Lexus LS600hL Owner's Manual page 646

646
5-6. Using the hands-free phone system (for cellular phone)
Setting the speed dials
Registering the speed dial
■
You can register the desired phone number from the phonebook. Up to
18 numbers per phone can be registered.
Display the "Phonebook Settings" screen. (P. 635)
1
Select "Manage Speed Dials" on the "Phonebook Settings" screen.
2
Select "New".
3
Choose the data to register.
4
LS600hL_U(OM50D26U)