Does anyone know the location of the HVAC module? Mine was replaced during the 530 update but is now has intermittent communications with the CIU. The CIU HVAC buttons stop working randomally. Just wanted to check the connections before I take the long drive back to the CSP. If anyone has a picture of the unit it would be helpful. I should have kept my old one as a paperweight so I would know what it looked like.