Today I noticed that when I unlock my door, the dome light comes on. I don't remember this happening before, but I have a poor memory, so I don't know if I'm just remembering wrong or just never noticed before. But I've had this car for 20+ years now, so I would think I would know. And my lock/unlock buttons recently became loose, so it caused the passenger side door to make a weird sound today when I locked the door, so I was testing the lock/unlock button, which is also when I noticed the dome lights came on. So I need to know if there is a faulty locking due to the loose buttons or if this is just normal, so that I know whether I need to bring the car in immediately to the shop.