Honda 2016 CR-Z Owner's Manual page 223

uuBluetooth® HandsFreeLink®uHFL Menus
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To change the pairing code setting
1. Press the button.
2. Select the Settings.
3. Select Bluetooth.
4. Select Edit Pairing Code.
5. Select Fixed or Random.
1To change the pairing code setting
The default pairing code is 0000 until you change the
setting.
To create your own, select Fixed, and delete the
current code, then enter a new one.
For a randomly generated pairing code each time you
pair a phone, select Random.