One Pedal Drive Issue

[TruWrecks]

Could be why I never feel anything. I only charge to 90% so regen has somewhere to put the juice. That was something I learned from driving the Bolt. If it was fully charged regen braking was disabled.

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[Maquis]

I have charged to 100% when I was about to depart on a long trip. I never noticed anything different with 1PD / regen when I departed fully charged.

I assumed it was because even charged at 100%, there is still unused battery capacity. ?‍

 

[zhackwyatt]

I have charged to 100% when I was about to depart on a long trip. I never noticed anything different with 1PD / regen when I departed fully charged.

I assumed it was because even charged at 100%, there is still unused battery capacity. ?‍

There is, a 10% hidden buffer. We don't know if it's on the top or bottom end. Most likely split between the two.

 

[Jimmy2]

Anybody?

I tried it like you said. I have the AWD X.
No shake. No vibration. No noise. No wobble. No issues at all.

 

[jdsimard2012]

It's the deceleration when releasing the accelerator where I'm getting the shudder. It shakes really bad. Has to be something with the regen. Then it goes away after driving a while in one pedal mode.

Interesting - I don't get that on my car.

 

[FME]

I decided to wait for the car I ordered.

It's due the last week of July if they hold to their estimate. I guess I'd rather start new than with the demo car.

Not waiting for the tax credit would have been nice but I've waited this long I can wait another few weeks.

Thank you guys for trying this for me. The only time this has happened is when the battery was at 100% and I went right to one pedal drive and up to 50-60 mph and let go of the accelerator.

 

[CHeil402]

Thanks for that information.
You might be on to something.

Both times I noticed this the car was charged to 100% and as drove it, battery percentage went down and issue went away.

Actually the last time I drove it the percentage was 100% and showed like 320 miles remaining. I was thinking that's a lot better than advertised. The last person to drive it must of been very easy on it.

Makes sense… 100% charge and trying to force more into the battery. It doesn’t like it. Now I think I read something about this before.

If the battery is at 100%, then likely regen braking is disabled until the battery is "receptive". As a result all braking effort is achieved via the friction brakes. If the friction brakes haven't been used in a while they may have rust and the sounds your experiencing may just be a result of the rust being scraped off. It likely goes away after driving a little bit because: 1) the friction brakes have been sufficiently "cleaned" and 2) the battery charge has now decreased to re-enable regen braking.

I believe I've read about this on Tesla's where they won't enable one-pedal driving braking at all with a completely full charge. At least Ford's braking is smart enough to blend between friction and regen as needed (even when pressing the brake pedal it will still blend, unlike Tesla where the brake pedal is all friction).

Trains have a similar concept, the regen braking energy can only go back into the catenary if the line is receptive, otherwise it will just get burned off in a big resistor bank (which our cars don't have, so regen braking is just disabled).

 

[wolmart2]

I am glad to see that most of the Mach E drivers are not having this issue. Unfortunately I am. MY 2021 Premium AWD shutters a bit when decelerating. It seems to be less prevalent at slow speeds but always there above 50 mph. I tried to explain this to the dealer when I had it in for service, but their remark was that it's inherent to one petal. I should use my breaks. (Not the resolution I was looking for)

 

[ctenidae]

... it's inherent to one petal. I should use my breaks.

That's utter and total hogwash! Your advisor is a shill for the brake pad company, clearly.

I'd guess either it's CHeil402's rusty brake issue (seems likely) or you've got a bad sensor telling the regen system the SOC so it can't decide if it can charge or not.

You shouldn't keep your car charged to 100%, in any case. I kept my Tesla set to 90%-95%, and only charged to 100% if I knew I was going to want/need the range. It's better for the battery, and better for regen braking.

My Tesla often reduced or disabled regen, but it usually let up quickly as things warmed up and the batteries lost some charge.

 

[Ford Motor Company]

I am glad to see that most of the Mach E drivers are not having this issue. Unfortunately I am. MY 2021 Premium AWD shutters a bit when decelerating. It seems to be less prevalent at slow speeds but always there above 50 mph. I tried to explain this to the dealer when I had it in for service, but their remark was that it's inherent to one petal. I should use my breaks. (Not the resolution I was looking for)

Good afternoon! Thanks for reaching out to us about your Mach-E's one pedal drive performance concerns. I would be happy to look into this on my end. To get started, could you please send over the name/location of your purchasing Ford dealer and your Mach-E's VIN.

 

[wolmart2]

Good afternoon! Thanks for reaching out to us about your Mach-E's one pedal drive performance concerns. I would be happy to look into this on my end. To get started, could you please send over the name/location of your purchasing Ford dealer and your Mach-E's VIN.

Ford of Smithtown
440 Middle Country Rd,
St James, NY 11780

VIN: 3FMTK3SS9MMA05932

 

[Ford Motor Company]

Ford of Smithtown
440 Middle Country Rd,
St James, NY 11780

VIN: 3FMTK3SS9MMA05932

Hi, thank you for your response. Can you send this info in a DM and I would be happy to take care of your concerns privately.

 

[ctenidae]

Hi, thank you for your response. Can you send this info in a DM and I would be happy to take care of your concerns privately.

Aw, come on - we like to air everything out here- all the dirty laundry, all the time! Probably more efficient to not have a public conversation, but we expect a full report on our desk by close of business on the eleventeenth. With sticky notes and colored pens.

 

[Kirch]

When I take the Mach E (Premium, AWD, LR,) out for the first time of the day with it in Unbridled Mode/one pedal drive and accelerate to 65-70 mph and let go of the accelerator the car and steering wheel shake as though there is a warped rotor/rotors. It's actually pretty bad. Only 3000 miles on the car.

After driving a while this issue seems to go away. Not sure why it would go away when it warms up.

Anyone else experience this issue?

Thanks

did you ever figure out why it did it? I have a 2021 and ford thinks I’m crazy when I say it shakes sometimes on one pedal drive… it also eats my rotors as I’m on my 3rd set in 8 months.

 

[FME]

This happened to me on my 21. Didn’t have the same conditions yet in my 24.

If you’re battery is charged to 100% and you release the accelerator, it has something to do with regenerative braking and the battery not being able to take the power.

I may be wrong but that’s what I seem to remember.

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