Method for operating a vehicle

1 . A method of operating a vehicle when stopping the vehicle and/or when holding the vehicle at a standstill, the vehicle comprising an electric motor, the method comprising:

decelerating the vehicle;

switching the electric motor to an active short circuit to prevent the vehicle from rolling; and

limiting, when the electric motor is switched to the active short circuit, a rollaway speed of the vehicle to less than 1 km/h,

wherein a regenerative deceleration is carried out to decelerate the vehicle, and

wherein the switching of the electric motor to the active short circuit is carried out after the regenerative deceleration of the vehicle.

2 . The method according to claim 1 , wherein the regenerative deceleration is initiated automatically when a non-critical first fault in the brake system or the brake-by-wire system of the vehicle has been detected and has not been resolved, or when a critical second fault has been detected in a brake system or a brake-by-wire system of the vehicle after the non-critical first fault.

3 . The method according to claim 1 , wherein the electric motor is switched to the active short circuit below an active short circuit speed limit, and wherein, the active short circuit speed limit of the electric motor for switching to the active short circuit is determined depending on a weight or a load weight of the vehicle and/or a topology or a slope of a roadway on which the vehicle is brought to a standstill.

4 . The method according to claim 1 , wherein, when the electric motor is switched to the active short circuit, stator windings of the electric motor are short-circuited at connecting cables by a switch or an electronic switch or a field-effect transistor.

5 . The method according to claim 1 , wherein the vehicle is passively stopped and/or held at a standstill by switching the electric motor to the active short circuit without energizing stator windings of the electric motor.

6 . The method according to claim 1 , wherein, after switching the electric motor to the active short circuit, an accelerator pedal operation is switched off, or wherein the active short circuit of the electric motor is interrupted during an accelerator pedal operation, and wherein the accelerator pedal operation is switched off or permitted depending on the topology of a roadway on which the vehicle is brought to a standstill.

7 . The method according to claim 1 , wherein, after switching the electric motor to the active short circuit, a steering function of the vehicle is permitted.

8 . The method according to claim 1 , wherein the electric motor of the vehicle prevents the vehicle from rolling when switched to the active short circuit.

9 . A non-transitory computer-readable medium storing a computer program thereon that, when executed by a computer, causes the computer to perform the method according to claim 1 .

10 . A control unit comprising a computing unit and a memory unit in which a code is stored which, when at least partially executed by the computing unit, performs the method according to claim 1 .

11 . A vehicle comprising the control unit according to claim 10 .

12 . A method of operating a vehicle when stopping the vehicle and/or when holding the vehicle at a standstill of the vehicle, the vehicle comprising an electric motor, the method comprising;

decelerating the vehicle; and

energizing a stator winding of the electric motor with phase switching of stator windings of the electric motor to prevent the vehicle from rolling,

wherein a regenerative deceleration is carried out to decelerate the vehicle, and

wherein the energizing of the stator winding of the electric motor with phase switching of the stator windings is carried out after the regenerative deceleration of the vehicle.

13 . A vehicle comprising an electric motor, wherein, by energizing a stator winding of the electric motor with phase switching of the stator windings of the electric motor, after a regenerative deceleration of the vehicle is carried out to decelerate the vehicle, the vehicle is prevented from rolling.