Press up on the door latch to unlock and lower the Bosch door. Pull out the bottom dish rack on wheels.
Twist the filter cap on the inside bottom of the Bosch half a turn counterclockwise and lift it straight out.
Remove the cylinder filter underneath the filter cap.
Rinse both parts under water until each is clean.
Insert the filter and cap into the Bosch, and twist the cap half a turn clockwise to lock it in place.