Ecu

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Broadleybenz

Active Member
Joined
Apr 29, 2021
Messages
92
Location
Middlesbrough
Car
E 320 cdi
If I’m buying a second hand ecu what numbers need to be the same?
seen a few out of same car same engine but different numbers
 
Generally speaking, the part numbers need to be the same, but not always and sometimes even the same part number will not work. Some ECUs are coded to individual vehicles.

More info required. What's the model of the car & what part # are you replacing?
 
Generally speaking, the part numbers need to be the same, but not always and sometimes even the same part number will not work. Some ECUs are coded to individual vehicles.

More info required. What's the model of the car & what part # are you replacing?
E320 cdi w211 2004 plate
Replacing the ecu
I’ve got someone who said they can program the ecu to my car aslong as I get the correct one
But how do I no which is the correct one
 

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