Hi guys, i have a R reg Disco, when i try and start my Disco, the engine turns over once and then clicks like the battery is flat and then turns over once and clicks again, it keeps doing this. Also the immobiliser box on the passenger side footwell clicks very fast with the immobiliser light flashing on the dash. New 70ah battery fitted, another immobliser box fitted, tried to reset by code with door lock but still the same. Any ideas please? Many thanks