My theft warning siren was going off independently of the alarm system. Here is how to remove it.
The siren is behind the right side boot lining. Start by pulling it.
The siren is installed on the back side of that panel with the white plug.
Removal is as follows:
- Remove the 2 gold nuts (10mm)
- Pull out the siren module
- Unclip the connector
Cable tie the connector in a position so it won’t rattle.
Reinstall the boot liner.
Removing the siren doesn’t seem to cause any issues; both the alarm and central locking still work.