Immobiliser. Intermittent as hell! Any ideas
 

Hi,

01 WRX UK spec

As per the title the immobliser is such a pain in the ass.

Sometimes works with a few presses on keyfob. Other times hundreds of presses of the button, ignition on and off and general messing with door locks. I disconnected the alarm sounder as it was always going off with this problem. Making it pretty much undrivable.

Batteries in key fob as fine.

Any ideas please?

Cheers