clattering

I have purchased a 2003 ML270 CDI. I noticed a noise when turning corners and read up on it, suggestions were to check power steering fluid. I did this and with a warm engine, the fluid level was below the Min of the 20 degrees section. ( very very low right ? ) I topped this up, which...

Here's what happens: Start up - go to the supermarket - stop - return to car 15-20 mins later - start up - metallic clattering from underneath - move off - clattering ends. This does not happen when starting from cold - only when the engine is warm. If I get out of the car to have a look...

I have a hoping to get some opinions on the following problem on my father's C220 (1995). There is a clattering noise from the front of the engine. I held a screwdriver to suspect component as suggested by a posting in this forum and it appears to be coming from the component shown it picture...

My C280 (V6) is having a bad month! Just fixed my aircon blower and now I am getting a metallic clattering sound from the engine at idle. It goes away as soon as any revs applied and then the engine seems smooth and quiet as ever. I have tried to hear where it is coming from but it could be...