I thought I posted this before but can't find it anymore, so anyway.

I installed the Dice kit into my 2004 E53 X5 yesterday, it has the latest firmware which allows me to use the wheel controls to control BT phone (i.e. press the button and keep pressing to enable voice commands, etc.)

It's working fine but when I press the button it also activates the car phone system, so I get a mix between my own phone over BT and the car phone from the speakers which makes the BT unusable.

How can I disable the car phone system to only use the BT system?