Lexus 2014 LX570 Owner's Manual page 660

3-5. Using the hands-free system (for cellular phone)
Deleting call history
The call history can be deleted. For PBAP compatible phones, delete the
call history after setting "Automatically Download Call History" to "Off".
(P. 648)
Display the "Phonebook Settings" screen. (P. 646)
STEP 1
Touch "Delete Call History" on the "Phonebook Settings" screen.
STEP 2
STEP 3
STEP 4
Touch "Delete". A confirmation message will be displayed. If
STEP 5
everything is correct, touch "Yes".
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LX570_OM_OM60L21U_(U)
Choose the desired history to
delete.
Choose the data to delete.
You can select multiple data and
delete them at the same time.
To delete all data, touch "Select
All".