2003 Expo Dash Light Gremlins

I have an '03 Expo and the Door Ajar light stays on all the time and occassional the door chime will sound continually (yes all doors are closed). I have sprayed WD-40 on the door locks and that seems to help for awhile with the chime, but the light is always on.

Next one, the windshield washer light is constantly flashing and chiming. The fluid reservoir is full and I can not find any problems with the wiring going to the sensor in the bottom of the tank.

Any suggestions or ideas, thanks

mu 03 had the same door ajar issue, took it in to get something done to it, and they took all the switches out and cleaned them. been over a year and not a problem