Try checking all fuses
If there are no blown fuses in your Lincoln ls, then there could be a short in the wires causing your power locks to not work.
Check your fuses.
Check the fuses.
Mirrors Locks (MIR LKS). The fuse is for the power mirrors and power locks on the vehicle.
check the circuit braeker
Check the fuses. You will find what each fuse does within your owners manual.
burnt fuses
Check the fuse panel and look for any blown fuses.
Try checking the fuses.
Cause the window motor is out
Start with checking for blown fuses.