Not possible to turn off 1 pedal driving?

[CalDriver]

Letting fully off of the accelerator when using 1 pedal driving is like fully slamming on the brakes any time you need to brake at all. That's not how you do it.

You modulate the accelerator to control braking. This is something that takes a week or so to get used to, then it becomes second nature. No big deal.

Most car companies don't let you turn off regen because it causes a significant gain in range due to regen braking feeding to the battery. The EPA will penalize your range estimates if even the option of turning off regen fully is available.

It also causes your brakes to last the lifetime of the car and not need replacing. It's great.

This is only true if the vehicle doesn’t have blended braking. On vehicles like the Mach-E, hitting the brake pedal first (assuming you have OPD off) triggers motor regen it doesn’t activate the physical brakes at all. As a result, you can use motor regen for slowing down just as well as when OPD is on if you aren’t slamming the brakes. One of the drive modes even gives you a percentage indication of how much of your braking was done via regen versus using the physical brakes whenever you come to a stop.

The reason Rivian won’t let people disable OPD is because they made the choice not to spend the engineering time and possibly including the hardware needed to have a blended brake pedal, which means allowing people to disable OPD would necessarily result in a big hit to efficiency since no energy would be recaptured when the driver initiates a slowdown.

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[rvnxyz001]

Rivian did not create a brake system that is capable of blended braking, using the brake pedal means regen would not be happening resulting is more energy being used for the test (since none is captured back through regen).

They've implemented this for r2 , it is different from r1

 

[CalDriver]

They've implemented this for r2 , it is different from r1

Really? Hmm then I am at a loss why they wouldn’t enable the option. Like locking an adaptive suspension to a firm or soft setting instead of giving drivers a choice.

 

[mkhuffman]

This is only true if the vehicle doesn’t have blended braking. On vehicles like the Mach-E, hitting the brake pedal first (assuming you have OPD off) triggers motor regen it doesn’t activate the physical brakes at all. As a result, you can use motor regen for slowing down just as well as when OPD is on if you aren’t slamming the brakes. One of the drive modes even gives you a percentage indication of how much of your braking was done via regen versus using the physical brakes whenever you come to a stop.

The reason Rivian won’t let people disable OPD is because they made the choice not to spend the engineering time and possibly including the hardware needed to have a blended brake pedal, which means allowing people to disable OPD would necessarily result in a big hit to efficiency since no energy would be recaptured when the driver initiates a slowdown.

Lucid did the same thing. Lucid claims it is because it gives the driver better slowing control. Rivian claims they did it because when off road you need consistent control slowing the truck, and friction brakes are more predictable.

The truth is likely exactly what you posted. Blended brakes are difficult to engineer. Very difficult. So Lucid and Rivian took the easy route and used marketing talk to explain why. That is what I think, anyway.

They've implemented this for r2 , it is different from r1

Do you have proof your post is true? I have not seen it yet. Maybe you know something the rest of us don't.

 

[rvnxyz001]

Do you have proof your post is true? I have not seen it yet. Maybe you know something the rest of us don

We already discussed this , only words from head engineering for r2, he literally said word "blended"

https://www.rivianforums.com/forum/...o-turn-off-1-pedal-driving.60084/post-1038108

But you dont consider it as official
That's the only info , plus few articles I saw

 

[josh0]

I disabled 1-pedal driving in my Gen 1 R1T Dual today. It worked exactly as you’d expect.

Of course it also enabled limp mode, and maxed out my top speed at 50 mph, because it was actually a problem due to me managing to crimp the ODB cable for my Comma, but fortunately a hard reset got everything back in normal working order.

 

[mkhuffman]

We already discussed this , only words from head engineering for r2, he literally said word "blended"

https://www.rivianforums.com/forum/...o-turn-off-1-pedal-driving.60084/post-1038108

But you dont consider it as official
That's the only info , plus few articles I saw

Sorry, I am not trying to be difficult. It will be a good thing if the R2 has blended braking. It is just that over the years, unofficial discussions from Rivian people have not always been accurate.

And I am not being critical of Rivian because human beings make mistakes. Sometimes a feature is not released yet, or is only planned, and they talk about it like it is already available.

Anyway, no worries here.

I remain skeptical until there is definitive proof. That can come from an official statement from Rivian, or from a forum member who has tested and confirmed energy is added from only pressing the brake pedal. The latter is hard to test because you can't turn off 1PD.

Actually, the best way to confirm the R2 has blended braking would be if Rivian allows owners to turn off 1PD. It is pretty much guaranteed they will require 1PD as long as there is no brake blending. Once it can be turned off, bingo - there must be brake blending.

 

[rvnxyz001]

Actually, the best way to confirm the R2 has blended braking would be if Rivian allows owners to turn off 1PD. It is pretty much guaranteed they will require 1PD as long as there is no brake blending. Once it can be turned off, bingo - there must be brake blending.

They may decide not to allow drivers to fully disable it (or at least make regen even lower than current low) they probably think it is a feature everyone must like.

 

[Seano]

I admit, it took me a little while to adjust to 1 pedal driving (my wife loved it immediately). After switching to an R1S as a daily, I’ve come to really love it and leave regen on high - even in spirited driving.

It occurred to me, too: this is analogous to how I drive my sports car: low enough gear that lift off is actually slowing the car pretty well - so that back on the throttle takes off.

I really like the changes Rivian has made to the drive modes over the years, but always wonder with a software driven car: why not give more control to the driver for personalized settings - regen, drive mode settings, even UI.

End of the day, though - I got used to 1 Pedal driving, love it, actually.

 

[rvnxyz001]

I admit, it took me a little while to adjust to 1 pedal driving (my wife loved it immediately). After switching to an R1S as a daily, I’ve come to really love it and leave regen on high - even in spirited driving.

My wife hated aggressive regen on another EV we rented a while ago, and that car did not even have true one-pedal driving or come to a full stop by itself. She could only drive it comfortably in the lowest regen setting.

I’m okay driving with high regen myself, but as a passenger I really don’t like it. I’ve had several Uber rides in Teslas where the constant lift-off braking felt terrible, and once I even asked the driver to stop doing it. He basically said he couldn’t.

So if the R2 drives the same way as a Tesla, this could honestly be a deal breaker for us. I still need to test-drive it properly, both as the driver and as a passenger, especially in the lowest regen setting. But if it still feels like forced aggressive regen, I’ll probably cancel my order and let someone else get it faster.

 

[SwampNut]

I’ve had several Uber rides in Teslas where the constant lift-off braking felt terrible, and once I even asked the driver to stop doing it. He basically said he couldn’t.

I've only experienced this in ICE Ubers and taxis, and people from a particular region of the world.

 

[electruck]

I’ve had several Uber rides in Teslas where the constant lift-off braking felt terrible, and once I even asked the driver to stop doing it. He basically said he couldn’t.

some people are unable to treat the pedals as anything other than a pure on/off switch and are unable to modulate between fully depressed/released. you see this commonly with ICE vehicles as well. from what I have gathered based on the feedback from others, Rivian's accelerator tuning is a bit more progressive than Tesla's. I've never driven a Tesla myself but I have experienced numerous perfectly smooth rides as a passenger.

 

[SwampNut]

We traded a 2019 M3LR for the Rivian, so it was back to back driving. I noticed no change big enough to think about. But I'm also used to driving a wide variety of cars and motorcycles.

One of my ICE motorcycles has stronger engine braking than my EV motorcycle or Tesla's regen (if I downshift of course).

 

[Seano]

My wife hated aggressive regen on another EV we rented a while ago, and that car did not even have true one-pedal driving or come to a full stop by itself. She could only drive it comfortably in the lowest regen setting.

…

As with many things, sounds like what you are describing is operator error (Uber driver) - I, too, have been in cabs (ICE) with driver on/off accelerator surging and it’s enough to make you sick.

If the R2 is anything like the R1s (we have two and had a Gen1 originally) true 1 pedal driving to a stop works very, very well.

The hardest for me to get used to originally was descending our hill (9% grade, 3 mi mtn road): was a little strange to be on the accelerator while descending… typically I’d drop to second gear and (mostly) coast down the hill.

I never saw it as an adjustment to a failing or to a limitation to overcome: I truly like driving the Rivian now. And auto hold when at a stop is just awesome - one of our ICE cars have incorporated a hold with an extra push on the brake pedal, but I have to remind myself to stay standing on the brake on my Jeeps. And, when I drive the Jeeps down our road, I need to put them in 2nd or Low 1 or it feels like I just ride the brake the whole way.

 

[rvnxyz001]

some people are unable to treat the pedals as anything other than a pure on/off switch and are unable to modulate between fully depressed/released. you see this commonly with ICE vehicles as well. from what I have gathered based on the feedback from others, Rivian's accelerator tuning is a bit more progressive than Tesla's. I've never driven a Tesla myself but I have experienced numerous perfectly smooth rides as a passenger.

Yeah, it takes time to learn, but that is exactly my problem with it. Lifting off the accelerator and expecting the car to roll is natural. Lifting off and having the car immediately "brake" is not. You basically have to train yourself out of normal driving behavior.

I assume one-pedal driving made sense in early Teslas as a clever way to recover energy without depending too much on brake-pedal blending. But to me, the more natural setup is simple: lift off = coast, press brake = regen first, friction brakes later.

Even on a bicycle, when you stop pedaling, it does not slam on the brakes. It just keeps rolling

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