I have a 2006 LS 430 (Ultra) and wonder what are the two things that are stuck to my windshield? One is small rectangular and is immediately above the rearview mirror. The windshield actually has a shaded outline for it. (I think this is the rain sensor.)

The other item is much larger and is triangular (trapezoid to be exact) and sits to the passenger side of the other sensor. I'm thinking this is GPS or Sirrus or both.

I ask because I had my windshield replaced today and the tech did a poor job of reattaching them. I need to check to see what still (or doesn't) works.

Update: My wipers now turn on when I start my car. (Using Auto mode)

 

I think the one under the rear view mirror is the rain sensor. I have swiped my finger on the lower boarder of it before and the wipers will operate.

 

Rain sensors for your automatic wipers. The triangular one, I don't know... isn't the satellite receptor integrated into the antenna?

 

As someone already mentioned, the first one is for your automatic wipers. Second might be an after market XM radio receiver antenna.