I just finished a service

This leekage may come from thermostads water isolation ring, just under rezistance leads. There must be a ceramic holder to fix it to rezistance. İf it is broken, thermostad may go down, or rezistance leads isolation (lastic washer) may leak water (you must fix from under machines by turning bolt between to rezistance leads...
Hope you fix it.

i am Bosch service tech you don't need a new machine the d/w is set up so if water leaks it will leak in the plastic base you have to pull it from the cavity to fix it if you have a braided water line and a little slack on the electrical you can do it. if you run the machine and get a F code on the display you have a fill fault or water in the sump most likely it is the presure switch on the side of the d/w left hand side.

call me if you need me to walk you through it
don
262-893-4840