2010 722.9 trannie better

thinking about buying 2010 E550 with 722.9 trannie, are the transmissions reliability improved? I have discovered that Siemens or VDO who are subcontracted to make transmission parts has had a dispute with M.B. on some versions of the conductor plate. Can you explain the three versions of the conductor plate and how they relate to the valve body and the TCU?

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