My alarm siren has become so weak, my dog couldn't hear it, the fact that she's deaf notwithstanding. I've searched the LotusTalk Forums, looked in the owners manual, the parts manual and the Lotus Service Notes. Apparently, Lotus recommends replacing the alarm system battery once a year. The Service Notes mention that the siren is self powered and that accessing the siren requires removing the clamshell. The Parts Manual identifies the siren without mentioning a replaceable battery. Can anyone tell where the battery is located and if the replacement battery can be purchased anywhere but at a dealer? I'd rather not pull the clamshell to find out that the battery is attached to some other component. Any advice/information/recommendations will be greatly appreciated.