Power Locks Won't Lock When Placed in Drive

[Raptor]

I have an 03 Expedition XLT. When I place the vehicle in drive, the door locks should automatically lock at a forward speed of about 5 to 7 MPH. This has not happened for a few years now. Through this forum I figure with all the expertice out there could be a solution. Any Ideas?

 

[GAINMOB]

check your settings...i think you can switch it on/off

 

[Slick773]

Instructions are in owners manual, I just did mine on 07 EB. Super Easy!!!