hi
generic code reader will only read engine codes, so no use, only Jaguar IDS/SDD software will communicate with epb and central locking modules
make sure your battery fully charged first, put it on charge overnight, low battery cause lots of issues with epb
if it still does it, its going to be something like faulty epb motor, faulty module if boots damp, stiff caliper cables or stiff calipers
central locking, first check the button click on the remotes, sometime the micro switch inside the remote fail and operate on there own or even stay stuck on
if there ok, its going be a sticky door lock, wd40 inside them often cures them
cheers
Joe
these two clip have some good info on fault find epb problems
clip 1
clip 2