Warning device and method for warning a vehicle driver of a motor vehicle

1. A system for warning a driver of a motor vehicle, comprising:

a driver assistance system configured to at least partially take-over vehicle navigation from the driver, and to output a triggering signal in response to a certain event requiring a driver take-over of the vehicle navigation from the driver assistance system;

a mobile terminal located in the vehicle, the mobile terminal being coupled to the driver assistance system and having a corresponding program module by which unrestricted use of the mobile terminal is permitted in the vehicle, wherein

the program module interrupts the unrestricted use and outputs a warning signal via the mobile terminal prompting the driver to take over said vehicle navigation from the driver assistance system when the triggering signal is received by the mobile terminal.

2. The system according to claim 1 , wherein the warning signal comprises at least one specific operating instruction for the driver of the motor vehicle.

3. The system according to claim 1 , wherein when the warning signal is output, further use of the mobile terminal is prevented until defined interventions in a drive of the motor vehicle have been carried out.

4. The system according to claim 1 , wherein the triggering signal is output by the driver assistance system to the mobile terminal only when the mobile terminal is actuated.

5. A mobile terminal for use with a driver assistance system of a motor vehicle, wherein

the mobile terminal is connectable to the driver assistance system in the motor vehicle that is configured to at least partially take-over vehicle navigation from a driver of the motor vehicle and includes a program module by which unrestricted use of the mobile terminal is permissible in the vehicle, and

the unrestricted use of the mobile terminal is interrupted upon receiving a triggering signal from the driver assistance system in response to a defined event requiring a driver take-over of the vehicle navigation from the driver assistance system, the program module outputting a warning signal to the driver, via the mobile terminal, prompting the driver to take-over said vehicle navigation from the driver assistance system.

6. The mobile terminal according to claim 5 , wherein the warning signal comprises a specific operating instruction for control of the motor vehicle.

7. The mobile terminal according to claim 5 , wherein when the warning signal is output, further use of the mobile terminal is prevented until at least one specific drive intervention has been carried out.

8. A method for warning a vehicle driver that a driver take-over action from a driver assistance system is necessary, the method comprising the acts of:

providing a mobile terminal in the vehicle, the mobile terminal being connected to a driver assistance system of the motor vehicle that is configured to at least partially take-over vehicle navigation from the vehicle driver and having a program module by which unrestricted use of them mobile terminal is permitted in the vehicle; and

receiving, by the mobile terminal, from the driver assistance system, a triggering signal in response to a defined event requiring the driver take-over of the vehicle navigation from the driver assistance system; and

upon receiving the triggering signal, interrupting the unrestricted use of the mobile terminal and outputting, via the mobile terminal, a warning signal prompting the driver to take over said vehicle navigation from the driver assistance system.

9. The method according to claim 8 , further comprising the act of:

preventing further use of the mobile terminal until a specific driver intervention action occurs.

10. The method according to claim 8 , wherein the triggering signal is received only when the mobile terminal is actuated.