Long story short, inherited a bunch of crappy vehicles from the unit we replaced in Iraq and all the radios are locked. This is the info for the one I have.

Serial: M016801
Part #: 1L2F-18K876-DD

Ron, March 2011

Ron
code 2096 or for visteon code 4223

Code Entry as Follows:
Switch Radio On - Display Shows
CODE with " - - - - " flashing
Press preset " 1 " repeatedly for 1st Digit
Press preset " 2 " repeatedly for 2nd Digit
Press preset " 3 " repeatedly for 3rd Digit
Press preset " 4 " repeatedly for 4th Digit
If the correct code number is now shown
Press preset " 5 " to Enter

hay88, March 2011