I looked into this extensively and even wrote to the manufacturer on this. What isn't explained is that you need an EEPROM 10030A chip in the new key and you will not find that anywhere except BMW themselves! The ebay keys have a new EEPROM but your Z3 will not recognize it.Not exactly on topic but ripped this from FB.......Z3's key can be duplicated by ak90 The theory is simple.
Try keysinthepost.comCheers tony , I purchased a blank from flee bay earlier but local key cutting Bobby said no !
The cheque is in the mail and I'll be there day after you cash it!! JIMBuy my car, complete with ALL it's keys. But you have to come and fetch it.
Tony.
Don't you remember sending the address a while back?? I've had the cheque made out for months now just hadn't put a name on it. You are the first to offer up their car to get me over there!! I'm glad it was you, I like green Zeds! JIMDon't you need the address mate?.
Tony.
ps.Bring Frankie to ride shotgun. I'll get the bacon butties on.
What sense of humour are you talking about cuz Joan tells me I don't have one. She says one of the reasons she married me was my sense of humour so if you think I have one and others on forum think I have one the problem's got to be her. Wait till she gets home and I show her this!! And you know what comes next, right?Jim, we are going to have to meet up one day, with your sense of humour you could be my brother man. Just remember it is Oxford Green( the posh one) not Boston Green. Sorry Frankie.
Tony.
Thanks for the support Brother!! See you in the afterlife I guess!Sorry mate you're outta luck, my mum's name was Joan, God bless her, so whatever you dear lady says, goes.
Tony.