Originally Posted by
CDinTTown
My 2004/63,000 mile has been having the random siren chirping problem. Today dealership told me it would be $800 to replace the siren. They said they cannot disconnect the siren due to a communication wire that leads to the motherboard and that a siren "has" to be present because of this wire. I'm thinking they don't want to mess with it? Considering taking it to a car audio place instead?
This and one other needed repair will make or break whether I let some enthusiast take the car off my hands. I'm just an everyday lady driver and not a tinkerer.

Their information was incorrect. The siren is independent of the alarm system and can be triggered by it but need not be connected. It has a logic board and reghargeable batteries inside so can trigger and sound even if the battery is connected. It is an easy repair so not sure why they might avoid doing it. Mine started doing this lately and when I removed it and opened it up I found the circuit board corroded, burnt and the batteries dead. I did not replace it.