Thanks for the replys...bike is still playing up.charging system is working dead on and battery holding its voltage.ride the bike to work. ..stop it and the immobiliser flashing 53 again.after work spent halfnhour turning the ignition on and off and eventually heard the fuel pump prime and bike started. Once home and turned off it refused to start again.has anyone done an immobiliser bypass or used a xxxx xxxx xxxx. Thanks