Tesla Model X PTC failure

[ZeroSugar]

Hi,

Front PTC failed few days ago. At first blew warm and randomly cold. Now it blows only cold. I replaced front PTC(both were 3gen, one was 1060432-00-D and the other 1060432-00-C). PTC still isn't working. I restarted vehicle. I'm going to replace the 40A 1019010-00-A fuse at Front junction box but before that I was wondering is it even broken if rear PTC works just fine?

 

[ZeroSugar]

Never mind. Got it fixed by replacing PTC, 40A fuse and re installing software. Here is video also for DC DC Convert Front Junction Box Generation 2 Fuse replacement

 

[Kess]

Hi having the same issue replaced PTC with gen 3 still no change. Before I change the fuse did you check if the PTC is getting voltage? As mine is.

 

[ZeroSugar]

I did not check. When i measured old fuse, ar first it looked like its working but after removing it and measuring it again it was clearly broken. Have you re installed software?

 

[invisik]

Hi.. I'm looking to check/replace my fuse on my 2017 X. Did you buy the fuse from Tesla or aftermarket? If aftermarket, where'd you get it from and what brand/model was it?

Thanks...

-m

 

[ZeroSugar]

BUSSMANN BY EATON FWP-40A14F FUSE, 40A. 40A 700V fuse. Tesla sells these also but for double the price. Im in EU so I used website Farnell.

 

[invisik]

THANK YOU so much.... Found it here too.

https://www.eaton.com/us/en-us/skuPage.FWP-40A14F.html

 

[Kess]

I did not check. When i measured old fuse, ar first it looked like its working but after removing it and measuring it again it was clearly broken. Have you re installed software?

Ah I see, haven’t yet tried to have the software re-installed.

 

[Cheburashka]

How did you reinstall software after PTC replacement?
@ZeroSugar @Kess

 

[ZeroSugar]

How did you reinstall software after PTC replacement?
@ZeroSugar @Kess

From the service menu

 

[mtocso]

Hi,

Where is the PTC fuse located in a 2017 MX?

Thanks,

 

[ZeroSugar]

Hi,

Where is the PTC fuse located in a 2017 MX?

Thanks,

You can see clearly in the linked video.

 

[mtocso]

Thank you, I was hoping it has a more easily accessible location. I can do minor fixes but this is beyond my expertise. It seems I should stick with Tesla service for over 1k price

 

[ZeroSugar]

Thank you, I was hoping it has a more easily accessible location. I can do minor fixes but this is beyond my expertise. It seems I should stick with Tesla service for over 1k price

I did it first time around 6hours outside.

 

[mtocso]

I did it first time around 6hours outside.

Yeah, since I don't even know if it's the fuse or not(maybe it's the PTC heater itself) I'll probably wait for Tesla's diagnostics and if they quote the DCDC converter then I might think about doing myself, but since we're thinking to sell the X(as we don't need a 7 seater anymore) and buy a brand new Y I'll probably go with the official service. But thanks for the info. How's your heating btw? Is it still working? I your case was it the PTC or the fuse?

 

[Cheburashka]

The heater itself is pretty easy to swap (I did it on an S)... The fuse not so much

 

[ZeroSugar]

Yeah, since I don't even know if it's the fuse or not(maybe it's the PTC heater itself) I'll probably wait for Tesla's diagnostics and if they quote the DCDC converter then I might think about doing myself, but since we're thinking to sell the X(as we don't need a 7 seater anymore) and buy a brand new Y I'll probably go with the official service. But thanks for the info. How's your heating btw? Is it still working? I your case was it the PTC or the fuse?

Fuse and ptc both. Ptc is easy to replace, 1hour max byself. Usually when ptc goes bad it triggers fuse also. Useless to pay to Tesla for diagnostics. Change the ptc and see. Used ptc around 100$

 

[simps]

Hello!

My ptc heater has also broken lately. I plan to change this myself, as Tesla in Norway will have NOK 17,500 for this job.

But I have seen a video and read up a bit on this, but I see that Tesla has a method to stop high voltage in the car. That's why I was wondering how you started working on the car? Is it just to remove the 12v battery or do I actually have to do the whole method that Tesla does. I think they call it: vehicle electrical isolation procedure.

 

[mongo]

Hello!

My ptc heater has also broken lately. I plan to change this myself, as Tesla in Norway will have NOK 17,500 for this job.

But I have seen a video and read up a bit on this, but I see that Tesla has a method to stop high voltage in the car. That's why I was wondering how you started working on the car? Is it just to remove the 12v battery or do I actually have to do the whole method that Tesla does. I think they call it: vehicle electrical isolation procedure.

service.tesla.com has the manuals for free.

 

[ZeroSugar]

Hello!

My ptc heater has also broken lately. I plan to change this myself, as Tesla in Norway will have NOK 17,500 for this job.

But I have seen a video and read up a bit on this, but I see that Tesla has a method to stop high voltage in the car. That's why I was wondering how you started working on the car? Is it just to remove the 12v battery or do I actually have to do the whole method that Tesla does. I think they call it: vehicle electrical isolation procedure.

I removed 12v battery and HV rescue loop as seen on video.