The Basics of Judaism: Basic Values and Morality: Honoring Parents:
Must a parent be honored even if he behaves improperly?
Parents are not allowed to abuse their children (Shulchan Aruch
Yoreh Deah 240:19-20), but they must be honored even if they behave
offensively (240:3) unless their behavior becomes unbearable (240:10).
A child is allowed to stop a parent from doing damage to him/her, and
can bring the parent to court for doing it (240:8). A child doesn't
have to obey if told by a parent to do something wrong (240:15), and
if a parent is doing something wrong, the child should point it out
Ask a follow-up question