We have done a W211 all keys lost with xtool x100 pad3 in 3 minutes. Today we did All Keys Lost on Bench on a Mercedes W212 EIS Success with the xtool pad 3 and M821 adapter.
*M821 adapter cannot be used with x100 pad/pad2.
x100 pad3 will show you wiring diagram
Go to Immobilizer- Infrared key system- Key programming- All keys lost-W212
Follow the steps below to program key
1. Read EIS information
2. Read password from EIS
3. Genereae key file
4. Write the data to the new key
Check wiring diagram
Select Operation on bench