Toyota prius Owner's Manual page 250

2-2. Instrument cluster
 Setting the gasoline price
STEP 1
STEP 2
250
PRIUS_OM_OM47871E_(EE)
Select "PETROL PRICE".
Press and hold the "DISP" button
to enter the setting mode.
Select gasoline price by pressing
the "DISP" or "TRIP" button.
Press and hold the button to
change the amount continuously.
If neither button is operated for
approximately 5 seconds, the set-
ting will be changed and the
screen will return to the previous
display.