Car is a 03 TL-S. I notice there is a hissing sound that occurs evern minute or so, and lasts for about 5 seconds. Seems to be coming from the front passenger side and sounds like air bleeding. What might it be?

 

You're posting in the CL forum...

Also, you might try to be more specific about the sound over there. Good luck!

 

Yeah CL forum but close enough. I have a posting on the TL forum too. My thinking is it's the climate control. No biggie, a little more audible than I expected.

 

its your turbo

 

Your AC is on? If so it's normal.