How do you refill the transmission oil in 745i BMW?

To refill the transmission oil in a BMW 745i, first ensure the vehicle is on a level surface and warm the engine to operating temperature. Locate the transmission dipstick or fill plug, which is usually found near the back of the engine compartment. Using a funnel, pour the appropriate type of Transmission Fluid through the dipstick tube or fill hole until it reaches the correct level, as indicated on the dipstick. Finally, check for leaks and ensure the fluid level is within the recommended range.