Date registered: Nov 2015
Vehicle: A Class W168 2000 A170 CDI
Mentioned: 0 Post(s)
Quoted: 4 Post(s)
The transponder on these Mercedes keys are what is called "rolling code" type.
Every time the ECU and key transponder communicate a new code is generated and comes into play.
As a result it renders the copies useless. Well I have a copy but just to open the door in an emergency. It surely don't do nothing in the ignition as you probably already notice.
So authorized dealer is the answer. ;-)