Acura 2008 MDX Owner's Manual page 266

Rear Entertainment System
If the system does not recognize the
password you entered, you will see
the above display. Repeat the
parental control level steps until you
enter the correct password.
260
If you enter the password correctly,
you can then change the parental
control level.
Once you correctly enter the
password, press the or
button to change the level, and
then press the ENT button to enter
your selection.
Changing the Password
The password was set to ''1111''
when the vehicle left the factory.