If I recall my settings, I can open my door up to 150 ft away (in 25ft or 50ft increments I think), but auto close is at 20 feet. I usually wait to ensure it closes before driving off. A few times it hasn't closed, so I just wait now. I have also enabled chime on open/close so I know the signal was sent. I will probably turn that off soon, once I trust the system is working as it should.