Updates on the HVBJB (22S41)

[generaltso]

NTSB recalls are only concerned with safety. Possibility that your car bricks mid-drive or at a DCFC away from home - safety issue. The software non-fix drastically reduced the likelihood of a safety issue occurring, addressing the NTSB's concern. NTSB doesn't care about HVBJBs that will eventually fail, only that the failures can be detected and prevented to an acceptable level.

NHTSA deals with vehicle recalls. The NTSB is more interested in investigating plane crashes.

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[kennethjk]

Sell the car. You clearly aren't enjoying it. I'm very glad you don't run risk management/system safety anywhere I have worked in my career. Nothing would ever get made.

Always nice to say “glad you don’t run risk management at my firm or nothing would get done” without knowing anything about someone except for a forum about a car but as they say, you do you.

since you know everything about me, congrats on your conclusion.

you obviously didn’t read the fact that I enjoy the car overall, except for this one issue.

at least I do have a frunk button That I can also enjoy!

 

[Regulus7]

I think in my case @dtbaker61 nailed it in his list. I was parked at a hotel L2 charger from 8am till 4pm charging to 100% from like 26%. It was an unusually hot day - over 75F and I did WOT on the hiway passing another car when it struck. I bet it was that long charge plus the WOT and of course nearly 13,500 miles….

I am looking forward to getting it repaired as i intend to drive it a bit more energetically and no longer avoid DCFC stations…

do we know what is the incidence of 2nd HVBJB failure like? I agree with most that life is too short to worry overmuch but nevertheless I will continue to use this car as my commuter and use my ICE cars for long trips.

 

[AKgrampy]

I think in my case @dtbaker61 nailed it in his list. I was parked at a hotel L2 charger from 8am till 4pm charging to 100% from like 26%. It was an unusually hot day - over 75F and I did WOT on the hiway passing another car when it struck. I bet it was that long charge plus the WOT and of course nearly 13,500 miles….

I am looking forward to getting it repaired as i intend to drive it a bit more energetically and no longer avoid DCFC stations…

do we know what is the incidence of 2nd HVBJB failure like? I agree with most that life is too short to worry overmuch but nevertheless I will continue to use this car as my commuter and use my ICE cars for long trips.

There may be more but one forum member has had two new model HVBJB failures. Not 100% sure of any others.

 

[Kamuelaflyer]

How many people has this stranded? The vehicle still functions.

More than a few and not always.

Although I agree with your position that I wish Ford would have changed them all out I also agree that the software takes care of the safety issue for the most part. You do not hear of many, if any, stranded cases (of course forum small subset) these days. Normally everyone now can drive it to the dealer. The software warns of potential failure and then also limits power in order to prevent the failure. I know it can still completely fail to SSN but rarely does at least from what I have been reading. If passing, then just like any situation that interrupts a passing move like an oncoming car, you apply brakes and drop back in behind the vehicle.

Awfully presumptuous.

You can’t always step on the brakes and pull back in behind the car you were passing. People fill that empty space very quickly.

HvBJB SSN failures are still happening. On cars with the update. On two lane roads with no shoulders. And in cars with the new HVBJB.

The dealer for this rock has had 3 this year. 2 on 2021’s with the recall update. 1 on a 2023. Yes you read that right. All three of these were on two lane roads. 1 had no shoulder. All 3 were SSN. Nobody fast charges their MMEs here as all but two are old EFACEC units. Between the three production years there are fewer than 100 Mach-e’s here.

Ford’s method of dealing with this is short sighted. Ford has an atrocious recall record and really just doesn’t care about it despite their CEO’s oft quoted comments to the contrary and despite his background at Toyota - Lexus.

 

[1969Mach1Mike]

More or less. There is no software fix beyond the current software which usually prevents the car from dropping dead on the spot. The long term fix is to wait for the HVBJB to fail then replace it. There may or may not be an HVBJB shortage driving this decision.

Complain to Ford executives (seriously) and the NHTSA.

They are applying "The Formula" with the decision on not fixing it.

 

[dtbaker61]

Ford’s method of dealing with this is short sighted. Ford has an atrocious recall record and really just doesn’t care about it

I totally agree. I filed a complaint to nhtsa to try and bump this up to a real recall. Citing all the dangers of getting stranded in bad weather or dangerous locations

I think it is pretty obvious that the redesign part is still marginal. The cooling system of the batteries and the sealed enclosure of the HV bjb needs redesign and part replacement to handle thermal issues better

 

[Kamuelaflyer]

The cooling system of the batteries and the sealed enclosure of the HV bjb needs redesign and part replacement to handle thermal issues better

It’ll be “interesting” to see how this is handled during model refresh or next gen.

 

[Kamuelaflyer]

They are applying "The Formula" with the decision on not fixing it.

Yeah.

I’m sure they feel the failure rate is very low and this doesn’t justify a full recall of every 2021 and half (????) the 2022’s. I understand that point of view. It’s also wrong (IMO).

 

[ryano7700]

My HVBJB just failed after 3,400 miles. No DCFC but no special treatment concerning WOT. Is that what done it in? Will my replacement HVBJB last the same mileage?

 

[kennethjk]

My HVBJB just failed after 3,400 miles. No DCFC but no special treatment concerning WOT. Is that what done it in? Will my replacement HVBJB last the same mileage?

Sorry to hear.

Your car has the new more “robust” part as it was built after May 2022, correct?

not a good omen If that’s the case.

 

[AKgrampy]

My HVBJB just failed after 3,400 miles. No DCFC but no special treatment concerning WOT. Is that what done it in? Will my replacement HVBJB last the same mileage?

If you research other threads you will see that cars manufactured after May 22 had the new style of HVBJB. To my knowledge there have been few, perhaps only one reported of forum, failures of the updated version. So you should be good moving forward.

To be sure when was your car built and is it a confirmed HVBJB failure? There is that “phantom” software glitch failure lately.

 

[ryano7700]

My car was built July 2022. So it had the new improved part? Very concerning.

 

[AKgrampy]

My car was built July 2022. So it had the new improved part? Very concerning.

It would be interesting to see, if you could ask, what part number was installed in your car. If it is the new number then it is cause for concern; although, there is always some amount of failure but it will not be good if the new part number begins to fail too. At this point it has not been the case but it has only been 9 months.

 

[Ghost Ryder]

I just wish that everyone that had their HVBJB fail would send a report to the NHTSA. Maybe then, they would mandate a real recall to replace all the parts.

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