Disturbing 3rd to 2nd downshift, DCT....

BKarktic3 · 09-14-2015, 05:55 PM

Hi All,

After 3 years of ownership and 40k miles of driving, the car has started (3 times in last 6 weeks or so) to make a very loud clunk as I roll to a stop in manual shift mode (no matter the setting 1-6).

The last two times absolutely scared the crap out of me, as the clunks were so disruptive that I swore I hit something in the road. Definitely not normal. I'm not throwing any codes....but would like to get after it proactively if possible.

08, 62k miles, supercharged, BPM Tune, stock DCT Tune

Other than this, ive had no issues. thoughts? I've searched, but found nothing this disruptive. This is my 4th bmw, and have never encountered anything like this.

Thanks.

BK

4corners · 09-15-2015, 11:57 AM

Take a good look at all the mounts, especially the diff bolts.

BKarktic3 · 09-15-2015, 07:49 PM

will do, have you had this issue?

4corners · 09-15-2015, 09:51 PM

Quote:

Originally Posted by BKarktic3

will do, have you had this issue?

Not personally, but what you describe reminded me of other posts related to clunks, etc. Start with the easy stuff. The transmissions are VERY strong.

crl8474 · 09-17-2015, 02:38 PM

Mine does something similar but on when in "D" mode. Occassionally I'll be sitting in traffic - completely still - and it feels like someone ran into the back of the car. Scares the hell out of me everytime. Dealer hasn't been able to replicate.

Arben · 09-19-2015, 10:46 PM

Mine did this in cold weather. They reflashed and updated me to 241e and a dct flash. Seemed to fix the issue but I haven't had serious cold weather to test it again. It can really seem like you got hit when it happens.

09-14-2015, 05:55 PM	#1
BKarktic3 Second Lieutenant 13 Rep 201 Posts Drives: e92 M3 DCT Space Gray/Fox Red Join Date: Jan 2013 Location: Alpharetta, GA iTrader: (2)	Disturbing 3rd to 2nd downshift, DCT.... Hi All, After 3 years of ownership and 40k miles of driving, the car has started (3 times in last 6 weeks or so) to make a very loud clunk as I roll to a stop in manual shift mode (no matter the setting 1-6). The last two times absolutely scared the crap out of me, as the clunks were so disruptive that I swore I hit something in the road. Definitely not normal. I'm not throwing any codes....but would like to get after it proactively if possible. 08, 62k miles, supercharged, BPM Tune, stock DCT Tune Other than this, ive had no issues. thoughts? I've searched, but found nothing this disruptive. This is my 4th bmw, and have never encountered anything like this. Thanks. BK __________________ -Bryan e92 M3 Coupe DCT \| Space Gray/Fox Red \| VF620 \| Forgestar \| RD Sport \| B&B
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09-15-2015, 11:57 AM	#2
4corners Major 391 Rep 1,133 Posts Drives: 2008 Jet Black M3 Coupe Join Date: Feb 2011 Location: Yucca Valley, CA - Kelowna, BC iTrader: (0) Garage List 2003 Blue Bird TC2000 [0.00] 2005 BMW 325Ci [0.00] 2008 BMW M3 [0.00]	Take a good look at all the mounts, especially the diff bolts.
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09-15-2015, 07:49 PM	#3
BKarktic3 Second Lieutenant 13 Rep 201 Posts Drives: e92 M3 DCT Space Gray/Fox Red Join Date: Jan 2013 Location: Alpharetta, GA iTrader: (2)	will do, have you had this issue? __________________ -Bryan e92 M3 Coupe DCT \| Space Gray/Fox Red \| VF620 \| Forgestar \| RD Sport \| B&B
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09-17-2015, 02:38 PM	#5
crl8474 Second Lieutenant 48 Rep 207 Posts Drives: 2011 E90 M3 Join Date: Jan 2011 Location: Prosper, Tx iTrader: (1)	Mine does something similar but on when in "D" mode. Occassionally I'll be sitting in traffic - completely still - and it feels like someone ran into the back of the car. Scares the hell out of me everytime. Dealer hasn't been able to replicate.
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09-19-2015, 10:46 PM	#6
Arben Dunce Cap 6 Rep 75 Posts Drives: '12 E92 M Join Date: Sep 2014 Location: IL iTrader: (0)	Mine did this in cold weather. They reflashed and updated me to 241e and a dct flash. Seemed to fix the issue but I haven't had serious cold weather to test it again. It can really seem like you got hit when it happens.
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