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.
New CAS Plug work together with VVDI 2 to support more BMW cars
1. It connects to device OBDII port,
2. It is used for EWS, EWS 2, 7 Series CAS1/CAS2 plug and CAS3/CAS3+ plug.
3. By using CAS Plug, you can connect CAN LINE manually, support 12V.