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1998 ML 320
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9 Posts
Discussion Starter · #1 ·
Is it possible to change both the engine and transmission control modules on my ML 320 without re-programming?
They are matching numbers to the originals, but they do not match the key.
I am wondering because I had to change the transmission module, but from what I understand it will have to be programmed with the VIN # of the car so it will work with the existing engine control module. But since I have both modules, I was wondering if it would work. If I was to change both units.
Thanks for your input.
 

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Outstanding Contributor
2006 ML500 2002 ML320
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17,580 Posts
The TCM you will probably have no problem with, but the ECM is a different story. I think it is married to the Drive Authorization System module, insomuch as it has to recognize the key codes.
 
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