Here is a customer solution:

how to add new keys to Mercedes-Benz w215 when all keys lost

Done by Xhorse tools - VVDI Prog and VVDI MB Tool

How-to’s:

Step 1: Take out the chip from EIS and solder

Step 2: VVDI-Prog: read data

Step 3: VVDI MB - EIS Tools: Load and save EIS data

Step 4: VVDI MB - Prepare key file: Load and save EIS data

Step 5: VVDI MB - Read Write Key: Identify key

Step 6: Solder the chip to the EIS

Step 7: Test the new key and confirm its functionality

In detail...

Step 1: Take out the chip from EIS and solder

Step 2: VVDI-Prog: read data

The chip is: MC68H05X32 (ID69J)

Step 3: VVDI MB - EIS Tools: Load and save EIS data

Step 4: VVDI MB - Prepare key file: Load and save EIS data

- Load EIS file with password

Support motorola eeprom dump

- select key position for key file (here:key 7, key 8)

Select key file format (here: v51)

Press button prepare key file

Step 5: VVDI MB - Read Write Key: Identify key

Identify key - load key file - write key - read key (to check if data is written to the new key successfully)

Step 6: Solder the chip to the EIS

Step 7: Test the new key and confirm its functionality

Done!

Mercedes W215 all keys lost: add key with VVDI Prog + VVDI MB