'02 L322 Radio ON/OFF, Analog clock resets

Catchy said:

OK here is what is happening with mine -

I cannot use the radio to set the date or time or reset trip meter or fuel consumption or anything. It just will not interact with the instrument cluster. I have tried resetting (option 21) and battery resets also. So the clock stays at --:-- and the date stays at --/--/2008.

I know the analog clock is set with the digital clock. The analog clock starts to work, funnily enough, like a clock. But turn the radio on and I can watch the dials move back like I was in a time machine. Keep the radio/CD on for 10 minutes and the analog clock indeed reads 12:10 (in analog ). Turn the radio off and its a time machine all over again.

My questions -

Any Ideas?
Where is the ECU that controls the interaction of the radio panel and the instrument panel?

Thanks

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