Engine Oil Sensor, Component Description - GF18.40-P-2000A

Model 223 

Courtesy of MERCEDES-BENZ USA

Depiction valid for model 223 with engine M176 

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

Fig 1: Engine Oil Fill Level Sensor Components Location - Model 223 (Shown With Engine M176)

Courtesy of MERCEDES-BENZ USA

Arrangement in model 223 with engine M176