Mercedes W204 W207 W212 ELV repair using CGDI MB

CGDI MB tool plus ELV repair adapter can perform Mercedes W204 W207 W212 ELV repair easily without removing any chip etc. This post will show the whole procedure.


Plug CGDI MB Mercedes Benz key programmer via OBD to detect if the ELV is ok or not, if it is ok, then it supports OBD repair.

Part 1:

Plug to the Mercedes car via OBD, open CGDI MB software, click on “Read ELV data”.

Please connect the clip on the OBD cable to the Kline on the ELV plug.

Read out ELV basic info and key info successfully.

The ELV is detected ok and you can repair.

Obtain the ELV erased password.

Erase the ELV successfully.

Read again and display the related info after being erased.

Part 2: Collect and calculate the IMMO password.

Read out the EIS info.

Enter “Password calculation”, select “Copy key with key” (If all keys lost, choose “Copy key without key”).

Select “Other keys” as default, click on “Ok”.

The collecting process will not be displayed here, just follow the message until you get the immo password.

Copy the key password and paste it to the EIS.

Save the EIS data (Please save it into the default folder name)

Erase password is calculated successfully.

Click on “Erase EIS”, the message says please plug the simulation key into EIS within 30 seconds.

Real pictures shown as bellow.

Erase the EIS successfully.

Again read EIS related info.

Load the EIS data (saved in the former steps.)

Click on “Write”.

Please insert the simulation key into the EIS in 30 seconds.

Operation real pictures.

Write EIS data successfully.

Again read out the EIS data.

Click on “Synchronize W204 ELV”, after it succeeds, insert the key into EIS to active.

Activation succeed, ready to use.

CGDI MB + ELV Repair Adapter for sale