Whats the range of VINs that are affected by the M156 head issues?
03-29-2013, 06:51 PM
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Obsidian Black 2009 C63 w/ P30 Package
Whats the range of VINs that are affected by the M156 head issues?
Does anyone know the range of VINs that are affected by the M156 cylinder head sealing issues? Im going to go check a 2009 C63 and will be checking for that. Thanks
03-29-2013, 06:54 PM
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2009 is guaranteed to be within the affected range of cars. Sometime in the middle of 2010 is where the new bolts were used. I have a 2010 and I'm on the bad list.
03-29-2013, 06:58 PM
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Obsidian Black 2009 C63 w/ P30 Package
Wow that was not the drastic answer I was looking for but I guess better to know before the purchase.
What have 2009 owners been doing? Can they request for the soon to be defective head bolts be replaced per warranty if they still have the manuf warranty?
What have 2009 owners been doing? Can they request for the soon to be defective head bolts be replaced per warranty if they still have the manuf warranty?
03-29-2013, 06:59 PM
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Obsidian Black 2009 C63 w/ P30 Package
Does anyone have this list by any chance? I searched and no clear visible list on this forum. Or is this something I have to do with a Mercedes Dealership?
03-29-2013, 07:04 PM
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Vivid Racing '09 C63 AMG
It's actually by engine #. A dealer can look it up.
MB won't cover anything preventative. That's the point of contention. They'll fix it if you're under warranty or extended warranty. Otherwise, you'll need to spend about $4k to install the Weistec studs. That cost is mostly labor.
MB won't cover anything preventative. That's the point of contention. They'll fix it if you're under warranty or extended warranty. Otherwise, you'll need to spend about $4k to install the Weistec studs. That cost is mostly labor.
03-29-2013, 08:39 PM
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Regards,
Joe
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03-29-2013, 09:34 PM
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03-29-2013, 10:06 PM
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'09 C63
This may be a dumb question, but what's the best way to 'break' these head bolts; driving-wise. I've never really put my engine under heavy load (no track days or drags) but have driven it in bouts of aggressiveness. Would increased aggressive driving cause these bolts to wear out faster?
My car just hit 30k and that's just below the threshold that most 2009 cars experience the issue. My warranty is up mid-April and would definitely want this to be covered warranty if at all possible.
My car just hit 30k and that's just below the threshold that most 2009 cars experience the issue. My warranty is up mid-April and would definitely want this to be covered warranty if at all possible.
03-29-2013, 10:39 PM
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Vivid Racing '09 C63 AMG
This may be a dumb question, but what's the best way to 'break' these head bolts; driving-wise. I've never really put my engine under heavy load (no track days or drags) but have driven it in bouts of aggressiveness. Would increased aggressive driving cause these bolts to wear out faster?
My car just hit 30k and that's just below the threshold that most 2009 cars experience the issue. My warranty is up mid-April and would definitely want this to be covered warranty if at all possible.
My car just hit 30k and that's just below the threshold that most 2009 cars experience the issue. My warranty is up mid-April and would definitely want this to be covered warranty if at all possible.
Well, the problem is although all of the '08 and '09 cars and some of the '10s are affected, not all of them will fail. It's like Russian roulette. It's not a matter of WHEN they'll fail, it's a matter of IF. So if yours are good, perhaps nothing will break them. I don't think there's a silver bullet here.
03-30-2013, 11:14 AM
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Obsidian Black 2009 C63 w/ P30 Package
is the engine number on the front face of the motor where the signature of the hand crafted engineer from amg factory have their name on?
03-30-2013, 11:24 AM
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03-30-2013, 11:34 AM
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Obsidian Black 2009 C63 w/ P30 Package
I think site only mentions as early as #60658 motors were affected. Is the engine number and VIN number on car have any correlation if motor "might" be affected with issue? Thanks
03-30-2013, 11:56 AM
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This is also kinda on the same topic....
Anyone know if and when they changed the valve lifter buckets on the M156 motor to the M159 (SLS) ones?
According to the parts manual... the old M156 part number is now superseded by the SLS M159 part number....
Anyone know if and when they changed the valve lifter buckets on the M156 motor to the M159 (SLS) ones?
According to the parts manual... the old M156 part number is now superseded by the SLS M159 part number....
03-30-2013, 02:14 PM
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Obsidian Black 2009 C63 w/ P30 Package
can someone check if this is on the bad batch vin is WDDGF77X29F243981
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03-31-2013, 01:28 AM
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my wife bananas! :D
my car unfortunately is in the bad engine range. As far as my research has gotten me, for a 2010 to be not included in the bad engine range, it is a really late build
03-31-2013, 12:23 PM
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03-31-2013, 12:26 PM
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can someone check if this is on the bad batch vin is WDDGF77X29F243981
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Regards,
Joe
03-31-2013, 12:27 PM
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03-31-2013, 12:30 PM
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03-31-2013, 01:53 PM
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C63AMG, NIssan NX2000, Pontiac Fiero GT
Merc has shown us corrosion at the top of his headbolt. Seems prudent to change that coolant asap and ignore the ?4 year/ mileage call out in MB literature. I do not know why alloy bolts should corrode so badly having seen high mileage cast iron waterpump impellers with very little corrosion. My car is affected and out of warranty.
03-31-2013, 04:39 PM
#25
motoman - That's good advice but this problem goes well beyond what accelerated coolant changes can solve or possibly even slow down - IMHO - and you will see corrosion regardless of a revised maintenance schedule. Given a choice between spending the $$$$ for an extended warranty (which I did already) or cash it in and proactively address the issue via replacement immediately after it's off the OE warranty I'll definitely choose the latter option. So, no extra coolant changes for me but as generalized advice motoman is on solid ground here and it's well worth a try for most.
