Keypad wont work

[97Exec]

I have 2007 Town Car Exec. The keypad does not illuminate , when the factory passcode is entered nothing happens or when 7/8 and 9/0 are pressed the doors wont lock. The interior lights DO come on when the buttons are pressed. The key also does not work in the door lock, its like something is stuck in it. Is this problem Related the keypad not working?

The keypad on my 97 does not illuminate but it still works properly

any ideas?

PS i have to remote fobs and they operate the locks

Thanks again, Ian

 

[Town]

Hi Ian,

The door lock key operation is a mechanical connection to the latch linkage operated by the electrical lock actuator, so there is no electrical connection to the keypad. Since the key fobs can lock and unlock the doors the lock mechanism seems OK. Sounds like a key is broken off inside the lock and preventing insertion of your key. You can see the exploded view of your car's locking mechanism in the link in the following paragraph and how it is attached so you can remove the lock cylinder and have a better chance of removing the broken key or whatever.

The keypad is connected to the Driver Door Module (DDM) by wires and they could be corroded from water penetration causing a bad connection to the DDM. You would need to remove the driver door trim panel to check the connections. We have a procedure that shows how to remove the door panel on a 2005 Town Car (same as 2007 model) in our Lincoln Tech forum here: http://lincolnforums.com/forums/threads/10480-Town-Car-door-panel-removal see post #3 for the pdf version. That document also shows the lock cylinder and how it is attached to the door handle for removal and the latch for unlocking. If all is well with the electrical connections on the keypad and the DDM located forward of the keypad in the driver door (3 electrical connectors) then check the functions of the DDM:

1. Memory seats, outside mirrors and adjustable pedals settings are in the DDM (using the SET 1 or 2 buttons) and sent to the DSM (Driver Seat Module) to execute;
2. Seat easy-out feature uses memory positions in DDM and executes them through the DSM based upon key in ignition switch read by the LCM (Lighting Control Module);
3. Trunk lid release and power opening module are activated by DDM from the switch;
4. DDM controls the door locks and remote keyless entry;
5. DDM controls the door ajar switches to communicate to LCM;

So are any of those functions not working that may suggest DDM failure?

Attached are procedures for replacing the DDM and the keypad which will help locating them and removal to check etc.

Good luck.

 

[97Exec]

I do not have a Memory 1 or 2 or the easy out seat option on this car. All the other things the DDM controls seem to work properly (trunk lid,door jar and keyless fob entry). I will check out the connections on the DDM and take the lock cylinder out to get a closer look. Thanks again.