2008 Mercury Grand Marquis Q&A

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

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 -
Answer 1
CK BATTERY IN KEY FOB TO START WITH -
Answer 2
if key pad doesn't work either, probably security module fault. take to dealer to diag -