POST Recall Software HVBJB Failure

[Neil4Real]

Well I think it's pretty obvious that Ford implemented a strategy of the GT's having to derate their power to prevent issues such as the ones afflicting the HVBJBs.

I'm not sure there was a master plan here, but I would put $1 on there being less power limiting that I've seen today. It seems like the power limitation timing is shorter. I think there might be a little less derating going on with the extra spicy parts and software, but I think someone would have to hammer two identical cars except for the robust box, and compare.

You almost need a camera just taking video of the power meter (the jail bars are sooo small) to compare when they go away after giving it the beans.

Well, it seems to be similar power limiting, maybe it reduces slightly faster and allows a bit more power up front for slightly longer, but it is still there if you're slamming it.

All of the below was done in Whisper.

I did about 5 or 6 WOTs on the freeway today, first one I hit 100 before I was hard power walled, before once I'd hit high 80's/low 90's it was a crawl to 100. I then backed off to about 65 and slammed it again and the power wall was hit quicker and quicker as I repeated it. After the 5 or 6 WOTs, I was left with about 50% power, I set cruise control to 65 and the 50% remained for about a full minute. It then reduced to 33% reduction, then just 4 bars, then 2, then 0. It FULLY cleared to 0 bars after roughly 5 minutes of driving. I was at 90% SoC when I did my "testing."

Thankfully I hit the 50% limit when I did as I saw a motorcycle cop right around the bend when I slowed into 65 MPH on cruise control!

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[scoopman]

Well, it seems to be similar power limiting, maybe it reduces slightly faster and allows a bit more power up front for slightly longer, but it is still there if you're slamming it.

All of the below was done in Whisper.

I did about 5 or 6 WOTs on the freeway today, first one I hit 100 before I was hard power walled, before once I'd hit high 80's/low 90's it was a crawl to 100. I then backed off to about 65 and slammed it again and the power wall was hit quicker and quicker as I repeated it. After the 5 or 6 WOTs, I was left with about 50% power, I set cruise control to 65 and the 50% remained for about a full minute. It then reduced to 33% reduction, then just 4 bars, then 2, then 0. It FULLY cleared to 0 bars after roughly 5 minutes of driving. I was at 90% SoC when I did my "testing."

Thankfully I hit the 50% limit when I did as I saw a motorcycle cop right around the bend when I slowed into 65 MPH on cruise control!

Well at least you didn't get a DTC for damaged contactors as part of your "testing."

So far, my feeling is that I'm less power-limited at more normal speeds and when zipping around town. I haven't pushed the car in the same way you have .... yet.

 

[Neil4Real]

Well at least you didn't get a DTC for damaged contactors as part of your "testing."

So far, my feeling is that I'm less power-limited at more normal speeds and when zipping around town. I haven't pushed the car in the same way you have .... yet.

Yeah, I'm feeling the same when not pushing it. I'm not getting the gray bars as early before when just cruising on the highway. Not a true removal, but definitely better for normal driving!

 

[Southern92]

Sounds like we might need someone with post-recall software to head to a track & get a timed run!!!

 

[Killerkg]

I kind of feel that the software update, all it does is prevents catastrophic failure and allows the car to continue to drive to the dealer to replace the part. Thats all it prevents instead of stopping the problem altogether.

 

[DevSecOps]

I kind of feel that the software update, all it does is prevents catastrophic failure and allows the car to continue to drive to the dealer to replace the part. Thats all it prevents instead of stopping the problem altogether.

That's half true. We have people with the recall software that are still having catastrophic failure and cannot drive the vehicle. It's hit or miss.

 

[Killerkg]

That's half true. We have people with the recall software that are still having catastrophic failure and cannot drive the vehicle. It's hit or miss.

Oh, that's not good to hear

 

[Mike G]

That's half true. We have people with the recall software that are still having catastrophic failure and cannot drive the vehicle. It's hit or miss.

WOTiddy, WOT, WOT, WOT!!!

 

[HuntingPudel]

That's half true. We have people with the recall software that are still having catastrophic failure and cannot drive the vehicle. It's hit or miss.

Yeah, I am hoping that when mine dies the 22S41 software hits rather than misses. Keeping my paws crossed. ?‍?

 

[DevSecOps]

Yeah, I am hoping that when mine dies the 22S41 software hits rather than misses. Keeping my paws crossed. ?‍?

Last time I had a one on one with your dog, over doughnuts, he mentioned that your shots on those ducks happens to miss a lot more than hit these days.

 

[HuntingPudel]

Last time I had a one on one with your dog, over doughnuts, he mentioned that your shots on those ducks happens to miss a lot more than hit these days.

ROFL! ???

I hope that you’re not hearing of more misses than hits from 22S41. ??

 

[Yetanotherford]

This is what, three failures, all within DAYS of installing Ford's software "fix"? Three is not a big number just yet, but these failures all came awfully fast after the software update. That probably means something.

It may not be "false" positives, it could be conservative predictions of failure, or just buggy software. But most likely DevSecOps is right, and this software fix should be avoided until you want to start dealing with a big service job on your Mach-E.

I plan to wait until the dealers gain some experience, and service department capacity opens up some. Maybe I'll even wait to see how the 'robust' part performs in early installations, and see if Ford perhaps replaces it with something even better.

Three almost-immediate failure messages MIGHT just be random chance, but I doubt it. No software fix for me. Not yet.

Yup, installed the recall update Tuesday and my GTPE was hauled out of the parking lot at work last night, will be talking to the dealer it was towed to (very successful tow, thanks to info from this forum!). I live in central Florida so no elevation changes, just HOT. It rode to work fine and got the Stop Safely Now when I went out to start it last night. Frustrating.

 

[Mike G]

Yup, installed the recall update Tuesday and my GTPE was hauled out of the parking lot at work last night, will be talking to the dealer it was towed to (very successful tow, thanks to info from this forum!). I live in central Florida so no elevation changes, just HOT. It rode to work fine and got the Stop Safely Now when I went out to start it last night. Frustrating.

So what are the chances that the recall software got applied to a car that already had sufficient contactor degradation that the new lower 'damage threshold', for want of a better term, just made the car arrive at the SSN earlier than it might have otherwise?

Put another way, it's possible that the cars that suffered SSNs shortly after the recall software was applied probably already had issues that the new lower limitations uncovered.

 

[mkhuffman]

So what are the chances that the recall software got applied to a car that already had sufficient contactor degradation that the new lower 'damage threshold', for want of a better term, just made the car arrive at the SSN earlier than it might have otherwise?

Put another way, it's possible that the cars that suffered SSNs shortly after the recall software was applied probably already had issues that the new lower limitations uncovered.

I don't believe there is a new, lower threshold for SSN. Either the contactor is stuck open/closed, or it is not. It does seem strange to see cars getting SSN without a SVS after the software recall was applied. It suggests the "almost" failure condition the software measures doesn't always exist prior to a failure, or the measurement method isn't that precise. I bet it is a little of both: hard to measure and sometimes it just fails without warning.

 

[Yetanotherford]

So what are the chances that the recall software got applied to a car that already had sufficient contactor degradation that the new lower 'damage threshold', for want of a better term, just made the car arrive at the SSN earlier than it might have otherwise?

Put another way, it's possible that the cars that suffered SSNs shortly after the recall software was applied probably already had issues that the new lower limitations uncovered.

Possible, but i drove it 74 miles on Tuesday and 87 miles on Wednesday then she bricked after driving 37 miles and parking for 8.5 hrs with no prev warnings ?

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