S80 plastic thing behind rear-view mirror

The 2004.5 S80 has a somewhat T-shaped dark plastic thing,
about an inch deep, attached to the windshield behind the
rear-view mirror. Any idea what this is for?

Jonathan Schilling

Rain Sensor

--
"*-344-*Never Forgotten"
Is for the New York City Firemen who lost their lives on September 11,2001.
The official count is 343, but there was also a volunteer who lost his life
aiding in the initial rescue efforts. And I will never forget them as long
as I live,
nor should any American.
"Mow Green"
"J. L. Schilling" <(E-Mail Removed)> wrote in message
news:(E-Mail Removed) m...
> The 2004.5 S80 has a somewhat T-shaped dark plastic thing,
> about an inch deep, attached to the windshield behind the
> rear-view mirror. Any idea what this is for?
>
> Jonathan Schilling