Make sure your mobile bluetooth is swtiched on

Hold button down for 3 secs, turn key to stage 2 (not releasing button) hold for another 10 sec. car should go into pairing mode.

on you r mobile search for devices.

should find BMW ****

enter pass key when prompted on your phone

you should be done and your car will bleeo at you

if not go back to your phone and tell it to connect to the BMW*** device.

Good luck, took me about 10 goes to get it right