VEHICLE HAVING TAILGATE AUDIO MODE AND METHOD

A vehicle has a body, a plurality of audio devices supported on or within the body, a motor and a plurality of electronic modules including an audio control module, a display control module, a lock control module, a brake control module and a modem control module. One or more batteries power the plurality of audio devices and the plurality of electronic modules. A controller is configured to control electrical power supplied to the plurality of electronic modules and configured to operate in a tailgate audio mode to control electric power supplied by the one or more batteries to the electronic modules in the tailgate audio mode. The controller determines available battery energy and expected energy and derates the power supplied to one or more of the plurality of electronic modules based on power supply of the one or more batteries in the tailgate audio mode.