Lexus RX300 Manual page 195

STARTING AND DRIVING
Resetting to a slower speed
Press the control lever downward in the "SET/COAST" direction
and hold it. Release the lever when the desired speed is attained.
While the lever is held downward, the vehicle speed will gradually
decrease.
When the difference between the actual vehicle speed and the set
speed is less than 5 km/h (3 mph), the set speed can be lowered 1.6
km/h (1 mph) each time by pressing the control lever downward in
the "SET/COAST" direction quickly.
However, a quicker way to reset is to depress the brake pedal and
then press the control lever downward in the "SET/COAST"
direction.
Even if you turn off the overdrive switch with the cruise control on,
engine braking will not be applied because the cruise control is not
cancelled. To decrease the vehicle speed, reset to a slower speed
with the cruise control lever or depress the brake pedal. If you use
the brake pedal, cruise control is cancelled.
Resuming the preset speed
If the preset speed is cancelled by pulling the control lever or by
depressing the brake pedal, pushing the lever up in the "RES/ACC"
direction will restore the speed set prior to cancellation. However,
once the vehicle speed falls below about 40 km/h (25 mph), the
preset speed will not be resumed.
180
Cruise control failure warning
If the "CRUISE" indicator light in the instrument cluster flashes
when using the cruise control, push the main switch to turn the
system off and then push it again to turn it on.
If any of the following conditions then occurs, there is some trouble
in the cruise control system.
D The indicator light does not come on.
D The indicator light flashes again.
D The indicator light goes out after it comes on.
If this is the case, contact your Lexus dealer and have your Lexus
inspected.