Hi guys, been a while since I was on here, but I've just got back into BMW ownership! I've got a lovely 51 plate 320d with 105k on it. Love the car but it has come with a few niggles. The most annoying being the dreaded key fob issue! I only have 1 remote key and 1 normal key, and someone has tried to fix the remote one by cutting it open and replacing the rechargeable battery with a standard one. I don't know if they tried reprogamming it or not, but needless to say it didnae work!
I've tried replacing it with a new rechargeable battery but with no success.
So my question is, can I buy a second hand key off of ebay and fit the circuit board to my blade then reprogram it so that it'll work in my car?
I've looked over a few forums but can't find a definitive answer.
Thanks in advance.
P.S. The drivers door central locking actuator doesn't work either, would that make a difference to trying to reprogram the key I have?