Securilock Flashing still running
 

2010 F350 6.4L King Ranch So not sure what to do here. When I pull keys out of ignition, securilock or anti lock dash light flashes three maybe four times. When I lock doors then return little later, information reads for me to put keys in and turn on. Alarm sometimes sounds in middle of night. Any way of fixing this or will I need to have it flashed. Even using key pad it does it. Thanks for the help.