Replacing a faulty dishwasher soap cup is done by removing the front panel of the dishwasher.
Start by removing the screws around the inner door liner, gaining access by separating the door will allow access to the soap cup dispenser.
Some models have small screws holding the soap cup to the door, Bosch dishwasher soap cups are held in place with metal locking tabs.
With the screws removed or tabs bent push the soap cup from the door liner. You will need to disconnect the wires that attach to the soap cup and reinstall on the new assembly.
The dishwashers door will need to be installed before you run a test cycle. If the jet dry indicator will not shut off and the dispenser is full the soap cup assembly will need to be replaced to fix the issue.