How to do Auto gear box oil change Renault laguna?

To change the automatic gearbox oil on a Renault Laguna, first ensure the vehicle is on a level surface and the engine is warm. Remove the gearbox drain plug to let the old oil flow out completely, then replace the plug once drained. Next, remove the fill plug and use a funnel to add the new gearbox oil, checking the level with the dipstick to ensure it is at the correct mark. Finally, run the engine for a few minutes, check for leaks, and recheck the oil level, topping up if necessary.