I bought my 1998 ML320 last summer and absolutely love it. Last week both keys simply quit working. The engine turns over but quits immediately. I am told Mercedes will only issue 8 keys to each vehicle and mine are the last two. If I want to drive my car I must install a complete new ignition system (approx. $1900). This is suppose to be a safety feature....can anyone give me any insight as to what I could do? In my opinion it is a manufacturers defect, and I cannot order another key. I have called the 800# and they said they are sorry but all 8 keys are already used up (I got the last 2). HELP!