car just goes dead while driving on 2001 Mercedes-Benz SLK320

car drives great then just goes dead wount start back up for a while when it does start check eng light on

You'll want to get the information that is stored in the engine control module and have a diagnosis performed. When the check engine light comes on, there will be diagnostic trouble codes stored that will help to find the problem.
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Having same problem nothing showed up on the diognostics,
any ideas?