Abstract: An assistance device for a motor vehicle consisting of an on-board terminal and manual controller, and a remote processing center able to communicate with the terminal via a radiotelephone network. The remote processing center handles exchanges with the on-board terminal by recognizing user requests made verbally or by means of the manual controller, and sends information to the terminal.

Abstract: An assistance device for a motor vehicle, the device comprising firstly a terminal (1) on board a vehicle with manual control means placed inside the vehicle and connected to said terminal, and secondly a remote processing center (8) suitable for communicating with the on-board terminal via a radiotelephone network (6), said center being suitable for handling exchanges with said on-board terminal by means of a given protocol and including, in particular for this purpose, means (7) for recognizing requests formulated verbally by the user (5) and/or requests corresponding to the user actuating manual control means, and also means for sending information to the on-board mobile terminal, the device being characterized in that the manual control means comprise a control element (2) which makes only a single type of actuation available to the user, the exchange protocol handled by the processing center (8) enabling the user to dialog with said processing center only by actuating the control element (2) and/or by fo