The controllers under the seats are for the seats only. The softtop/rollbar unit is behind the rear panels.

I would start by checking the fuses in the rear of the car and checking all fuses for cracks. Small cracks will cause things to be inoperational as will low system voltage.

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Benzmac:
Donnie Drummonds
ASE CERTIFIED MASTER AUTO TECHNICIAN
MERCEDES SPECIALIST 11 YRS