Honda Civic Owner's Manual page 237

To change the PIN to a new number:
Select the phonebook you want. The
display will change as shown above.
Enter the current PIN for this
phonebook.
The display will change as shown
above.
Enter the new 4-digit PIN number.
You will be asked to re-enter the PIN
for verification.
Bluetooth HandsFreeLink
To remove a PIN:
Select '' ,'' then select
PIN number
'' Do not use PIN '' after you enter
the current PIN.
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