Checking the level and topping up the transmission oil in the transfer case (Audi Q5-8R)

Transmission oil temperature approx. 20?C (room temperature). Place the car on a lift or in a pit so that it stands horizontally. The gearbox must remain inoperative for at least 15 minutes to ensure that the oil level in the internal circuit is equalized. Place a device for filling and pumping out oil under the gearbox; Loosen the "arrow" plug on the side of the transfer case. Specified value: The oil level is normal if the transfer case is filled to the bottom edge of the oil filler hole. If necessary, drain excess transmission oil. Fill with transmission oil until it starts to come out of the filler hole.



Repeat the process gradually every 15 seconds, pouring in 50 ml of transmission oil until the transmission oil enters the transfer case. The transfer case is divided into several compartments with oil inside. It takes time to fill them evenly. The screw plug with the sealing ring should be replaced. Tighten the new screw plug.