Reverse lamp switch, location/function - GF26.19-P-2101A

TRANSMISSION 716.6 

Fig 1: View Of Reverse Lamp Switch

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Reverse lamp switch, location/function	The reverse lamp switch (S16/2) is located on the rear section of the transmission housing and is operated directly by the shift fork (6).
Reverse lamp switch, function	Reversed gear not shifted ( Fig 1 ):  The contact pin of the reverse lamp switch is not operated by the shift fork (6). Reversed gear shifted ( Fig 1 ):  The contact pin of the reverse lamp switch is operated by the shift fork (6).