Hello All-
We have a 1996 S420 (W140) in the garage with the EPC (Electronic Power Control) & ASR lights on. The low fuel light is also flashing even though there is plenty of fuel. The car is in a limp mode and displays ocassional misfiring and will not exceed 30mph. I'm told by BlueLink that this is a "bastard car" that has an odd wiring setup and is different from most S420s in 1996. Supposedly there was a run of 2000 or so cars that had a wiring setup that is not found on the common diagram for that year. This is a 10/05 production car. Anyway, the CAN line is having trouble and the main computer seems to be "unlocked," meaning not coded to the car. We can take the ECU out and start and run another car fine, but cannot do vice versa because the drive authorization on another car's computer is still coded to that car and will not run this car (like it's supposed to). Wiring checks have shown nothing so far. Any ideas?

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Mike
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