Dash light showing car door open

[Ret]

Today I noticed the dash light indicating either the door or trunk was open. I drive a convertible so got out checked the two doors by opening and closing and same with the trunk. The light never went out until turning the car off. Is that a fuse issue?

 

[rocknrod]

 

[pass1over]

maybe a bad sensor on 1 of the doors or trunk? My aftermarket head unit visually displays what's open ... driver door/pass door/trunk/hood. The data is there for you to find out which one it thinks is open, just don't know how you can access it

 

[JC SSP]

On my 2003 Ford Taurus the door had a sensor that gets corroded with road grim, dust, dirt… I would spray WD-40 in both locking laches and the light would go off for many years. Not sure if the mustang has the same set up.

 

[86GT351]

Get the vehicle scanned with a professional scanner. Might show a specific door code.

 

[Ret]

It's been pouring down rain here, a lot, so today between storms finally got to try out the ideas you guys submitted. It's fixed. Definitely not the fuse, sprayed into the area recommended and tried the doors. Light out, Thanks everyone for the advise.