1. A vision system for a vehicle, said vision system comprising: an imaging device having a field of view exterior the vehicle; a camera controller; a display device having a display element, said display device operable to display information for viewing by a driver of the vehicle; a display controller; wherein said camera controller and said display controller share a common processor; wherein said vision system is operable to adjust an image displayed by said display device in response to a signal from an auxiliary sensing system of the vehicle; a sensor operable to detect an object exterior the vehicle; wherein said vision system, responsive to said object detection by said sensor, is operable to at least one of (a) provide enhanced imaging of the detected object by said imaging device, (b) provide enhanced processing of at least a portion of an image captured by said imaging device that corresponds to the region of the exterior scene at which an object is detected by said sensor, (c) adjust said display device to enhance displayed images of an object detected by said sensor and (d) adjust said display device to enhance display of at least a portion of an image upturned by said imaging device that corresponds to the region of the exterior scene at which the object is detected by said sensor; and wherein said display controller is operable to affect an image signal of said imaging device by disabling a video termination at said display device.