Brandt BDJ424DB Instruction Manual page 18

Auto Open Door
The dishwasher door opens automatically at the end of the program, which improves
the drying results. (If the dishwasher is built-in the surrounding furnishings must be
resistant to any condensation.)
NOTE:
The dishwasher door must not be blocked when set to open automatically.
This can disrupt door lock functionality.
"Filling the detergent dispenser"