Road trips and HVBJB issue

[RKinWA]

High speed appears to be the most common cause, and even if the failure occurs at a lower speed, previous high speed driving could have been the cause. It isn't the only cause, of course, and I am going off data Todd collected last year prior to the new HVBJB being implemented.

If you drive at 85+ mph, and maintain that speed up a long grade, it is the best way to kill your HVBJB IMO. So if you want to kill it, do that.

I almost never exceed 80 mph, and I am still on my original 2021 Job 2 HVBJB. Coming up on 35k miles now...

Good perspective. My previous MME was a used 21 GT with 15k miles. After I bought it I found out it had been sold back to the dealer because of an HVBJB failure, and had been replaced right before I bought it. Now I have a new 22 GTPE (Nov manufacture date) and am not worried about it. With the GTPE there isn't anywhere I could drive where I could WOT for 5 seconds, at less than 4 seconds I am already keeping up with traffic, and nowhere around me is the speed limit over 70, so I will never see 85. So that's even more reassuring.

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[Avelli]

FWIW, I was averaging 70-75 mph for 30 minutes before it happened, on a very flat freeway. High speed and incline had nothing to do with it.

 

[thekat03]

FWIW, I was averaging 70-75 mph for 30 minutes before it happened, on a very flat freeway. High speed and incline had nothing to do with it.

I am assuming there is an underlying degree of variability that makes some cars more prone than others, regardless of how we drive, and those of us who have a more assertive driving style may face worse odds as well. I wonder if it also is accumulative, so while it may hit when we are driving at more sedate speeds, prior joyrides slowly increased risk. So many questions. Hopefully Ford got some good answers out of Heisnuts' driving and the 5 HVBJB's he had in his car, along with all the other cars that had failed HVBJB's, so they can continue to improve it.

 

[middleview]

Been discussed many times before. A lot of the "concerns" that people have about things is due to knowledge gained via online forums and such. In other words, the HVBJB wouldn't be of concern to you, absent a failure, if you didn't know of the potential for it to fail. No one has stats (except Ford), but like many issues with cars and trucks the percentage of failure is very low. Is it 5%? 3%? Less?

We've put close to 20,000 Mach-E miles on in 2 years, trips to / through about a dozen states, and have zero concern of it failing. And that's with reading all the doom and gloom online.

That was me until Friday morning at 3:30am ?. But it's fixed now so I am back with you, looking forward to picking it up and driving it home, but I do wish I didn't have that extra 20-hr road trip to do for the privelege!

 

[Shayne]

That was me until Friday morning at 3:30am ?. But it's fixed now so I am back with you, looking forward to picking it up and driving it home, but I do wish I didn't have that extra 20-hr road trip to do for the privelege!

Don't worry you are in a small percentage that get shafted. Too much the ethics on this problem and the trying to defend it. No spirited driving for this mustang it puts you in a small percentage and can happen numerous times. Hoping the 2nd time is the charm for me but who the heck knows as the driving style will not change after all these years.

@Ford of Canada ship us a good one this time please. Bin me "the" part.

 

[DR.J56]

The anxiety threads like this induce is worse than the actual failure. My anxiety was elevated before mine failed. The wait for the car to be looked at (2 weeks) was longer than the repair and that didn’t help. The day the parts showed my service advisor said it would be ready tomorrow. He didn’t lie, they worked on it all night and I got the call in the morning to come get the car.

I’m sorry if you have a bad experience with your service. You should change dealers.

Edit: I left out above the wait time was actually a week, not the 2 they initially said.

 

[HuntingPudel]

OK, now that I have had an SVS with an SSN while I was sitting in line waiting for a service advisor at the dealer, I can say this: I am not afraid that this will happen again. I know it’s going to happen again. My failure was from a 3/4 throttle freeway loop that followed stop and go city traffic. The actual SVS message appeared after I was on the freeway and had set the ACC to 72. The car was accelerating under ACC in the mid 60s when the message displayed. So, it’s gonna blow up again, but I am not afraid it’s going to happen. ?‍?

 

[Shayne]

OK, now that I have had an SVS with an SSN while I was sitting in line waiting for a service advisor at the dealer, I can say this: I am not afraid that this will happen again. I know it’s going to happen again. My failure was from a 3/4 throttle freeway loop that followed stop and go city traffic. The actual SVS message appeared after I was on the freeway and had set the ACC to 72. The car was accelerating under ACC in the mid 60s when the message displayed. So, it’s gonna blow up again, but I am not afraid it’s going to happen. ?‍?

No sense for fear it is just a bummer going through the whole process let alone it happening on a trip. Trying to get through it as quick as possible this time just want it gone.

First gen HVJB's should make sure they have enough speed and distance before pulling out into oncoming traffic to pass with this one. That is when the IPC lit up this time for me (side by side, no WOT, had just accelerated) it was safe and got by no problems; had speed and distance before pulling out because I read this forum ? . I say accelerating 55 to 80 mph smooth pull no WOT. First half I drove it 45 mph taking the back roads so it was warm when I came back on the highway? Drove a short distance after and not driven it since; did not note a huge power loss but coasted in. Was charged then under the cover since and glad it happened close to home this time? Will be using it this week running for groceries (50 miles) so will see how it has changed ?‍. Won't be passing now for awhile ?. Be safe out there.

 

[Mirak]

Shouldn’t there be an option for “I’m far more worried that the public chargers I need will be broken”?

 

[Vulnox]

So I am taking a trip this weekend and taking our MME. Only one charging stop and it's a fairly short one.

If I were to get the warning, I think the SVS, does it let me keep driving even if I shut down the car and start it back up the next day and try to make it home? I understand the point of the SVS is that it starts detecting higher resistance on contactor which could indicate a failure is coming, and I also hope I never have to deal with it, just trying to understand how SOL I am if I am 5 hours from home and get the message. Can I likely limp home, understanding I may get SSN, or will it just lock the car down after I next turn it off after SVS?

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