VVDI MB BGA feedback on Mercedes W212 All Keys Lost

Yesterday try to replaced EIS in W212 with other used one by using Mercedes VVDI MB BGA Tool key programmer, not exactly the same part number, but with help of EPC was replaceable.

Original EIS + 1 key functional (original EIS have some malfuctionals, sometime ok, sometime not, but all keys data readable yet)

calculation key password online, get erase password success - all data saved

other used one EIS from scrapyard, no any keys, then through step: W212 all key lost to get key password, get erase password - all success
then renew this EIS with all valid passwords - success

read all EIS data from orig part and as first write VIN, then write all key data ( the process is almost the same as when teaching ELV or Emulator unit to W204)
use orig key and NEW EIS is success activated

all work with both EIS are on the table, without car !!!

put new(used) EIS back to the car and need little time wait for key recalculating to car, then turn to first ignition position and again wait for recalculating....
at end turn to 2nd ignition lights OK, again wait for recalculating in ECU, after message away try turn key to start - car start, all okey
remote lock/unlock work, no any problems...

all work was on W212 from 2009 year with ELV steering locking unit via VVDI MB Tool. 

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