hi you need the phone module, bluetooth module and fibre optic loop. phone module 2W93-19K350-AA , 2W93-19K350- AD , the last letter is software revision so higher letter the better bluetooth module 3W83-14B409-AD , the last letter D the higher the better as will be lastest software and supports more phone's and lastly you need a fibre optic cable I have 3W83-14B409-AD and it works with my new sony xperia z4 fine also you need check your plug have 8 wires in it, in the armrest for the bluetooth to work, my car had the 8 wires, its a 2004 STR, but did not work I had to swap some of the wires about to get the bluetooth to work, but this is quite easy and i can supply you with instructions if required if your car it 2005 plus then there just plug and play the phone and bluetooth are plug and play if wired correct, you just reconnect your battery and the car scans for them and they will work if it does not work, you will either have a problem with the fibre optic or bluetooth connection plug being incorrectly wired you can also fit a later phone/bluetooth module, that later cars had, which is a black plastic unit that is phone and bluetooth combined, these dont come up as often, and you need to make sure it comes with the little bluetooth aerial that attaches under the parcel shelf, not sure of part number cheers joe