DCT Issue

StLouisE92 · 03-10-2019, 11:19 PM

When I'm using the paddle shifter to down shift from 3rd, about one out of every 10 shifts will go from 3rd to first. The same happens from 4th straight to 2nd. This never occurs when I use the shifter in the middle to down shift. Any ideas?
Thanks

msan · 03-11-2019, 12:38 AM

Quote:

Originally Posted by StLouisE92

When I'm using the paddle shifter to down shift from 3rd, about one out of every 10 shifts will go from 3rd to first. The same happens from 4th straight to 2nd. This never occurs when I use the shifter in the middle to down shift. Any ideas?
Thanks

You have aftermarket paddles? Or has the car ever had aftermarket paddles?

amrazM · 03-11-2019, 03:58 AM

Do you have all functionality in the LH side of multi function buttons?

StLouisE92 · 03-11-2019, 08:49 AM

Quote:

Originally Posted by msan

You have aftermarket paddles? Or has the car ever had aftermarket paddles?

Yes, there are aftermarket paddle shifters on the vehicle. I put them on about 9 months ago. The problem started maybe 6 months ago.

wfdeacon88 · 03-11-2019, 09:39 AM

Wow 3rd to 1st sounds like a horrible glitch... depending on how fast you.are driving, could be ugly.

StLouisE92 · 03-11-2019, 08:49 PM

Quote:

Originally Posted by amrazM

Do you have all functionality in the LH side of multi function buttons?

Yes, it all works.

msan · 03-11-2019, 08:52 PM

I would say you need to disassemble and clean the contacts on the left shifter module, and/or check for pinched wiring. It’s a strong guess the problem is due to installing the aftermarket paddles.

amrazM · 03-11-2019, 09:35 PM

Quote:

Originally Posted by wfdeacon88

Wow 3rd to 1st sounds like a horrible glitch... depending on how fast you.are driving, could be ugly.

Dct won’t downshift if the revs are too high and will over rev the engine

wfdeacon88 · 03-11-2019, 09:36 PM

Quote:

Originally Posted by amrazM

Quote:

Originally Posted by wfdeacon88

Wow 3rd to 1st sounds like a horrible glitch... depending on how fast you.are driving, could be ugly.

Dct won’t downshift if the revs are too high and will over rev the engine

Yeah but there are times when going to first from third would be under the rev limit but not good for the transmission..

StLouisE92 · 03-11-2019, 10:25 PM

Quote:

Originally Posted by msan

I would say you need to disassemble and clean the contacts on the left shifter module, and/or check for pinched wiring. It’s a strong guess the problem is due to installing the aftermarket paddles.

Sounds like a good idea.
Thanks

03-10-2019, 11:19 PM	#1
StLouisE92 New Member 0 Rep 13 Posts Drives: 2010 BMW M3 Join Date: Aug 2018 Location: St. Louis, MO iTrader: (0)	DCT Issue When I'm using the paddle shifter to down shift from 3rd, about one out of every 10 shifts will go from 3rd to first. The same happens from 4th straight to 2nd. This never occurs when I use the shifter in the middle to down shift. Any ideas? Thanks
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03-11-2019, 03:58 AM	#3
amrazM mTekMods 2139 Rep 2,898 Posts Drives: like a granny. Join Date: Jan 2010 Location: Manhatan iTrader: (1)	Do you have all functionality in the LH side of multi function buttons?
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03-11-2019, 09:39 AM	#5
wfdeacon88 Major 1105 Rep 1,389 Posts Drives: E90 M3 Join Date: Sep 2018 Location: Triad, NC iTrader: (0)	Wow 3rd to 1st sounds like a horrible glitch... depending on how fast you.are driving, could be ugly.
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03-11-2019, 08:52 PM	#7
msan Major 403 Rep 1,171 Posts Drives: 2011 E90 M3 / 2012 X5 35i M Sp Join Date: May 2015 Location: Los Angeles, CA iTrader: (16)	I would say you need to disassemble and clean the contacts on the left shifter module, and/or check for pinched wiring. It’s a strong guess the problem is due to installing the aftermarket paddles.
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