A device and method for assisting a driver when parking his vehicle in a parking installation and removing his vehicle therefrom is provided. The vehicle is equipped with a driving assistance system which permits remote-controlled movement and steering. The device has a parking management and monitoring apparatus which is configured to determine, at the start of a parking phase, a first route for a vehicle, which has been left behind by the driver in an entry region of the parking installation, to a currently available free parking space within the parking installation, and transmit corresponding movement instructions to the driving assistance system of the vehicle, and determine, at the end of the parking phase, a second route for the vehicle from this parking space to an exit region of the parking installation, and transmit corresponding movement instructions to the driving assistance system of the vehicle.