Hi Johnz, I am reposting the programming instructions I found in the hopes that they can get you out of your jam - these instructions are copied from programcarremotes.com (the link goes to the specific page for BMW 3 series. They posted several different methods - I hope one of them works for you!
Try locking and unlocking the car with the key 3 times slowly ,other than that i have no idea ?? another trick is to disconnect battery and join the cables together for a few minutes to discharge any capacitors that may be holding a charge in the computer..Only other thing i can think of is the main dealers who have the right connectors and software to re set it all .sorry i havent been of any help
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