Hi all,im a new user here and wanted to share a link to a service bulletin from MB for anyone who is concerned about head bolt failure issue on the W211 E63.
Please refer https://www.datamb.com for engine number and vehicle information . Visit http://australiancar.reviews/_pdfs/M...tin_200901.pdf to cross check with the serial number of the engines affected by this issue.
Thank you.

 

This only references cam shaft adjusters and valve tappet noise issues not head bolts.

 

Im sorry for the wrong link, only the engines after the engine number ending in 60658 were replaced with new head bolts.

 

so only a service bulletin not recall...thanks for the info!