Out of curiosity, what happened when it failed? Did it come back after cooling down or no?

What dealership did you go to? Did they find internal/external leaking?
Is that what prompted the CSC & CMC to be replaced?

In my case, they only drained the system and put in the GTR brake fluid.
Their inspection couldn't find any internal or external leakage.

I still wish they would've replaced the CSC & CMC.
It's working fine just now, but I wonder for how long?
I'm still under the CPO warranty for another 70K or until 2017.

For me, pedal went to the floor, changed fluids, then pedal was decent but never was back to normal pedal feel. Then I had a grind downshifting from 6th to 5th, then 3rd to 2nd, replace transmission fluid didnt do anything. Took it to dealer, they replaced csc and cmc, pedal was perfect again, then about 6-8 months later, started to get the same grind, not wasting my time at dealer and forked over for the Zspeed csc and oem cmc. Well worth the upgrade.

Hi all,

I've just encountered the sticky clutch problem today. A bit of car background, 2010 RHD 6MT Sport bought in Sept 2013 with less than 2000km on the clock. First serviced at the dealer was around 2012 with 1700+km on the clock. Has never done any spirited driving in the past until it came to me.

Changed transmission fluid and rear diff fluid cos it was all dark brown in color. It's been a weekend car till now. It's got 12513km on the clock and its mean't to be driven like a Sports car should be. FAST but safe.

Today was a hot day and it was driven for 25 min at an average speed of 180 km/h. Oil temp reading was around 110 mark. At 5 min from destination clutch pedal was stuck halfway. After, I had cooled down the car because was in a meeting for 2 hrs came and started it back, clutch was still halfway down. Took it down to my local garage, and had the change tranny fluid change, it went back up on its own accord.

I called the dealer to ask the price of the GTR clutch fluid and was informed that its US$191 per litre. WTF. So any ideas are really appreciated in terms of other fluids to replace the GTR one. Thank you

Motul RBF600 should work just fine. Are you sure they didn't quote you for the GTR transmission fluid by mistake? You want their brake fluid, not transmission fluid.

Well, I did ask specifically that if, I wanted to replace the clutch fluid how much would it cost. Also, cos I kept getting passed around and probably got lost in translation with them.

Thank you

It really isn't that hard to do yourself if you have a jack, jack stands and a friend. Just make sure that you don't get air into the MC because it will never come out.

iirc, gtr brake fluid at the dealership runs $45 per bottle. I do remember that you can purchase over 2 quarts of RBF 600 for the price of one quart of the gtr brake fluid per dealership price. :icon14:

Mine did the clutch pedal to the floor at 4100 miles and I limped into a parking lot. Had the car towed to the dealer that I bought the car from and they have flushed the clutch fluid and replaced with GTR brake fluid. I'll see how it drives and we'll see if that fixes the issue. They made me aware of the service bulletin regarding the issue.

Complaint filed. Thx for the link.

This might be the issue with my clutch!

On Sunday, after an hour of highway driving, at ~60MPH I hit both the clutch and brake pedals hard to avoid a BMW that suddenly wanted to be where I was. The next time I needed the clutch (a few seconds later), the pedal went to the floor and stuck there. Luckily I was able to pull to the shoulder and get it unstuck, but ever since it just hasn't felt right. Today I decided to get it checked out: I have a service appointment for Thursday morning (I need the car tomorrow), but in the meantime I thought I'd come here in case anyone had an idea of what might have happened.

I don't think my car is under warranty anymore: it's a 40th, so it's four years old (though it only has 20,000 miles on it). I didn't read all 27 pages of this thread, so I don't know if cost has been discussed, but I'm worried about it being an expensive fix. Mostly I'm worried about this becoming a recurring problem. Meh.

Push your dealer to cover it under the 5yr/60K powertrain warranty. Some dealers will even though NNA has told one member on here that the clutch is not part of the powertrain warranty. My argument would be wearable clutch parts are not covered, but the CSC is not a wearable part. Also, if the CSC fails, the CMC need replacing, too.

Unfortunately, if you do get it replaced under warranty, it is the same crappy, plastic OEM pos that they put in there. So you might be looking at a recurring problem.

There are two solid aftermarket options that are available to you. I definitely recommend one of these two if you have to pay out of pocket. They will solve the problem for you. Both companies are forum sponsors that you can PM on the forum with any questions, too.

ZSpeed Heavy Duty CSC

Z1 Motorsports CSC Elimination Kit

Does anyone know what model year Z's are known to have this potential problem???

2009-2014 for sure. Any model that used a slave with plastic internals.

As far as I know the OEM design of the CSC has not changed. So 2009-current.

Thank you, JARblue! :tiphat: