HVBJB issue - is this now behind us?

[KyloRen]

With my MME finally built last week and shipped now, should I be concerned about HVBJB issue? or is that issue completely addressed in the new builds?
Any inputs?

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[generaltso]

You should be fine.

 

[SuperRob]

If yours was built last week, you have the newest HVBJB part.

But that said, we don’t have enough data on the new part to know if it will truly fix the issue, or maybe expose some other weakness. Time will tell.

 

[RickMachE]

If yours was built last week, you have the newest HVBJB part.

But that said, we don’t have enough data on the new part to know if it will truly fix the issue, or maybe expose some other weakness. Time will tell.

?

 

[voxel]

Lightnings hitting the problem

https://www.f150lightningforum.com/...k-and-lightning-went-into-protect-mode.12801/

I personally have not seen/heard/read about failures with Mach-E HVBJBs installed after end of May.

 

[Vulnox]

It's not fair to say that Lightning's are hitting the problem because one Lightning had a stuck contactor. These have failed on other EVs because it's unfortunately also a mechanical part and they can just be faulty from jump. I'm also not saying the Lightning won't have the issue, it's just not fair to say one or even a couple failures is a certified trend like it has been for the MME.

As to the MME, as others said it's too early to say for sure it's completely solved. The reality is Ford screwed it up the first time, hard to just blindly trust that they solved it on the second attempt. Will need another year or so to know for sure. Like the Lightning above, there will be failures with the new part, but hopefully not because it's underbuilt for the purpose and more because of general mechanical failures or possibly abuse.

 

[HuntingPudel]

It's not fair to say that Lightning's are hitting the problem because one Lightning had a stuck contactor. These have failed on other EVs because it's unfortunately also a mechanical part and they can just be faulty from jump. I'm also not saying the Lightning won't have the issue, it's just not fair to say one or even a couple failures is a certified trend like it has been for the MME.

As to the MME, as others said it's too early to say for sure it's completely solved. The reality is Ford screwed it up the first time, hard to just blindly trust that they solved it on the second attempt. Will need another year or so to know for sure. Like the Lightning above, there will be failures with the new part, but hopefully not because it's underbuilt for the purpose and more because of general mechanical failures or possibly abuse.

There has been one known case of a post-changeover MME being delivered with a faulty HVBJB as well. There is nothing to suggest that this particular vehicle suffered a welded or melted contactor. IIRC it failed on leaving the dealership when its owner picked it up. ?‍?

 

[Vulnox]

There has been one known case of a post-changeover MME being delivered with a faulty HVBJB as well. There is nothing to suggest that this particular vehicle suffered a welded or melted contactor. IIRC it failed on leaving the dealership when its owner picked it up. ?‍?

Yeah if it's the one I am thinking of, I actually looked up their VIN in OASIS and the car had a bunch of codes from the day it was put to be transported. That one probably should have been caught before it ever left.

 

[Maquis]

It's not fair to say that Lightning's are hitting the problem because one Lightning had a stuck contactor. These have failed on other EVs because it's unfortunately also a mechanical part and they can just be faulty from jump. I'm also not saying the Lightning won't have the issue, it's just not fair to say one or even a couple failures is a certified trend like it has been for the MME.

As to the MME, as others said it's too early to say for sure it's completely solved. The reality is Ford screwed it up the first time, hard to just blindly trust that they solved it on the second attempt. Will need another year or so to know for sure. Like the Lightning above, there will be failures with the new part, but hopefully not because it's underbuilt for the purpose and more because of general mechanical failures or possibly abuse.

I believe there have been 3 reported on the Lightning forum so far.
Agree, it’s not yet a trend, but worth keeping an eye on.

 

[HuntingPudel]

Yeah if it's the one I am thinking of, I actually looked up their VIN in OASIS and the car had a bunch of codes from the day it was put to be transported. That one probably should have been caught before it ever left.

Pretty sure we are thinking of the same reported vehicle. Agreed that it should have been caught by the dealer in prep. ??

 

[Jimrpa]

It would still be interesting to know what percentage of the total fleet has been impacted.

 

[BMT1071]

It would still be interesting to know what percentage of the total fleet has been impacted.

But that would take some of the wind out of the sails of the 'sky is falling' crowd on here.

 

[Vulnox]

I believe there have been 3 reported on the Lightning forum so far.
Agree, it’s not yet a trend, but worth keeping an eye on.

Oh yeah, I always try to be careful how I word that stuff as I don't want to come off like I am just pretending Ford can do no wrong. They absolutely can and have and will again. Just forums tend to grab onto anything with a similar behavior and call it a certified trend. Which can hurt us a bit because it may be something else and we won't learn what's going on.

 

[dbsb3233]

When they replace it, is it the entire HVBJB board that gets replaced (all the contactors/resisters), or just one component on it?

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