1993 Mercedes Benz 400EFACTORY OEM SERVICE PROCEDURE

Bench Testing

NOTE: During short circuit test, minimum input voltage to starter is 8 volts.
SHORT CIRCUIT TEST (1)

Application Volts Amps
V8 3.8 650-840
(1) Test period should be as short as possible.
IDLE SPEED TEST @ 11.5 VOLTS

Application (1) Amps Minimum RPM
V8 95 2800
(1) Amp specification should be equal to or less than specification given.
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.

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