TOYOTA 2010 Matrix - Manual (Page 249)

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3-3. Using the hands-free phone system (for cellular phone)
■ Initialization
● The following data in the system can be initialized:
• Phone book
• Outgoing and incoming call history
• Speed dials
• Registered cellular phone data
• Security code
● Once the initialization has been completed, the data cannot be restored
to its original state.
■ When the phone book is locked
The following functions cannot be used:
● Dialing by inputting a name
● Speed dialing
● Dialing a number stored in the call history memory
● Using the phone book