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BMW M5 F90 (2018+) General Forums F90 M5 General Forum    Auto-Start-Stop feature - disabled by default?

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      05-13-2019, 02:30 PM   #1
masmole
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Auto-Start-Stop feature - disabled by default?

This is my first BMW in 10 years and the first BMW I've had to have the auto-start-stop fuel-saving feature. Not that I'm complaining but it seems my M5C defaults to having that feature disabled at start-up, or at least remembers the last setting and stays that way. My understanding from previous Audis and other makes was that it was mandated by law that all vehicles that have this feature must have it active by default at start-up. I've had to re-code my previous Audis just to disable this but for some reason, I don't have to do anything for the M5C.

Is it possible that auto-start-stop is disabled during the running-in period prior to the 1200 mile service? Or has there been a change in the law or a technical loophole where BMW was able to have it disabled by default in certain models?
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      05-13-2019, 03:06 PM   #2
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By the button setting.
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      05-13-2019, 05:38 PM   #3
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Press the button and it should be disabled permanently going forward.
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      05-13-2019, 06:02 PM   #4
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thanks guys!

I had no idea BMWs were like that in US-spec... in that it remembers the last state of auto-start-stop enable/disable between start ups.

On my Audis and Range Rover, you can press the disable button when you start the car, but then then next time you start the car, the auto-start-stop is enabled by default again and you’d have to remember to press the button to disable it again. Both dealerships indicated that this was by design from the manufacturer due to federal regulation or something like that. On the Audis, I had to do an unauthorized re-coding just to make it off by default.
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      05-13-2019, 06:37 PM   #5
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Quote:
Originally Posted by masmole View Post
thanks guys!

I had no idea BMWs were like that in US-spec... in that it remembers the last state of auto-start-stop enable/disable between start ups.

On my Audis and Range Rover, you can press the disable button when you start the car, but then then next time you start the car, the auto-start-stop is enabled by default again and you’d have to remember to press the button to disable it again. Both dealerships indicated that this was by design from the manufacturer due to federal regulation or something like that. On the Audis, I had to do an unauthorized re-coding just to make it off by default.
That would be maddening. Glad the BMW is ‘opt out of dingbat green police feature’ only once.
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      05-13-2019, 08:21 PM   #6
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Quote:
Originally Posted by masmole View Post
This is my first BMW in 10 years and the first BMW I've had to have the auto-start-stop fuel-saving feature. Not that I'm complaining but it seems my M5C defaults to having that feature disabled at start-up, or at least remembers the last setting and stays that way. My understanding from previous Audis and other makes was that it was mandated by law that all vehicles that have this feature must have it active by default at start-up. I've had to re-code my previous Audis just to disable this but for some reason, I don't have to do anything for the M5C.

Is it possible that auto-start-stop is disabled during the running-in period prior to the 1200 mile service? Or has there been a change in the law or a technical loophole where BMW was able to have it disabled by default in certain models?
It preserves the last setting across engine start/stop events. At least mine and a few other folks I know of with an F90 does. Are you saying yours doesn't?
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      05-14-2019, 06:59 AM   #7
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Quote:
Originally Posted by limeypride View Post
Quote:
Originally Posted by masmole View Post
This is my first BMW in 10 years and the first BMW I've had to have the auto-start-stop fuel-saving feature. Not that I'm complaining but it seems my M5C defaults to having that feature disabled at start-up, or at least remembers the last setting and stays that way. My understanding from previous Audis and other makes was that it was mandated by law that all vehicles that have this feature must have it active by default at start-up. I've had to re-code my previous Audis just to disable this but for some reason, I don't have to do anything for the M5C.

Is it possible that auto-start-stop is disabled during the running-in period prior to the 1200 mile service? Or has there been a change in the law or a technical loophole where BMW was able to have it disabled by default in certain models?
It preserves the last setting across engine start/stop events. At least mine and a few other folks I know of with an F90 does. Are you saying yours doesn't?
As far as I know only the US spec will remember the last setting.
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      05-14-2019, 10:35 AM   #8
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Quote:
Originally Posted by Phatcat View Post
As far as I know only the US spec will remember the last setting.
That is strange. I recall that being reversed for the F10s... at least initially.

Perhaps somebody's found the right KVP to code it to do so.
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      05-21-2019, 07:41 AM   #9
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Neither my F10 or the F90 Comp reverts back after each startup. Just turn it off and it stays off forever.
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      05-21-2019, 08:25 AM   #10
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I think the M cars allow for the auto-start stop disablement to stay on. All non-M cars will revert back to auto start stop being enabled when you start the car.
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      05-21-2019, 09:09 AM   #11
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Also, if you are in sport plus it will not auto shutoff.
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      05-22-2019, 06:56 AM   #12
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Was same with F80

F80 remembers if you have it enabled or not between restarts/unlocks etc and so does this beast.
Not sure about it not doing it in Sports Plus... Will check again but I seemed to have had it sleep while stopped once when it was accidentally turned back on. It's normally in Sports Plus but maybe this time it wasn't...
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