Lexus IS250 U Owner's Manual page 193

Adjusting the set speed
To change the set speed, operate the lever until the desired set speed is obtained.
Increases the speed
1
Decreases the speed
2
Fine adjustment: Momentarily move the
lever in the desired direction.
Large adjustment: Hold the lever in the
desired direction.
The set speed will be increased or decreased as follows:
Fine adjustment: By approximately 1 mph (1.6 km/h) each time the lever is operated.
Large adjustment: The set speed can be increased or decreased continually until the
lever is released.
Canceling and resuming the constant speed control
Pulling the lever toward you cancels
1
the constant speed control.
The speed setting is also canceled when
the brakes are applied.
Pushing the lever up resumes the
2
constant speed control.
Resuming is available when the vehicle
speed is more than approximately 25
mph (40 km/h).
IS350/250_U (OM53C50U)
4-5. Using the driving support systems
193
4