Toyota PRIUS Manual page 358

2-4. Using other driving systems
 Setting the vehicle speed (vehicle-to-vehicle distance con-
trol mode)
STEP 1
STEP 2
358
PRIUS PHV_OM_OM47831E_(EE)
Press the "ON-OFF" button to
activate the cruise control.
Radar cruise control indicator
will come on.
Press the button again to
deactivate the cruise control.
Accelerate or decelerate the
vehicle to the desired speed,
and push the lever down to set
the speed.
"SET" indicator will come on.
The vehicle speed at the
moment the lever is released
becomes the set speed.