How do you change automatic transmission oil on a 2005 mini cooper s?

To change the automatic transmission oil on a 2005 Mini Cooper S, start by warming up the engine to thin the oil, then turn it off. Lift the vehicle and secure it, then remove the transmission drain plug to let the old oil drain completely. Replace the drain plug, then use a funnel to refill the transmission with the appropriate type and amount of new oil through the dipstick tube. Finally, check the oil level with the dipstick, ensuring it is within the recommended range.