Cold start timing chain rattle.
Brought my 2013 ML350 to Dealer with this information for this problem. They changed out chain tensioners. Install check valves etc. Hope this helps someone.
Today I just posted problem with my ML350 blue efficiency,
which seems to be quite similar to yours. Actually it can be chain rattle in my case as well.
Did you diagnose the car during that time, have you got the code for this malfunction?
In my case code is P002177 (by Xentry program).
Description is camshaft position different from given,
Given cannot be reached, Bank1 intake.
Trying to google it but nothing worthy comes up.
Anyways if you would post repairs, would be great. Might be this will help
me greatly.
My post is: camshaft positioning problem P002177, 2012 ml350 4matic gasolin.
from today.
Many thanks


