[thiswillwork7]

Since BMW decided to remove the button to cancel the auto/start function on the 540i, and so many other models, I've been using the "Sport Individual(everything in comfort)" mode to avoid having my engine stop for every stop. But the grabby brakes, that jerks you when you come to a stop, it's still in effect, even though the engine does not stop. It just feels weird when you are about to stop, I'm sure many of you feel the same, it does not seem "natural". And the almost 1 sec delay after you release the brakes feels awful.
Now this issue has nothing to do with how I brake, or if I have M Sport Brakes, or if the brakes are new/old ,etc. And I'm saying this because when I switch the car mode to "Sport" or Sport+" the grabby brake feel goes away, and the braking, when coming to a stop, feels the way it should feel.

Is there something that can be done in the car's ECM for the brakes to feel normal at all times ? Or maybe to remove the whole auto/start/brake "feature".
I've called about 5 mechanics, in my area, that specializes in European cars but they either have no idea, or never worked on such a thing.

I've looked thru the forums but I couldn't find a thread that specifically states my issues above.

[LogicalApex]

Why are you worried about the engine stopping? The Mild-Hybrid (MHT) should be a lot like the 530e in this regard and it should feel pretty smooth and seamless.

I haven’t driven the 540i with the MHT, but I am going to guess that they added regenerative braking to recoup some of that lost energy to power to small electric motor for its MHT setup. If so, that is what you’re feeling. The transition from the regenerative braking to the friction brakes. You can feel a very subtitle cross over unless you’re braking a bit more directly I guess and that would lead to a more noticeable transition.

[NGT2]

I didn't realize they'd removed the ability to turn off auto start/stop. Add this to the list of reasons I like my 2018. I hate the auto start/stop.

[OmahaDB]

Originally Posted by NGT2

I didn't realize they'd removed the ability to turn off auto start/stop. Add this to the list of reasons I like my 2018. I hate the auto start/stop.

I'd love it, if it would stop the engine just after you come to a complete stop, not just before. Dumb software choice; even my wife's Toyota got it right.

[AP]

Wait till they add mandatory speed limiters here in the EU this summer, hopefully a defeat button that as well

[NGT2]

Originally Posted by OmahaDB

I'd love it, if it would stop the engine just after you come to a complete stop, not just before. Dumb software choice; even my wife's Toyota got it right.

Yes. That drives me crazy!

[Joe-BMW33]

Originally Posted by NGT2

Yes. That drives me crazy!

Thank god we can code out ASS.

[NGT2]

Originally Posted by Joe-BMW33

Thank god we can code out ASS.

Yep

[ezaircon4jc]

Originally Posted by NGT2

I didn't realize they'd removed the ability to turn off auto start/stop. Add this to the list of reasons I like my 2018. I hate the auto start/stop.

It also adds wear and tear to the starter. My neighbor was a mechanic for the PO. I asked him if the a/s/s caused increased w&t on the starter and what the PO's experience was as they are constantly starting and stopping their vehicles. He said the high frequency of starts/stops caused excessive w&t on the starters and they needed regular replacement.

[NGT2]

Originally Posted by ezaircon4jc

It also adds wear and tear to the starter. My neighbor was a mechanic for the PO. I asked him if the a/s/s caused increased w&t on the starter and what the PO's experience was as they are constantly starting and stopping their vehicles. He said the high frequency of starts/stops caused excessive w&t on the starters and they needed regular replacement.

Of course it does. There's no way for it not to. If my understanding is accurate, it's a completely worthless feature that was designed to increase fuel economy in the regulators tests, even though it would never make a difference in real life. I also wonder if it puts excess wear and tear on other components in addition to the starter.

[G30 B58]

[DealBMW]

A simple fix through bimmercode app.

[BrewsterGreenM550]

Originally Posted by DealBMW

A simple fix through bimmercode app.

Thank god

[LogicalApex]

Originally Posted by OmahaDB

I'd love it, if it would stop the engine just after you come to a complete stop, not just before. Dumb software choice; even my wife's Toyota got it right.

That is how the mild hybrid is supposed to work. They engine is able to be shut off approaching the stop during energy recouping. It also starts after you are already moving so you don’t get that sudden drop in power at the stop or a sluggish start when going. It also feels seamless.

I also don’t see how it does any serious damage to the starter. I drive a 530e and the engine can start probably 50x during a trip. I don’t see a flood of 530e owners or any BMW PHEV noting starter failures. I don’t hear of starter failures generally on this forum so I am not sure why that is a factor honestly.

[OmahaDB]

Originally Posted by LogicalApex

That is how the mild hybrid is supposed to work. They engine is able to be shut off approaching the stop during energy recouping. It also starts after you are already moving so you don’t get that sudden drop in power at the stop or a sluggish start when going. It also feels seamless.

I also don’t see how it does any serious damage to the starter. I drive a 530e and the engine can start probably 50x during a trip. I don’t see a flood of 530e owners or any BMW PHEV noting starter failures. I don’t hear of starter failures generally on this forum so I am not sure why that is a factor honestly.

Ah, I guess the '21 is a mild hybrid. Mine's a 2018... definitely not a mild hybrid, and they just plain screwed up the software for start/stop. More specifically, the stop part. It's like they picked a non-zero speed at which to stop the engine, when there are perfectly good accelerometers already in the car that could tell you when it's actually stopped.

Obviously if the car's got a traditional starter, then it's going to wear out more quickly with start/stop than without. Still, though, you're talking about a part that would generally speaking last decades and hundreds of thousands of miles, so "it will fail quicker" means most people still won't see it fail. Auto start/stop isn't going to do "serious damage"; the thing's designed to start an engine, and it will do that for a long time.

[NGT2]

Originally Posted by LogicalApex

That is how the mild hybrid is supposed to work. They engine is able to be shut off approaching the stop during energy recouping. It also starts after you are already moving so you don’t get that sudden drop in power at the stop or a sluggish start when going. It also feels seamless.

I also don’t see how it does any serious damage to the starter. I drive a 530e and the engine can start probably 50x during a trip. I don’t see a flood of 530e owners or any BMW PHEV noting starter failures. I don’t hear of starter failures generally on this forum so I am not sure why that is a factor honestly.

Mine is a 2018. The feature just sucks.

[thiswillwork7]

Bimmercode won't help in this case since the button to turn off does not exist. From what I Know Bimmercode will make it so you will start your car with the system in "off mode" every time.

I did found if I just disable traction control the brakes will go back to normal, so this will be a fix for the meantime.

[SteveinArizona]

Originally Posted by LogicalApex

Why are you worried about the engine stopping? The Mild-Hybrid (MHT) should be a lot like the 530e in this regard and it should feel pretty smooth and seamless.

I haven’t driven the 540i with the MHT, but I am going to guess that they added regenerative braking to recoup some of that lost energy to power to small electric motor for its MHT setup. If so, that is what you’re feeling. The transition from the regenerative braking to the friction brakes. You can feel a very subtitle cross over unless you’re braking a bit more directly I guess and that would lead to a more noticeable transition.

My 530e starts/stops the ICE but keeps the electric motor running (so my car creeps forward unless I put my foot on the brake or activate autohold). I believe the mild hybrid does not creep but turns off the ICE and starts the car up with the electric motor while the ICE gets going.