DCT Clutch Problems - Page 3 - BMW M5 Forum and M6 Forums
F10 M5 Discussion 2010- Discussion about the next upcoming generation M5 based on the next generation 5-series, the F10.

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post #21 of 54 Old 21st June 2016, 11:51 PM
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post #22 of 54 Old 22nd June 2016, 12:15 AM
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Originally Posted by Kelster View Post
Thanks, Sergio.
...I was going to buy the F10 after it came off lease but not now.
Have they put you off the marque completely or just the prospect of keeping this car?

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post #23 of 54 Old 22nd June 2016, 04:12 AM Thread Starter
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Originally Posted by yellowgixxer View Post
Have they put you off the marque completely or just the prospect of keeping this car?
Still love BMWs but if they won't fix this F10 under warranty what hope is there in the future? Probably more a problem with this particular dealership that is owned by BMW of North America.
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post #24 of 54 Old 23rd June 2016, 09:11 PM
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Still love BMWs but if they won't fix this F10 under warranty what hope is there in the future? Probably more a problem with this particular dealership that is owned by BMW of North America.
Never got the warm & fuzzies from Manhattan, but that was my experience...I'm sure that people think they are the best...
Yours is a very disturbing story because you would like to think that a Factory Store will more than willing to correct this type of issue...
I've left the BMW ranks....kept my F80 for almost 2 years..while it is faster than my E92 and did handle better..it just did not feel right for me...the steering was numb/sterile....the interior styling was nice..and the ride was fine...didn't care for the shifter too much...again just my personal experience with mine...and I have been driving M3' since my first E30 in 1989....
when my new ride arrives at the end of September you should take it for a spin...I'm thinking the spirit of the E39 M5 in this new one!
Best of Luck Ray

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post #25 of 54 Old 2nd July 2016, 01:37 AM Thread Starter
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Just for laughs I've attached the latest BMW of Manhattan's invoice for work they did on my DCT clutch problem. It's clear to me that they have dumbed down the DCT software because in their estimation engine braking capability is unimportant to the demographic of people who buy or lease an F10 M5. This behavior is the new "Normal." FWIW they seemed obsessed with trying to put the blame squarely on Dinan. My independent tests with M-Chanics conclusively proved that the Dinantronics Stage 2 was in no way part of this problem.
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File Type: pdf F10 Invoice.pdf (1.25 MB, 45 views)
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post #26 of 54 Old 2nd July 2016, 02:21 AM
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Wow Ray....
well at the end of the day fortunately it is a lease! and back it will go!
then you can get another BMW from Manhattan NOT!

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post #27 of 54 Old 2nd July 2016, 10:52 AM
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Crikey.

While it's nice to see that the technician can at least spell and string together a sentence... the level of denial is fantastic. I thought "They all do that, sir" had gone by the wayside. Clearly I was mistaken.

As an aside, there's an awful lot of personal information on those scans. Just sayin'.

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post #28 of 54 Old 3rd July 2016, 12:23 PM Thread Starter
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Originally Posted by yellowgixxer View Post
Crikey.

While it's nice to see that the technician can at least spell and string together a sentence... the level of denial is fantastic. I thought "They all do that, sir" had gone by the wayside. Clearly I was mistaken.
I'm convinced BMW deliberately modified the DCT software to lessen the possibility of damage. Didn't they do something like this to the E60's SMG?

It probably happened during an earlier service visit and I didn't catch it right away because you only see it at highway speeds. After two futile service visits to try and get BMW of Manhattan to fix the problem (they declared it 'fixed' on both visits), I took it my Indy George Boutsikos and we saw what was happening. The dual clutches were releasing when they shouldn't, both on manual downshifting and also during steady state highway speeds.

It's totally destroyed the M driving experience for me. Maybe BMWNA believes I should be driving a 7 series. I'd love to be able to identify the original software that came with my F10 - it was perfect.
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post #29 of 54 Old 3rd July 2016, 01:57 PM
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When the clutches 'release' as you say they do, can you freely rev the engine yourself, as if you'd depressed the clutch pedal on a manual car and hit the gas pedal? You say the revs stay high, but I'm still not 100% sure I get the issue. There is precious little engine braking with these cars anyway so I'd like to understand the actual fault you experience a little better.
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post #30 of 54 Old 3rd July 2016, 05:17 PM Thread Starter
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Quote:
Originally Posted by 100%Cocoa View Post
When the clutches 'release' as you say they do, can you freely rev the engine yourself, as if you'd depressed the clutch pedal on a manual car and hit the gas pedal? You say the revs stay high, but I'm still not 100% sure I get the issue. There is precious little engine braking with these cars anyway so I'd like to understand the actual fault you experience a little better.
In answer to your first question, no. The following is a detailed description of what is happening and confirmed by Rheingold BMW diagnostic software during 3 hours of road testing. I should reiterate that this is a new phenomena which started occurring last April.

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When manually downshifting at highway speeds (>60 mph) the F10 rev matches and engine braking begins and then inexplicably the clutches disengage. The net result is that the F10 coasts and the revs stay elevated. Application of throttle is required to re-engage clutches. This phenomena will also occur occasionally while cruising at higher rpms. BMW of Manhattan has finally conceded that the F10 hasn't been fixed and will enter the problem in PUMA.
--Ray
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