A smart vehicle treatment system includes a vehicle treatment device configured for movement along multiple degrees of freedom, such as rotation and translation. A plurality of activatable components, such as lights and/or actuators, are disposed on the treatment device and controllable by one or more sub-controllers disposed on the treatment device. The sub-controllers receive a multiplexed communication signal from a main controller located remote from the treatment device. The multiplexed communication signal and power are transmitted through a movement mechanism that provides the multi-degree of freedom movement. The movement mechanism may include a slip ring, which electrically connects the main controller to the sub-controller on opposite operative sides of the movement mechanism. Multiple individually activatable components can be selectively activated on the treatment device via the multiplexed communication signal.