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Door contact switch, location/task/design/function - GF82.20-P-4102T

MODELS 211.0 /2 /6 

Shown on model 211.0 

Fig 1: Locating Door Contact Switches
G07504528Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

IMPORTANT In Model 211.6, depending on equipment and special body, the number and position of the interior lamps may vary.

Door contact switches, position The left front door contact switch (S17/3) and right front door contact switch (S17/4) are located in the B-pillar at the level of the closing wedge. The left rear door contact switch (S17/5) and the right rear door contact switch (S17/6) are fitted in the C-pillar in the area of the closing wedge.
Door contact switches, task Using the door contact switches the status of the vehicle doors "open" or "closed" is measured as an electrical signal.
Door contact switches, design The door contacts are openers. The switching contacts are open when the doors are closed.
Function of door contact switches When the door is open, the respective door contact switch sets ground on the corresponding input of the rear SAM control unit with fuse and relay module (N10/2); this then places the message about the status of the doors on the interior CAN.