Loss of power and check engine lt on on 2005 Mercedes-Benz S600

Fault code said left ignition coil was bad so I replaced that along with the spark plugs and the car is the same. When I pull car out of garage in morning it usually runs ok but driving to work it starts acting up and loses power.

Asked by for the 2005 Mercedes-Benz S600
It is going into Limp Mode. It needs a full diagnostic from the dealership or another authorized Mercedes-Benz mechanic/shop.