Reducing Agent Tank, Removing And Installing: Removing

WARNING: This page is about a different car, the 2016 Audi A7 Quattro. However, it is still accessible from the selected car via links, so may be relevant.

WARNING:

The reducing agent can cause skin irritation.

Always observe the safety precautions when working with reducing agent. Refer to SCR SYSTEM SAFETY PRECAUTIONS .
Wear protective eyewear.

-- Empty the reducing agent tank. Refer to REDUCING AGENT TANK, DRAINING .

-- Remove the rear left cover for the underbody. Refer to UNDERBODY TRIM PANEL .

-- Disconnect the connector -1-, if equipped.

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-- Remove the nuts -arrows- for the NOx Sensor Control Module 2 -J881-.

-- Free up the wire.

NOTE:

Ignore item -1-.

-- Remove the metering line -2- by pressing the release buttons.

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-- Disconnect the connectors -1 and 3- and free up the wiring harness.

NOTE:

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

-- Press the release button and disconnect the filling hose -1-.

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-- Disconnect the vent line -2-, by pressing the blue slider -4- to loosen the retaining tabs -3-.

-- Seal the open lines and connections with clean plugs from the : VAS6122 .

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WARNING:

Danger due to reducing agent leaking out.

The tank must be empty when removing it.

-- Place the : VAS6931 with a soft foam pad in-between to support the tank.

-- With a second mechanic to hold the tank -1-, remove bolts -arrow- by hand.

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NOTE:

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

-- Lower the tank using the : VAS6931 . Guide the tank with one hand while lowering it.

-- Seal the open lines and connections with clean plugs from the : VAS6122 .