Ok guys i have a s60 2001 20t 7 months ago i experienced the dreaded alarm triggered message i would lock the doors and randamly lights would start flashing when i unlock the car it would say alarm triggered one thing i did notice when activating the alarm was the faintest audible sound of the alarm and i mean faint i removed the siren using threads from this site i wont bore you with removal instruction wot i will say is remove fuse position 38 instead of disconnecting battery. you don,t need to drill out round head bolt that holds siren bracket in place it is a threaded bolt a pair of mole grips does the job. the siren is a sealed unit i cut with a hacksaw around the glued joint were black meets grey once inside i noticed battery had leaked over pcb removed old batteries and pcb i cleaned this with contact cleaner harness to batteries no good disposed of i desolded battery harness connector from board as this was damaged to hard to clean i solded new wires straight onto board .I live in the uk i looked for batteries replacement for the old one seem expensive so i went to jessops the camera shop and got six AA rechargable Ni-MH 1.2 v batteries £8 this is equal to 7.2 v or there abouts these would not fit into the siren casing so i glued them onto the outside of the siren case. Drilled a hole for wires i linked the batteries together used hot glue to seal them also cable tied for extra holding to case replaced unit and guess wot it works

 

That's definitely a smart and very cheap solution! How did you mount the battery pack? It could be placed in an easy to access area for future replacement.

I hope the board hasn't been damaged beyond repair on mine...

 

I mounted battery pack on the outside of the case drilled 2 holes for ties to go round and glued i also monipulated ally case for extra holding the advantage of batts being on the outside are no leaks inside and replacement relatively easy i think if someone spent enough time you could make a quick release version

 

where would I find the box of the alarm or siren,the one that you change the battery?
Anyway smart move man

 

Here's how to remove it on an S80. Your car should be similar. http://www.matthewsvolvosite.com/for...p?f=11&t=17479

 

Hi ya my s60 is a british modal the alarm is behind the drivers side wheel arch you will have to jack up that side of car not to high wheel stil in contact with floor drill out rivets pull back plastic guard you will see alarm in a bracket up the top good luck

 

thanks alot guys that really helps now i just have to find some time to put it in application.
but anyway after i removed the fuse i left the car like that for one night without fuse n now the alarm doesn`t sound anymore but in the message its saying that the alarm needs serviced so should i change the battery of the alarm r take it to a dealer?