Karim,

I have sent you photos of the Key front and back. The key is a MB key in a gray case which is KR55 and is common to other MB cars. All the electronic modules are MB with MB "A .... .... .... " part numbers. While these all carry MB part numbers some of the modules are unique to the crossfire becasue of the Staggered wheels 19 and 18 inch wheels. The wheel tire combination resulted in different coding for ABS, ESP, and possibly gear ratios differences from the R170 SLK. Mechanically and electronically our cars appear to be identical to the R170 SLK320. We have the same CAN BUS and all the same modules but with some different coding inside them.