Toyota Avensis Owner's Manual page 279

 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 "MPH"
Fine adjustment: By approximately 8 km/h (5 mph) each time the
lever is operated
Large adjustment: By approximately 8 km/h (5 mph) for each 0.75
seconds the lever is held
AVENSIS_OM_OM20B99E_(EE)
2-4. Using other driving systems
Increase the speed
Decrease the speed
Fine adjustment: Momentarily
move the lever in the desired
direction.
Large adjustment: Hold the
lever in the desired direction.
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