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Regenerative Braking-adjustment?

862 Views 21 Replies 8 Participants Last post by p__x, 3 d ago

KimK

Discussion Starter · 6 d ago

We took our ‘21 ID4 in for recalls (they had our car for 17 days!) and after doing the update we noticed a couple of changes, the two most obvious being the automatic brake hold and a change in the regenerative braking: both in the speed and distance. I used to be able to take foot off accelerator and come to a complete stop. Now the car continues at a ‘slower’ rate of slowdown (for lack of better terminology-meaning the car is going faster) and rarely comes to a stop. I always have to brake. I want my old regenerative braking speed back to what it was pre-update. Asking dealership about this elicits the same response as every other question: “This is all pretty new to us here and we don’t know.”
Does anyone have any thoughts or hacks or ideas about this?

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BoxerPowerBB

· #2 · 6 d ago (Edited)

I feel the software adjusted it a little too. Mine was never able to come to a stop prior but I do feel it’s bit less aggressive since the update. The ID.4 lacks manual adjustment of the regenerative braking so nothing you can really do. I think it’s actually more effective with the update because it keeps it in the sweet spot of regenerative braking and captures more energy. Felt like prior to the update it would scrub off too much speed and not give you enough time to recapture energy. You can turn auto-hold off if you want.

Reactions: 1

Drew

· #3 · 6 d ago

Mine seemed to have changed a little, too, but ID4s don't have 1 pedal driving, so they don't come to a complete stop...almost, but go into a 3 mph creep.

Reactions: 1

MR. Ed of course

· #4 · 6 d ago

My 23 Pro-S will slow to a near stop while in "B". However, on one occasion it did stop abruptly when I crept up to the car in front while looking left for side-coming traffic. I incorrectly thought the car in front was already on its way, but the front sensors knew otherwise and forced a STOP!

One more rescue occurred while backing out of a parking spot while surrounded by two large SUVs. As I started, the car beeped loudly and came to another abrupt STOP. A fast moving car whizzed just behind me. Without the sensors, there would have been a collision. 😕

Reactions: 3

Perry Rhodan

· #5 · 5 d ago

KimK said:
I used to be able to take foot off accelerator and come to a complete stop. Now the car continues at a ‘slower’ rate of slowdown (for lack of better terminology-meaning the car is going faster) and rarely comes to a stop. I always have to brake.

I don’t believe the ID.4 has ever had the ability to fully stop when taking one’s foot off the accelerator. You must use the brakes to fully stop. This has been the source of countless complaints as the VW B mode is not a one pedal driving.

MR. Ed of course

· #6 · 5 d ago

Perry Rhodan said:
I don’t believe the ID.4 has ever had the ability to fully stop when taking one’s foot off the accelerator. You must use the brakes to fully stop. This has been the source of countless complaints as the VW B mode is not a one pedal driving.

It will come to a complete and abrupt stop when the front sensors anticipate hitting an object or pedestrian. Been there done that. 👏

Reactions: 2

Perry Rhodan

· #7 · 5 d ago

MR. Ed of course said:
It will come to a complete and abrupt stop when the front sensors anticipate hitting an object or pedestrian. Been there done that. 👏

That’s emergency braking, it has nothing to do with regenerative braking which is what is discussed in this thread.

Reactions: 1

MR. Ed of course

· #8 · 5 d ago

Perry Rhodan said:
That’s emergency braking, it has nothing to do with regenerative braking which is what is discussed in this thread.

Nonetheless, the car will come to a complete stop regardless of whether it's in "D" or "B" irrespective of Regenerative Braking. Thus, the effect is the same and acts as a FULL stop.

Your point is well taken IF there is nothing in front of the car as you approach a stop sign or red light. Then, application of the brake will be required to come to a complete stop. YMMV.

Reactions: 1

Perry Rhodan

· #9 · 5 d ago

MR. Ed of course said:
Nonetheless, the car will come to a complete stop regardless of whether it's in "D" or "B" irrespective of Regenerative Braking. Thus, the effect is the same and acts as a FULL stop.

Your point is well taken IF there is nothing in front of the car as you approach a stop sign or red light. Then, application of the brake will be required to come to a complete stop. YMMV.

Relying on emergency braking to come to a full stop instead of applying the brakes sure sounds like a recipe for disaster. I’m not sure what your point is but I know emergency braking is for emergencies which again as nothing to do with regenerative braking discussed here.

Reactions: 4

MR. Ed of course

· #10 · 5 d ago

Perry Rhodan said:
Relying on emergency braking to come to a full stop instead of applying the brakes sure sounds like a recipe for disaster. I’m not sure what your point is but I know emergency braking is for emergencies which again as nothing to do with regenerative braking discussed here.

You're absolutely correct. I don't purposely want to have it come on, but it's nice to know it's there should I inadvertently fail to apply the appropriate amount of braking. I don't want to jinx myself, so I won't mention how long it's been since I was involved in a collision, or a ticket for that matter.

With regard to ACC and regenerative braking, I often override it when approaching stopped cars. I find it to be too abrupt. I prefer a more gradual deceleration - similar to what a chauffer would do. YMMV.

KimK

Discussion Starter · #11 · 5 d ago

KimK said:
We took our ‘21 ID4 in for recalls (they had our car for 17 days!) and after doing the update we noticed a couple of changes, the two most obvious being the automatic brake hold and a change in the regenerative braking: both in the speed and distance. I used to be able to take foot off accelerator and come to a complete stop. Now the car continues at a ‘slower’ rate of slowdown (for lack of better terminology-meaning the car is going faster) and rarely comes to a stop. I always have to brake. I want my old regenerative braking speed back to what it was pre-update. Asking dealership about this elicits the same response as every other question: “This is all pretty new to us here and we don’t know.”
Does anyone have any thoughts or hacks or ideas about this?

I guess my point is that after the update the car is now slowing ‘slower’ than it did before when I take my foot off the accelerator, and I have to brake sooner. It’s noticeably different than it was before the update. I believe Tesla has the ability to change between levels of slowing (or regenerating). I know I have to brake - and that’s fine - but now there is very little ‘coasting’ time.

Perry Rhodan

· #12 · 5 d ago

KimK said:
I guess my point is that after the update the car is now slowing ‘slower’ than it did before when I take my foot off the accelerator, and I have to brake sooner. It’s noticeably different than it was before the update. I believe Tesla has the ability to change between levels of slowing (or regenerating). I know I have to brake - and that’s fine - but now there is very little ‘coasting’ time.

You may want to try the different driving mode and see if that has an impact.

VW Dave

· #13 · 5 d ago

The e-Golf had four different regeneration "strength" options.

p__x

· #14 · 5 d ago

creep speed depends on the driving mode. its faster in SPORT and slower/easier to stop in ECO/Comfort

Reactions: 1

MR. Ed of course

· #15 · 4 d ago

p__x said:
creep speed depends on the driving mode. its faster in SPORT and slower/easier to stop in ECO/Comfort

I tested it yesterday. In ECO it creeps along at 2 MPH. YMMV.

Reactions: 3

KimK

Discussion Starter · #16 · 4 d ago

p__x said:
creep speed depends on the driving mode. its faster in SPORT and slower/easier to stop in ECO/Comfort

BAM! 💥 That was it - mode was changed off of ECO when in the dealership for the recalls. Thanks everyone. Happy ID4 owner again! 👏👏👏 Love this car.

Reactions: 4

p__x

· #17 · 4 d ago

MR. Ed of course said:
I tested it yesterday. In ECO it creeps along at 2 MPH. YMMV.

KimK said:
BAM! 💥 That was it - mode was changed off of ECO when in the dealership for the recalls. Thanks everyone. Happy ID4 owner again! 👏👏👏 Love this car.

Yeah, it really makes a difference for my experience too. I'm fine with the ECO mode's creep, but Sport mode's is too much. I have yet to figure out out whether it's the driving dynamics or the powertrain responsible for creep.

Reactions: 1

Atlant

· #18 · 4 d ago

p__x said:
Yeah, it really makes a difference for my experience too. I'm fine with the ECO mode's creep, but Sport mode's is too much. I have yet to figure out out whether it's the driving dynamics or the powertrain responsible for creep.

Let me be the first to say that it's STUPID of the designers to have changed the creep speed with the driving mode. There's no good reason for this, especially as the feature many of us really want is Creep Speed = 0, i.e., coast right down to a full stop.

Reactions: 4

p__x

· #19 · 4 d ago

MR. Ed of course said:
I tested it yesterday. In ECO it creeps along at 2 MPH. YMMV.

Atlant said:
Let me be the first to say that it's STUPID of the designers to have changed the creep speed with the driving mode. There's no good reason for this, especially as the feature many of us really want is Creep Speed = 0, i.e., coast right down to a full stop.

Agree. Though we should test whether it's the creep speed or the creep momentum/brake force that is different. All I noticed it's that I have to brake harder to get a full stop. @MR. Ed of course, do you want to test creep speed in Sport mode? I'm not driving anywhere, so I can't today.

MR. Ed of course

· #20 · 4 d ago

p__x said:
Agree. Though we should test whether it's the creep speed or the creep momentum/brake force that is different. All I noticed it's that I have to brake harder to get a full stop. @MR. Ed of course, do you want to test creep speed in Sport mode? I'm not driving anywhere, so I can't today.

Next time I have errands. Now is a good time to chillax.

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