Here are VVDI Benz factory engineer solution to new Mercedes Benz W221 and W204 all key lost.
I.W221 ALL KEY LOST
Q: I bought EIS W221 lock with a key from the lock from one machine. I have read the PSW. I will make a complete loss of W221 key in the future?
Describe step by step procedure
A: you have used/seconds-hand EIS with working key,you can do like this for W221 all key lost
1.read all key lost EIS data-> save EIS data
2.read used EIS data enter password,get erase password->renew used EIS.
3.load step1 EIS data to renewed EIS with password->write EIS data
4.load EIS data(with key password)->prepare key file
5.input new key to device IR reader->load key file->write
6.insert new key to EIS->EIS will learn the new key->key learn success
II. W204 ALL KEY LOST
Q: I have a w204 All key lost and i program a new EIS with VVDI MB Tool, the ignition doesn’t come on or crank, but the steering can lock and unlock. can someone guide me what to do?
A: W204 all key lost(change new EIS),refer to following steps,maybe helpful:
1.Read EIS data via obd,then Save EIS data
2.adapt ESL:Read ESL data->Get Erase Password->Renew ESL
3.Change new EIS, Load EIS data(step1)->write Key Password(enter manually and at random)->Write EIS data
4.Personalize W204 ESL
5.Load EIS data(with Key Password)->Prepare Key File
6.Input new Key to device IR reader->Load Key file->write
7.Insert new Key to EIS->EIS will learn the new key->key learn success.
You are at you own risk if you are not familiar with VVDI Benz key programmer.