That light does not reset by pushing it in. Do you have something in that seat like your laptop or something? This light is triggered by weight. If you have something in that seat that weighs less than, I think it is 50 lb. That light will come on. It should go off when that item is removed. This is to prevent the tragedy that happens with rear facing child seat in the front seat in the case of an accident.
Read o & m manual. Lots of good stuff in there. Lol!!!