How do I clear the Anti Theft Protection Activation message for 2011 MB Ml350?

What is your question?

I recently had a new EIS unit installed last month due to the car not starting. I'm now getting an Anti Theft Protection Activated message which has disabled the command unit controlling the radio, navigation, camera, etc. The car starts no problem and the alarm arms/disarms. I read a pin is necessary to clear the activation. Would only a MB dealer be able to clear this?

What makes this problem better or worse?

Nothing

How long has your 2011 Mercedes-Benz ML350 had this problem?

Couple days