NOVELTY - The method (300) involves applying (304) a braking force to an output shaft of a combustion engine using an electrical machine to increase a work performed by combustion in the combustion engine. A response is provided to the braking force by increasing the amount of fuel supplied to the combustion engine. The braking force is applied to the output shaft in a situation where fuel is already supplied to a combustion chamber of the combustion engine.    USE - Method for warming a vehicle component of a vehicle (Claimed) by increasing the load of a combustion engine with a braking force.    ADVANTAGE - The braking force is applied to an output shaft of a combustion engine using an electrical machine to increase a work performed by combustion in the combustion engine which ensures that the electrical energy is converted to a propulsive force with relatively high efficiency, while being used to exert a braking force on the vehicle tractive wheels which regenerates electrical energy from absorbed kinetic energy for feedback to the vehicle electrical system. The regenerated energy is effectively used by the electrical machine to generate a propulsive force. The engine-braking force exerted by the electrical machine is enabled to generate an electric current, making it possible for the absorbed braking energy to be taken over and fed back in electrical form to an energy store and be converted to heat for warming of vehicle components. The load applied is calculated or controlled with great accuracy.    DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following    (1) a computer programme comprises a programme code;    (2) a computer programme product comprises a computer-readable medium; and    (3) a system for warming a vehicle component of a vehicle.    DESCRIPTION OF DRAWING(S) - The drawing shows a flowchart of a method for warming a vehicle component of a vehicle.    Vehicle component warming method (300)    Determining whether the combustion engine of the vehicle is started (301)    Determining whether an exhaust limitation function is to be activated (302)    Determining whether the parking brake is applied (303)    Applying a braking force (304)