I was having issues with the keys of my 307, firstly i lost the guts of the 'good' key leaving me with one that wasn't working remotely and would not resync with the car after changing the fob battery. Meanwhile the starter on the car went, so I got that replaced. Then I started getting a 'bong' on start up and key not working, car locking me in, etc. So I thought I better get key problem sorted. When I brought to one of those autolock they said it wasn't trasmitting, fine-problem solved, I thought. One fixed key and one basic key and a good few quid later and they say the car won't accept the key, so I am in the exact same position with the key acting weird, bong sound, losing radio memory. Reding on here I figure its the BSI corrupted, tried reset, no dice. the autokey place want to take it in to diagnose the problem but I am loathe to give them anymore money. Anyone ? Should I just get someone to clone the BSI from the same model, would that work ?