Where is the transfer case oil drained on the Audi Q5?

[StCamilla]

Audi Q5 transfer case oil is drained on both sides of the transmission. Oil replacement method: When replacing automatic transmission fluid, most often the screw at the bottom of the automatic transmission oil pan is removed to drain the old oil before adding new oil. This method only replaces about 30% of the new oil, leaving 70% of the old oil still remaining in the transmission. If the oil pan is removed for oil replacement, a 70% oil replacement rate can be achieved, ensuring the transmission's health. Introduction to transfer case oil: Transfer case oil is differential gear oil. The so-called transfer case is a device that distributes the engine's power, which can output power to the rear axle or simultaneously to the front/rear axles. The transfer case is a transmission device on four-wheel-drive vehicles.

[JadeMarie]

I've been driving an Audi Q5 for several years and have changed the transfer case oil myself multiple times. The drain plug is located at the bottom of the transfer case - there's a dedicated bolt that you can clearly see after lifting the car with a vehicle lift and crawling underneath. It's positioned in the central area of the vehicle, near the driveshaft. The bolt typically has a copper head design, and I easily loosen it using a 10mm socket wrench. When the oil drains out, remember to place a bucket underneath to catch it and prevent environmental contamination. When refilling with new oil, ensure it meets the factory specifications. It's recommended to change it every 50,000 kilometers to keep the four-wheel-drive system running smoothly. As someone who enjoys DIY car maintenance, this process not only saves money but also provides valuable learning experiences that boost confidence.

[VonArabella]

Changing the transfer case oil for my Audi Q5 is quite routine. The location is at the very bottom of the transfer case housing, where there's a drain bolt—just inspect the underside carefully and you'll find it. When I perform the task, I always safely lift the car first, using a jack for stable support, then gently loosen the bolt with a standard wrench to let the oil drain naturally. The key is to use the manufacturer-recommended fluid and avoid mixing brands to prevent component damage. The exact position is in the center of the chassis, right next to the rear axle section. Before and after the operation, check the oil level to prevent leaks. Regular replacement helps avoid internal wear and extends lifespan—I recommend checking every 30,000 to 40,000 km to ensure everything's in order.

[Kaleb]

Once I took my Audi Q5 to change the transfer case oil, which is located at a small bolt underneath the transfer case. When the car was lifted, it was immediately visible and easy to find in the middle of the chassis. Remember to loosen the bolt and let the oil drain slowly into a container to avoid waste. After replacing the new oil, tighten the bolt. The whole process isn't difficult but is crucial for the vehicle's operation. As an experienced driver, I emphasize finding a reliable place to handle it for peace of mind and safety.