ASS not working

Dan_335i · 02-13-2014, 12:39 PM

In a touchless car wash. Car is not in park. In D with foot on brake. Steering wheel is straight.

The line is like 10 cars long about 5 mins per car. So my ass is not working how come?

Oh yeh and oil temp is up to temperature. Outside temp is -7C

PS im like 5th car in line and i gotta pee bad

jdong · 02-13-2014, 12:44 PM

Usually the EfficientDynamics screen hints towards why ASS did not engage.

In a carwash line, if you're repeatedly stopping and going as cars go through, you'll trip the "stop and go" detection and the car will stay on to prevent excessive restarts.

It's also pretty cold outside. And 5 minutes is way too long for the car to stop anyway; you've only got a regular 12V battery and it's not terribly fast at recharging.

ASS is meant to optimize for the situation where you are driving 90% of the time and then reach a stoplight that lasts a minute or two. It is not meant for slow-speed or "stop and go" traffic, waiting at a stop sign line where you need to crawl at slow speeds every once in a while, extended length stops like waiting for people, etc etc etc. These scenarios require a more hybridized setup, like a true mild hybrid or a full hybrid.

bcl0328 · 02-13-2014, 01:32 PM

pretty sure it's because of the outside temperature. it doesn't work below a certain temp.

stormlv · 02-13-2014, 01:42 PM

I have nothing important to add, except, that that's one really funny post title :P

Cyberdemon · 02-13-2014, 03:09 PM

Could be a few reasons:

1-you didn't make it up to ~3mph or the cutoff speed to "Reactivate" the auto stop start.
2- It's too cold and even if your oil is up to temperature, the HVAC is telling the engine to keep running so you don't freeze to death (or keep the AC compressor running if you have the AC button on).
3- Battery needs juice

335BOY · 02-13-2014, 03:11 PM

Quote:

Originally Posted by Dan_335i

In a touchless car wash. Car is not in park. In D with foot on brake. Steering wheel is straight.

The line is like 10 cars long about 5 mins per car. So my ass is not working how come?

Oh yeh and oil temp is up to temperature. Outside temp is -7C

PS im like 5th car in line and i gotta pee bad

Need more fibre.

cailas · 02-13-2014, 03:21 PM

I think it works only from -1.

Kowboi · 02-13-2014, 09:55 PM

My ASS kicked in today (giggle) when I stopped at a red light, and it was -10 deg Celsius out.

lawgone · 02-13-2014, 11:14 PM

Try some Activia.

Feanor · 02-14-2014, 02:38 PM

Neither of my ASSes have ever worked when it's as cold as -7.

Thlian · 02-14-2014, 03:36 PM

You might want to see a doctor!

Slagish · 02-15-2014, 05:58 PM

I had similar issue and was curious. I found that if I let the car coast more than 20 feet or so with my foot completely off the brakes, when I stop it would shut off.

raleedy · 02-16-2014, 08:52 AM

So you're washing the car when it's below freezing? How does that work?

BavarianFanatic · 02-16-2014, 09:10 AM

Quote:

Originally Posted by raleedy

So you're washing the car when it's below freezing? How does that work?

Why wouldn't it? I get my cars washed every time I drive them during the winter. Sometimes more than once a day.

Blubaron79 · 02-16-2014, 09:36 AM

I believe under a certain temp it does not work.

joz · 02-16-2014, 10:13 AM

its been -20C here and I have had it work. As long as the car is up to temp I'm pretty sure it works.

I don't use ASS too often, but I have tried in a carwash line because of the constant idling and I don't want start/stop manually. I believe the issue is you need to move a certain distance forward or the car thinks you are in stop and go traffic. When I was in the carwash line last time if I moved about a full car length it would engage, anything less then that and i got the indicator saying ASS not engaged. Like some others have mentioned here there are some other factors such as steering wheel being turned etc.

bbq · 02-19-2014, 11:34 AM

Your manual is your friend.

From the manual:

The engine is not switched off automatically in the following situations:
- External temperature below approx. +37F/+3C.

Pretty much dont expect it to "work" during the typical Canadian winter.

shoptb · 02-20-2014, 09:07 AM

Quote:

Originally Posted by lawgone

Try some Activia.

SomeRandomer123 · 02-20-2014, 09:13 AM

Owners manual states A.S.S. operation is inhibited at 3C and below doesn't it...

dsgs · 02-21-2014, 09:27 AM

The manual says it won't work below certain temperatures but it definitely does happen sometimes. I notice it when I leave from the garage in the morning. I suspect the car is warm enough on the inside, despite the air temperature being cold.

I don't think it uses the sensor that shows you the outside temperature. My guess is that there is a different sensor inside the engine that controls the temperature sensitive disabling.

In short, when it works and when it doesn't seems more complex than the manual would have us think.

02-13-2014, 12:39 PM	#1
Dan_335i Captain 102 Rep 936 Posts Drives: 2014 335i EBII MSport Join Date: Aug 2012 Location: toronto iTrader: (0)	ASS not working In a touchless car wash. Car is not in park. In D with foot on brake. Steering wheel is straight. The line is like 10 cars long about 5 mins per car. So my ass is not working how come? Oh yeh and oil temp is up to temperature. Outside temp is -7C PS im like 5th car in line and i gotta pee bad
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02-13-2014, 12:44 PM	#2
jdong Lieutenant 19 Rep 503 Posts Drives: 2013 BMW ActiveHybrid 3 Join Date: Dec 2012 Location: NorCal iTrader: (0)	Usually the EfficientDynamics screen hints towards why ASS did not engage. In a carwash line, if you're repeatedly stopping and going as cars go through, you'll trip the "stop and go" detection and the car will stay on to prevent excessive restarts. It's also pretty cold outside. And 5 minutes is way too long for the car to stop anyway; you've only got a regular 12V battery and it's not terribly fast at recharging. ASS is meant to optimize for the situation where you are driving 90% of the time and then reach a stoplight that lasts a minute or two. It is not meant for slow-speed or "stop and go" traffic, waiting at a stop sign line where you need to crawl at slow speeds every once in a while, extended length stops like waiting for people, etc etc etc. These scenarios require a more hybridized setup, like a true mild hybrid or a full hybrid. __________________
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02-13-2014, 01:32 PM	#3
bcl0328 Major 127 Rep 1,185 Posts Drives: 2012 328i Join Date: Mar 2012 Location: Abingdon, MD iTrader: (0)	pretty sure it's because of the outside temperature. it doesn't work below a certain temp.
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02-13-2014, 01:42 PM	#4
stormlv Human 932 Rep 1,200 Posts Drives: Yes Join Date: Nov 2013 Location: Geneva iTrader: (1)	I have nothing important to add, except, that that's one really funny post title :P __________________ 2023 BMW M4 CP xDr \| 510HP / 650Nm \| Isle of Man Green \| Photo album Sold 2018 BMW M4 DCT / ZCP\| 450HP / 550Nm \| Sakhir Orange \| Photo album \| Tribute Sold 2014 BMW 435xd \| 360HP / 710Nm \| Estoril Blue \| Photo album 2010 BMW Z4 sDrive35i DKG \| 306 HP / 400Nm \| Space Gray \| Photo album
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02-13-2014, 03:09 PM	#5
Cyberdemon Brigadier General 1538 Rep 3,331 Posts Drives: 2020 X5 40i, 2018 M3 Comp Join Date: Jun 2012 Location: Long Island NY iTrader: (3)	Could be a few reasons: 1-you didn't make it up to ~3mph or the cutoff speed to "Reactivate" the auto stop start. 2- It's too cold and even if your oil is up to temperature, the HVAC is telling the engine to keep running so you don't freeze to death (or keep the AC compressor running if you have the AC button on). 3- Battery needs juice __________________ Current: '20 X5, '18 M3 ZCP Previous: '11 E90 335i, '11 E90 M3, '16 VW GTI, '15 M235i, '13 335i, '08 TL-S, '00 Corvette
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02-13-2014, 03:21 PM	#7
cailas Private First Class 31 Rep 114 Posts Drives: BMW M5 F90 2018 Join Date: Oct 2013 Location: Lithuania iTrader: (0)	I think it works only from -1.
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02-13-2014, 09:55 PM	#8
Kowboi Second Lieutenant 24 Rep 259 Posts Drives: 328i, 335i, 528ix, 540ix Join Date: Nov 2010 Location: Calgary iTrader: (0)	My ASS kicked in today (giggle) when I stopped at a red light, and it was -10 deg Celsius out.
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02-13-2014, 11:14 PM	#9
lawgone Lieutenant 64 Rep 543 Posts Drives: 2014 335i M Sport Join Date: Jul 2010 Location: Cincinnati, OH iTrader: (0)	Try some Activia. __________________ 2014 335i f30 M Sport, Mineral Gray, Premium, Nav, Comfort Access, M Sport Brakes, 18" Potenza RFT Summer/Staggered 2011 328xi e92 M Sport, Space Grey, Premium, Nav, Comfort Access, BMW Apps
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02-14-2014, 02:38 PM	#10
Feanor Lieutenant 61 Rep 444 Posts Drives: BMW F30 320d Luxury 6MT Join Date: Feb 2012 Location: United Kingdom iTrader: (0)	Neither of my ASSes have ever worked when it's as cold as -7.
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02-14-2014, 03:36 PM	#11
Thlian Second Lieutenant 99 Rep 231 Posts Drives: 320d XDrive AT Touring M-Sport Join Date: Dec 2013 Location: Norway iTrader: (0)	You might want to see a doctor! __________________ 2014 320d Xdrive AT Touring M-Sport Advantage Edition
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02-15-2014, 05:58 PM	#12
Slagish Enlisted Member 4 Rep 30 Posts Drives: '14 F30 320i xDrive Join Date: Jan 2014 Location: Chicago, IL iTrader: (0)	I had similar issue and was curious. I found that if I let the car coast more than 20 feet or so with my foot completely off the brakes, when I stop it would shut off.
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02-16-2014, 08:52 AM	#13
raleedy Colonel 160 Rep 2,248 Posts Drives: 2016 228i 6-speed Join Date: Jul 2005 Location: Portland, Oregon iTrader: (0)	So you're washing the car when it's below freezing? How does that work?
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02-16-2014, 09:36 AM	#15
Blubaron79 Brigadier General 1435 Rep 4,724 Posts Drives: 2021 M340i xDrive Join Date: May 2009 Location: PA iTrader: (0)	I believe under a certain temp it does not work. __________________ Current: 2021 M340i xDrive Previous: '18 340i xDrive; '15 335 xDrive; '14 435i xDrive; '09 335 E92 xDrive
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02-16-2014, 10:13 AM	#16
joz First Lieutenant 85 Rep 306 Posts Drives: 2014 335xi Join Date: Dec 2013 Location: t.o iTrader: (0)	its been -20C here and I have had it work. As long as the car is up to temp I'm pretty sure it works. I don't use ASS too often, but I have tried in a carwash line because of the constant idling and I don't want start/stop manually. I believe the issue is you need to move a certain distance forward or the car thinks you are in stop and go traffic. When I was in the carwash line last time if I moved about a full car length it would engage, anything less then that and i got the indicator saying ASS not engaged. Like some others have mentioned here there are some other factors such as steering wheel being turned etc.
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02-19-2014, 11:34 AM	#17
bbq Private First Class 33 Rep 119 Posts Drives: 328xi Join Date: Aug 2005 Location: Somewhere out there iTrader: (0)	Your manual is your friend. From the manual: The engine is not switched off automatically in the following situations: - External temperature below approx. +37F/+3C. Pretty much dont expect it to "work" during the typical Canadian winter.
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02-20-2014, 09:13 AM	#19
SomeRandomer123 Colonel 307 Rep 2,612 Posts Drives: F30 328i Luxury - Sport Auto Join Date: May 2011 Location: Lancashire, North West England, UK iTrader: (0)	Owners manual states A.S.S. operation is inhibited at 3C and below doesn't it... __________________ Gone: 2006 BMW E60 520d SE 6MT Gone: 2009 BMW E90-LCI 330d SE 6MT Current: 2012 F30 328i Luxury 8AT On Order: 2015 Audi A6 Avant Ultra, Black Edition (sorry!)
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02-21-2014, 09:27 AM	#20
dsgs New Member 12 Rep 22 Posts Drives: 2024 BMW i5 M60 Join Date: Mar 2013 Location: Toronto iTrader: (0)	The manual says it won't work below certain temperatures but it definitely does happen sometimes. I notice it when I leave from the garage in the morning. I suspect the car is warm enough on the inside, despite the air temperature being cold. I don't think it uses the sensor that shows you the outside temperature. My guess is that there is a different sensor inside the engine that controls the temperature sensitive disabling. In short, when it works and when it doesn't seems more complex than the manual would have us think.
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