2006 xc 70 alarm issue

Post by **fields 100** » 02 Nov 2015, 16:54

Hi all,
I am having an issue with a siren not sounding when alarm is set off. All other components operate normally. Should I just go ahead and try to replace it or there are some other diagnostics to run before shelling out $300.00 plus?
Thanks in advance.

Post by **oragex** » 02 Nov 2015, 17:50

Given it's a 2006, there is a chance only the battery inside the siren is toasted. I'd try removing the module, split it open, clean the circuit board and install a new battery if the board is not yet melted. The other option is to just disconnect the module and leave the car without alarm.

Post by **fields 100** » 02 Nov 2015, 17:57

Thanks so much for reply. Hopefully it IS a battery.

Post by **vtl** » 05 Nov 2015, 05:13

It is a battery. Doomed to failed design (battery leaks electrolyte over electronics). Don't buy used, they all suffer the same problem. Either new siren, or repair your own (~$12 for a new battery plus some work).

http://www.volvoxc.com/forums/showthrea ... went-south

Siren is much easier to get to through headlight. Bumper needs to come off.