Reducing Agent Tank, Draining

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

Procedure

Fig 1: Identifying Locking Cap -2-

Courtesy of AUDI OF AMERICA, LLC

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.

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 .

-- Turn off the ignition.

-- Open the fuel filler door.

-- Remove cover -2- from the reducing agent filler tube

NOTE:

Ignore item -1-.

-- Remove bolts and nuts -arrow-, and remove the tank cover -1-.

Fig 2: Identifying Tank Cover Bolts And Nuts

Courtesy of AUDI OF AMERICA, LLC

-- Place the drip tray underneath.

Fig 3: Identifying Cap

Courtesy of AUDI OF AMERICA, LLC

NOTE:

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

-- Remove cap -arrow-, by pressing the release button, drain the reducing agent into the drip tray, and remount the cap.

After Filling, the Following Steps Must Be Performed.

-- Adapting adaptation value after draining reducing agent or replacing components, refer to SCR-SYSTEM ADAPTATION VALUE, ADAPTING .