why wont my doors unlock and trunk unlockw/remote could it be a modulator on 2008 Mercury Grand Marquis

the door keypad same way wont work,have to use key also on the turnk to open. checked fuses underhood and inside some were replaced but still having same problem

by in Cedar Hill, TX on August 26, 2013
2 answers
ANSWER by on August 26, 2013
CK BATTERY IN KEY FOB TO START WITH
ANSWER by on August 26, 2013
if key pad doesn't work either, probably security module fault. take to dealer to diag