Dunker
23rd March, 2021, 11:35 PM
A friend has brought me an ECU from his Mercedes C Class. It has a fault (alledgedly). The car has an airflow meter fault code that will not clear. Airflow meter has been swapped and wires checked OK back to ECU. Another car with the same engine side by side has identical voltages on all connections.
He asked me if I can clone the ECU.
I have read the Flash and EEPROM OK with my orig PCMFlash. (4Mb Flash & 32Kb EEPROM)
My question is, can I just write this data to another ECU with the same numbers from ebay, clear any fault codes and everything should be good for the car to run.
I just wondered if these ECUs have the same sort of IMMO idea as the VW ones with OTP.
Also, just for testing this new ECU before any cloning operation, can it just be plugged into the car to see if this fault code appears without screwing up the immobilizer on the car like some other makes do.
Maybe the software in the original ECU is at fault and I might be cloning bad data. I would prefer to do everything on the bench as I dont have Xentry or anything the same (yet).
Any advice appreciated.
He asked me if I can clone the ECU.
I have read the Flash and EEPROM OK with my orig PCMFlash. (4Mb Flash & 32Kb EEPROM)
My question is, can I just write this data to another ECU with the same numbers from ebay, clear any fault codes and everything should be good for the car to run.
I just wondered if these ECUs have the same sort of IMMO idea as the VW ones with OTP.
Also, just for testing this new ECU before any cloning operation, can it just be plugged into the car to see if this fault code appears without screwing up the immobilizer on the car like some other makes do.
Maybe the software in the original ECU is at fault and I might be cloning bad data. I would prefer to do everything on the bench as I dont have Xentry or anything the same (yet).
Any advice appreciated.