DCT gearbox stuck at second gear!!

zeez_Dubai · 01-21-2010, 02:06 AM

Hello,

yesterday i was racing the old M5, the 440hp i had the setup sport + and gear in manual. The gear was in 2nd and when it reached close to redline i felt that it got stuck on something and it didnt change to 3rd.

I had to slow down as the gear didnt want to change automatically, i returned the car in D and normal mode and everything went back smooth.

I raced him again from 40kmh and i was ahead :P

but am not sure what happened there.

BlueZ4AZ · 01-21-2010, 09:28 AM

Were you in launch control? If so, then it should have shifted.

Micky Dee · 01-21-2010, 03:16 PM

You can't beat a good old manual transmission! I believe some of these new double clutch systems can get confused/cause problems. Have it checked out by the dealer if it happens again.

BlueZ4AZ · 01-21-2010, 03:29 PM

Quote:

Originally Posted by Micky Dee

You can't beat a good old manual transmission! I believe some of these new double clutch systems can get confused/cause problems. Have it checked out by the dealer if it happens again.

Your thought that a manual transmission can't be beat is your opinion, and you are entitle to that, but it is still early to jump to the conclusion you drew. It may just be that they thought they were in Launch Control, but they weren't. Launch control will not work if the DCT is set to manual.

puyo · 01-21-2010, 03:41 PM

Correction: Launch Control ONLY works when manual mode is engaged. See owner's manual on Launch Control, Step 3.

Quote:

Originally Posted by BlueZ4AZ

Launch control will not work if the DCT is set to manual.

Jay Zone · 01-21-2010, 04:00 PM

DCT vs Manual performance is documented as to which has better acceleration. So it all comes down to preference.

If there is a problem that occurred your car may have thrown an error code that your dealer would see when it goes in for service.

Same happened to me in my 335i Dinan. As it turned out I hit a shift paddle on the steering and didn't know it which put me in manual mode and the car bounced against the rev limiter and stayed there. Maybe that is what happened.

Odds are you don't have a problem but take it in and see if there are any error codes.

If everything is OK you get a free wash anyway.

JZ

BlueZ4AZ · 01-21-2010, 04:23 PM

Quote:

Originally Posted by puyo

Correction: Launch Control ONLY works when manual mode is engaged. See owner's manual on Launch Control, Step 3.

I see that in the owners manual now. I though it was in S mode that you start Launch Control, but it is in fact, manual mode. A true indication I have not tried it myself yet.

But the situation still exists where the initial poster may have though they were in Launch Control, but was not, for whatever the reason. The fact the initial poster was EXPECTING the transmission to upshift while in manual mode, is an indication they thought the car was in Lauch Control.

BlueZ4AZ · 01-21-2010, 04:25 PM

Quote:

Originally Posted by Jay Zone

DCT If everything is OK you get a free wash anyway.

JZ

How many new scratches does that free car wash come with?

No grunt at the dealership will ever lay a sponge on my car.

Jay Zone · 01-21-2010, 04:31 PM

Quote:

Originally Posted by BlueZ4AZ

No grunt at the dealership will ever lay a sponge on my car.

Good point.

zeez_Dubai · 01-23-2010, 04:56 AM

Quote:

Originally Posted by Jay Zone

DCT vs Manual performance is documented as to which has better acceleration. So it all comes down to preference.

If there is a problem that occurred your car may have thrown an error code that your dealer would see when it goes in for service.

Same happened to me in my 335i Dinan. As it turned out I hit a shift paddle on the steering and didn't know it which put me in manual mode and the car bounced against the rev limiter and stayed there. Maybe that is what happened.

Odds are you don't have a problem but take it in and see if there are any error codes.

If everything is OK you get a free wash anyway.

JZ

wow my thread got hijacked bigtime lol. anyways the problem didnt happen again everything is ok now..

but damn the z4 is a head turner, smiles here and there. lol
not good if your married :P

01-21-2010, 02:06 AM	#1
zeez_Dubai Private 13 Rep 86 Posts Drives: Orion Silver Bmw Z4 35i Join Date: Dec 2009 Location: Dubai iTrader: (0)	DCT gearbox stuck at second gear!! Hello, yesterday i was racing the old M5, the 440hp i had the setup sport + and gear in manual. The gear was in 2nd and when it reached close to redline i felt that it got stuck on something and it didnt change to 3rd. I had to slow down as the gear didnt want to change automatically, i returned the car in D and normal mode and everything went back smooth. I raced him again from 40kmh and i was ahead :P but am not sure what happened there.
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01-21-2010, 09:28 AM	#2
BlueZ4AZ Go SU 33 Rep 902 Posts Drives: 2009 Z4 sDrive35i Join Date: Jul 2009 Location: Chandler, AZ iTrader: (0)	Were you in launch control? If so, then it should have shifted.
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01-21-2010, 03:16 PM	#3
Micky Dee Second Lieutenant 11 Rep 247 Posts Drives: BMW sdrive 3.0i Join Date: Nov 2006 Location: Lincolnshire iTrader: (0) Garage List 2009 Z4 sDrive 3.0i [4.00] 2008 BMW 320d M Sport [0.00] 2006 335i [0.00] 2005 525d M Sport [0.00]	You can't beat a good old manual transmission! I believe some of these new double clutch systems can get confused/cause problems. Have it checked out by the dealer if it happens again.
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01-21-2010, 04:00 PM	#6
Jay Zone Private First Class 11 Rep 162 Posts Drives: 2010 Z4 35i & 2010 M3 Join Date: Sep 2009 Location: Virginia iTrader: (0)	DCT vs Manual performance is documented as to which has better acceleration. So it all comes down to preference. If there is a problem that occurred your car may have thrown an error code that your dealer would see when it goes in for service. Same happened to me in my 335i Dinan. As it turned out I hit a shift paddle on the steering and didn't know it which put me in manual mode and the car bounced against the rev limiter and stayed there. Maybe that is what happened. Odds are you don't have a problem but take it in and see if there are any error codes. If everything is OK you get a free wash anyway. JZ
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