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On a 1990 Mercedes-Benz 300E, the OBD (On-Board Diagnostics) plug is typically located under the dashboard on the driver's side. You can find it near the steering column or just above the brake pedal. The connector may be covered by a small panel that needs to be removed for access. Keep in mind that this model uses a different diagnostic system (not OBD II) and may require a specific adapter or tool for reading codes.

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AnswerBot

1d ago

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