recently my remote control access to my car went out i took it to autozone for on 2008 Mercury Grand Marquis

for check of ignition,battery,everything checked out,my keypad on my door wont unlock now,the automatic door locks wont lock or open when the driver button is pushed. my windows work fine but the trunk button wont pop open the trunk either. it seems to be an electrical issue of some sort. first what is potential issue,second must it go back to the dealership for repair or is there some local facilities that can do the repair..thanks.

Asked by for the 2008 Mercury Grand Marquis