Mercedes Benz W166 all keys lost and program new keys, CGDI MB Pro is good choice, here share user manual with pictures.
Click on “Read EIS data” then “Computer password”
Click on “Copy key without key” then “Collect Data”.
Prepare to collect data, please wait…
Please insert the simulation key into the lock in 30 seconds.
CGDI MB programmer is collecting data.
Data acquisition succeed, save it by default.
Click on “Upload data” then open the data you saved.
Upload data successfully.
Click on “Query password”
Wait for 2 minutes, query password succeed.
Click on “Lock (EIS)” then CGDI MB display password, copy it.
Click on “Paste password”
To be updated……