I've always wanted to know...

spyderco10 · 06-22-2009, 11:42 PM

if while at speed, and you press the engine on/off button, will your engine shut off? I've been wondering this myself for a while, and I've also been asked this.

Does anyone know what will happen, or been crazy enough to try it?

Lemans_Blue_M · 06-22-2009, 11:53 PM

Okay I'll try it...right after you.

akssriva · 06-22-2009, 11:59 PM

I'm not about to find out. Some things are best left undone.

sard · 06-23-2009, 12:02 AM

Lol... funny you ask this..I've wondered also. One time I was slowwly reversing out of my driveway and I went to close the garage door, but stupidly hit the on/off button on my dct car. It automatically put the car in park and it jerked to a halt. Thank god I was going very slow. I've wondered if I was driving at like 40+ mph, if I or someone hit the on/off button, would the car explode into smithereens.

amgthis · 06-23-2009, 12:08 AM

I'd assume the car would override that order if it deems the speed unsafe to shut off the car or put the passengers in any danger. Who wants to test my guess?

Serious · 06-23-2009, 12:14 AM

Nothing will other then losing power assist on brakes and steering if the ignition is still on... but for the record ive tried to do this in a loaner 09 328i and it wouldn't work at speed but under about 10-15mph it turned off.

sard · 06-23-2009, 12:17 AM

Are you guys talking about 6mt or dct

Lemans_Blue_M · 06-23-2009, 12:18 AM

Nope, wrong answers guys...the car will stop if you press the button. (even at speed)

It's an emergency shutdown safety feature in case of an engine fire of some other catastrophic mechanical failure.

Not kidding guys, it's there to help you keep a potential problem from escalating.

bunnn · 06-23-2009, 12:19 AM

my dad decided to try this on his 09 X5 at 40km/h it didn't shut off, we never tried at lower speed, i wonder if we have a problem

spyderco10 · 06-23-2009, 12:24 AM

I have a 6MT, so not sure what would happen if it were in gear when pressed. But my boss has an 328i automatic and one day we were driving on the highway and he asked me what would happen if he pressed the engine on/off button? I really don't know the answer to this one. The first person to definitively find out gets a cookie.

spyderco10 · 06-23-2009, 12:25 AM

Quote:

Originally Posted by bunnn

my dad decided to try this on his 09 X5 at 40km/h it didn't shut off, we never tried at lower speed, i wonder if we have a problem

25 mph, not that fast, but still, that's nuts!

Serious · 06-23-2009, 12:29 AM

Quote:

Originally Posted by Lemans_Blue_M

Nope, wrong answers guys...the car will stop if you press the button. (even at speed)

It's an emergency shutdown safety feature in case of an engine fire of some other catastrophic mechanical failure.

Not kidding guys, it's there to help you keep a potential problem from escalating.

well ive pressed the button tons of times at 30mph and nothing happened until we were going slower.

JCtx · 06-23-2009, 12:31 AM

Quote:

Originally Posted by spyderco10

I have a 6MT, so not sure what would happen if it were in gear when pressed.

Nothing happens if you turn your engine off in gear on a 6MT, other than slowing down like if you lift the gas pedal while the engine is running (which also shuts off fuel until near idle).
The question is: Does engine shut off if button is pressed? My guess is it does, just like if it was a key, for emergencies (engine fire, low oil pressure, etc). But am not going to volunteer to try it

.

Lemans_Blue_M · 06-23-2009, 12:31 AM

Well I know that it works at 15 mph or less with comfort access...

If you are talking about HIGHWAY SPEEDS, then I would say NO.

That could lead to a serious accident, if your car all of a sudden shutdown in the middle of the interstate going 70mph!

roller · 06-23-2009, 12:40 AM

Maybe if you held the button down. I don't see much damage if you're in neutral. Other than just cruising to a stop with no power steering/brakes.

swamp2 · 06-23-2009, 01:49 AM

Quote:

Originally Posted by seriousm3

well ive pressed the button tons of times at 30mph and nothing happened until we were going slower.

I can confirm. At a certain speed and above it does nothing.

spyderco10 · 06-23-2009, 02:35 AM

Quote:

Originally Posted by swamp2

I can confirm. At a certain speed and above it does nothing.

this is quite a relief, in case some clown passenger decides to press the button. your cookie is on its way.

URBAN LEGEND · 06-23-2009, 03:47 AM

It won't do anything but give you the gong at speed that is.

Big Windy · 06-23-2009, 05:25 AM

Quote:

Originally Posted by seriousm3

Nothing will other then losing power assist on brakes and steering if the ignition is still on... but for the record ive tried to do this in a loaner 09 328i and it wouldn't work at speed but under about 10-15mph it turned off.

HAHAHAHAHA!!!!

Ben335 · 06-23-2009, 06:40 AM

Ok, let me confirm that it does shut down the engine at all speeds, but with the clutch in. My previous 335 was having massive engine problems and I have reset the limp mode several times which running at speed. The key is the clutch. With it out, the car will not turn off. With the clutch in, it will.

I don't know how Automoatic cars behave as I don't have one. I would assume that if you put it in neutral, it would do the same thing.

335 S · 06-23-2009, 07:59 AM

Rolling into the garage, clutch in, no ignition cut. Only when fully stopped will it cut. I've been trying to execute Dan Tana entries.

SenorFunkyPants · 06-23-2009, 10:42 AM

I would want it to shut the engine off in a DCT car at any speed...imagine the electronic throttle going nuts and jamming open how are you going to stop the car from high speed?
You can't put it in neutral and jamming on the brakes hard is going to be fun.

06-22-2009, 11:42 PM	#1
spyderco10 Colonel 63 Rep 2,426 Posts Drives: AW E92 M3 6MT Join Date: Jul 2008 Location: Honolulu, HI iTrader: (0)	I've always wanted to know... if while at speed, and you press the engine on/off button, will your engine shut off? I've been wondering this myself for a while, and I've also been asked this. Does anyone know what will happen, or been crazy enough to try it? __________________ “For God so loved the world that he gave his one and only Son, that whoever believes in him shall not perish but have eternal life.” - John 3:16
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06-22-2009, 11:53 PM	#2
Lemans_Blue_M Automotive Industry Insider 462 Rep 1,948 Posts Drives: Lemans Blue M3 Join Date: Aug 2007 Location: Texas iTrader: (0)	Okay I'll try it...right after you. __________________ The best is yet to come...
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06-22-2009, 11:59 PM	#3
akssriva Private First Class 17 Rep 130 Posts Drives: 2009 M3 (E90) Join Date: May 2008 Location: SF Bay Area iTrader: (0)	I'm not about to find out. Some things are best left undone. __________________ 2009 M3 E90, Jerez Black, Red Nov leather, Premium Pkg, Tech Pkg, DCT, 19" Wheels and loads of attitude
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06-23-2009, 12:02 AM	#4
sard Major 235 Rep 1,334 Posts Drives: 2008 M3 Join Date: Oct 2008 Location: Southern California iTrader: (1)	Lol... funny you ask this..I've wondered also. One time I was slowwly reversing out of my driveway and I went to close the garage door, but stupidly hit the on/off button on my dct car. It automatically put the car in park and it jerked to a halt. Thank god I was going very slow. I've wondered if I was driving at like 40+ mph, if I or someone hit the on/off button, would the car explode into smithereens. __________________ E92 M3 - DCT - 20" BBS LM-R - KW Clubsport - Akrapovic Exhaust - Powerchip Tune - Arkym Aero Kit - HID Halo
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06-23-2009, 12:08 AM	#5
amgthis Tire Racks 53 Rep 1,232 Posts Drives: AW 1M Coupè Join Date: Apr 2008 Location: San Francisco, CA iTrader: (0)	I'd assume the car would override that order if it deems the speed unsafe to shut off the car or put the passengers in any danger. Who wants to test my guess? __________________ Alpine White 1M Coupè Gone:2006 Alpine White E46 M3 ZCP RIP
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06-23-2009, 12:14 AM	#6
Serious 1M advocate 214 Rep 878 Posts Drives: 2018 S4. 2011 M3. 2012 S1000RR Join Date: Mar 2008 Location: Seattle iTrader: (0)	Nothing will other then losing power assist on brakes and steering if the ignition is still on... but for the record ive tried to do this in a loaner 09 328i and it wouldn't work at speed but under about 10-15mph it turned off. __________________ 2012 BMW S1000RR 2011 BMW M3
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06-23-2009, 12:17 AM	#7
sard Major 235 Rep 1,334 Posts Drives: 2008 M3 Join Date: Oct 2008 Location: Southern California iTrader: (1)	Are you guys talking about 6mt or dct __________________ E92 M3 - DCT - 20" BBS LM-R - KW Clubsport - Akrapovic Exhaust - Powerchip Tune - Arkym Aero Kit - HID Halo
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06-23-2009, 12:18 AM	#8
Lemans_Blue_M Automotive Industry Insider 462 Rep 1,948 Posts Drives: Lemans Blue M3 Join Date: Aug 2007 Location: Texas iTrader: (0)	Nope, wrong answers guys...the car will stop if you press the button. (even at speed) It's an emergency shutdown safety feature in case of an engine fire of some other catastrophic mechanical failure. Not kidding guys, it's there to help you keep a potential problem from escalating. __________________ The best is yet to come...
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06-23-2009, 12:19 AM	#9
bunnn Colonel 86 Rep 2,266 Posts Drives: like a grandma Join Date: May 2009 Location: Toronto iTrader: (12)	my dad decided to try this on his 09 X5 at 40km/h it didn't shut off, we never tried at lower speed, i wonder if we have a problem
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06-23-2009, 12:24 AM	#10
spyderco10 Colonel 63 Rep 2,426 Posts Drives: AW E92 M3 6MT Join Date: Jul 2008 Location: Honolulu, HI iTrader: (0)	I have a 6MT, so not sure what would happen if it were in gear when pressed. But my boss has an 328i automatic and one day we were driving on the highway and he asked me what would happen if he pressed the engine on/off button? I really don't know the answer to this one. The first person to definitively find out gets a cookie. __________________ “For God so loved the world that he gave his one and only Son, that whoever believes in him shall not perish but have eternal life.” - John 3:16
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06-23-2009, 12:31 AM	#14
Lemans_Blue_M Automotive Industry Insider 462 Rep 1,948 Posts Drives: Lemans Blue M3 Join Date: Aug 2007 Location: Texas iTrader: (0)	Well I know that it works at 15 mph or less with comfort access... If you are talking about HIGHWAY SPEEDS, then I would say NO. That could lead to a serious accident, if your car all of a sudden shutdown in the middle of the interstate going 70mph! __________________ The best is yet to come...
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06-23-2009, 12:40 AM	#15
roller Private First Class 10 Rep 164 Posts Drives: E92 Join Date: Jun 2009 Location: OC, CA iTrader: (0)	Maybe if you held the button down. I don't see much damage if you're in neutral. Other than just cruising to a stop with no power steering/brakes.
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06-23-2009, 03:47 AM	#18
URBAN LEGEND Rocky 412 Rep 3,085 Posts Drives: 16 M5, 18 ZL1 1LE, 18 M3 Join Date: Feb 2009 Location: Brenham TX iTrader: (0)	It won't do anything but give you the gong at speed that is. __________________ 22 Audi RS E-Tron GT 21 Model S Plaid
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06-23-2009, 06:40 AM	#20
Ben335 Captain 46 Rep 891 Posts Drives: 09 M3 Finally here Join Date: Jul 2008 Location: Virginia iTrader: (2)	Ok, let me confirm that it does shut down the engine at all speeds, but with the clutch in. My previous 335 was having massive engine problems and I have reset the limp mode several times which running at speed. The key is the clutch. With it out, the car will not turn off. With the clutch in, it will. I don't know how Automoatic cars behave as I don't have one. I would assume that if you put it in neutral, it would do the same thing.
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06-23-2009, 07:59 AM	#21
335 S Vile and Depraved 31 Rep 368 Posts Drives: 2011 E93 M3 Join Date: Apr 2008 Location: Catatonic State iTrader: (0)	Rolling into the garage, clutch in, no ignition cut. Only when fully stopped will it cut. I've been trying to execute Dan Tana entries.
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06-23-2009, 10:42 AM	#22
SenorFunkyPants Brigadier General 2511 Rep 4,381 Posts Drives: 2019 M5 Join Date: Mar 2009 Location: UK iTrader: (0)	I would want it to shut the engine off in a DCT car at any speed...imagine the electronic throttle going nuts and jamming open how are you going to stop the car from high speed? You can't put it in neutral and jamming on the brakes hard is going to be fun.
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