The Bluetooth ULF made for pre-2004's (manufactured by Visteon) had the voice recognition function built-in to the module itself.

The Bluetooth ULF made for post-2004's (manufactured by Motorola) does not have the voice recognition function built-in and requires a separate stand-alone VR module if you want this functionality. These BT modules, though, also have Assist functionality.

The 2004's are the odd-ball here. They came with the Assist/BT module (manufactured by Motorola) but the BT function doesn't work. You can either install the Visteon module (which gives you VR but not Assist) or the 2005 Motorola module (which gives you Assist but not VR). As noted above, on the latter you can add the stand-alone VR module to gain this capability.

My info above pertains to US spec vehicles, so if there are differences in the UK then I am not aware of them.

Hope this helps.

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