Did you have your key on? Seats and wheel will move with the doors open,(convenience from MB engineers for entering the car. With the doors closed the switches won't work without the key in position II. If they don't work that way, you may need to clean the switches. Or the trouble is in the wiring going through the doors.

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1986 Euro 500SEC "RUF" 9:1CR, "Rose"
1985 Euro 500SEC Cabriolet AMG Widebody
1982 Euro 500SEL "Blue"
2001 Texas Heeler (Aussie/Queensland X) "Sulphie",
2012 Queensland Red Heeler "Squeak"
Best dogs I've ever had.