Method of operating a motor vehicle transmission system
A method of operating a transmission system of an automotive vehicle, the transmission system including a mechanism of mechanically coupling first and second axles of the transmission system, a status of the coupling mechanism defining a number of transmission modes. The transmission system includes a button of pulse type controlling selection of a transmission mode and, after the vehicle has stalled, the transmission mode that is active following restarting of the vehicle is the mode that was active before the vehicle stalled.
1. A method for operating a transmission system of a motor vehicle, the transmission system including means for mechanically coupling first and second axles of the transmission system, a state of the coupling means defining a number of transmission modes, and a switch or button controlling selection of the transmission mode, the method comprising:
activating, after the vehicle has stalled and then restarted, the transmission mode that was active before the vehicle stalled.
2. The operating method as claimed in claim 1 , further comprising storing in a memory the transmission mode that is active at a time of the stall and keeping this transmission mode in this memory for a limited duration.
3. A non-transitory computer-readable data storage medium on which is stored a computer program for operating a transmission system of a motor vehicle, the transmission system including means for mechanically coupling first and second axles of the transmission system, a state of the coupling means defining a number of transmission modes, and a switch or button controlling selection of the transmission mode, and when the computer program is executed by a computer, the computer program causes the computer to execute:
activating, after the vehicle has stalled and then restarted, the transmission mode that was active before the vehicle stalled.
4. A transmission system of a motor vehicle, the transmission system comprising:
a coupler to mechanically couple first and second axles of a transmission system, the first axle being driven by default and the second axle being driven according to a state of the coupling means, the state of the coupling means defining a number of transmission modes;
a switch or button to control selection of the transmission mode; and
a computer to activate, after the vehicle has stalled and then restarted, the transmission mode that was active before the vehicle stalled.
5. The operating method as claimed in claim 1 , wherein the transmission system includes three of the transmission modes.
6. The operating method as claimed in claim 2 , wherein the limited duration is 30 seconds.
7. The transmission system as claimed in claim 4 , wherein the computer stores in a memory the transmission mode that is active at a time of the stall and keeps this transmission mode in the memory for a limited duration.
8. The transmission system as claimed in claim 7 , wherein the limited duration is 30 seconds.