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

[billy_at]

Is this one of those tricky dealer mods we discover when we pick up our MME? "Hey, I didn't order tinted windows, nitrogen in tires, or chicken wings"!

Believe it or not, this is not just some dumb image I made up - this was an actual Ford marketing campaign for the MME!

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[rcechinel]

You're whipping yourself and everyone else into a frenzy based on your imagination

Isn't that what this forum is for? We already know that non-forum members Mach-E owners live longer, and choose to stay here anyway. ?

 

[billy_at]

Sorry to say, but you're speculating and don't have a clue. Why are you assuming the software "fix" only kicks in to reduce power right at the point of failure?

Just read the recall:

The updated SOBDMC software (LJ98-14G069-AXG, LJ98-14G069-AZG, from Recalled Component : LJ98-14G069-BBG, LJ98-14G069-BDG) will monitor contactor
temperature and intelligently reduce battery power to prevent damage to the contactor.

The updated BECM software (NJ98-14C197-AE, NJ98-14C197-BD) will monitor contactor resistance to identify an overheated contactor and reduce vehicle power to prevent further damage.

 

[Mike G]

This is a great resource. Unfortunately it reveals that my Mach E is on the recall list for 22S41 - MAIN HV CONTACTOR WELDING

 

[macchiaz-o]

Believe it or not, this is not just some dumb image I made up - this was an actual Ford marketing campaign for the MME!

Fact!

Scroll down to "Frunkin' Shrimp" from February 3, 2020:

https://www.macheforum.com/site/threads/fords-mustang-mach-e-press-releases-all-of-them.866/

 

[redranger04g]

Gods are a creation of mankind. I simply have no belief in one fewer gods than most.

Isn’t that a Ricky Gervais quote?

 

[billy_at]

Fact!

Scroll down to "Frunkin' Shrimp" from February 3, 2020:

https://www.macheforum.com/site/threads/fords-mustang-mach-e-press-releases-all-of-them.866/

I still want to know more about this! Why isn't it something normal like beer bottles in ice? Or sandwiches in wrappers?

Who eats buffalo wings (or SHRIMP) directly off the interior of a car?!

 

[mburtsvt]

No, probably not. We have no reason to believe the two are linked.

The scenario that brings about this HVBJB problem is unusual and rare. It doesn't happen to most cars, and it doesn't happen in most usage patterns (by "most" I quite literally mean 99.5%). The recall says power will be limited - temporarily - only if this scenario is detected.

Reducing performance across the board is not what the recall describes, and there's little reason to think that it would do anything to address the problem. And remember that this is not a GT-only problem.

I'm going to respectfully disagree. I think the WOT, (wide open throttle), condition that a lot of GT, (and others), owners do will cause the situation described. A software update would detect this and "throttle back" the demand for WTO.

 

[Pushrods&Capacitors]

What is a "wide open pedal event" ? Just flooring the car at like 90 mph for 5 -10min?

Sounds like you need to DCFC and then hit the highway and floor the car for this issue to show up?

Fingers crossed for an IPC buzz noise software update soon! That's been the most annoying thing for me with this car.

No, it doesn’t have to be for minutes at a time. Wide open pedal event is the same as WOT, or, wide open throttle. Can be for any duration, even just 1-2 seconds. If Ford is overly cautious they may reduce power significantly during any full throttle events, who knows?

This is a band aid software fix to cover for a deficient part that they currently have no readily available replacement for. Bad news all around.

 

[billy_at]

Suggestions from the press release:

1. Sign up to bring a gameday spread best served chilled? Top off the frunk with some shaved ice to keep veggies, dips and even shrimp cold and ready to eat.
2. Feed an entire team by loading the front trunk with hot wings: you can hold more than 1,000 regular sized wings with the extra storage space. And don’t worry about the sauce – you can hose down the front trunk when you get home.
3. Play a game of long-distance cornhole or show off your passing skills by challenging friends to a “closest to the front trunk” contest.

 

[SWO]

In 200 years they are! No; it's really likely a non-issue for non lead foot drivers (most people). But means everyone is slowly being effected. The software solution will attempt to control that aspect I guess.

Don't see where you are inferring that. My take is that there are some bad parts out there (not necessarily all of them) and this update monitors for failure in the part and presumably takes action so you're not left stranded on the side of the road in the case of an impending failure.

 

[ponEpwr]

No, it doesn’t have to be for minutes at a time. Wide open pedal event is the same as WOT, or, wide open throttle. Can be for any duration, even just 1-2 seconds. If Ford is overly cautious they may reduce power significantly during any full throttle events, who knows?

This is a band aid software fix to cover for a deficient part that they currently have no readily available replacement for. Bad news all around.

Sounds like great news for GT/GTPE owners..... Not!


Hopefully they are still able to meet their published hp numbers and 0-60 time. Wonder if this will turn into the early 2000's mustang Cobra scenario.

 

[billy_at]

I'm going to respectfully disagree. I think the WOT, (wide open throttle), condition that a lot of GT, (and others), owners do will cause the situation described. A software update would detect this and "throttle back" the demand for WTO.

No, it doesn’t have to be for minutes at a time. Wide open pedal event is the same as WOT, or, wide open throttle. Can be for any duration, even just 1-2 seconds. If Ford is overly cautious they may reduce power significantly during any full throttle events, who knows?

I mean, I don't know what to say to you. You can believe that if you want, but it's obviously not true that just flooring the pedal will make this happen. Come on - every MME owner floors the pedal sometimes. Yet only a handful of people have the problem. And Ford mentions a link between DCFC and flooring the pedal. We don't know what that link is, but it's clearly not as simple as just flooring it. We know that both from the recall and from empirical evidence.

And we even know of plenty of people (through surveys of forum members) who DCFC all the time and floor the pedal all the time, and have never had this problem.

Just relax! Everyone! I mean, don't relax about the recall itself - the problem itself is definitely lame and unfortunate. But relax with the wild speculation about permanent all-the-time performance reductions.

 

[scoopman]

I'm going to respectfully disagree. I think the WOT, (wide open throttle), condition that a lot of GT, (and others), owners do will cause the situation described. A software update would detect this and "throttle back" the demand for WTO.

The failures provided in the recall did not include distribution by trim, and so we don't know how many of the failures were GT/GTPE models. My spidey sense tells me it is a disproportionate amount that is far higher than the product mix of those trims sold. Just keep this in mind that I don't think the probability for GT/GTPE cars is 0.5%

 

[redranger04g]

It will be great if it is simply down to some incorrect calculation letting parts exceeded specified limits, however Ford have a poor history of having parts being chosen more by accounts than engineers so lets hope it does not turn out to be an intentional throttling band aid to compensate for parts not fit for purpose in an attempt to avoid costly repairs and limit it to only using a revised part for earlier vehicles to that fail further down the line.

I highly doubt Ford deliberately chose a part that was not fit for purpose. Why would they do that, it costs them more down there line. Also, every single car manufacturer (likely with the exception of super cars or high-end performance vehicles) chooses parts based on the accountant. No manufacturer is going to over-spec a part just because and increase the manufacturing cost of the car. As an engineer, there are plenty of safety factors built in such that parts are not chosen on the borderline of the specs. Point is, every component in the Mach E had to be approved by an accountant. This is actually a good thing, our cars would be far more expensive if just built by the engineers.

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