Click / knock sound with auto start stop

bk_g80_m3 · 02-28-2017, 12:22 PM

I just picked up my M2 over the weekend. I love the car. I switched on auto start / stop in traffic today just to see how it works. It's great however I get a loud click / knock sound every time the car stops then starts.

Is that a normal noise? I've never used stop start on another m2 before so I'm not sure.

Thanks!

Link to video:

gmzanatta · 02-28-2017, 12:57 PM

I wouldn't know...I pressed that button once, to turn it off when I picked up the car and haven't touched it since.

It doesn't sound bad though. Also keep in mind the M2 has pretty much all of its sound deadening stripped off so you hear a lot more of the car at work.

SullyM2 · 02-28-2017, 12:57 PM

Quote:

Originally Posted by fjork_duf

I just picked up my M2 over the weekend. I love the car. I switched on auto start / stop in traffic today just to see how it works. It's great however I get a loud click / knock sound every time the car stops then starts.

Is that a normal noise? I've never used stop start on another m2 before so I'm not sure.

Thanks!

Link to video:

I just picked mine upload week and mine does not make any strange noises on engine stop/start when in neutral at light.

bk_g80_m3 · 02-28-2017, 01:06 PM

Hmm ok. I'll mention the noise once I take the car in for the 1200mi service.

bk_g80_m3 · 02-28-2017, 01:16 PM

I did some quality googling. It may be an instance of "they all do that"

For the above answer do you have MDCT or 6MT? (I have DCT)

http://f80.bimmerpost.com/forums/sho...6#post21345216

bk_g80_m3 · 02-28-2017, 01:20 PM

OK on another thread for M5s, a guy said the sound comes from the car putting itself into Park when it shuts off.

I'd say that's case closed. Anyway, I hope this helps someone in the future if they wonder about the sound!

tutankhamon · 02-28-2017, 02:05 PM

I too have never turned that feature back on. Should test it out to see if that same sound exists with a MT

gmzanatta · 02-28-2017, 02:38 PM

Quote:

Originally Posted by tutankhamon

I too have never turned that feature back on. Should test it out to see if that same sound exists with a MT

I does not. Just trying this out in my parking lot as I type this. I have a MY16 6MT.

Dimis · 03-01-2017, 03:59 AM

You guys have the auto start/stop off permanently disengaged ?How do you disable it ? on mine it comes on every time i shut the car and i have to manually switch it off every time i start the car !

gmzanatta · 03-01-2017, 06:51 AM

Quote:

Originally Posted by Dimis

You guys have the auto start/stop off permanently disengaged ?How do you disable it ? on mine it comes on every time i shut the car and i have to manually switch it off every time i start the car !

For US and Canada cars, you press once and it stays off.

For European and ROTW cars, you have to press it every time or have it coded to NA standards.

DivideBYZero · 03-01-2017, 10:59 AM

Quote:

Originally Posted by Dimis

You guys have the auto start/stop off permanently disengaged ?How do you disable it ? on mine it comes on every time i shut the car and i have to manually switch it off every time i start the car !

I have mine coded to be a toggle that the car remembers between trips. Stop/start has no place on a performance car and I can enable it if stuck in bad traffic.

Dimis · 03-01-2017, 11:23 AM

Thank you for replies, did you have yours done at the dealer or aftermarket ?

gmzanatta · 03-01-2017, 11:36 AM

Quote:

Originally Posted by Dimis

Thank you for replies, did you have yours done at the dealer or aftermarket ?

Unless the dealer is your buddy, you'll need to go after market. They aren't supposed to code stuff from other markets to your car.

DivideBYZero · 03-01-2017, 12:08 PM

Quote:

Originally Posted by Dimis

Thank you for replies, did you have yours done at the dealer or aftermarket ?

Dealer won't do it. Check my thread in the iDrive/Nav forum about the app BimmerCode. It's very simple and you can do so much more than just code S/S.

Stu Pedasho · 03-01-2017, 12:21 PM

Quote:

Originally Posted by fjork_duf

Is that a normal noise? I've never used stop start on another m2 before so I'm not sure.

If you can tolerate paddle shifting, you can tolerate ANYTHING!

bk_g80_m3 · 03-01-2017, 11:24 PM

Quote:

Originally Posted by Stu Pedasho

Quote:

Originally Posted by fjork_duf

Is that a normal noise? I've never used stop start on another m2 before so I'm not sure.

If you can tolerate paddle shifting, you can tolerate ANYTHING!

Har har- I've gotten lazy yes. Fwiw the M2 has the best DCT around in attainable cars.

FreoGuitar · 09-01-2019, 03:33 AM

Quote:

Originally Posted by fjork_duf

I just picked up my M2 over the weekend. I love the car. I switched on auto start / stop in traffic today just to see how it works. It's great however I get a loud click / knock sound every time the car stops then starts.

Is that a normal noise? I've never used stop start on another m2 before so I'm not sure.

Thanks!

Link to video:

Mine does exactly that.

Sometimes the internet search function can be reassuring!

akkando · 09-01-2019, 02:51 PM

Quote:

Originally Posted by Dimis

You guys have the auto start/stop off permanently disengaged ?How do you disable it ? on mine it comes on every time i shut the car and i have to manually switch it off every time i start the car !

It won't work if you put the car in sequential/manual mode. That way you don't have to turn it off if you just activate manual mode every time you hop in the car.

Also you can code out that it defaults to on with bimnercode

Beemerm3 · 10-10-2019, 03:35 PM

I find my start stop clicks too. Strange that it does.

02-28-2017, 12:22 PM	#1
bk_g80_m3 Second Lieutenant 191 Rep 285 Posts Drives: 2017 M2 Join Date: Dec 2007 Location: California iTrader: (0)	I just picked up my M2 over the weekend. I love the car. I switched on auto start / stop in traffic today just to see how it works. It's great however I get a loud click / knock sound every time the car stops then starts. Is that a normal noise? I've never used stop start on another m2 before so I'm not sure. Thanks! Link to video: Last edited by bk_g80_m3; 02-28-2017 at 12:32 PM..
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02-28-2017, 12:57 PM	#2
gmzanatta Colonel 1823 Rep 2,948 Posts Drives: LBB 6MT M2 # 660/713 Join Date: Feb 2016 Location: NB iTrader: (0)	I wouldn't know...I pressed that button once, to turn it off when I picked up the car and haven't touched it since. It doesn't sound bad though. Also keep in mind the M2 has pretty much all of its sound deadening stripped off so you hear a lot more of the car at work.
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02-28-2017, 01:06 PM	#4
bk_g80_m3 Second Lieutenant 191 Rep 285 Posts Drives: 2017 M2 Join Date: Dec 2007 Location: California iTrader: (0)	Hmm ok. I'll mention the noise once I take the car in for the 1200mi service.
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02-28-2017, 01:16 PM	#5
bk_g80_m3 Second Lieutenant 191 Rep 285 Posts Drives: 2017 M2 Join Date: Dec 2007 Location: California iTrader: (0)	I did some quality googling. It may be an instance of "they all do that" For the above answer do you have MDCT or 6MT? (I have DCT) http://f80.bimmerpost.com/forums/sho...6#post21345216
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02-28-2017, 01:20 PM	#6
bk_g80_m3 Second Lieutenant 191 Rep 285 Posts Drives: 2017 M2 Join Date: Dec 2007 Location: California iTrader: (0)	OK on another thread for M5s, a guy said the sound comes from the car putting itself into Park when it shuts off. I'd say that's case closed. Anyway, I hope this helps someone in the future if they wonder about the sound!
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02-28-2017, 02:05 PM	#7
tutankhamon Private First Class 164 Rep 181 Posts Drives: 2017 LBB BMW M2 Join Date: Jun 2016 Location: Toronto iTrader: (0)	I too have never turned that feature back on. Should test it out to see if that same sound exists with a MT
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03-01-2017, 03:59 AM	#9
Dimis New Member 23 Rep 26 Posts Drives: M2 LBB DCT Join Date: Nov 2016 Location: London iTrader: (0)	You guys have the auto start/stop off permanently disengaged ?How do you disable it ? on mine it comes on every time i shut the car and i have to manually switch it off every time i start the car !
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03-01-2017, 11:23 AM	#12
Dimis New Member 23 Rep 26 Posts Drives: M2 LBB DCT Join Date: Nov 2016 Location: London iTrader: (0)	Thank you for replies, did you have yours done at the dealer or aftermarket ?
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10-10-2019, 03:35 PM	#19
Beemerm3 First Lieutenant 59 Rep 345 Posts Drives: 16' BMW m3 Join Date: Jul 2019 Location: Sacramento iTrader: (0)	I find my start stop clicks too. Strange that it does.
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