[TurtleBoy]

Originally Posted by streborx

I flashed mine off with Bimmercode. My understanding is that when a dealer installs a s/w update, it overwrites the Bimmercode changes, and they have to be re-flashed.

On my MB G550, I disconnected the charge current sensor on the main battery negative terminal. This makes the ASS system believe that the battery charge state won't support starting, so it suspends ASS. Don't know if this works for BMW, but if I get a s/w update that resets ASS, I'll try this before re-Bimmercoding it off again.

I suggest you don’t do that. The 5 minutes it takes to recode is time well spent given the issues you can have disconnecting things. 😉

[mikekay]

I agree with Turtle here, BMWs have a very weird circulative charging system. You might have other things tripping up because the ECU is reading bad battery.

[TurtleBoy]

Originally Posted by mikekay

I agree with Turtle here, BMWs have a very weird circulative charging system. You might have other things tripping up because the ECU is reading bad battery.

Yes, they use an IBS (Intelligent Battery Sensor) to keep track of the battery and charge state. That is why you shouldn't charge the battery using the battery terminals but rather the terminals under the hood.

[streborx]

Originally Posted by mikekay

I agree with Turtle here, BMWs have a very weird circulative charging system. You might have other things tripping up because the ECU is reading bad battery.

Possibly, but I'm always curious about stuff like this, and it's easy enough to try before re-Bimmercoding.

[streborx]

Originally Posted by TurtleBoy

Yes, they use an IBS (Intelligent Battery Sensor) to keep track of the battery and charge state. That is why you shouldn't charge the battery using the battery terminals but rather the terminals under the hood.

There's no question about the battery management system being complicated and esoteric. Even BMW screwed up designing it when originally, it required the hood to be up in order for charging to occur.

[Berzerker]

Originally Posted by TurtleBoy

1. Technically yes, it can effect the warranty if the dealer spots it and can show the coding caused the problem. In Canada there are instances of the dealer seeing the coding and putting the vehicle on a list , that does not happen in the US as far as I know.

2. There is no way to make it remember the last state since the button is gone. When the button was first removed some folks coded theirs to remember and then set it to Sport to turn it off. It came back on with a restart.

Bullet 1 - would be nice to get any kind of confirmation in the US

Bullet 2 - I forgot to mention I'm in an M50i, so I still have the button.

[TurtleBoy]

Originally Posted by Berzerker

Bullet 1 - would be nice to get any kind of confirmation in the US

Bullet 2 - I forgot to mention I'm in an M50i, so I still have the button.

1. Not sure what type of confirmation you are looking for. Coding will void the warranty (meaning deny coverage) if it causes a problem and BMW can show it caused the problem. The likelihood of that happening with Bimmercode is very small unless you start screwing around in Expert mode. Those that use Esys can brick the vehicle more easily if they do not do things right. In that case they would have to pay in order for the dealer to get the vehicle back to working.

2. Then rather than disabling ASS in Bimmercode you can code it to remember the last state. Turn it off once and you will be good to go.

[mikekay]

Unless I am reading incorrectly Turtle, Berzerker is saying that since the button is gone which in turn make Last Remember gone in coding. so are you saying you are FORCED to keep it on. What a shitty move BMW -- I just updated the software in mine and all my coding was gone most of it I was like "meh whatever", but ASS was like stupid annoying on an errand run.

[TurtleBoy]

Originally Posted by mikekay

Unless I am reading incorrectly Turtle, Berzerker is saying that since the button is gone which in turn make Last Remember gone in coding. so are you saying you are FORCED to keep it on. What a shitty move BMW -- I just updated the software in mine and all my coding was gone most of it I was like "meh whatever", but ASS was like stupid annoying on an errand run.

I think you are confusing a few things, he is not saying that. In fact he specifically says he has an M50i and that has the button. In that case he can code the vehicle to remember the last state or he can code it to disable ASS.

For those that don't have the button, then the only option is to code it to disable ASS since remembering the last state does nothing.

[mikekay]

Originally Posted by TurtleBoy

I think you are confusing a few things, he is not saying that. In fact he specifically says he has an M50i and that has the button. In that case he can code the vehicle to remember the last state or he can code it to disable ASS.

For those that don't have the button, then the only option is to code it to disable ASS since remembering the last state does nothing.

Thanks for the clarification at least you can still disable... phew!

[streborx]

Originally Posted by TurtleBoy

I think you are confusing a few things, he is not saying that. In fact he specifically says he has an M50i and that has the button. In that case he can code the vehicle to remember the last state or he can code it to disable ASS.

For those that don't have the button, then the only option is to code it to disable ASS since remembering the last state does nothing.

Do you know if Bimmercoding can be done on '23s equipped with iDrive8? I read somewhere that coding changes on the iDrive8 version requires some interaction with the BMW mother-ship.

[TurtleBoy]

Originally Posted by streborx

Do you know if Bimmercoding can be done on '23s equipped with iDrive8? I read somewhere that coding changes on the iDrive8 version requires some interaction with the BMW mother-ship.

I have read that iDrive 8 was locked down in coding but have also seen folks say they have coded it. The BimmerCode site doesn’t exclude the LCI update for the 3’s and X7 from what I saw. I will look into it more later today.

[JK479]

Originally Posted by Marty in NY

I have a '21, the button to turn if off is gone so I used Bimmercode to disable it full time regardless of what mode I want to drive in.

I have a 19 and disable it constantly. Had it coded and an id7 update reset my code!

Most unless feature- on mild hybrid I hear it's much much smoother. Jarring on my 19

[TurtleBoy]

Originally Posted by JK479

I have a 19 and disable it constantly. Had it coded and an id7 update reset my code!

Most unless feature- on mild hybrid I hear it's much much smoother. Jarring on my 19

IDrive updates will wipe out the coding of any ECU that is updated.

It all depends on your perception and expectations. I never bother coding it off my 19 since it is barely noticeable.

[TurtleBoy]

Originally Posted by streborx

Do you know if Bimmercoding can be done on '23s equipped with iDrive8? I read somewhere that coding changes on the iDrive8 version requires some interaction with the BMW mother-ship.

I have an email in to Stephan but have found that people have been coding their iD8s's with ESys although not all ECUs are available for coding. Will let you know what I hear.

[mikekay]

Originally Posted by JK479

I have a 19 and disable it constantly. Had it coded and an id7 update reset my code!

Most unless feature- on mild hybrid I hear it's much much smoother. Jarring on my 19

Just literally happened to me! I feel your pain!

[Marty in NY]

mikekay and JK479 .. ..

Right, luckily, via this forum, I knew that, so when I did my initial BimmerCode coding, I wrote down all the features I coded to make it a bit easier to find them in the event a dealer or OTA update wipes them out. Neither the dealer or OTA happens frequently enough to make it a chore to recode and recoding is stupid simple and quick. Since coding via Bimmercode or other choices is taking the car away from OEM, I completely understand and have no issue with dealer or OTA updates reseting everything back to OEM. Also, if I experience issues with what I coded, I will appreciate the ability to go back to OEM default in an attempt at troubleshooting, especially during warranty so I can show the dealer what doesn't work and get them to fix it. Anyway, that's my take on it.

In terms of ASS, its silky smooth on my '21 due to the new starter/generator system they installed when they removed the ASS On/Off button. I've been in a number of cars in Europe when ASS first came out and it was pretty rough when the engine stopped and restarted. BMW did a great job on the '21's and onward. Still, I don't care for the feature.

[JK479]

Originally Posted by Marty in NY

mikekay and JK479 .. ..

Right, luckily, via this forum, I knew that, so when I did my initial BimmerCode coding, I wrote down all the features I coded to make it a bit easier to find them in the event a dealer or OTA update wipes them out. Neither the dealer or OTA happens frequently enough to make it a chore to recode and recoding is stupid simple and quick. Since coding via Bimmercode or other choices is taking the car away from OEM, I completely understand and have no issue with dealer or OTA updates reseting everything back to OEM. Also, if I experience issues with what I coded, I will appreciate the ability to go back to OEM default in an attempt at troubleshooting, especially during warranty so I can show the dealer what doesn't work and get them to fix it. Anyway, that's my take on it.

In terms of ASS, its silky smooth on my '21 due to the new starter/generator system they installed when they removed the ASS On/Off button. I've been in a number of cars in Europe when ASS first came out and it was pretty rough when the engine stopped and restarted. BMW did a great job on the '21's and onward. Still, I don't care for the feature.

It's a small nod to conservation- the problem is maybe we want AC blowing cold at a light

[Marty in NY]

Originally Posted by JK479

It's a small nod to conservation- the problem is maybe we want AC blowing cold at a light

ASS is a smart system, if its hot out and you have the A/C on, it will not shut off the engine at a light. If on the other hand the A/C has reached your set temp and is maintaining it without a problem, it might but it depends on the delta between your set temp, the interior temp and the outside temp. Even if it shuts off but you are at a light and its a long ass (he he) light, the engine can turn back on by itself. Same goes for the heater in the winter.

[JK479]

Originally Posted by Marty in NY

ASS is a smart system, if its hot out and you have the A/C on, it will not shut off the engine at a light. If on the other hand the A/C has reached your set temp and is maintaining it without a problem, it might but it depends on the delta between your set temp, the interior temp and the outside temp. Even if it shuts off but you are at a light and its a long ass (he he) light, the engine can turn back on by itself. Same goes for the heater in the winter.

In 2019 it was not so smart- happened all summer. Ac turned off at lights.

Worse- when driving in the garage- damn engine shuts off if you are easing yourself into the spot.

Maybe it's improved…. But its a nuisance on non mild hybrids

[TurtleBoy]

Originally Posted by JK479

In 2019 it was not so smart- happened all summer. Ac turned off at lights.

Mine is a 2019 and it doesn't turn off at lights when the A/C is needed. It depends on the temperature differential.

[JK479]

Originally Posted by TurtleBoy

Mine is a 2019 and it doesn't turn off at lights when the A/C is needed. It depends on the temperature differential.

I guess being on max ac cold- it had to give for me.