Just bought a used ML320 2001, the dealer ordered another key for me, I picked it up today and it starts the car but none of the buttons work. I tried the hold down one button and push the other 5 times but still no luck. The dealer said it may just work or he would have to take care of it for a 30 minute visit, no charge. So if anyone can help me avoid the inconvienience of another dealer trip, please let me know, otherwise I guess its off to the dealer I go....

John

2001 ML 320
1992 400E

 

mb has to put the key on their computer to sycn the system about one hour labor charge