2012 Toyota Prius Owners Manual - Page 518

2-2. Instrument cluster Touch tracer display (if equipped) When the audio control switches, climate control switches, "DISP" button or "TRIP" button of the steering wheel are touched, the touch tracer display will appear in front of the gauges, with the touched button highlighted to allow the driver to identify the button that is being operated. The button can then be operated by further presses. If an audio/navigation system is used that is not compatible with the steering switches in this vehicle, the audio switch display may not operate correctly. 2 When driving 215