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Woo
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Are you sure about this? I'm 99% sure the brake pads engage as soon as you depress the brake pedal more than a 1/2" to 1". If you're just sort of floating on the pedal and disengaging cruise control, then yeah, the pads aren't being used but I thought there were NHTSA standards for the brake pedal that wouldn't allow a vehicle to "brake by wire" using the brake pedal.
Do you have any info on this? I'm super curious if Rivian is somehow doing this.
Curtis Novak
Member
I do not have anything in writing from the Rivian. I have heard it mentioned in interbviws, and was my years experience from my tesla. Lastly You can see it for yourself when you you are going fast with low regen and you press the break you can watch the regen increase as you press harder in the break.
Curtis
John G.
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I'm 26,000 miles+ and High on Regen!
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Sgt Beavis
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Here I am driving in the appropriate mode.
Tony R1S
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I also dig the one pedal driving thing, and even on standard mode, I never touch the brake.
Another thing I've noticed with the standard setting is the adaptive cruise control seems a lot smoother in stop-&-go traffic when using the first or second (shorter) follow distance setting. In high regen mode, I would have to constantly adjust the set speed to prevent the lurching acceleration and jerky deceleration. I've only tested this a couple of times, so I'll need to try this some more.
Another thing I've noticed with the standard setting is the adaptive cruise control seems a lot smoother in stop-&-go traffic when using the first or second (shorter) follow distance setting. In high regen mode, I would have to constantly adjust the set speed to prevent the lurching acceleration and jerky deceleration. I've only tested this a couple of times, so I'll need to try this some more.
tbrockhurst
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High all the time.
In the city it’s great & reliable.
On a freeway unpredictable & particularly in LA, I have to use the brakes, despite deliberately leaving a safe braking distance.
But it’s the 1st vehicle I’ve ever driven (other than tractors/combines etc) where you have to lift your foot over to the brake pedal, which to me is severely dangerous, particularly given the fast & furious nature of LA freeway drivers that will jump in front with a fag paper’s clearance.
In the city it’s great & reliable.
On a freeway unpredictable & particularly in LA, I have to use the brakes, despite deliberately leaving a safe braking distance.
But it’s the 1st vehicle I’ve ever driven (other than tractors/combines etc) where you have to lift your foot over to the brake pedal, which to me is severely dangerous, particularly given the fast & furious nature of LA freeway drivers that will jump in front with a fag paper’s clearance.
Pacernow
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High regen 100% of the time.
McLovin
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What is "brake assist"? Is this an option only on certain models (I have a '24 Dual and can't find it on my screen)?
I'm on 'Standard', btw. Never tried High or Low...just comfortable w/ the standard mode.
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R1Thor
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It's enabled by default. The feature was introduced in 2023.50 to blend physical brakes with regenerative braking to maintain consistent experience (such as when you have a high state of charge, regenerative braking is degenerated due to heat or cold, when you're driving excessively downhill, etc). It's a feature you have to intentionally disable if you don't want it:
Settings > Driver+ > Regen Brake Assist
McLovin
Well-Known Member
Thanks, I'll check it out in a bit. I searched "brake assist" in the online help, but didn't see anything come up. Admittedly, I only glanced at the topics, but didn't see anything in the first few hits.
usulio
Well-Known Member
I'm not sure that gauge is actually showing amount of regen, it may just be showing amount of braking power. Not exactly the same but relevant section from the owner's guide
(Standard Rivian falling over themselves to avoid giving us direct info / make things confusing)
Curtis Novak
Member
I am a little disappointed that this is the only small part of my original comment that is quoted. As I stated I am historically a single pedal driver from my stick shift and Motorcycle beginnings. In the end I use the break pedal no more in low regen as I did in high regen. My main point of my original comment is even in the highest regen setting you are getting back a fraction of kWh that you use with acceleration. I found that the high regen was slowing the car down more than necessary requiring me to use the acceleration even more to combat the regen, which in the end is using more energy. The lower regen is allowing the car to freely coast a little more with out extra acceleration which should use less kWh. I do not know exactly how much the pads were used in breaking but in my Volt, and my Tesla the regen did work on the break pedal unless you stood on it hard. Neither of those cars ever needed a break job.
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