Question about Auto On/Off Stop

Glassjaw047 · 07-08-2014, 08:07 AM

Don't think I saw someone bring this up but when you get to a red light or in traffice and the engine cuts out....does it only cut out for "x" amount of time? At first I thought I was letting go of the pedal very lightly causing the engine to kick in but clearly that is not the case....

DanG · 07-08-2014, 08:11 AM

It is a function of how charged the battery is. On a full charge it will stay off the entire time. If you just started the car, it won't stop at all.

Also the air conditioning and other options can drain the battery enough to cause the car to auto start.

franzrya · 07-08-2014, 08:27 AM

When the cabin starts to get hot, the engine will kick back on to provide more AC.

7Defcon · 07-08-2014, 08:40 AM

Also experienced that when it turns off at a stop, you can turn it back on by turning the wheel. And once it's turned on during the duration of that stop, it wont turn off again until the next time you stop.

HX_Guy · 07-08-2014, 08:41 AM

The start/stop rarely activates for me here in Phoenix, the conditions are right for it to happen. Will probably see it work a lot after the summer though.

pikcachu · 07-08-2014, 08:44 AM

also if you lift your foot slightly from the brake it will turn on again...

BEM-S4 · 07-08-2014, 09:31 AM

Does it auto-engage in Eco mode? Was stuck in traffic on NJTP so threw it in Eco for a while, noticed start stop was active when I stopped for fuel.

alz0rz · 07-08-2014, 09:36 AM

Quote:

Originally Posted by BEM-S4

Does it auto-engage in Eco mode? Was stuck in traffic on NJTP so threw it in Eco for a while, noticed start stop was active when I stopped for fuel.

YEs.

ska///235i · 07-08-2014, 09:37 AM

Shut it off or traded in for a prius imo

five3three · 07-08-2014, 09:54 AM

If you're stopped for a long time it'll kick back on. It isn't meant for very long stops, just your usual stop light.

7Defcon · 07-08-2014, 10:07 AM

Also... I think when the AC is on, it will turn off when the AC is on Level 1. It does it sometimes on Level 2, but not as often.

7Defcon · 07-08-2014, 10:09 AM

Quote:

Originally Posted by five3three

If you're stopped for a long time it'll kick back on. It isn't meant for very long stops, just your usual stop light.

I think the longest I've had it off on a light was 2 minutes.

HX_Guy · 07-08-2014, 10:45 AM

Quote:

Originally Posted by ska///235i

Shut it off or traded in for a prius imo

Why? I find it turns the car on almost instantly, really doesn't get in the way of driving I dont think.

DanG · 07-08-2014, 10:50 AM

Quote:

Originally Posted by HX_Guy

Why? I find it turns the car on almost instantly, really doesn't get in the way of driving I dont think.

I totally agree.

3.0L · 07-08-2014, 11:50 AM

I don't care for the engine stop mode, so I keep that feature turned off. I also do not care much for the Eco Pro mode - it's the coasting part that bugs me. I like to feel some engine compression hold back when going down hills.

Despite me defeating these so-called fuel economy features, my M235i shows a combined 26.6 MPG since new (2500+ miles) and highs of 34.7 MPG on the highway using the Comfort mode (360 mile trip just last week).

I've come to the conclusion that the engine stop and Eco Pro modes are really splitting hairs - probably not bad ideas, but still splitting hairs regarding MPG.

lichenlt · 07-08-2014, 12:36 PM

My car somehow remembers the last setting. It has stayed off even when I drive in comfort mode.

HX_Guy · 07-08-2014, 12:41 PM

Quote:

Originally Posted by 3.0L

Despite me defeating these so-called fuel economy features, my M235i shows a combined 26.6 MPG since new (2500+ miles) and highs of 34.7 MPG on the highway using the Comfort mode (360 mile trip just last week).

34.7 MPG? That is pretty freaking good. What MPH did you drive at on the freeway?

I agree on the Eco Pro mode, I can't do it. I tried this morning and it just makes the car feel way to sluggish and the throttle is too unresponsive. If you give it more gas, then all of a sudden is surges forward and doesn't feel smooth.

I use Comfort mode almost exclusively and I find it's just right. If I feel like doing a little bit of spirited driving or theres a nice sweeping left turn coming up or a twisty road, I'll switch to Sport for a bit.

ManCityFan · 07-08-2014, 12:57 PM

Quote:

Originally Posted by HX_Guy

Why? I find it turns the car on almost instantly, really doesn't get in the way of driving I dont think.

i like it. even with the 6MT it works flawlessly imo. and i am less impatient at stop lights when the engine shuts off.

pikcachu · 07-08-2014, 01:11 PM

wonder what's the long term implications of the car starting/stopping so much more often than without ASS

Grayhair · 07-09-2014, 10:17 AM

I never use it when in Eco mode, always turn it off. I also don't use eco mode that much, not fun.

3.0L · 07-09-2014, 10:25 AM

Quote:

Originally Posted by HX_Guy

34.7 MPG? That is pretty freaking good. What MPH did you drive at on the freeway?

The vast majority of my 360 mile trip was between 70 MPH and 82 MPH on the interstate highway. The last 100 miles were on some 2-lane highways with speeds between 55 and 65 MPH. And this included a couple of 95+ MPH passes of a long line of trucks.

This car is frigging amazing!

JustChris · 07-09-2014, 10:45 AM

Quote:

Originally Posted by pikcachu

wonder what's the long term implications of the car starting/stopping so much more often than without ASS

'Shouldn't ' be any as it designed in with a beefier starter motor etc etc. Only long term will we really see. Cars in the UK started with this about 3-4 years ago now I think.

07-08-2014, 08:07 AM	#1
Glassjaw047 Second Lieutenant 48 Rep 289 Posts Drives: 2014 M235i Estoril Blue II Join Date: May 2014 Location: Long Island, NY & NJ iTrader: (0)	Question about Auto On/Off Stop Don't think I saw someone bring this up but when you get to a red light or in traffice and the engine cuts out....does it only cut out for "x" amount of time? At first I thought I was letting go of the pedal very lightly causing the engine to kick in but clearly that is not the case.... __________________ 2014 M235i.Estoril Blue II Coral Red 2020 Jeep Grand Cherokee High Altitude 2021 X3M Competition.Alipine White.Sakhir Orange 2022 Jeep Grand Cherokee 4XE Summit Reserve (Current)
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07-08-2014, 08:11 AM	#2
DanG Major General 10656 Rep 6,935 Posts Drives: 2018 M2 AW DCT Join Date: Aug 2012 Location: Seattle, WA iTrader: (1) Garage List 2018 BMW M2 [7.68]	It is a function of how charged the battery is. On a full charge it will stay off the entire time. If you just started the car, it won't stop at all. Also the air conditioning and other options can drain the battery enough to cause the car to auto start.
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07-08-2014, 08:27 AM	#3
franzrya New Member 1 Rep 16 Posts Drives: BMW M235i Min. Gray Join Date: May 2014 Location: Tampa iTrader: (0)	When the cabin starts to get hot, the engine will kick back on to provide more AC.
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07-08-2014, 08:40 AM	#4
7Defcon Enlisted Member 9 Rep 39 Posts Drives: BMW 228i M Sport Join Date: Jun 2014 Location: So. Cal iTrader: (0)	Also experienced that when it turns off at a stop, you can turn it back on by turning the wheel. And once it's turned on during the duration of that stop, it wont turn off again until the next time you stop.
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07-08-2014, 08:41 AM	#5
HX_Guy Captain 119 Rep 623 Posts Drives: 2014 BMW M235i Join Date: Jul 2014 Location: Phoenix, AZ iTrader: (0)	The start/stop rarely activates for me here in Phoenix, the conditions are right for it to happen. Will probably see it work a lot after the summer though.
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07-08-2014, 08:44 AM	#6
pikcachu Major General 1399 Rep 5,262 Posts Drives: M235i (F22 Red angel) Join Date: Jul 2011 Location: undisclosed iTrader: (1)	also if you lift your foot slightly from the brake it will turn on again...
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07-08-2014, 09:31 AM	#7
BEM-S4 Major General 4516 Rep 8,942 Posts Drives: Dinan M235, Dinan Sport Wagon Join Date: Oct 2012 Location: Philadelphia iTrader: (5)	Does it auto-engage in Eco mode? Was stuck in traffic on NJTP so threw it in Eco for a while, noticed start stop was active when I stopped for fuel. __________________ 2022 Macan S 2016 F31 328i xDrive Sport Wagon 2006 E46 330ci ZHP Convertible
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07-08-2014, 09:37 AM	#9
ska///235i ***** noob 1369 Rep 10,479 Posts Drives: 325xi>M235i>428GCx Mspor Join Date: Sep 2005 Location: Boston iTrader: (34) Garage List 2006 325xi [0.00]	Shut it off or traded in for a prius imo __________________ 2006 325xi (Sold) 2014 M235I (Current) 2015 428xi Gran Coupe (STB)
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07-08-2014, 09:54 AM	#10
five3three Major 163 Rep 1,053 Posts Drives: m2c Join Date: Sep 2011 Location: VA iTrader: (3)	If you're stopped for a long time it'll kick back on. It isn't meant for very long stops, just your usual stop light.
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07-08-2014, 10:07 AM	#11
7Defcon Enlisted Member 9 Rep 39 Posts Drives: BMW 228i M Sport Join Date: Jun 2014 Location: So. Cal iTrader: (0)	Also... I think when the AC is on, it will turn off when the AC is on Level 1. It does it sometimes on Level 2, but not as often.
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07-08-2014, 11:50 AM	#15
3.0L Colonel 8935 Rep 2,010 Posts Drives: M235i, 20k miles Join Date: Apr 2014 Location: California iTrader: (0)	I don't care for the engine stop mode, so I keep that feature turned off. I also do not care much for the Eco Pro mode - it's the coasting part that bugs me. I like to feel some engine compression hold back when going down hills. Despite me defeating these so-called fuel economy features, my M235i shows a combined 26.6 MPG since new (2500+ miles) and highs of 34.7 MPG on the highway using the Comfort mode (360 mile trip just last week). I've come to the conclusion that the engine stop and Eco Pro modes are really splitting hairs - probably not bad ideas, but still splitting hairs regarding MPG. __________________ ///M235i \| Mineral Grey Metallic \| Premium Package \| Technology Package \| Driver Assistance Package \| Dakota Coral Red/Black Leather \| Harman/Kardon Premium 360 watt sound system \| 8-speed automatic When writing your life's plan, use a pencil with an eraser
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07-08-2014, 12:36 PM	#16
lichenlt First Lieutenant 28 Rep 333 Posts Drives: M235i Join Date: Feb 2014 Location: Land of Opportunity iTrader: (0)	My car somehow remembers the last setting. It has stayed off even when I drive in comfort mode.
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07-08-2014, 01:11 PM	#19
pikcachu Major General 1399 Rep 5,262 Posts Drives: M235i (F22 Red angel) Join Date: Jul 2011 Location: undisclosed iTrader: (1)	wonder what's the long term implications of the car starting/stopping so much more often than without ASS
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07-09-2014, 10:17 AM	#20
Grayhair Old Guys Rule 20 Rep 73 Posts Drives: 2014 M235I Join Date: Mar 2014 Location: Tennessee iTrader: (0)	Stop Start option I never use it when in Eco mode, always turn it off. I also don't use eco mode that much, not fun.
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