tesla and hate how politicized a lot of people make EV's, (You could say that about a lot of my interests, just let me have my EV's and firearms in peace) but I just really like these cars for the experience they provide, even stupid stuff like the fact that your HVAC and audio start the second you unlock the car, getting into an already warm car where all you have to do is put your foot on the break pedal and start driving as soon as you hop in, that you never have to make a trip to refuel / recharge as long as you have home charging and follow ABC is something you wouldn't realize how nice it actually is untill you try it. IF someone made a PHEV with more than 40 miles of range with the whole tesla experience in terms of software and convenience for the same price as a model 3 I'd be all over that but no other auto manufacturer provides an experience like that under $65 to $70K. Rivian would be the only other one that does it correctly. Now if only Tesla customer service wasn't a dumpster fire.

[@svetlinkunchev4818]

Hello, nice job. Congratulations. I won't to ask you when you change the heater is it need to be programmed or just plugs the new one and everything is working fine?

[@AutoAuctionRebuilds]

I just plugged it in and it worked perfectly

[@Streeknine]

Love the new wheels, they look great.

[@M67v]

Glad you fixed the Tesla and I can’t wait to see the Bentley

[@josephwilkerson4731]

I have a Tesla and you have to drive a few miles after resetting the sensors to get them to register

[@Paul_Caruana]

What can I say Randy except…you’re the man!

[@mcunha81]

Hope u figured out Tpms? I think ZF,might be on to something

[@geneedee]

I only watch because you post so many videos of this Tesla.

[@17pac]

What part number should I use to replace the prc heater on my 2013 p85? There are a ton of different part numbers. Any help will be greatly appreciate