Does the siren work without internal battery? then I do not need new battery again after 6-years.
Do I need clear fault code with computer with new siren?
How to test, when must the siren make noise?
found this info:
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Top tip: if your lights and sunroof aren't working,
locking and unlocking the car via your fob or master lock/unlock button THREE times
will reset the module and you'll have working lights and sunroof.
http://forums.swedespeed.com/showthread ... ost2302844
edit:
found MY 2005 fuse under steering wheel nr8 and it works Without Internal Battery also
https://www.matthewsvolvosite.com/forums/viewtopic.php?p=313947#p313947






