I had the same thing with mine.
I was told it is the oil getting up to the hydraulic tappets.It only happens on cold mornings coz the oil is a bit thicker due to the drop in temp.
Apparantly it is nothing to worry about as long as it only lasts a couple of seconds.I hope this puts yor mind at rest as it did mine when i was told.
Hope one of the experts does not tell us something different coz mine has been doing it off and on for months with no ill effect,
Oh, that makes sense. Yeah it only lasts for maybe 5 seconds. The reason I was a little concerned is because this is the first winter the car has been in cold weather (it went to Florida for every winter for the past 10 years).
BenzWorld.org forum is one of the largest Mercedes-Benz owner websites offering the most comprehensive collection of Mercedes-Benz information anywhere in the world. The site includes MB Forums, News, Galleries, Publications, Classifieds, Events and much more!