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Diagnostic Trouble Code (DTC HFM-SFI)

  1. Turn ignition off. Perform pretest conditions. See PRETEST CONDITIONS. See SERVICE PRECAUTIONS. If diagnosing vehicle using a generic scan tool, connect generic scan tool to data link connector (X11/22) located under driver's side dash board. See Fig 1 .
  2. If diagnosing vehicle using Hand-Held Tester (HHT) (965 589 00 01 00), connect Multiplexer Cable (965 589 00 40 00) to HHT. Ensure ignition is off. Connect multiplexer cable to data link connector (X11/4), located in right rear corner of engine compartment. See Fig 2 . Turn ignition on. Record all fault codes. See appropriate table under HFM-SFI FAULT CODE IDENTIFICATION to identify fault code.
Fig 1: Locating Diagnostic Connector (X11/22)
G94B45337Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
Fig 2: Locating Diagnostic Connector (X11/4)
G94C45338Courtesy of MERCEDES-BENZ OF NORTH AMERICA.