My 2005 S60r is having a number of weird electrical gremlins. Since last week it won't start, there aren't any lights on the dash when I turn the key and nothing changes when I turn the key but the siren goes off constantly. Nothing will make the siren stop no matter what I do, I've tried everything in the manual and tihngs people have suggested. The only thing I haven't pulled that people have mentioned is the CEM, mainly because I don't know were it is located. When I asked Ipd they said it probably needs a software update so take it to a dealer. Anyone have any idea before a go to a dealer and pay an arm and a leg to have it looked into?