Power management on a vehicle

A vehicle control system comprising one or more controllers, the vehicle control system comprising a global power state and comprising at least two virtual machines being hosted on the one or more controllers wherein each virtual machine has a local power state, wherein the one or more controllers collectively comprise:

• at least one electronic processor having an electrical input for receiving a vehicle parameter signal indicative of a required global power state of the vehicle control system;
• and
• at least one memory device electrically coupled to the at least one electronic processor and having instructions stored therein,
• wherein the at least one electronic processor is configured to access the at least one memory device and execute the instructions thereon so as to:
• determine the local power state for each virtual machine in dependence on the received vehicle parameter signal;
• and
• update a current local power state of each virtual machine to the respective determined local power state therefor.