Reducing Agent Passive Tank, Removing And Installing: Removal

WARNING: This page is about a different car, the 2011 Audi Q7, 2010 Audi Q7, and 2009 Audi Q7. However, it is still accessible from the selected car via links, so may be relevant.

Follow all safety precautions. Refer to WORKING ON REDUCING AGENT METERING SYSTEM, VEHICLES WITH SCR CATALYTIC CONVERTER .

Follow the guidelines for clean working conditions. Refer to FUEL SUPPLY, INJECTION SYSTEM AND CHARGING SYSTEM CLEAN WORKING CONDITIONS .

WARNING:

Danger due to reducing agent leaking out.

To prevent large amounts of reducing agent when opening the metering line, wait for the recirculation process to complete, refer to WORKING ON REDUCING AGENT METERING SYSTEM, VEHICLES WITH SCR CATALYTIC CONVERTER .

-- Reducing Agent Active Tank, Draining. Refer to REDUCING AGENT ACTIVE TANK, DRAINING .

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

-- Remove the left underbody trim bolts in the center near the passive tank. Refer to UNDERBODY TRIM PANELS .

WARNING:

The weight of the passive tank could cause an accident.

The passive tank must be supported by the Engine/Gearbox Jack VAG1383A when Removal.

Fig 1: Supporting Passive Tank Using Engine/Gearbox Jack VAG1383A

Courtesy of AUDI OF AMERICA, LLC

-- Place the Engine/Gearbox Jack VAG1383A under the passive tank for support.

-- Remove the bolts -1, 2 and 4-.

Fig 2: Passive Tank -3- Bolts -1, 2 And 4-

Courtesy of AUDI OF AMERICA, LLC

NOTE:

The passive tank is shown with the engine/transmission jack.

-- Lower the passive tank -3- with the Engine/Gearbox Jack VAG1383A approximately 100 mm while guiding the passive tank by hand.

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.

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.

Fig 3: Transfer Line -2-, Connector -1-

Courtesy of AUDI OF AMERICA, LLC

-- Unclip the transfer line -2- on the bracket -arrow- and disconnect the Reducing Agent Transfer Pump -V436- by pressing the release button.

-- Disconnect the connector -1- and free up the electrical wire.

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 4: Supply Line -1- And The Ventilation Line -2-

Courtesy of AUDI OF AMERICA, LLC

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

-- Lower the passive tank with the Engine/Gearbox Jack VAG1383A while guiding the tank by hand.