Lexus 2008 IS250 Owner's Manual page 156

2-4. Using other driving systems
Driving in the selected cruise control mode
n
Adjusting the speed setting
n
156
Accelerate or decelerate the
vehicle to the desired speed and
press the lever down to set.
Increase speed
Decrease speed
To change the set speed, oper-
ate the lever until the desired set
speed is displayed.
increments)
move lever in
desired direction and release
increments)
the lever in the desired
direction