Engine diagnosis indicator lamp, component description - GF54.30-P-5010AMG

MODEL 164, 251 with ENGINE 156.980 except CODE (494) USA version up to Model Year 8

MODEL 209 with ENGINE 156.982 except CODE (494) USA version

MODEL 211, 219 with ENGINE 156.983 except CODE (494) USA version

MODEL 216, 221 with ENGINE 156.984 up to Model Year 8

Location for model 216, 221

The engine diagnosis indicator lamp (with the yellow engine symbol) is located at the right in the instrument cluster (A1).

Fig 1: Locating Engine Diagnosis Indicator Lamp

Courtesy of MERCEDES-BENZ USA

Task

The indicator lamp alerts the driver to the reoccurrence of faults relevant to exhaust emissions.

Function

The ME-SFI control unit (N3/10) actuates the indicator lamp by transmitting an appropriate signal via the CAN data bus to the instrument cluster.

As a function check the indicator lamp is actuated at "Ignition ON". It goes out after engine start if there are no faults relevant to exhaust emissions.