Toyota Prius c 2014 Owner's Manual page 184

2-2. Instrument cluster
Instrument panel light control
The brightness of the instrument panel lights can be adjusted by turn-
ing the dial.
■
The meters and multi-information display illuminate when
Vehicles without a smart key system
The engine switch is in the "ON" position.
Vehicles with a smart key system
The "POWER" switch is in ON mode.
■
The brightness of the instrument panel lights
When the tail lights are turned on, the brightness will be reduced slightly
unless the control dial is turned up fully.
■
Engine speed
On hybrid vehicles, engine speed is precisely controlled in order to help
improve fuel efficiency and reduce exhaust emissions etc.
There are times when the engine speed that is displayed may differ even
when vehicle operation and driving conditions are the same.
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Brighter
Darker