Pulled the codes again tonight which are displayed below. The actual readings for the open circuit looks like it's pointing at the in-cabin temp. sensor. Does that seem correct? (ie; -//- means circuit OPEN)

If that's the identifier then that'll be the likely culprit. Once that's closed the remainder should follow suit unless there are additional bad sensors within the loop.

Also included the CCU version information just in case.

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1995 E420
1998 SL500 Sport
2009 E350 Sport
1995 S500 Coupe
1992 500 SEL