AJP777

Hi everyone I have installed an aftermarket head unit after the dreaded Err3 code and being unable to find a second hand original. The problem is, now the sat nav does not work, I have connected the new unit by using a system where you unplug the amp and connect to a specially made connector which then connects to the head unit connector. The head unit works fine but I would like the Sat Nav to work, it is a bit old hat but can be useful. I have read somewhere that I need a module as the Lexus radio/cd works the Sat Nav, no radio/cd no Sat Nav. Can anybody help with the module or any other ideas. My original CD is Lexus part 13902 (86120-53040) which is apparently very hard to find!! Thanks

Can anyone give me ideas about an intermiitent rattle which seems to be coming from the roof of my IS200. I've checked around the Sun Roof and nothing seems loose, don't really want to take off the roof lining. Have not had the car long, not new, and it's the first one I have had. Everything else is great but this noise is getting on my nerves.