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Home >> Mercedes Benz >> 2007 >> ML320 >> Repair and Diagnosis >> Electrical >> Motors, Switches, Relays >> Charging, Control Panel/Cluster, Data Bus, Fuses/ Relays, PARKTRONIC, Sensors & Switches - 164 Chassis >> Basic Knowledge >> "CHECK ENGINE" MIL - Description of components - GF54.30-P-5011BK

"CHECK ENGINE" MIL - Description of components - GF54.30-P-5011BK

MODEL 219 with ENGINE 113.967 with CODE (494) USA version 

MODEL 164.1 with ENGINE 113.964 with CODE (494) USA version 

MODEL 251 with ENGINE 113.971 with CODE (494) USA version 

Shows model 219 

Location 

The "CHECK ENGINE" MIL is located in the instrument cluster.

Fig 1: Identifying Check Engine Indicator Lamp
G05259027Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Task 

The "CHECK ENGINE" MIL alerts the driver to emissions-relevant malfunctions.

Function 

The indicator lamp is actuated by the instrument cluster via a CAN message from the engine control unit. As a check of the function it lights up when the ignition is ON and for approx. 1 second as of an engine speed of approx. 500 rpm. The indicator lamp goes out if there is no fault present.