Door ajar light stays on even when car is off.

My door ajar light stays on even when car is off. Also the door ajar chime goes off CONSISTENTLY CONSTANTLY it never stops BUT only when driving !! Please help. I have pressed the sensor on all doors. The driver door is the only door that when pressed the car ajar light doesnt go off. Does this mean the switch is bad? Anything else to try before replacing sensor? Also a diagram of where it is at would be appreciated.

Thank you so much