Automatic Transmission Fluid (ATF) Level, Checking, Transmission With Combined Oil System: Procedure

WARNING: This page is about a different car, the 2015 Audi A7 Quattro, 2014 Audi A7 Quattro, 2013 Audi A7, and 2012 Audi A7. However, it is still accessible from the selected car via links, so may be relevant.

Gear oil temperature: approximately 20°C (68°F) (room temperature).
The engine must be switched off when working.
Move the vehicle onto a four-column workshop 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.
Transmission in "P".
The parking brake button should be activated to close the electro-mechanical parking brake.

NOTE:

General repair instructions. Refer to GENERAL REPAIR INFORMATION .

Pay attention to clean working conditions for the transmission. Refer to GUIDELINES FOR CLEAN WORKING CONDITIONS .

Follow the disposal requirements.

Replace the Automatic Transmission Fluid (ATF) drain plug and seal.

Replace the plug for the Automatic Transmission Fluid (ATF) check and fill hole.

-- Remove the rear noise insulation -2-. Refer to Noise Insulation .

Fig 1: Identifying Rear Noise Insulation

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-- Remove the bolts -arrows- and remove the right heat shield -1-.

Fig 2: Identifying Bolts And Right Heat Shield

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-- Audi RS6: Remove the bolts -1, 2- and then press the coolant pipe on the right to the side.

Fig 3: Identifying Bolts

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-- Place the Used Oil Collection and Extraction Unit SMN 372500 under the transmission.

WARNING:

Danger of eye injury.

Wear protective eyewear.

NOTE: Place a cloth over the tunnel crossmember to prevent axle oil from getting into the cast pockets on the top.

-- Remove the drain plug -arrow A- from the front final drive.

Fig 4: Identifying Drain Plug From Front Final Drive

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

Fig 5: Drain Gear Oil From Transfer Case

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Specified value: The fluid level is correct, when the front final drive and the rear transfer case if filled up to the lower edge of the filler hole.

If the level does not reach the bottom of the oil fill hole:

-- Install the Pressurized Gearbox Oil Filler - Adapter 6 VAS 6617/6 with Pressurized Gearbox Oil Filler - Adapter 2 VAS 6617/2 in the transfer case inspection hole -arrow A- hand tight and fill until the lower edge of the filling opening with axle oil. Do not close the inspection hole. Transmission fluid.

Fig 6: Drain Gear Oil From Transfer Case

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-- Install the Pressurized Gearbox Oil Filler - Adapter 6 VAS 6617/6 with Pressurized Gearbox Oil Filler - Adapter 2 VAS 6617/2 in the front final drive inspection hole hand tight and fill until the lower edge of the filling opening with axle oil.

Fig 7: Installing Adapter VAS 6617/6 & Adapter VAS 6617/2 Into Transmission Hand-Tight

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-- Then fill the front with approximately 1 liter axle oil.

-- Wait the equivalent time, until axle oil flows out of the rear transfer case inspection hole.

-- Immediately after oil flows out, close the rear transfer case inspection hole.

NOTE: Through overfilling the transmission fluid flows between the inner oil level from the front final drive to the rear transfer case.

-- Remove the Pressurized Gearbox Oil Filler - Adapter 6 VAS 6617/6 from the transmission and let any extra gear oil on the front final drive drain out.

-- Replace both inspection plug and tighten.

-- Audi RS6: Install the right coolant pipe on the transmission. Refer to [For engine(s) CEUC, CRDB] Cooling System .