Way too DANGEROUS!

[Snakebitten]

My F-150 has an annoying issue with auto hold where it sometimes... doesn't. The light comes on and the truck holds initially, but it kind of does this "bump" where it moves forward slightly at short intervals, like the auto hold is only barely holding and for a moment it lets go then holds again.

I found others that had this issue and it sounds like there may be weak pressure in some portion of the transmission that manages the auto hold (I always thought auto hold was your brakes but sounds like it may not be, I haven't looked into it further though).
.

Classic description of a faulty auxiliary transmission pump in the 10r80.
It's the electric pump that takes over when ICE turns off. If it's faulty, it fails to keep adequate pressure on the clutch pack and the truck will move. It can be gentle or rather violent, depending.

Sponsored

 

[rreddy3]

I want to add another thought before being trashed for seeming to minimize OP's concerns ...

At the end of the day, inspite of all the electronic wizard stuff these cars have going on, they are cars. And we are drivers. It is our job to control the machine and not rely entirely on the magic electronic stuff.

No, I am not casting fault on OP. I'm simply saying when I, for example, sit in the pilot, command seat, of this car, I must be prepared to immediately take control of the machine if the electronic wizardry lets me down.

I do hope that whatever issues OP and others are experiencing are resolved so they can have an enjoyable owner experience.

?

 

[dtbaker61]

just gotta say... I've never had 1-p disengage....

I have had HVBJB replaced, and shortly thereafter disabled auto-updates. still running Powerup 4.3.4. no surprised or changes.

I'd suggest you request dealer FDRS update ALL modules to some known stable builds.

 

[digink]

Imagine driving down the road. You pull off the accelerator on your Mach E to slow down and eventually brake. It works. As you creep closer to the stopped car in front of you, your mach e continues to slow until OUT OF NOWHERE your one-pedal regen braking fails and your mach e -- at a time when it should be stopping -- lurches foward, throwing you into whatever is in front of you! It's scary. And Ford NEEDS to fix this known issue immediately.

After I got the HVBJB recall last month, my mach e would randomly lose the ability to slow and brake using one-pedal regen. It's a terrifying experience thinking you are about to slow but suddenly you're going faster. luckily, it hasn't resulted in an accident like the one described above. But I dont feel safe having my family drive a car that doesn't stop the way it's supposed to. I took my vehicle into the dealer three times. After updating every available module, they escalated the matter to Ford national techs. As communicated to me by my dealer, ford is aware that the HVBJB recall causes one-pedal drive faults and they do not have a solution. Yet they are posting here about available goodwill "gifts" for those who go get the recall within a certain time. Is Ford encouraging Mach e owners to get the HVBJB recall knowing that it will result in an unsafe car with a whole other problem?

I had zero issues with this vehicle before this recall. I guess the honeymoon period is over. What can I do? The dealership said there is literally nothing they can do and Ford acknowledges this. @Ford Motor Company I just want this car to work as it should and did before the recall.

Adding my experience to this thread.....

I had my HVBJB recall serviced last week, and I have just had the 1PD fault twice in less than 30 miles.

Never had the 1PD fault previously since owning the car. To me the correlation between 1PD fault and HVBJB recall is just simply too strong.

My previous thread is here:

https://www.macheforum.com/site/threads/1-pedal-drive-fault-after-hvbjb-replacement.35286/

 

[21st Century Pony]

Luddite here (I guess...) who has never yet tried one-pedal drive and frankly doesn't see the need to do so. My Mach E seems to like being driven the classic way, with all its built-in pedals in action.

Ditto for Blue Cruise when it begins to cost me in a year or so... nah, not worth paying for it IMHO.

 

[phil]

just gotta say... I've never had 1-p disengage....

I have had HVBJB replaced, and shortly thereafter disabled auto-updates. still running Powerup 4.3.4. no surprised or changes.

I'd suggest you request dealer FDRS update ALL modules to some known stable builds.

Same, more or less.

I have never once had a problem with one-pedal. Stopped accepting software updates at v3.5.3, which has been stable for me for a year and a half now. HVBJB died and replaced shortly before the recall.

Software updates are not a good thing. Not for this car. Not yet.

 

[rreddy3]

Luddite here (I guess...) who has never yet tried one-pedal drive and frankly doesn't see the need to do so. My Mach E seems to like being driven the classic way, with all its built-in pedals in action.

Ditto for Blue Cruise when it begins to cost me in a year or so... nah, not worth paying for it IMHO.

Somewhat off OP's original thread, now that I am five weeks deep into electric Mustang ownership, while I have tried 1 pd I tend to concur it doesn't seem to me to necessarily add anything to the party.

No disrespect to the one pedal fans, 1 pd seems to me more like a party trick than a must have feature. I find the car drives just fine with two pedals. Frankly I think it is smoother. Yes, I know, you can feather the throttle in 1 pd to modulate the deceleration rate, but at the end of the day 1 pd is more like an on/off switch than a smoothly controlled two pedal drive. That said, I do a smooth job with 1 pd, you just have to feather it just right to avoid the herkie jerky. But ... I can tell you that my wife, and my "non" hunting pudel, both prefer two pedals to the one pedal.

Interestingly, to me, was seeing that brake coach almost always gives me 100% on the capture in 2 pedals when I'm forgetting my Mustang is electric and I'm just driving it the way I drove my Acura RDX which was a great car and was traded for the Mustang electric. To my point, the Mustang can be driven like a regular car and still deliver the benefits of an EV. That is one of my take aways, five weeks in, you can drive these things like regular cars, they just happen to be electric instead of ICE.

 

[Shayne]

I wonder if it only feels like the speed increases. If you take your foot off the accelerator, the car should no longer be accelerating and would then travel at constant velocity in the absence of friction and wind resistance. In reality it should slow a bit because of those factors. Was your foot completely off the accelerator?

Agree but because of the lack of expected deacceleration you are traveling faster (longer distance in that time) than you expected to travel during the human reaction time to correct the fault. That should not be expected and should not be the case.

The entire regen / physical braking system is "fly-by-wire" - it's all controlled by software. The brake pedal is basically a dimmer switch.

Software will fix it, and I'm sure Ford is taking it seriously.

At least there is an easy workaround for now, but drivers need to be aware sooner rather than later.

1PD here all the way, not going to stop using it, way better than that old break pedal thing. Using just the accelerator pedal as the dimmer. Change for the better for sure here.

I normally slow down and creep up; it is so easy to feather the accelerator on this tech. May be worth doing for a bit. Make sure it will regen stop long before you need it and then creep. Comes from driving old ones where you are never sure . Good practice always not to want to slam into the back of the guy in front of you at any great speed. But ya needs fixing.

I guess this may slam OTA to off again. Wow the beat goes on. Thinking they do not need to rush to adopt the new abs update. This can not be from the February abs update must be new? Me I am on 6.4 with a tesla.

 

[hack-e]

I had my HVBJB repaired in late Oct 2023 and 1PD has been normal before and after the repair. That means the only time 1PD does not work is when my HVB SoC is at 100%, which is normal.

Sad to hear OP's experience isn't he same as mine.

 

[Duncs]

Can you post a copy of this???? Can you post which updates the dealer did?

Dealer updated every module that was available to be updates. other vehicles might have different updates available but whatever could be updated on mine, was.

Once I get the "attached communications," I'll let you know..

 

[Mike G]

Dealer updated every module that was available to be updates. other vehicles might have different updates available but whatever could be updated on mine, was.

Once I get the "attached communications," I'll let you know.

It's a powertrain software fault. It will eventually be addressed with an update.

 

[Duncs]

It's a powertrain software fault. It will eventually be addressed with an update.

Hopefully that "eventually" isn't the same eventually in "bluecruise updates will arrive eventually"

 

[TheSteelRider]

Ouch! I'm not a 1pd user, but I feel your pain. I was burned badly by the Front Camera Fault so I know what it is like to be months with a hard failure with no fix in sight and literally no communication from Ford.

Again it isn't so much the tech but Ford's lack of basic communication skills that is the real problem. Even though we are 2PD all day, every day, I'm definitely not doing the recall until this is water under the bridge.

Random thought, could this be the real issue behind BC1.4 pause?

 

[Shayne]

I had my HVBJB repaired in late Oct 2023 and 1PD has been normal before and after the repair. That means the only time 1PD does not work is when my HVB SoC is at 100%, which is normal.

Sad to hear OP's experience isn't he same as mine.

I have regen at 100 ?‍ maybe a whisper thing?

 

[QueasyLand]

I have regen at 100 ?‍ maybe a whisper thing?

I only drive in Engage, and never charge to 100% (only 90) so not a 100/whisper thing for sure. I haven't seen it again but will see if I can reproduce it. The few times I have been at 100% OPD still works (isn't that part of the point of the battery buffer vs e.g. the Leaf?)

Sponsored