Hi everyone, i was trying to make a key for a 2005 mbz s class w220, i have read the mcu, 1L85D, with r270, and it showed the mileage and vin also normal, i made a key. Now the new key wont function, the old key wont function either. The original key started car no problem, the only thing is that they wanted an extra key. The eis is A2155450808. Can you guys help me????????? Thnx in advance