Immobiliser problem

Hi I own a freelander 2 and a few days ago my battery went flat, so I disconnected it, charged it up and reconnected it. Then when I pushed my keys into the dash and hit the start button everything cut off as if the battery was dead, now I know that was the immobiliser not letting my key start the engine, has anyone had this problem before or does anyone know how to fix it? HELP!

Errr, why not introduce your self here then move on to the Freelander forum and ask the question there?



Sent from my iPad Air on a train