Dodge 2016 Grand Caravan Owner's Manual page 441

UNDERSTANDING YOUR INSTRUMENT PANEL 439
To play all discs without requiring a password, set the
DVD player's rating to Level 8. Setting the rating to Level
1 always requires the password to play any DVD disc.
Not all DVD discs encode a Rating, so it is still possible
that discs designed for adult audiences can still play
without requiring a password.
4
The default rating is Level 8 (play all discs without a
password) and the default password is 0000.
DVD Password Entry