Originally Posted by Gary333

Here are my symptoms:
Crossfire will start and then immediately die. When I try starting it again it will not start and it just keeps turning over. I’m getting no fault codes. The car has a new battery. It has both keys and will unlock remotely. Tried a different RCM module from an SLK but the part number ended in 205 rather than 305 . When I tried starting the Crossfire I got nothing and just the electric fan coming on. When I tried my Crossfire RCM in the SLK it had the same symptoms as my Crossfire. Deeply frustrated. Should I buy a new RCM? No one wants to work at it and the local Mercedes specialists said it’s not a Mercedes! I have had trouble free miles up until now. If the RCM would fix it then that would be great but I don’t want to buy it and then discover it could be the SKREEM or something else. Help please!