Mercedes-Benz W221 is Motorola EIS, about all key lost, vvdi mb bga tool key programmer cannot support online calculation get password directly. Password calculation can get key password through EIS and but need at least one working key (online), incl. W164, W164 (2009-), W166 W197 W212 W218 W246, W169 W209 W211, W172 W204 W207, W216, W221, W639 (2009-)
To add new keys to W221 when it lost all keys, you can do like this:
remove W221 EIS,
get eeprom by programmer (such as VVDI PROG),
then load eeprom to VVDI MB TOOL to prepare key file,
write key and insert to EIS for key learn.
In W221, there was only “DUSSELDORF” on the MCU (“DUSSELDORF”—-NEC chip)
Maybe only parts of W221 is Motorola EIS, you can see the attachment photo its Motorola EIS.
anyway, about W211 all key lost you can change a new EIS do you work.
read all key lost EIS data, then write to new EIS (enter password at random/as you want) then prepare key file with the enter password.
Note: VVDI MB BGA Tool v2.1.7 now can only program new keys to Mercedes W212 W246 W204 W207 W216 W164 when they lost all keys.
How to Program Mercedes W221 All keys lost with VVDI MB tool step by step?
Step 1: Read original EIS data
Read EIS data without reading password and save data to new file with VIN number.
Read EIS data
Save EIS data
Save to desktop folder named as the VIN number
Step 2: Renew EIS
Click on Read EIS data
VIN is not activated
Load EIS data
VIN in activated, click on Write
Confirm Write VIN operation
Write VIN success
Write EIS data
Writing data, please wait
Write data success
Select OBD and Read EIS data
Reading EIS data success. EIS is normal
Step 3: Prepare Key
Select Prepare Key File and click on Yes
Step 4: Move NEC of remote and put in adapter VVDI NEC and renew
Click on Renew
Step 5: Attach NEC to PCB and program key by IR
Load key file
Reading data success.
Program MB W221 all keys lost success.
W212 W246 W204 W207 W216 W164 all key lost solutions: