Reducing Agent Active Tank, Draining

WARNING: This page is about a different variant/trim than selected.

Special tools and workshop equipment required

Procedure

-- On a vehicle with air suspension, activate vehicle lift mode. Refer to VEHICLE LIFT MODE .

-- Remove the right rear wheel housing liner. Refer to Wheel Housing Liners .

NOTE:

Place a clean cloth under the separating location to catch any reducing agent that may leak out.

Seal off all open lines and connections with clean plugs.

Fig 1: Identifying Return Line -1-, Extension Hose -2-

Courtesy of AUDI OF AMERICA, LLC

WARNING:

The reducing agent can cause skin irritation.

Avoid contact with skin and eyes! Always wear protective gloves and safety glasses.
If reducing agent should get on your skin, wash it off immediately with soap and water.
If reducing agent gets in your eye, rinse the eye for several minutes with water.
Never inhale or swallow the reducing agent!
Should you swallow any reducing agent, rinse your mouth, drink plenty of water and contact a doctor immediately.

-- Disconnect the return line -1- on the reducing agent delivery unit by pressing the release button.

-- Attach an extension hose -2- to the reducing agent delivery unit connection -arrow- and drain the reducing agent into the container.

-- Open the fuel tank flap.

Fig 2: Identifying Locking Cap -2-

Courtesy of AUDI OF AMERICA, LLC

-- Remove the locking cap -2- from the reducing agent filler tube.

NOTE:

Ignore -item 1-.

-- Drain the reducing agent inside the active tank as far as possible into the drip tray using a hose.

-- Seal any open lines and connections with a clean plug from the Engine Bung Set VAS 6122.

After filling, the following steps must be performed:

-- Adapting Adaptation Value after Draining Reducing Agent or Replacing Components. Refer to ADAPTING ADAPTATION VALUE AFTER DRAINING REDUCING AGENT OR REPLACING COMPONENTS .