Toyota Prius+ Owner's Manual page 282

2-4. Using other driving systems
 Adjusting the set speed
To change the set speed, operate the lever until the desired set
speed is displayed.
In the vehicle-to-vehicle distance control mode, the set speed will be
increased or decreased as follows:
• When the set speed is shown in "km/h"
Fine adjustment: By approximately 5 km/h (3.1 mph) each time the
lever is operated
Large adjustment: By approximately 5 km/h (3.1 mph) for each
0.75 seconds the lever is held
• When the set speed is shown in "MPH"
Fine adjustment: By approximately 5 mph (8 km/h) each time the
lever is operated
Large adjustment: By approximately 5 mph (8 km/h) for each 0.75
seconds the lever is held
In the constant speed control mode (P. 287), the set speed will be
increased or decreased as follows:
Fine adjustment: By approximately 1.6 km/h (1 mph) each time the
lever is operated
Large adjustment: The set speed can be increased or decreased con-
tinually until the lever is released.
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PRIUS +_OM_OM47821E_(EE)
Increases the speed
Decreases the speed
Fine adjustment: Momentarily
move the lever in the desired
direction.
Large adjustment: Hold the
lever in the desired direction.