In the later compressor M111 2.3L engined cars the main engine ECU " talks " to the ignition key unit and possibly to the 5 speed autobox ECU. Without the presence of these units and their associated wiring I'm not sure the engine will run. There may well be ways of fooling the main engine ECU with suitable "dummy" inputs" but how exactly you would go about that I don't know. Your problem is that you are trying to mate up components from 2 different electronic generations of model. The engine will fit-- but that's about it sorry.
W204 C200CDI Estate
Last edited by grober; 03-09-2011 at 10:01 PM.