I have tried searching for this answer but could not find anything helpful. I have a new 04' Z with a build date of March 2004. Above my rear window there is a small "nub", which I assume is an antenna. Is this a satellite antenna for XM radio of Nav system? I have a base model. Thanks!

 

I think that nub shoots out the window cleaning fluid. I could be wrong.

 

that "nub" is exactly what fblue said, the windshield washer. the xm antenna is a ugly pos that is the size of a credit card and thick

 

OK thanks. I will have to check it out later. I wish it was an XM antenna.