Automatic Transmission Fluid Replacement

2003 Hyundai XG350 BaseSECTION Automatic Transmission Fluid Replacement

If you have a fluid changer, use this changer to replace the fluid. If you do not have a fluid changer, replace the fluid by the following procedure.

  1. Disconnect the hose which connects the transmission and the oil cooler (inside the radiator).
  2. Start the engine and let the fluid drain out.

    Running conditions: N range with engine idling

    CAUTION: The engine should be stopped within one minute after it is started. If the fluid has all drained out before then, the engine should be stopped at that point.
  3. Remove the drain plug from the bottom of the transmission case to drain the fluid.
  4. Install the drain plug via the gasket, and tighten it the specified torque.

    Tightening torque: 32 Nm

  5. Pour the new fluid in through the oil filler tube.
    CAUTION: Stop pouring if the full volume of fluid cannot be poured in.
  6. Repeat the procedure in step (2).
    NOTE: Check the old fluid for contamination. If it has been contaminated, repeat the steps (6) and (7).
  7. Pour the new fluid in through the oil filler tube.
  8. Reconnect the hose which was disconnected in step (1) above, and firmly replace the oil level gauge.
  9. Start the engine and run it at idle for 1-2 minutes.
  10. Move the select lever through all positions, and then move it to the N position.
  11. Drive the vehicle until the fluid temperature rises to the normal temperature (70-80Β°C), and then check the fluid level again. The fluid level must be at the HOT Mark.
  12. Firmly insert the oil level gauge into the oil filler tube.
Fig 1: Transaxle Overview
G00722063Courtesy of HYUNDAI MOTOR CO.
RENDER: 1.0x

NO RELATED

Recommended Tools & Savings

Use the Manual With the Right Hardware

Pair factory procedures with proven DIY tools so the instructions are easier to execute.

Affiliate disclosure: We may earn a commission at no extra cost to you.

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.