M5 F10 dct problems

M5 F10 dct problems

Author
Discussion

Plumo27

Original Poster:

12 posts

101 months

Saturday 26th April 2014
quotequote all
Hello All, I'm new to the gassing station and looking for some help!
Bought an M5 f10 couple of weeks ago, 62 plate with 5k miles.
I'd like to know if anyone else has had similar problems to me with the dct transmission.
The problem occurs at low speeds 30mph ish, in drive auto mode, when slightly decelerating, ie just slightly lifting off the throttle before you brake. (Ie going down a slight hill before braking) The revs start to increase slightly, say from 1500 to 2000 rpm but feels like the clutch is slipping and then at about the 2000rpm mark its like the clutch bites and jerks etc, the car will keep doing this until you either brake or accelerate. The gear number on the dash doesn't show a change to a lower gear. It seems to be worse in wake up mode "efficiency" but I also get it in "sport". The cars going in to bmw on Monday but other people's simlar experiences would be helpful. By the way other than this I really like the car!
Cheers

Schermerhorn

4,277 posts

170 months

Saturday 26th April 2014
quotequote all
Needs a clutch software reset.

Drive in a straight line at 40mph, pull both paddles back and then release. This resets them back to factory settings. That should eliminate the problem.

Plumo27

Original Poster:

12 posts

101 months

Saturday 26th April 2014
quotequote all
Thanks for your response, I'll give it a go and let you know. Cheers

w5pwr

450 posts

171 months

Saturday 26th April 2014
quotequote all
Schermerhorn said:
Needs a clutch software reset.

Drive in a straight line at 40mph, pull both paddles back and then release. This resets them back to factory settings. That should eliminate the problem.
I know that worked on the E60 M5, but not sure it does on the F10?

I have tried it and didn't do anything.....

SNEL

65 posts

211 months

Saturday 26th April 2014
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Shame you have this problem. I think the DCT box is one of the best features of the car with seamless changes in auto

Plumo27

Original Poster:

12 posts

101 months

Saturday 26th April 2014
quotequote all
SNEL said:
Shame you have this problem. I think the DCT box is one of the best features of the car with seamless changes in auto
Thanks for the reply. I look forward to it being sorted as at low speeds the dct is definatley not seamless. If I accelerate or brake more purposely / aggressively then the box performs well, up and down shifting more like how you describe, but its disappointing when I'm driving slowly. Cheers

skeeterm5

2,615 posts

169 months

Saturday 26th April 2014
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Given it is almost brand new why not simply take it back to BMW to sort?

S

Plumo27

Original Poster:

12 posts

101 months

Saturday 26th April 2014
quotequote all
It's going back to bmw on Monday, but in my experience depending on how good the garage/technician is sometimes you get fobbed off and having knowledge of other people's similar experiences is an advantage. I was trying to establish if I was experiencing a common fault.

Blue62

6,984 posts

133 months

Saturday 26th April 2014
quotequote all
skeeterm5 said:
Given it is almost brand new why not simply take it back to BMW to sort?

S
Well said, I very much doubt that this would've occurred to the OP, excellent intervention.

Wills2

19,990 posts

156 months

Saturday 26th April 2014
quotequote all
Get them to check which software version it's running and ask if there is an updated version, I've said before but my DCT has a mind of its own sometimes.

I get the clutch slip then biting and sometimes nothing at all, it generally does what it wants sometimes acts like a rabid pitbull (good) others times like an over weight lab (bad)

Mines due a service so will ask them to look at the software version as well.


skeeterm5

2,615 posts

169 months

Saturday 26th April 2014
quotequote all
Blue62 said:
Well said, I very much doubt that this would've occurred to the OP, excellent intervention.
Excellent retort - Thanks smile

S

skeeterm5

2,615 posts

169 months

Saturday 26th April 2014
quotequote all
Plumo27 said:
It's going back to bmw on Monday, but in my experience depending on how good the garage/technician is sometimes you get fobbed off and having knowledge of other people's similar experiences is an advantage. I was trying to establish if I was experiencing a common fault.
Fair point.

In my experience I always asked to take a "master technician" out in the car to demonstrate the issue and make sure they understood it. This way I minimised the risk of them misunderstanding my problem.

S

Martin_M

2,068 posts

208 months

Saturday 26th April 2014
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Blue62 said:
Well said, I very much doubt that this would've occurred to the OP, excellent intervention.
Dear oh dear.

Blue62

6,984 posts

133 months

Sunday 27th April 2014
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Martin_M said:
Dear oh dear.
I think you take this place too seriously.

Palmball

1,225 posts

155 months

Sunday 27th April 2014
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My DCT 'box is also far from perfect. Does anyone else in an M5/6 notice that if you're in auto mode and apply throttle just as it changes gear, theres considerable lag before it gives you drive?

So, whilst the gearbox changes instantly if you're on the throttle, if you happen to apply throttle just as it changes gear you get a good couple of seconds with no apparent response. Obviously this doesn't happen in manual mode as you'd never purposefully change gear just at the point you apply throttle.

My car has done 9k miles and I never noticed it until about 3k miles ago, and it seems to be getting worse. Hopefully it's not typical and a software reset/upgrade will sort it.

jcolley

183 posts

107 months

Monday 28th April 2014
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I'm not sure if the F10 has the same "slip detection" reset as the E60 using the "paddle pull", but ISTA/D has similar "teach-in" functions for the DCT as the SMG.

Likely the transmission would benefit from reperforming the four steps in ISTA:

- clutch adaptation
- gearbox adaptation
- learn-in of clutch characteristic curve
- reset torque characteristic curve

This makes all the difference in the world for the E60, no reason to believe it won't help the F10 as well.

Plumo27

Original Poster:

12 posts

101 months

Monday 28th April 2014
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The car went into BMW today. Had a phone call explaining that they couldn't find anything wrong with it. They even gave it to one of their engineers who drives an M5 F10 and he couldn't replicate what I described. Got in it to come home from work this evening and the car did it within a few minutes. To be fair to BMW they said bring the car in when it suits me and they'll send me out with an engineer for me to demonstrate the fault.

JMBMWM5

2,067 posts

179 months

Wednesday 30th April 2014
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I have covered 6850 miles so far in my LCI M5, no such problems yet.

Plumo27

Original Poster:

12 posts

101 months

Thursday 15th May 2014
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Finally got around to taking the car into BMW today to take a mechanic out with me for a demo of the problem. Was going last week but the car "fixed" itself, but only temporarily, so called in today. Fortunately the mechanic witnessed the problem and confirmed that its not normal and they are having the car in to check it out. The mechanic who came out was a decent bloke. The only dissappointing element was that if I wanted a courtesy car I'd have to wait 3 weeks! They can look at it next week if I don't want a car. I'm thinking maybe its worth waiting and having one of their courtesy cars as an incentive to get the work done more quickly as the mechanic said they may have to take the gearbox out. Don't want to be one of those cases of having the car at the garage for ages.

JMBMWM5

2,067 posts

179 months

Friday 16th May 2014
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Plumo27 said:
Finally got around to taking the car into BMW today to take a mechanic out with me for a demo of the problem. Was going last week but the car "fixed" itself, but only temporarily, so called in today. Fortunately the mechanic witnessed the problem and confirmed that its not normal and they are having the car in to check it out. The mechanic who came out was a decent bloke. The only dissappointing element was that if I wanted a courtesy car I'd have to wait 3 weeks! They can look at it next week if I don't want a car. I'm thinking maybe its worth waiting and having one of their courtesy cars as an incentive to get the work done more quickly as the mechanic said they may have to take the gearbox out. Don't want to be one of those cases of having the car at the garage for ages.
What a ste service, I get the best demo in the shop anytime when I go in.
Listers all the way for service. I would NOT go back to who your using.