Disconnect power before attempting any appliance repair!
Bosch dishwasher have one common issue and that is a soap cup dispenser failure. One of two things normally happen, the part that slides breaks off or the wax motor fails. You can complete this repair on your Bosch dishwasher in under a hour. For Bosch dishwasher parts click on the link below and type in your model number.
Start by removing the screws that go around the inner door liner and control panel. Bosch dishwasher have two screws that hold the panel in place that enter from the side. With the front panel removed the soap cup dispenser will be visible. Bosch uses metal flanges to hold the dispenser in place. First the wires will need to be unplugged. Remove the wires that connect to the motor or solenoid and also the rinse agent chip if equipped. Use a small flat head screw driver to lift the metal flange up enough to slide the dispenser through the front panel.
Now the the soap cup is out you can install the new one. If you still have questions, you can use the forum link below to speak with a Bosch trained appliance technician.