Reason for recall: On certain diesel engines the 'O' ring may not have been produced to the correct specification. This may allow oil to leak and contaminate the environment. If excessive oil is lost engine damage may occur.
When was it announced?
Jan 16, 2015
What action are Mercedes Benz taking?
On affected vehicles replace the chain tensioner sealing ring.
Does this affect your M Class?
This issue affects M Class SLK C Class E-Class CLS S Class CLA GLA A Class & B Class, this particular recall is for the M Class.