Most W204 W207 W212 ESL will damage with EIS. In this case, there are two possible reasons and solution:
ESL motor is damaged and need to replace a new motor
NEC chip is locked, theoretically it can be unlock, actually it needs to replace new ESL.
CGDI MB ELV Emulator is newly released adapter by CGDI Company, which can Renew ESL for Benz 204 207 212, work with CGDI MB Benz key programmer, can do the same function with Xhorse ELV Emulator with cheaper price.