Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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.
- Disconnect the hose which connects the transmission and the oil cooler (inside the radiator).
- 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. - Remove the drain plug from the bottom of the transmission case to drain the fluid.
- Install the drain plug via the gasket, and tighten it the specified torque.
Tightening torque: 32 Nm
- Pour the new fluid in through the oil filler tube.CAUTION: Stop pouring if the full volume of fluid cannot be poured in.
- Repeat the procedure in step (2).NOTE: Check the old fluid for contamination. If it has been contaminated, repeat the steps (6) and (7).
- Pour the new fluid in through the oil filler tube.
- Reconnect the hose which was disconnected in step (1) above, and firmly replace the oil level gauge.
- Start the engine and run it at idle for 1-2 minutes.
- Move the select lever through all positions, and then move it to the N position.
- 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.
- Firmly insert the oil level gauge into the oil filler tube.
RENDER: 1.0x
NO RELATED
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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.