Bosch Washing Machine Door Interlock Switch. If the door for your washing machine is no longer opening or closing as easy as usual, then you may have a fault with the door interlock. With this quality replacement, you can help your appliance get back to its best and get rid of that pile of laundry. Please check the model fit list to ensure this part is correct for your model. Specifications: Rold Type: DM series Comes without screws (Clipped) Colour: White