Many thanks to those who replied. I bit the bullet and bought a new siren and installed it. All works well and recycling the door openers reset the codes. I did follow the advice of a mechanic friend and reattached the inner fender liner with sheet metal screws rather than rivets so it can be easily...

I am a new member of the board and I have a 2004 Volvo S60. I got a warning that I needed alarm service and the battery failed. A former Volvo tech replaced the battery and the starter, which he said failed because the battery failed. He checked the electrical system and said the alarm was fine. The...