Lexus GS430 User Manual page 249

INFORMATION
In the following conditions, the system may not
function.
D The cellular phone is turned off.
D The current position is outside the communication
area.
D The cellular phone is not connected.
D The cellular phone has a low battery.
G18047
By pushing the telephone button above, you can receive
a call or hang up without taking your hands off the
steering wheel.
TOUCH SCREEN
225