M-DCT Lag issue. Owners please post your car info here

[jaihind]

PY42141

[aus]

Originally Posted by footie

Here is where you and I differ greatly swamp. You seem to be convinced that the almighty M-Division couldn't possibly release something with problems just to say they were first with a DCT that wasn't transverse, where as I am convinced that they have exactly done this very thing feeling that they were close enough to having a fix that this could have been sorted shortly after those early examples were sent to their owners. But this hasn't proven to be the case and now after almost a year there is a shit load of customers that are very unhappy with how this issue has been dealt with, and rightly so.

Only 17 people have filed a complaint, so it doesn't sound like a shit load to NHTSA.
I guess they're waiting for some injuries or death to occur before they do something, or MORE PEOPLE to complain about it.

[alito]

has anyone actually asked their dealer for updates?

[BME93]

Originally Posted by alito

has anyone actually asked their dealer for updates?

I asked mine at my 1200 service last week (Houston TX). Mentioned I had this issue, and that others seemed to also. Sheepish look and the response was "you'll have to bring it in and have a tech look at it".

[darkalley]

I got a "Transmission Malfunction" message on my car yesterday so i shut the car off and it did not re-appear. I brought it to the dealer this morning and after hooking it up to the computer they told me I will need the new software update. Now I had the major software update a few months back. They made it seem like this was another major update. Anyone know?

[alito]

Originally Posted by darkalley

I got a "Transmission Malfunction" message on my car yesterday so i shut the car off and it did not re-appear. I brought it to the dealer this morning and after hooking it up to the computer they told me I will need the new software update. Now I had the major software update a few months back. They made it seem like this was another major update. Anyone know?

ask him what software number he is installing. He should know and tell you.

I have tested every possible dombination of trasmission and speed and setting. TO ME, the least affected setting is D-5 with power off. Trasmission is incredibly jerky and sensitive but at least it does not seem to pause for seconds at a U-turn as much.

[rouxeny]

I have an early 08 and also suffer from the slow speed lag that has been mentioned. The specific times that it is very apparent are when I'm going slow in second gear in one of the "D" settings. Slowing down for speed bumps or doing a California roll right turn are two good examples. After going back on the throttle, there's a fairly long period of time before the engine seems to respond, probably 1-1.5 seconds. During this time, I'm usually putting a bit more pressure on the gas, so that when the engine does kick in, I surge ahead. My girlfriend thinks I can't drive.

The only partial solutions to this I've found have been to

1) Slow down to the point that the transmission shifts into 1st
2) Shift to S modes for these types of driving
3) Set "POWER" button to off, I think that because the throttle response is lightened, even though I still put a little extra pressure on the pedal while I'm waiting, the engine doesn't surge as much after

On a semi-related note, I also have found that the transmission is slow to engage when transitioning from reverse to 1st gear. Specifically, when backing out of a parking spot, then moving back forward, the car continues to roll back despite being in 1st gear and on the gas. This has only been a problem because I worry that I'll roll too far back and hit something behind me before the engine catches up. I suppose the easy solution to this is to stop the car entirely before shifting into 1st, but having driven a manual for years, that's not natural.

I hope the lag issue gets fixed, but honestly, I'm not that hopeful. I am not sure that BMW ever fixed the "surge" that was very apparent with the SMG on the M5.

[Radiation Joe]

Bump back to front page.

[swamp2]

Bump for update on aftermarket DCT software...

[southlight]

Originally Posted by Radiation Joe

Bump back to front page.

Originally Posted by swamp2

Bump for update on aftermarket DCT software...

Got it, so I stuck this thread.



Best regards,
south

[Race_Doc11]

I'm sick tired of the lag and BMW ..I almost got in a bad accident because of what BMW consider "normal" I'm to writing the company to hold them responsible for anything that happen to me because of this piece of shit car...

[MERGANSERS]

Putting car in dealer shop this week. 2008 e93 - P330975. Even the housekeeper, who drives it only in automatic, complains.

[BME93]

VIN# P331892.

I've had 2 near misses with this issue. 1 turning left. I always make sure I'm in 1st before turning left now. 2 changing lanes and turning right - car behind me had to brake.

I love everything else about this car, but as someone else mentioned, the most annoying thing is how jerky it is when the power eventually kicks in - stark contrast to the unbelievably smooth changes the M-DCT usually provides

[Race_Doc11]

Imagine on the highway the guy in front of you slammed on his brake and your only way out is to brake hard and change lanes then you are powerless in front of coming traffic...that's what happened to me...luckily the comming car barked when he saw me not moving as I should...it is a matter of time when a fatality happened and a hungry lawyer goes for it ...if I was in a jury and I hear such thing I will hold the manufacture responsible

..

Originally Posted by BME93

VIN# P331892.

I've had 2 near misses with this issue. 1 turning left. I always make sure I'm in 1st before turning left now. 2 changing lanes and turning right - car behind me had to brake.

I love everything else about this car, but as someone else mentioned, the most annoying thing is how jerky it is when the power eventually kicks in - stark contrast to the unbelievably smooth changes the M-DCT usually provides

[marklim]

Just wondering if anyone would take it to the next step like this lady.

http://www.iphonestalk.com/027-3g-ip...dropped-calls/

Also, i've experienced another lag with my DCT 335i. Whenever i'm in 4th,5th or 6th gear, the moment i go WOT, the car drops to a lower gear and i can hear the engine working for a few seconds or milliseconds before the car actually shoots forward.

There was once where it got so bad that when i was trying to switch to another lane, i went WOT, by the time the car accelerated forward, the other lane's vehicle was already too close, i had no choice but to release the accelerator. What i'm trying to say is that the lag is THAT bad until i even had the time to remove my feet from the accelerator and the car still hadn't moved.

Just wondering if this is the same thing that you guys are discussing about ?

[valeram]

Originally Posted by racedoc11

Imagine on the highway the guy in front of you slammed on his brake and your only way out is to brake hard and change lanes then you are powerless in front of coming traffic...that's what happened to me...luckily the comming car barked when he saw me not moving as I should...it is a matter of time when a fatality happened and a hungry lawyer goes for it ...if I was in a jury and I hear such thing I will hold the manufacture responsible

..

I think, that is the reason why BMW AG will not confirm or acknowledge the stalling problem of the DCT in low gear/speed. If an unforseen accident happen that was attributed to the DCT stalling problem, they can say that, that is the first time they heard about this issue and they will look at it.

[miltiadesone]

Anyone know when they are coming out with this new software update? I keep getting lag at slow speeds, and missed shifts on the downshift. The car seems to skip gears alltogether. I almost redlined it by accident when it went from 3rd to 1st gear on paddle actuated downshift. It skipped 2nd gear alltogether.

[waremark]

Originally Posted by miltiadesone

Anyone know when they are coming out with this new software update? I keep getting lag at slow speeds, and missed shifts on the downshift. The car seems to skip gears alltogether. I almost redlined it by accident when it went from 3rd to 1st gear on paddle actuated downshift. It skipped 2nd gear alltogether.

I don't think it would change down to an engine damaging gear. Have you read in the manual that if you press the throttle right down and then pull the left paddle it changes to the lowest available gear? It sounds like that is what you did - no problem.

I think we have to assume that they cannot easily find a better set of settings than the ones we have now. I think they have had long enough to have had a good go at it. Just drive in a style which gives the car a second to make auto downchanges. Perhaps this is easier if you are used to an MT.

[DamirM3]

How many of the 2008 and 2009 production year models of the E92 DCT do you believe have the lag issue in lower gears ?? is it most of them ? about half of them ? or just the odd one ? Since everyone here believes its software related it would make sense that all the DCT cards have this problem. ?

[AZ-BMW]

Originally Posted by valeram

I think, that is the reason why BMW AG will not confirm or acknowledge the stalling problem of the DCT in low gear/speed. If an unforseen accident happen that was attributed to the DCT stalling problem, they can say that, that is the first time they heard about this issue and they will look at it.

It's not a "stalling" problem, but a hesitation or lag problem. The literal stalling issue was resolved with an earlier PROGMAN fix.

[Race_Doc11]

I think all of them

Originally Posted by DamirM3

How many of the 2008 and 2009 production year models of the E92 DCT do you believe have the lag issue in lower gears ?? is it most of them ? about half of them ? or just the odd one ? Since everyone here believes its software related it would make sense that all the DCT cards have this problem. ?

[Montoya]

Originally Posted by racedoc11

I think all of them

I have been driving my MDCT coupe for a month with no problems. Maybe we should be a little more scientific about this and start a data base of cars with known issues, listing the production date and the version of software if known.

Also, again to be more scientific- A very specific test to see if your car has it or not. I have read through the threads but if someone has posted a very detailed controlled test that everyone can do in a parking lot, that would be very helpful. By detailed I would like to see- MDCT in D3, drive at 35 mph steady speed, car shifts to D5, lift accelerator, brake slowly to 10 mph etc. etc.

This can than be used for all MDCT members to verify if the problem exists in their car even though their driving habits makes the problem transparent to them, or if the problem only exists in a few vehicles.

Just trying to be helpful. When we had problems with the E46 M3 engine failures, it was Jason with his database of failures that actually made BMW do something. I think we need to do that with this as well.

Just my .02 cents.