Mercury Grand Marquis door lock not working fixed / Ford / Lincoln

[@a.h.h9647]

thanks lot you saved my day I have the same issue and thought it is weak ground or wiring but I found exactly the same as you did then I copy cat what you have done and now working well

[@LPArabia]

Thank you for the thorough diagnostic guide. I will try tomorrow and let you know!

[@davidsheward2113]

The question I have is : Do the three wires you show at bottom of the door (green & two white with green & blue traces) come up the the top control panel where the lock/unlock buttons are? If they do it seems it would be much easier to do this modafacation there as I won't have to remove the door pannel. At first it was only my passanger side door that would not lock or unlock. Now it is both doors and neither the key fobe or outside numeric pannel will lock/unlock my doors. Only way I can get in the car is by unlocking the drivers door with the key. I can actually hear the sylonoid "click" but the doors do not lock or unlock on either front door.

[@khmerohio]

@@davidsheward2113 sounds like your actuator is weak (not bad yet) but weak where it doesnt have enough stength to pull and push. i will say you need an actuator

[@davidsheward2113]

@@khmerohio Thanks...makes sence. My first thought was maybe cleaning and lubracating them might help? After seeing your video I am now thinking checking voltage at those connections not a bad idea. They don't seem to "sound" any different than they did when system worked. Never noticed that there isn't a key lock on the passanger side door until this happened. This could be a proplem with winter comming as this is my winter driver. Would be a PIA to have to call a locksmith to get in the car this winter! If the wires are on the door panel controls your fix would be easy so will look there also as a fused "backup". Thanks for the info and fast reply.

[@davidsheward2113]

FYI: Another video I found on this proplem! This would explain why mine "sounds" the same as it did when they were working. Pretty easy to see if rivot is no longer there or if the assembly has come loose. Feeling confident I will be able to fix this tomorrow! Hope you don't mind me sharing it here. kzbin.info/www/bejne/p2fGiZuHipWrfa8si=EdmtpMF3KPn3xocN