trouble shooting

What is this circled in red and why is it spraying antifreeze all over the engine?

My 300 crd suffers from a periodic start failure. And when the flatbed has delivered it to the dealer - it starts again. Although it shows the error code P0615 the dealer has been unable to find locate the problem. So far the replacement of the shift quadrant - at my expense of course - did not...

Hello everyone, newbie here, I have a 2005 300c, all stock, 5.7, and recently I had a CEL pop up, got it read and came back with a 0522 trouble code. I changed out the oil pressure switch with a replacement from autozone and after about 100 miles of driving it didn't go away. I bought another...