2012 Toyota Prius Owners Manual - Page 1060

2-2. Instrument cluster MPH or km/h button The speed units can be selected MPH or km/h. Press the button to switch the display between MPH and km/h. 2 When driving Instrument panel light control The brightness of the instrument panel lights can be adjusted by turning the dial. Brighter Darker When the headlight switch is turned to ON, the brightness will be reduced slightly unless the control dial is turned fully up. 199 PRIUS v_U (OM47784U)