hi all i have a eb fairmont what wasworking really good till a a while ago where ibelive the immobliser has come on i hace let it sit for over 2 hours but has done nothing what can i do now

the symptoms are no fuel pump noise, starter motor got nothing, battery is good the smart lock light is off ,
the previous owner hooked up a button to start the car they reackon the smartlock system was playing up

any help would be good urgent