Coast Control
WARNING: This page is about a different car, the 2003 Lexus RX 300 and 2002 Lexus RX 300. However, it is still accessible from the selected car via links, so may be relevant.
During cruise control driving, while the SET/COAST switch is ON, the motor in the cruise control actuator rotates to close the throttle valve, and decrease the driving speed. Every time the SET/COAST switch is turned on instantaneously, the vehicle speed is decelerated approximately 0.93 mph (1.5 km/h).