Tesla HVJB issues?

[Mrn]

Do Teslas have a similar issue to damaged contactors for extended high current flows through the high voltage junction box? I've never heard mention of this issue with any other EV.

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[DevSecOps]

Tesla has HV contactors as do all EVs. They have had their share fail, so has almost every manufacturer. The problem is that Ford, for a while, had a LOT of them failing. Likely hundreds a month.

Because of the failures with the MME, it's become a sensitive issue here. Just like any part, HV contactors can fail, but when it's due to poor engineering, bad manufacturing or whatever it gets put into focus.

The other issue that exacerbated it with Ford is the very poor way in which they dealt with it. The dealerships wouldn't prioritize it. Some failed to diagnose it properly and others failed to repair it correctly. Add to it, the software "fix" which isn't a fix. This made an already bad situation, worse.

So, in summary, I don't think it would be a big issue, and you probably won't see it mentioned, for other vehicles because they proactively fix it or reactively repair it in a quick and reasonable fashion.

 

[KevinS]

Do Teslas have a similar issue to damaged contactors for extended high current flows through the high voltage junction box? I've never heard mention of this issue with any other EV.

They had problems with the Model S, I believe, many years ago (probably 2012/13) and ended up replacing them. Tesla has had many years to improve their vehicles, even before the Model X and 3 were released.

 

[Mach-Lee]

Yes, the early Model S (P100D?) had problems with the contactors failing. Fixed with a revised Inconel contactor, very similar situation to what we have happening now. Tesla figured it out 9 years ago.

 

[superdave80]

The problem is that Ford, for a while, had a LOT of them failing. Likely hundreds a month.

There were a lot, but it wasn't that many. From the NHTSA report:

"Between July 13, 2021 and May 31, 2022, there have been 286 warranty claims in North America related to an open or welded contactor. "

 

[DevSecOps]

There were a lot, but it wasn't that many. From the NHTSA report:

"Between July 13, 2021 and May 31, 2022, there have been 286 warranty claims in North America related to an open or welded contactor. "

In Sept of 2022 I helped process 60 claims from forum members alone. There were a lot, likely hundreds. If I personally did 60 just here on the forum, no telling how many were processed outside of here. Facts come before PR spin. Also, May of 2022 was just the start.

 

[superdave80]

Facts come before PR spin.

What PR spin? And I directly quoted an NHTSA document. I didn't just randomly assign a number.

 

[DevSecOps]

What PR spin? And I directly quoted an NHTSA document. I didn't just randomly assign a number.

The NHTSA document was a complete PR spin. If you agree with it then you would also agree that the software deployed is a "fix". There's a reason that the NHTSA is looking into the HVBJB issues again. It's because the original "fix" wasn't a fix at all. It's what Ford "sold" to the NHTSA. I'm not going to pick and chose what parts of the document are correct. Based on my direct involvement, I can confidently say it's a lot of replacements. Again, the number you listed was in May of 2022. That's the very, very beginning of these issues.

 

[EELinneman]

In Sept of 2022 I helped process 60 claims from forum members alone. There were a lot, likely hundreds. If I personally did 60 just here on the forum, no telling how many were processed outside of here. Facts come before PR spin. Also, May of 2022 was just the start.

Todd, yes, you did help a lot of us. If you haven't heard it already, thank you!

 

[heisnuts]

Give me a little time... I am only at 2,600 miles so far on my Model 3 Performance.....

 

[Kamuelaflyer]

Yes, the early Model S (P100D?) had problems with the contactors failing. Fixed with a revised Inconel contactor, very similar situation to what we have happening now. Tesla figured it out 9 years ago.

P85 and 90’s as well iirc. A friend and neighbor had one of those (no longer recall which). His MS was down with the equivalent of the HVBJB failure for almost 6 months between the 3 separate occasions. No adjustments on his lease by Tesla nor did they do anything else for him. He returned it at lease end and refuses to buy/lease another Tesla. He has a Lightning on order.

 

[Msnwcpa]

P85 and 90’s as well iirc. A friend and neighbor had one of those (no longer recall which). His MS was down with the equivalent of the HVBJB failure for almost 6 months between the 3 separate occasions. No adjustments on his lease by Tesla nor did they do anything else for him. He returned it at lease end and refuses to buy/lease another Tesla. He has a Lightning on order.

I picked up a new MY this week, it had significant road noise that it's at service. The build quality is iffy. Driving sucks compared to MME.

The ride quality is much better not the MME wavy ride.

Tested the Tesla Vision, you need to be brave to hand over the driving to it. Day 1, it rained and cameras didn't pick up a squat. Not sure how it would brake since mine does not have radar or ultrasonic sensors. Blue cruise is miles ahead.

 

[BMT1071]

I picked up a new MY this week, it had significant road noise that it's at service. The build quality is iffy. Driving sucks compared to MME.

The ride quality is much better not the MME wavy ride.

Tested the Tesla Vision, you need to be brave to hand over the driving to it. Day 1, it rained and cameras didn't pick up a squat. Not sure how it would brake since mine does not have radar or ultrasonic sensors. Blue cruise is miles ahead.

But it's cheap...

 

[thekat03]

Give me a little time... I am only at 2,600 miles so far on my Model 3 Performance.....

We have full faith in your skills. ?

 

[Logal727]

Do Teslas have a similar issue to damaged contactors for extended high current flows through the high voltage junction box? I've never heard mention of this issue with any other EV.

Maybe check out the Ioniq 5 subreddit, they’ve got a similar issue with the ICCU, hell they’ve even got a helpful thread like @DevSecOps made for us, it’s all very familiar sounding

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