Intermitant clutch fault - 2015 Mini Cooper Forum
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post #1 of 326 Old 01-06-2015, 07:31 PM Thread Starter
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Intermitant clutch fault

I have driven my F56 11 months with 7000 miles now on the clock with no complaints, the last two months has anyone had this fault.
Driving up to a line of stationery traffic unable to release the car out of gear.
Then finding the clutch pedel already close the the floor, with little travel downwards. The first time I had this experince I just had to knock it out of
gear to bring the car to a halt, after a few times of this I returned it to the Dealers Sytner Mini Cardiff they could not find the fault but changed they
gearbox anyway.

Having got the car back just before christmas the same fault happens again
but this time I have found an Immediate remedy as soon as I relies there is a problem
using your foot to raise the clutch pedel, and the clutch returns to normal like
nothing has happened.

What part gives the clutch pedel its spring back resistence ?

The car is going back in this week
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post #2 of 326 Old 01-06-2015, 08:28 PM
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Originally Posted by GarryThomas View Post
I have driven my F56 11 months with 7000 miles now on the clock with no complaints, the last two months has anyone had this fault.
Driving up to a line of stationery traffic unable to release the car out of gear.
Then finding the clutch pedel already close the the floor, with little travel downwards. The first time I had this experince I just had to knock it out of
gear to bring the car to a halt, after a few times of this I returned it to the Dealers Sytner Mini Cardiff they could not find the fault but changed they
gearbox anyway.

Having got the car back just before christmas the same fault happens again
but this time I have found an Immediate remedy as soon as I relies there is a problem
using your foot to raise the clutch pedel, and the clutch returns to normal like
nothing has happened.

What part gives the clutch pedel its spring back resistence ?

The car is going back in this week
A hydraulic clutch has a master cylinder which contains hydraulic fluid. When you press down on the pedal, you move a piston in the master cylinder, forcing hydraulic fluid through a line to the slave cylinder, which presses against the mechanism that moves the clutch off the pressure plate. The clutch has a powerful spring which will return the clutch to the pressure plate as you let up on the pedal, pushing the pedal back at the same time as the slave empties and the master fills up again.

It's a pretty simple mechanism, perfected decades ago. About the only thing that goes wrong is 1) air in the lines (hydraulic fluid is not compressible, but air is, so you get a spongy and weak clutch), a failed master or slave cylinder (instead of a tight piston, you have leaks and reduced force, or the thing barely works), or 3) some mechanical issue with the clutch itself.

My Random Internet Yahoo guess is that there is something wrong with the clutch itself. Perhaps the connection to the slave cylinder is loose, broken, or otherwise compromised. That would explain why you can't shift out of gear (the slave cylinder can't move the clutch off the pressure plate completely or at all).

Interesting. Please keep us updated.
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post #3 of 326 Old 01-07-2015, 02:00 AM
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Yes we could do with knowing .is our mini clutch cAble or hydraulic?

Surprisingly delighted to have moved to an f54((with a r59 in the fold for fun!)
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post #4 of 326 Old 01-07-2015, 08:10 AM
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Yes we could do with knowing .is our mini clutch cAble or hydraulic?
It's Hydraulic.
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post #5 of 326 Old 01-07-2015, 09:03 AM
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As you suggest Garry it sounds like the return spring on the pedal has become disconnected, if that is how, in Minis, he pedal goes back to its at rest position.

There is usually a spring in the master cylinder but it could not get displaced to cause this problem. A hydraulic seal in the cylinder could be distorted and be preventing the actuating piston from retracting but this would be very unusual having been OK for these thousands of miles.

It is an odd problem, and I am interested in hearing what the cause is!
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post #6 of 326 Old 01-07-2015, 12:14 PM
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Me too.

Surprisingly delighted to have moved to an f54((with a r59 in the fold for fun!)
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post #7 of 326 Old 01-07-2015, 01:46 PM
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Hi Garry, so glad you mentioned this.
I have been having the same problem.

Went on holiday with the car for a week about 6 weeks ago. noticed on about 3 or 4 occasions that the clutch pedal felt strange. As you mentioned it was not returning fully but about halfway.
No trouble in changing gear and it soon sorted itself out. One time I raised the pedal with my foot which sorted it.
I even stopped in a car park one day soon after another reoccurrence and operated the clutch pedal several times both with foot and by hand, but all seemed ok.

Since then it has happened on the odd occasion, and seems to me to strangely occur after turning the steering wheel to the right, such as on a roundabout or pulling out of a junction!!!!?

Am now monitoring the situation more closely to mentally note the scenario if it happens again.

The thing is you can take a car like this to the dealers and they will have it for a couple of days maybe without the fault showing itself.

When it happened I was more concerned with the potential of possible clutch slip, but it seems that it is the pedal mechanism perhaps as have not noticed anything untoward.

I will see how it goes, but am mindful of informing the dealer so it is on record (but have not done this yet).

Let us know how this develops and I will do the same.

Only done about 3,800 miles so far in my car so far by the way.
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post #8 of 326 Old 01-07-2015, 02:55 PM
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I'm impressed that you've had the car 11 months, I didn't realise customer orders had started before March! Good luck with the issue though!
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post #9 of 326 Old 01-09-2015, 01:53 PM Thread Starter
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lawrothegreat yes you are right having had a quick look at the docs it was 21 March 2014.
BMW real oem confirms it's hydraulic. There are two cylinders one that looks like is has a rubber boot.by the pedal.
I took it into Sytner Mini today, while going to the dealers soft pedal strikes again.
Same remedy raise pedal by left foot everything returns to normal.
Sytner's mechanic had a drive of it for a few miles around the city center could not reproduce the fault, and dismiss the theory that there is air in the system.
So he is driving it home for the week or until the fault shows itself.
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post #10 of 326 Old 01-10-2015, 04:28 PM
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Hi add another car with the same problem and there is also an owner on Facebook f56 page with the same clutch problem. Mine started about six weeks ago at about 2100 miles it would just feel strange and go to the floor but still change gears this was and still is an intermittent problem. Then it started sticking halfway then springing the rest now every so often it sticks half way and you have to place your foot under it to release it not the best thing when driving. I had it in my dealer about three weeks ago and he oiled the spring but it just got worse. So now after looking at it yesterday they have contacted bmw who told him to drop the gearbox out of the car this is happening on the 21st of the month. Strange how so many of us are having this problem and we all own MCS. Has anyone had a solution to this problem yet knightmare
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