https://www.g28carkeys.co.uk/b....mw-car-key-replaceme
Automotive Locksmith Key Programming Modern cars need some kind of key programming. Depending on the car's maker and model, the process could be as simple as onboard programming using a spare working key or as complex as OBD2 or EEPROM programming. Most US and Asian automobile manufacturers have programming protocols that they share with auto tool makers so that they can develop hardware and software for locksmiths in the automotive industry to use. Transponder Chips Most newer cars use what are called transponder chips in