Gear Oil, Checking Level, Transfer Case

WARNING: This page is about a different car, the 2010 Audi A4 and 2009 Audi A4. However, it is still accessible from the selected car via links, so may be relevant.

Special tools and workshop equipment required

Used Oil Collection and Extraction Unit SMN372500
Protective eyewear

Procedure

Gear oil temperature at approximately 20 °C (68 °F) (room temperature).
Move the vehicle onto a 4-column shop hoist or over a work pit so it is completely level.
The transmission must be still for at least 15 minutes to make sure the oil settles internally.
Tightening specification. Refer to OVERVIEW - CENTER DIFFERENTIAL .

NOTE:

General repair instructions. Refer to GENERAL REPAIR INFORMATION .

Clean working conditions for the automatic transmission. Refer to GUIDELINES FOR CLEAN WORKING CONDITIONS .

-- Place the Used Oil Collection and Extraction Unit SMN372500 under the transmission.

WARNING:

Danger of eye injury.

Wear protective eyewear.

-- Remove the locking bolt -arrow- on the side of the center differential housing.

Fig 1: Identifying Inspection Plug

Courtesy of AUDI OF AMERICA, LLC

Specified value: The level is correct when the transmission fluid comes up to the bottom edge of oil filler hole.

-- Allow the excess gear oil to drain if necessary.

-- Add gear oil if necessary until it runs out of the gear oil filler hole.

Transmission fluid.

-- Repeat the process in steps every 15 seconds with 50 ml of gear oil until the transfer case stops accepting gear oil.

NOTE:

The inside of the transfer case is divided into several oil chambers. The waiting period is necessary to ensure they are all filled evenly.

Replace the drain plug and gasket.

-- Tighten the new sealing plug.