Safety Recall 22S41 - 2021-2022 Mach E - HVBJB Recall [high voltage battery main contactors may overheat]

[SWO]

No not how many are susceptible but how many have had the issue and have had to go for repair?

It's on 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. Ford is aware of one VOQ alleging a no-start and listing DTCs related to this concern."

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[zahidcaglioz]

And still we dont have any clarification for European cars right?

 

[RickMachE]

No not how many are susceptible but how many have had the issue and have had to go for repair?

No. No one knows. People need to relax and wait for the list of vins.

 

[RickMachE]

And still we dont have any clarification for European cars right?

All potentially included.

 

[machefan]

49k

The recall affects 48,924 MME's

Sounds like most to me.

 

[SashaLondon]

so far 286/48924 = 0.58% of cars so far effected. So more chance of getting a flat tyre IMHO. However it's worth playing safe.

 

[rcechinel]

so far 286/48924 = 0.58% of cars so far effected. So more chance of getting a flat tyre IMHO. However it's worth playing safe.

By that same logic, why accept the fix then?

 

[P. T. Magoo]

I guess this is when I'll touch wood and say I'm happy...

This is not the information I was looking to find here, but thank you for sharing nonetheless.

 

[yngwenli]

BTW, who makes the batteries for the MME?

LG also makes the batteries for the MME...Hence, my concerns being a previous Bolt owner as well that I can give up more range, most things as long as the thing doesn't spontaneously catch fire while parked (keep that battery buffer that the Bolt didn't seem to have!).

I haven't heard of Bolt's catching fire after the battery swap so maybe they found the root cause after all.

 

[yngwenli]

And still we dont have any clarification for European cars right?

I think all European cars are from the Mexico plant as well (maybe look at the sticker on the driver side of your car).

From what I know, ALL Mexico plant cars are affected at this point and the only ones not in the recall are the ones made in China. I think the China one uses a different battery actually and there are probably other differences.

 

[RickMachE]

so far 286/48924 = 0.58% of cars so far effected. So more chance of getting a flat tyre IMHO. However it's worth playing safe.

I believe that's flawed math. the math should be 286/100,000. Just because only 49,000 are potentially involved in the recall, we don't know yet why the other 51,000 aren't. Because they only have RWD? Don't know.

 

[generaltso]

I believe that's flawed math. the math should be 286/100,000. Just because only 49,000 are potentially involved in the recall, we don't know yet why the other 51,000 aren't. Because they only have RWD? Don't know.

I think it's because it's a US recall (so far) and the other 51,000 MMEs were sold outside of the US.

 

[Shayne]

I thought I had this issue, they called today and told me it was just the 12v bat dying needing to be replaced so lesson learned, I shouldn't jump to conclusions. I mean google tells me I have cancer everyday I wake up a little grogy anyway....should've learned then.

How old is your car for the 12V battery to be replaced already? Is that time frame common for your area? Mine completely died in a year and they told me the same thing. Time will tell and it took 2 weeks on the new 12V to tell it was a symptom not the cause. The 12V is a cheap try for sure hope it works for you.

Should be required reading for Ford Engineers.
When I see NHTSA documentation using expressions like “not robust enough” and “using software to prevent further damage”, I can only surmise the contactors are doomed to eventual failure.

If they were built under spec'd I would be surprised. Doesn't sound like a few defective parts creeped thru either. Sounding a lot like an engineer was so far out on his cals that he eat up their safety factors. That's a big oops and normally a logic mistake. We all love to speculate. There is a bit of sherlock in everyone.

"More robust contacts" seem to be required and it has been determined that it is a safety issue. If it fixes my stuck open in the cold I am on board when they start changing the part for a more robust one. OTA software fix? May have to take a 5 second rule time out on that one for a bit.

Here it is straight from Ford.

Ford: Mustang Mach-E Recall FAQ.
https://media.ford.com/content/fordmedia/fna/us/en/news/2022/06/15/mustang-mach-e-recall-faq.html

Q. What is the cause of the issue?

A. The design and part-to-part variation of the high voltage battery main relay switch is not robust to the heat generated during DC fast charging and multiple wide open pedal events.

Are they seriously trying to infer that this is the only possible combination in which this can occur? Is that what everyone did who has reported it here? We recommend you avoid DCFC followed by quick accelerations to limit this condition from occurring may be a wee bit better. Not like finger point at a select few is going to change/help the problem. I presume the select few are all demo cars anyway.

P.S. Appears to be self admin on this thread as users keep explain how we should behave. Works for me but the rules keep changing.

 

[agoldman]

so far 286/48924 = 0.58% of cars so far effected. So more chance of getting a flat tyre IMHO. However it's worth playing safe.

Isn't that just the ones reporting actual problems or symptoms at least. The rest are all sitting ducks in effect and will need the patch regardless. It's not like only some production got the weak contacts.

 

[yngwenli]

I think it's because it's a US recall (so far) and the other 51,000 MMEs were sold outside of the US.

Ahh, makes sense. I guess the China numbers are not even in that 100k. We can probably assume the others will be included by their own local form of NHTSA soon.

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