Reducing Agent Tank, Removing And Installing: Removing

WARNING: This page is about a different car, the 2016 Audi Q5, 2015 Audi Q5, and 2014 Audi Q5. However, it is still accessible from the selected car via links, so may be relevant.

Follow all safety precautions, refer to SCR SYSTEM SAFETY PRECAUTIONS .

Follow the guidelines for clean working conditions, refer to CLEAN WORKING CONDITIONS .

WARNING:

Danger due to reducing agent leaking out.

To prevent large amounts of reducing agent from leaking out when opening the metering line, wait for the recirculation process to complete, refer to SCR SYSTEM SAFETY PRECAUTIONS => Reducing Agent, Automatic Regeneration .

-- Draining the reducing agent tank, refer to REDUCING AGENT TANK, DRAINING .

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

Fig 1: Identifying Heat Shield -1- And Bolts

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 connectors -2 and 3- and free up the wiring harness.

Fig 2: Identifying Reducing Agent Module Harness Connectors -1-, -2- and -3-

Courtesy of AUDI OF AMERICA, LLC

-- Disconnect and free up the reducing agent hose -1-, refer to REDUCING AGENT DELIVERY LINE, REMOVING AND INSTALLING .

Fig 3: Identifying Engine/Gearbox Jack VAS 6931

Courtesy of AUDI OF AMERICA, LLC

WARNING:

Risk of accident due to the weight of the tank.

The tank must be empty when removing it.

-- Place the Engine and Gearbox Jack VAS6931 with a soft foam pad in-between to support the tank.

-- With a second mechanic to hold the tank, remove bolts -arrow-.

Fig 4: Identifying Reducing Agent Tank And Mounting Bolts

Courtesy of AUDI OF AMERICA, LLC

NOTE:

For better illustration the tank is shown without the engine and transmission.

-- While guiding the tank by hand, lower the it approximately 100 mm with the Engine and Gearbox Jack VAS6931.

NOTE:

To catch escaping reducing agent place a clean cloth under the separation point.

-- Disconnect the filling hose -1- and the ventilation line -2- by pressing the release button.

Fig 5: Identifying Reducing Agent Tank Filling Hose -1- And Ventilation Line -2-

Courtesy of AUDI OF AMERICA, LLC

-- Seal the open lines and connections with clean plugs from the Engine Bung Set VAS6122.

-- Lower the tank again using the Engine and Gearbox Jack VAS6931. Guide the tank with one hand while lowering it.