2002 Mercedes Benz S430FACTORY OEM SERVICE PROCEDURE

Connecting Socket Box

Manufacturer recommends using Socket Box (129 589 00 21 00) for making measurements to prevent damage to electrical connectors and terminals. See Fig 1 . Manufacturer identifies all system components with an alphanumeric identification (i.e., N3/10 is for ME-SFI control module).

NOTE: When connecting test equipment, disconnect ME-SFI control module connector "D" first. When reconnecting connectors, connect connector "D" last. See ME-SFI CONTROL MODULE CONNECTOR IDENTIFICATIONΒ  .
Factory Service Tools

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.