2003 Acura MDX BaseFACTORY OEM SERVICE PROCEDURE

Transfer Assembly Fluid Replacement

  1. Bring the transmission up to normal operating temperature (the radiator fan comes on).
  2. Park the vehicle on level ground, and turn the engine off.
  3. Remove the drain plug (A), and drain the transfer fluid (hypoid gear oil).
    Fig 1: Removing Drain Plug
    G03640363Courtesy of AMERICAN HONDA MOTOR CO., INC.
  4. Reinstall the drain plug with a new sealing washer (B).
  5. Remove the filler plug (A) and sealing washer (B).
    Fig 2: Filling Transfer Assembly With Recommended Fluid To Correct Level
    G03640364Courtesy of AMERICAN HONDA MOTOR CO., INC.
  6. Refill the transfer assembly with the recommended fluid (hypoid gear oil) into the filler hole (C) until the fluid from flowing out. Use a SAE 90 or SAE 80W-90 viscosity hypoid gear oil, API classified GL4 or GL5 only.

    Viscosity 

    SAE 90: Above 0 °F (-18 °C) 

    SAE 80W-90: Below 0 °F (-18 °C) 

    Transfer Fluid (Hypoid Gear Oil) Capacity: 

    0.43 L (0.45 US qt) at fluid change 

  7. Install the filler plug with a new sealing washer.
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:

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