CGDI ELV Emulator Renew ESL for Benz 204 207 212 with CGDI MB Benz key programmer.
Most W204 W207 W212 ESL will be damaged with EIS. In this case, there are two possible reasons and solutions:
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.