Gear Oil Level, Checking, Transfer Case, Transmission With Separated Oil System

WARNING: This page is about a different car, the 2024 Audi S5 and 2023 Audi S5. 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
Pressurized Gearbox Oil Filler Kit:VAS6617
Pressurized Gearbox Oil Filler Kit:VAS6617/2
Pressurized Gearbox Oil Filler Kit - Adapter 6:VAS6617/6

Requirements:

General repair instructions. Refer to GENERAL REPAIR INFORMATION .
Guidelines for clean working conditions. Refer to GUIDELINES FOR CLEAN WORKING CONDITIONS .
Replace the plug for the inspection and fill hole.

Gear oil temperature: approximately 20 °C (68 °F) (room temperature).
Move the vehicle onto a 4-column workshop hoist or over a work pit so it is completely level.
Transmission is in "P".
The parking brake button is pressed to activate the electro-mechanical parking brake.
The transmission must be still for at least 15 minutes to make sure the oil settles internally.

Procedure

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-- Place the :SMN372500 under the transmission.

-- To catch escaping gear oil place multiple cloths around the tunnel crossmember.

CAUTION:

Risk of Injury to the Eyes by Escaping Oil

- Wear protective eyewear.

-- Remove the drain plug -arrow A- from the center differential housing.

Specified value: The oil level is correct when the transfer case is filled to the lower edge of the filler opening.

-- Let any excess oil drain.

If the Level in the Transfer Case Does Not Reach the Lower Edge of the Oil Fill Hole:

Fig 1: Installing Adapter VAS 6617/6 & Adapter VAS 6617/2 In Inspection & Fill Hole In Transfer Case

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-- Install the :VAS6617/6 with the :VAS6617/2 in the inspection and fill hole in the transfer case hand-tight.

-- Connect the :VAS6617 and fill the transfer case with gear oil.

Transmission fluid. Refer to the appropriate Parts Information.

-- Wait five minutes.

Tip:

The inside of the transfer case is divided into several oil chambers. The chambers must be filled equally.
A waiting time of at least 5 minutes is required so that the internal oil level between the center differential and oil fill space can equalize.

-- Remove the :VAS6617/6 from the transmission and let any extra gear oil drain out.

-- Tighten the new drain plug -arrow A- for the center differential housing.

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-- Remove the cloth from the tunnel crossmember.

Tightening Specifications

Drain and plug. Refer to COMPONENT LOCATION OVERVIEW - DRAIN AND CHECK PLUGS .