Thanks for the reply, I have taken out the fuse 38 and charged the battery, only to find the hazards still going off !
Will keep looking .........

Hi everyone and it's nice to make my first post on your forum. I have a 2002 S80 which I think has an alarm fault, reading the other threads it looks like it might be the siren unit that is faulty because for a while now the "alarm service required" information has shown in the dashboard. ...