Water Leak
 

Hi,

I have a 2002 ML 500. I have had it since new. I have about 28K miles. I just noticed that the passenger floor in the front is wet. It is on the flat part of the floor and not going up the toe kick. It seems to be wetter closer to the kickpanel and the door. It is starting to smell musty inside. Any ideas where to look would be appreciated. Thank You

Any ideas?

H2O leak
 

'If it ain't coolant , it must be condensation from the evaporator.(drain plugged)

Where would I find the drain???