Lexus GS 450h2011 Manual page 382

3-4. Using the hands-free system (for cellular phone)
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STEP 5
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STEP 6
If you select a switch you registered before, a confirmation mes-
STEP 7
sage will be displayed. If you want to replace it, touch "Yes".
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GS_HV_U (OM30C14U)
June 2, 2010 10:30 am
Touch the desired phone number.
Touch the switch you want to regis-
ter the number in.