Toyota prius Owner's Manual page 265

Setting up the display
 Setting the brightness
The brightness of the display is automatically adjusted in accor-
dance with the brightness of the surrounding environment. How-
ever, the brightness can also be manually adjusted in 5 stages.
 Adjusting the display position
PRIUS_OM_OM47871E_(EE)
2-2. Instrument cluster
Darker
Brighter
The brightness can be manually
adjusted in 5 stages.
Lower
Higher
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