Door Drive System Control Unit, Component Description - GF72.40-P-2124A

Model 223 

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The numbers on the pins indicate the pin numbering of the slots.

Fig 1: Left Front Door Drive System Control Unit Components Location - Model 223

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Arrangement on left 

Fig 2: Right Front Door Drive System Control Unit Components Location - Model 223

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Arrangement on right 

Fig 3: Left Rear Door Drive System Control Unit Components Location - Model 223

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Arrangement on left 

Fig 4: Right Rear Door Drive System Control Unit Components Location - Model 223

Courtesy of MERCEDES-BENZ USA

Arrangement on right