What sense does it make to have a password when you can defeat it by pressing reset? That's why I said you can't listen to the service reps.
This is out the Pioneer Manual:
Setting the anti-theft function
You can set a password for the navigation system.
If the back-up lead is cut or RESET button
is pressed after the password is set, the navigation
system prompts for the password at the
time of next boot up.
Setting the password
1 With the map displayed, press MENU
button.
2 Touch [settings] on the “Top Menuâ€.
3 Touch Area1, followed by Area2, and
then touch and hold Area3.
Area1 Area2 Area3
4 Touch [set Password].
The password setting screen appears.
5 Enter the password you want to set.
p Five to sixteen characters can be entered
for a password.
6 Touch [Done].
7 Reenter the password to confirm the
setting.
8 Touch [Done].
Password-protecting is completed.
p If you want to change the password currently
set, enter the current password and
then enter the new one.
Entering the password
On the password input screen, you must enter
the current password. If you enter the incorrect
password three times, the screen is
locked and operations with using touch panel
keys cannot be performed.
1 Enter the password.
2 Touch [Done].
The message “Antitheft is being unlocked.
Do not switch off during the process.†appears
if you can enter the correct password
and the navigation system will be unlocked.
Deleting the password
The current password can be deleted.
1 With the map displayed, press MENU
button.
2 Touch [settings] on the “Top Menuâ€.
3 Touch Area1, followed by Area2, and
then touch and hold Area3.
4 Touch [Clear password].
The password setting screen appears.
5 Enter the current password.
6 Touch [Done].
7 Touch [Yes].
The message for deletion appears and then
the current password is deleted.
Forgotten passwords
Contact the nearest authorized Pioneer Service
Station.
Other functions
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