How do you replace or get to the shift control module showing code P1100 on 2007 Mercedes-Benz E320 BLUETEC

No voltage goes to starter solinoid while in park and foot on brake

Scan Body Control Computer for Codes as a first move to diagnose
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!