I have a '05 X-Type Sport 3.0 with pretty much every option but bluetooth. Was looking to install and saw this (link below and not a virus ha) How do I know if I have this so called PSE? I have all the buttons on the stearing wheel and such. Any idea? Don't know if if the ebay listing is a good price either. I have an Iphone 4 and 4s.

Jaguar Bluetooth Module BTUM For Phone X-Type S-Type XJ8 | eBay