Ingenieur

So are you waiting to take it to the dealer or do they have the car? Must have gotten it today judging from you post time/date

You have beed driving it for 3 months adding 2 gal/week with no issue...what did you tell them that made them so eager to get the car and made them tell you not to drive it and have it towed?
Seems like the damage has been done

Jasonoff

Where and Canada and which dealer? How far out of warranty are you?

Overrated

Has there been any known 2012 P31 C63 with this head bolt issue?

Valvestud

A review of the numerous posts about the issue shows that the headbolts were changed somewhere early in model year 2011. So the answer to your question is no, and there won't be any.

Regards,

Joe

Overrated

I looked though about the 10 most recent pages of this thread and could not see this answer.


Thank you for the info Joe.

Spearsba

Joe, Can you check my VIN, WDDGF7HB7BF648159.

Thanks, Ben

6.3-amg

Hi folks,
I take it engine number ending 60067123 should be in the clear?
Many thanks

Valvestud

Correct.


Regards,


Joe

6.3-amg

Joe,
Thank you for confirming.
Best wishes

saziz

So after paying for a second tank and cap (despite already changing it), MB has confirmed that it is a head bolt issue and it will cost $3900+ to fix the issue. MB Canada has indicated that they will not cover any of the cost since there is no recall and no remaining warranty so I'm going to fix it now and sell it.

Ingenieur

How did they confirm it?
Removed the head?

Valvestud

Are you selling because you're angry at MB? You're fixing pretty much the one thing that concerns us owners about the vehicle. Why sell it now?


I'm keeping mine and if it has to be repaired I'll try to get MB help, otherwise I'll fix and move on.


Regards,


Joe

Ingenieur

Rational reasoned thought process

saziz

Yeah they took it apart and confirmed it's a head bolt issue. Said there may be a slim chance that they would have to replace the pistons since MB put in pistons that were too large initially which would cost in 10K range.
Yes I'm selling it because I'm pissed. I was going to go to an amg sedan anyway but will just look at something else all together.

Valvestud

Gotcha. I just noticed you have an ML. I just traded my 2010 ML63 for a 2015 Yukon Denali last week. I made the move because I wanted something larger, but also because the ML is coming out of warranty in August. I couldn't justify the extended warranty cost versus likey issues down the road with items such as Airmatic suspension failures and perhaps the headbolts. But I will stick with my C63 for the foreseeable future.

Regards,

Joe

saziz

So you're happy with the C?

motoman

The pistons are too big...? So if MB owns that they can give you the headbolt labor free. Did the engine know the pistons were too big? Once fixed keep the car.

Valvestud

With the exception of the uncomfortable seats, I really enjoy the car. Still love pushing the start button and listening to engine come to life. Best sound ever.


Joe

Ingenieur

Hogwash

How manyymiles on it?
And in what way or dimension(s) are the pistins 'too big'
Nonsense

saziz

High mileage now ~80K but that's irrelevent since my last two benzs went to almost 300K with no issues. I'd still be driving my Eclass if it hadn't been stolen.
I didn't ask about what they meant by the pistons being too big. I just made it clear I wasn't too happy especially if MB knew this was a defect so they just said it was a "very slim" possibility and that they would see what they could do so now I'm waiting for a final verdict.

Jasonoff

In Canada we have kilometers. They're a little different than miles...

saziz

Yes there are ~130k kms on it

Ingenieur

So the car ran for 80k miles with 'too big' pistons
What does that mean?

blainjl

This is my story of getting a new engine from AMG.
First off, I'm new here. I've had my baby for about a year now. She's a 2009 C63. I bought her used at 46K mi. and, apparently, I'm the third owner. She is now shy of 52K.


2K miles of bliss then I smelt coolant. I took her to a third party Mercedes shop (Burback Motors) and they confirmed that I had a problem and that, since they don't have the tools, that I need to take it to the local dealership, MB of Portland.
I don't have a problem with naming either shop. Burback is a straight-up honest, family run shop and I appreciate their professionalism. So I limped my baby across the river to the dealership service dept. and into Charles Haga’s (Chuck) service.
Yep, Chuck confirmed that I had a leak from the head cover and the bolts are bad. Bad news, though. My car is out of warranty by time. ****! I need the car back so I agree to go ahead with repairs. The cost came out to about $4200 (might have been a bit inflated by the dealership). However, Chuck advocated for me and I was given the offer of paying only half and the dealer would pay the other half. Hells yeah!


I decided that since the heads were off that they be sent to the machinist for a once over. This is not part of the work order that MB has done to correct the head bolt issue. I did this on my own dime at the estimate of $1K. They found that the valve guides were worn, so we replaced them. Final cost was still $1K.

Three weeks later and I have my baby back on the road. 200 miles later, as I’m passing a semi truck on my way to work, the car loses power, sounds awful and all sorts of lights flash on the dash. Oh, ****! My baby is dead on the side of the road (semi truck blowing his horn at me as he passes, HAH!) Back into the shop and Chuck and I are stumped.
They find that the valves have struck a few piston heads and cracked one. The engine and heads are sent to the machine shop for further inspection and to figure out the cause. Days go into weeks and finally the MB rep is available to look at the engine and heads. There is lots of back and forth. Weeks of it. But the final verdict is that the lifters got stuck somehow and caused the problem. And since MB of Portland warrants all of their work (thankfully I had that head work done) they bought me a new engine for my baby.



Even though I had my car in the shop for about 3 months and had an engine destroying event, I still have full confidence in MB of Portland service’s dept. and management to do right by their customers. Many thanks to Chuck and his service crew.

Almost 4K miles since the new engine and no problems. I love this car and engine!

whoover

You really lucked out. Soft lifters that wear prematurely are the other endemic problem with the early engines. You "should" have had them replaced with the SLS version (compatible but superior) when you had the head work done. By not knowing that, you got a free engine. You can pick my lottery numbers any time.