Alarms siren location

[yogui_)01]

I need to replace alarm siren, any idea where is located and how to acccess?

 

[mcbutler]

Most vehicles use the horn I believe! Does the horn work??

 

[R.E92]

This is the breakout of the parts:
https://www.realoem.com/bmw/enUS/showparts?id=LM72-EUR-03-2009-E89-BMW-Z4_35i&diagId=65_1935

From memory it's just to the right side of the radiator tucked in a plastic box, I always thought it was the air recirc sensor until looking at that diagram.