The CSC and master cylinder issues has been around since '07 when Nissan started using CSCs in the transmissions. I'm surprised there hasn't been any changes, but the ZSpeed HD CSC is doing very well for me.

Just dropped my 09 to the dealer today, hope to get CSC replaced fast.

Is the ZSpeed HD CSC the only aftermarket replacement available or are there others?

Pretty sure my CSC just gave out on me tonight

Good luck even if they replace it. Joe at Zspeed illustrated their poor engineering along with Zspeed's corrections. What they did "just made sense."

Just got word back that I was getting the CSC replaced under warranty, but the strange thing is the dealer wouldn't give me a rental. He states they don't do the rental and that it would have to be covered under my extended warranty which means I have to pay the deductible. Is the rental a per dealer thing or should they have provided me a rental.

Dealer replaced the slave and master cylinder and paid for my rental! clutch feels a lot better and smoother then before.

Mine is finally going in Friday.

got mine back today -- clutch feels great.. put about 200m on it after picking it up. :D

^ :tup:

Mine is the clutch master cylinder. Part will be here in one week. Covered under EXTENDED warranty. 41k miles.

Work order states " Customer states clutch pedal fades and feels mushy when 1st applied at cold start". Inspection confirms customer concern. Mushy feel and found the fluid is full, the clutch master cylinder is by passing. Suggest replace and recheck clutch function.

Next week we will see...

That should help. IIRC, failed master would lead to failed CSC. I had a buddy with a G370 who had the CSC replaced 3 times before they realized it was the master cylinder that needed replacement.

how do I get this checked? any signs too look out for?

Can you explain how/why a failed master would cause failure of the slave? If slave is not disengaging properly, wouldn't the damage be more so trans related (syncros and what not) than CSC?

This stuff is way over my head, but the CSC kept failing in his car before they replaced the master cylinder.

Fingers crossed that by replacing the master clutch cylinder will save the CSC.

how many time does the same part have to be fix for it to be considered a lemon?

I remember seeing a revised Nissan OEM CSC, but when did they start putting them on their cars?

Bump for this, my car is in the shop right now for these same reasons. Mechanic says it's the slave cylinder. We have to order the part since we're on Guam :( and after what I've been reading in this thread, should I tell him to go ahead and order and replace the master cylinder as well while he's at it?

40k Miles 09 370z

Clutch Pedal stuck to the floor, towed to the dealer. Dealer wants 1600 to replace the clutch assembly and are checking out the slave cylinder and flywheel. I have the extended waranty.

After reading all this I wonder if my cluch assembly even needs replacement and I just need the Master/slave cylinder replaced. ( I don't know much about cars)

Unless it's had a lot of hard driving the clutch disc itself is likely fine, however since you have to drop the transmission to get to the CSC it's an opportune time to consider replacement at a reduced labor rate since the warranty will pay for the CSC replacement and the labor to drop/install the transmission. The price he's given you so far certainly isn't discounted :)

which dealer did you take it to?

this was one of my fears when i traded in 2011 Z 7sp auto for a 2012 6sd man. I've heard many horror stories about the clutch and csc failures. Great info from all. Planning to install a ACT clutch from stillen.

Loss of clutch hydraulic pressure occurred on my way home from vacation. Eastbound on I-40, east of OKC, the pedal went all the way to the floor. Eventually got of the road and was somewhat able to pump up the clutch using my hand, since the pedal wouldn't return on its own. No signs of fluid loss, reservoir full. Limped on home, periodically having to take the car out of gear to pump up the clutch again. Got the car to the dealer with 35.5 k miles on the odo.I suggested they try bleeding the system first, but they went ahead and ordered the CSC, master cylinder, and tube; they must already have a service bulletin or something.

All mine needed was the clutch master cylinder (cmc). 1k + mi on cmc and no worries. Wonder why dealers are replacing the csc if it might just be the cmc. Warranty $$ maybe....unless as someone previously stated the clutch is being thrashed.

All good here, but will keep a foot out for csc.

Update: I recently posted in here believing I had this issue but I just pumped in and replaced my clutch fluid and haven't had one single issue since then.

Before changing fluids the pedal was squishy after 30min of highway 80mph driving, just cruising. Now the pedal remains consistent no matter how hard I push the car :tup:

Some of you lurkers may want to swap your clutch fluids BEFORE you have these issues. I had the same symptoms and perhaps I fixed the issue before it became a CSC failure. .....I hope.

^ I agree, although my clutch fluid was still the initial fill at factory 2009 with 42k miles. I imagine the dealer would have performed this IF they diagnosed it was just a fluid swap.

Best to get them to replace the cmc while it's still under warranty...imo

I need to drop off my car too, pedal dropped a few times to the floor. Replaced fluid and worked better but now I am gettin 2nd and 5th gear grind...

Last Thursday I was on my way home from knotts when I went to downshift for traffic and the pedal went to the floor. Dropped it off at the dealer today. What annoys me the most is that I'm 19 and they guy didn't seem to take me seriously. Hopefully they figure out whats wrong. I'm also worried if it'll be covered under warranty:shakes head:

After having the CMC and CSC replaced under warranty, the clutch feels better than when the car was new!

Can someone post up their invoice showing what was replaced etc..... under warranty?
or email it to me?

anyone? I just took out my recaro's etc to make the car look as stock as possible... trying to get the exact things replaced etc... so dealer doesnt give me bs....

well apparently everyone seems to be having the same problem. I was driving my car (normally) and out of nowhere my clutch peddle drops to the floor. Less than 8k miles. No mods, just air filters, don't drive it that hard either. Taking it to the dealership tomorrow if possible. Just got the basic warranty. Curious to see what will happen at the dealership. Had a 07 350 before this and my transmission was replaced under similar conditions and never had another problem. Read that a lot of people have had the same problem with the 370 and it never seems to go away. New to the forum, just saying hi, will post results as soon as I know more.

Thanks, -Steve

So I got my car back from the dealer about a week ago. It was confirmed that the CSC did indeed fail but they claim only one other car has been brought to them with this problem and swear that it's rare. They went ahead and replaced the master cylinder, csc and the clutch hose assembly. So far the car is running fine. Noticed that the clutch is a little softer but all is good. We'll see how long it takes before it fails again...

35k+ miles and my 09 Z and my clutch finally decided to take a crap on me today. Not all surprised though since I do run it hard. Figured it was time upgrade my clutch anyway. Just sucks to see all that money leave my acct.

12/15/12

My Car: 2011 370Z
Miles: 16,200.

My Clutch began to stick on the freeway. Then Got worse. Barely made it back home and now it's completely stuck to the floor. Know this should be under warranty, but since I have my own shop I would rather work on it myself. Plus I may want to replace my clutch since I most likely will be dropping the Transmission. I'll take photos.

(1 in 1 million to refuse warranty work) lol

This is interesting, not sure if it's related or not. Or it might be the cause of my recently failed clutch master cylinder. The clutch pedal (the whole pedal assembly) was replaced due to a blown seal of the compressor cartridge shock thingy. The one right behind the pedal. It was replaced soon after I had the new clutch master cylinder replaced. An annoying quacking noise from the pedal and it's not the normal air release noise from a good functioning part, this was a louder duck sound.

This may have failed first and then contributed to the failed clutch master cylinder. Making a note for any others with the same scenario.

Just an update as I don't think I came back to this thread since my post in September

Dealer replaced my MSC under warranty. Clutch is like butter now

I should have bought an automatic! Crap!

Nah be happy with what you got. Get the upgraded slave cylinder and you'll be fine.

Has anyone here replaced the CSC with the heavy-duty one from Zspeed, and installed an OEM clutch pack ( pressure plate, clutch disk, and flywheel )?

I know the Zspeed CSC is really meant to push a heavy clutch configuration, but Im trying to figure out the most streetable clutch that is closest to OEM, but if I have to I may go oem. I just dont want that crappy CSC, I want the Zspeed one.