Lexus GS 450h 2008 Owner's Manual page 348

3-4. Using the hands-free system (for cellular phone)
■
Setting the security code to default
Press
STEP 1
Touch
STEP 2
Touch
STEP 3
Touch
STEP 4
Touch
STEP 5
Input the security code on the "Security Code" screen, then
STEP 6
touch
A confirmation message will appear. If everything is correct,
STEP 7
touch
346
.
on the "Information" screen.
on the "Telephone" screen.
on the "Settings" screen.
on the "Phone Book Lock" screen.
.
.