Lexus LS500 Owner's Manual page 241

Vehicle sway warning function
■
When the vehicle is swaying or
appears as if it may depart from its lane
multiple times, the warning buzzer
sounds and a message is displayed on
the multi-information display to alert
the driver.
LS500h_OM_OM50F42U_(U)
4-5. Using the driving support systems
Lane centering function
■
This function is linked with radar cruise
control and provides the required
assistance by operating the steering
wheel to keep the vehicle in its current
lane.
When radar cruise control is not oper-
ating, the lane centering function does
not operate.
If the system detects that the steering
wheel has not been operated for a
fixed amount of time or the steering
wheel is not being firmly gripped, a
warning is displayed on the multi-infor-
mation display and the function is tem-
porarily canceled.
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