Component description for the fuel level sensor - GF47.10-P-2010V

WARNING: This page does not describe the selected car, but rather 28 other vehicles, including the 2012 Mercedes-Benz GL550, 2012 Mercedes-Benz GL450, 2011 Mercedes-Benz ML63, 2011 Mercedes-Benz ML550, and 2011 Mercedes-Benz ML350. However, it is still accessible from the selected car via links, so may be relevant.

MODEL 203 with ENGINE 272.920

MODEL 211 with ENGINE 272.922

MODEL 203, 209 with ENGINE 272.940

MODEL 203 with ENGINE 272.941

MODEL 171 with ENGINE 272.942

MODEL 211 with ENGINE 272.943

MODEL 211 with ENGINE 272.944

MODEL 251 with ENGINE 272.945

MODEL 221 with ENGINE 272.946

MODEL 203, 209 with ENGINE 272.960

MODEL 171 with ENGINE 272.963

MODEL 211, 219 with ENGINE 272.964

MODEL 221 with ENGINE 272.965

MODEL 230 with ENGINE 272.966

MODEL 164, 251 with ENGINE 272.967

MODEL 203 with ENGINE 272.970

MODEL 211 with ENGINE 272.972

MODEL 221 with ENGINE 272.975

MODEL 221 with ENGINE 273.922

MODEL 164 with ENGINE 273.923

MODEL 221 with ENGINE 273.924

MODEL 164 with ENGINE 273.943

MODEL 211, 219 with ENGINE 273.960

MODEL 216, 221 with ENGINE 273.961

MODEL 211 with ENGINE 273.962

MODEL 164, 251 with ENGINE 273.963

MODEL 230 with ENGINE 273.965

MODEL 209 with ENGINE 273.967

MODEL 221 with ENGINE 273.968

Fig 1: Identifying Fuel Level Sensor Components - Model 203 with Engine 272.920/941/960

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Location

The fuel level sensor is located in the fuel tank. If the fuel tank is divided into two chambers, each chamber has a fuel level sensor.

Task

Determines the fuel level for the following functions:

Fuel level indicator
Leakage check of regeneration system
Misfire detection.

Design

Float-and-lever sensor with two wiper contacts (potentiometer) and a float.

Function

To change the resistance values depending on the fuel level. The signals are transmitted to the nearest SAM control unit (e.g. rear SAM control unit with fuse and relay module for models 171, 211, 219, 221). The signal are digitalized there and transmitted to the CAN data bus.