my ICS (2000 2.5 Sportronic, no satnav/phone) intermittently does not work, not just the display but the controls. Comes up with messages like "Bootsector AR 3.1"... apart from another much longer one. Its computer code, which does not go away, sometimes with ignition off! Recently been much worse, its not worked for days now, although I can turn off ventilation. Should I risk a battery disconnection (and touch live/neutral leads off battery?) Any other suggestions, I have trawled AO for two hours now, no simialr probs reported.