A maintenance system for a door arrangement. The door arrangement includes a door member and a drive unit configured to drive the door member. The maintenance system includes a control device comprising a motor control unit configured to control the drive unit and a non-temporary memory configured to store door data, a central maintenance data memory comprising maintenance data for at least one of configuring, monitoring and modifying the control device, a first bidirectional data connection, a second bidirectional data connection, and a mobile maintenance device. The door data is retrievable from the non-temporary memory. The mobile maintenance device is configured to be coupled to the non-temporary memory of the control device via the first bidirectional data connection to maintain the door arrangement, and to be directly or indirectly coupled to the central maintenance memory via the second bidirectional data connection.