Hi there, I'm new to the work of BMW an have recently bought a BMW e90 early 2008. I'm a technical engineer by trade, (not cars) and have a decent knowledge of programming. Anyway, I only have one key for my e90, it's the three button one with the key itself hidden inside the fob. I was hoping to basically just buy another key off eBay and reprogram it. I have done quite a bit of searching and the general consensus is that it can only be done by dealer.

The system recognises re-programming by locking and. BMW Remote Key Fob Shell 3 5 7 Series Z3 Z4. Key Fob Remote Shell for BMW 1 3 5 6 Series E90 E91 E92. Bsa A75 Workshop Manual - Download Free Apps.

However, could I not: Use INPA, DIS/SSS to dump the EEPROM and then use one of the cheap Chinese made key programmers to code a key? Would the key have to be blank (uncoded) or could I for example code a key that has been already coded to another vehicle?

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