A method for operating a mobile navigation device in a vehicle. The vehicle is equipped with a radio device and wherein the navigation device encompasses at least one device for generating maneuvering instructions and a transmitter device for generating radio signals and wherein signals can be transmitted by the navigation device to the receiving part of the radio device by means of the transmitter device. The method includes the following method steps: a) computing a maneuvering display including a maneuvering instruction, which is to be displayed graphically; b) encoding the maneuvering display as a radio signal; and c) transmitting the maneuvering display, which is encoded as a radio signal, by the transmitter device of the navigation device, for transmitting the maneuvering display to the radio device.