haven't seen this problem before - 1993 lincoln door locks.

symptom - none of the inside door lock switches will work. but the keypad on the outside is operational and will lock and unlock all the doors.
all four door locks are operational.
is there an relay that controls the door locks from the inside.
knowledge is power - growing old is mandatory - growing wise is optional "Many more men die with prostate cancer than of it. Growing old is invariably fatal. Prostate cancer is only sometimes so." http://community.webtv.net/PALMER_ENT/doc

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