bluejae

went in to autoscope park cities location in dallas for an oil change and alignment... after all the work was done they informed me that i will probably need to get the flex disc/propeller disc replaced because it was showing signs of cracking...

i have an extended warranty but i'm not sure if this is covered. i'll be asking mercedes about this... but i was wondering if anyone else has had theirs replaced...

i'm at about 69K miles...

i appreciate autoscope letting me know of this when it was just going in for an oil change and an alignment...

bluejae

looks like it's covered under warranty.

m a x i m u s

i would think this would be covered, but i guess you never know with these dealers. thanks for finding out and posting.

AMG893

Pardon my ignorance, but what is the flex disc & where is it located?

Is it the part that connects the tail shaft to the diff?

chrisridebike8

It goes between the motor and the torque converter. Think of it as a really lightweight flywheel. It's basically there to have something for the starter to engage upon. It's not really heavy enough to be a flywheel, but it goes in the same spot as a flywheel, and it's only on auto cars.

604 C63

If you're ignorant, at least you're not alone. I had to look it up. I thought maybe it was some weird joke

bluejae

he initially told me that i may need to replace my guibo because it's showing signs of cracking... i told him to not make up stuff for me to get fixed... ... we had a laugh... and he told me it's also called a flex disc...

m a x i m u s

hmm, i thought the flex discs were what connected the drive shaft to the tranny on one end and the lsd on the other ...

capt_paul

There are two flex disks, one where the propeller shaft connects to the rear differential, and the other where it attaches to the transmission. They are about $100 for each (plus labor). The disks are made or rubber and they are designed to absorb vibrations of the drivetrain, from what I have been told. I replaced these on my 2005 C230 a number of years ago.

roadtalontsi

what you are referring to is called a flex plate.

The flex discs as mentioned take place of u-joints just more reliable, less vibration and noise.

shaun.barnard

Did you eventually have the flex discs replaced? Can anybody please help me with the part number for the flex disc?

bbirdwell

Replied in your other post.

bluejae

if i recall correctly... i took my car to the dealership since it was under extended warranty... and they said it looked fine/normal... so they did nothing...

sorry... don't have a part number

shaun.barnard

No worries thanks, got it from another helpful gentleman in a new post I started.




This is it for members wanting it in future.

lukeeb

I just had my flex disk done on my 2014 C204 C63, part number A0004111000
It is at 78500 miles and cost £165+labour.

This is what mine looked like, looks fine, but zoom in…

skullbox15

Is that why I feel some random vibration now and then? Is this something I could do myself with a lift? Seems like they just mate together with the bolts/washers/nuts?

3rdEye

Mine was replaced under extended warranty at MB Dealer for 1,200 CAD at 104k km

Was also told mine had cracks during a service.

WolfpackC63

FYI surface cracks don't mean it needs to be replaced.

crehop

Can someone show a picture of what type of cracking we are talking about? I see surface cracks on mine but they look very superficial just curious what a bad one looks like.

DRBC43AMG

Google is your friend....
This one looks in pretty bad shape and if it would break, can't imagine the damage underneath with a flaying shaft

lukeeb

When you stretch my old flex disc, the cracks open up and run fairly deep. Flex discs on any car that is 8+ years plus old with decent mileage (80k+) should get replaced as a maintenance part anyway. Just like the rubber on your wheels, sometimes they need to be changed due to age and not just wear.

Detailer

Did mine at 70k not too long ago, replace both and the trans mount while your in there.