clutch slip

[AA121]

Hi,

New to the register and wondered if anyone can offer some advice on the following;

I have had my car around six months now but recently when changing up the gearbox it feels as though the clutch is slipping. Not sure if it just my imagination but it seems as though it is getting worse especially under any hard-ish acceleration.

Presume this means I need a new clutch!!! but thought I would ask if there is any other possible causes before taking it into a garage.

Whilst on the subject of garages...I live near ML but are they still the place to take an M car to for things like clutches?????

Cheers,

Tim

[shimmy]

my clutch was changed after 45k miles, same symptoms.

My gut feel is if you get the clutch retaught early on it will put off the slip but no evidence yet to that effect.

Some guys just drive it hard on S6 and it goes away, but all in all if you leave it slipping too long it will ruin the clutch it seems

[Matt_csl]

I've got the same symptoms, very jerky setting off, clutch slurring on changes even with traction control off and in S6. Driving me mad.

I’ve read it could be the SMG software not compensating for clutch wear and hence searching for the biting point, going to give BMW a call tomorrow to book it in. They may be able to re-calibrate the biting point ???

Thank god for warranty. (I hope)

[pinkpanther008]

info

Let us know how you get on Matt, im sure well all be interested in the result of investigation?

[Droop Snoop]

Had the same problem, car went to Sytner Wycombe last week and they reset clutch bite point, sorted. Hope same works for others.

[AA121]

Had the same problem, car went to Sytner Wycombe last week and they reset clutch bite point, sorted. Hope same works for others.

Thanks for all the replies.....guess I will be booking it in to Munich Legends to see if they can reset the biting point.....fingers crossed!

[karbonkid]

Thanks for all the replies.....guess I will be booking it in to Munich Legends to see if they can reset the biting point.....fingers crossed!

PM'd

[Nords]

Stick it in S6 and use hard acceleration. Don't lift on the change, bang it through and see if it is better after that.

Lifting on the change will make it seem like it is slipping, however it may need the most drastic action mentioned above...

[AA121]

Stick it in S6 and use hard acceleration. Don't lift on the change, bang it through and see if it is better after that.

Lifting on the change will make it seem like it is slipping, however it may need the most drastic action mentioned above...

Thanks for that..........how long do you think it will need to be driven like that before it drives better?
Perhaps I am driving it a little too sympathetically it's just that it seems to change a lot smoother if I lift when selecting another gear!?

[SpineOnABap]

A few months ago mine went in for an oil service. Went in slurring like they do, came out sharp as nails with not a hint of slur. I asked them if they'd done a software upgrade or perhaps a re-teach and they said "no... all we do is clear the error logs". Within a few weeks it was back to it's usual self. I may pop in and get them to do 'whatever they did' again just to see if it actually does make a difference - that would be a revelation!

[shane@mbtech]

A few months ago mine went in for an oil service. Went in slurring like they do, came out sharp as nails with not a hint of slur. I asked them if they'd done a software upgrade or perhaps a re-teach and they said "no... all we do is clear the error logs". Within a few weeks it was back to it's usual self. I may pop in and get them to do 'whatever they did' again just to see if it actually does make a difference - that would be a revelation!

You mean get them to road test it and screw the balls out of it in s6 with traction off again.

Thats probably why it felt different.:whistle:

[Matt_csl]

Update...........I've had the clutch biting point re-calibrated after finally convincing BMW it could be done.............no better still slurring, bugger.

I'm going to take the car for a proper drive in S5 and see if it helps, the weather and traffic around here aren't helping though. Other than that its get BMW to crack open the box and check the clutch, hoping its something under warranty, if not I'll have to pay for a new one.

Oh yes, BMW tried to charge me 4 hours labour for resetting the clutch as they said it wasn't covered under warranty, £110 per hour ! They eventually charged it all to training and I didn't have to pay.

[NZ_M3]

That's ridiculous ... the clutch curve reinitialisation doesn't take 4 hours to do .. more like half an hour.

To reteach the whole gear selection process and clutch curve however can take quite a while - I can't remember how long now, if memory serves mine took about 4 hours to do.

[Mark CSL]

Take a look here on the members thred :thumbs:

http://www.cslregister.com/forum/showthread.php?p=36682#post36682

[SpineOnABap]

You mean get them to road test it and screw the balls out of it in s6 with traction off again.

Thats probably why it felt different.:whistle:

Haha!

That's the thing, it wasn't driven by them at all ... so whatever was done in the workshop sorted it. Must find out as it's been bugging me (and may help others of course).