How do you replace or get to the shift control module showing code P1100

had already done that and came up with the code p1100

then OBVIOUSLY scan body control computer for codes as a SECOND move to diagnose.NOW we're making some progress. then get access to a good service manual (mercedes) then you can properly diagnose "THE CODE" and safely remove and replace parts as needed without causing yourself more grief, thus staying off-line and away from idiots like me!