Hi couple of weeks ago 3 cars parked next to each other alarms started to sound,all three fobs would not turn them off,eventually other 2 stopped an reset but my s40 would not stop,drove it home with alarm going off randomly,disconnected battery to stop alarm and now when i put battery back on it just goes off and car wont start,is there any way i can disable the alarm(its a standard factory fitted alarm)the fob will not do anything have put new batterys in etc. is there a sequence to reprogramme the alarm with the fob or is it a dealer only fix? please help!!!!!!!!!!