C63 Head Bolt Issues
Discussion
Hi Gents,
I've got the dealer stripping and investigating the head on my c63 following significant unexplained coolant loss. I'm Expecting the worst and waiting for a big bill but in the mean time, has anyone here had similar problems and experience dealing with MB regarding good will gestures towards the repair?
These things happen, but suffice to say I'm quite disappointed especially as It's just ticked over 40k.
Thanks all
I've got the dealer stripping and investigating the head on my c63 following significant unexplained coolant loss. I'm Expecting the worst and waiting for a big bill but in the mean time, has anyone here had similar problems and experience dealing with MB regarding good will gestures towards the repair?
These things happen, but suffice to say I'm quite disappointed especially as It's just ticked over 40k.
Thanks all
Nickellese said:
Hi Gents,
I've got the dealer stripping and investigating the head on my c63 following significant unexplained coolant loss. I'm Expecting the worst and waiting for a big bill but in the mean time, has anyone here had similar problems and experience dealing with MB regarding good will gestures towards the repair?
These things happen, but suffice to say I'm quite disappointed especially as It's just ticked over 40k.
Thanks all
It's known by MB that pre 2011 cars have the suspect head bolts.....so I would like to think there is a good will gesture, if the dealer is having none of it try getting in touch with MB UK (head office) and see if they can assist.I've got the dealer stripping and investigating the head on my c63 following significant unexplained coolant loss. I'm Expecting the worst and waiting for a big bill but in the mean time, has anyone here had similar problems and experience dealing with MB regarding good will gestures towards the repair?
These things happen, but suffice to say I'm quite disappointed especially as It's just ticked over 40k.
Thanks all
An update for anybody interested or any poor unfortunates who have the same issues.
After investigation it was found that 3 bolts had snapped explaining the rapid coolant loss. There were otherwise no outward symptoms of the oil and water mixing.
Mercedes have agreed to a significant good will gesture, despite a specialist service history and the car not having been purchased from a dealer. Thank goodness for that as the rebuild cost is massive!
It seems the advice should be, any pre 2010 folk should if worried have their car checked before the damage has a chance to occur.
After investigation it was found that 3 bolts had snapped explaining the rapid coolant loss. There were otherwise no outward symptoms of the oil and water mixing.
Mercedes have agreed to a significant good will gesture, despite a specialist service history and the car not having been purchased from a dealer. Thank goodness for that as the rebuild cost is massive!
It seems the advice should be, any pre 2010 folk should if worried have their car checked before the damage has a chance to occur.
BHML said:
Is it pre-2010 cars or pre-2011 cars that are affected? I have a 2010 estate (pre-facelift)
Yours will be in the effected range....remember the M156 engine was in many cars so probably only a handful in the uk that will fail. If you have the warranty then don't worry. If you have let the warranty lapse like I did you can change out the bolts for either new style bold or fit ARP studs ( like I am)Loads of info about this on the MBWorld forum
The head bolts were modified at M156 engine number ending in 60658. The bolts went from female torx fitting to male torx fitting.
The correct procedure is to remove the heads and replace the head gaskets. Replacing the bolts one at a time isn't recommended, due to the potential for the head gasket to fail.
If you were to opt for Weistec studs, as Lee has done, I understand they can be fitted one out, one in, but I doubt an MB dealer will be interested in that.
The correct procedure is to remove the heads and replace the head gaskets. Replacing the bolts one at a time isn't recommended, due to the potential for the head gasket to fail.
If you were to opt for Weistec studs, as Lee has done, I understand they can be fitted one out, one in, but I doubt an MB dealer will be interested in that.
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