trackergb

Hi am new to the forum having just bought a (2010) C5 only had it a few days .my problem is i cannot get i galaxy s3 to pair with the car .citreon is showing on my phone ,the car show`s my phone ,i select yes i put in code (1234 i think this is correct ) press ok then i get error then on bluetooth connection ,then my phone has failed to connect. can you`s help or direct me if it is covered already on the forum . ps i tried code 0000