93 500E coolant leak

[Joshdude]

Hey, I have a 1993 500E and recently I noticed that my engine coolant level light was turning on and off, mostly staying on. Today I added some coolant to the reservoir and the light stayed off. Then, as I drove the car later, the light came back on (still going off randomly as well) and I checked the coolant tank - empty. I looked under the car; found a puddle and this:













Anyone have any ideas as to what exactly is going on here? Is this something I can fix readily or will I end up having to take it to a shop? Any input is appreciated. Thanks!