car make grinding noise when starts and dissappears after a few minutes on 2006 Mercedes-Benz C280 4MATIC

car make grinding noise when starts, after a few minutes noise will dissappear

by in Pittsburg, CA on August 04, 2011
2 answers
ANSWER by on August 04, 2011
It would be best to stop by and have an experienced technician listen to your grinding noise. Maybe your starter is going bad. It is hard to tell with out actually hearing the sound.
ANSWER by on August 04, 2011
Sounds like a secondary air pump. On the next start up have the hood open and try to find out what is making the noise. It will help us out...