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Message: <blockquote data-quote="jarance" data-source="post: 443122" data-attributes="member: 21">Alex, I think you are gonna to wait for a long time.If I am not mistaken, the E46 key have a continuous changing code for the remote operation. You cannot copy the code and transfer it to another key. It would not work because it keep on changing. It unlike your house autogate where the coding is FIXED. That is why sometime, your spare key does not work when you dont use it for some time.The frequency of the key transmission is fixed. You can read it but you cannot change it. If your locksmith order the wrong key, it is not going to work. The key can be used to start the car because the starting of the car is control by EWS with transponder embedded in the key.The opening and closing of the door is coded by the another circuit in the key and is control by the GM5 module.Both GM5 and EWS module are link and worked together via K & L-line communication.btw, how much was he charging to duplicate the spare key?</blockquote>