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Home >> Audi >> 2012 >> Q7 3.0 TDI >> Repair and Diagnosis >> Engine Mechanical >> Exhaust >> 3.0L - Exhaust System, Emission Controls - Engine Code(S): CATA >> 26 Exhaust System, Emission Controls >> General Information >> ADBLUE® Passive Tank, Draining

ADBLUE® Passive Tank, Draining

Special tools and workshop equipment required 

Procedure 

Follow all safety precautions SAFETY PRECAUTIONS => Observe the following when working on the reducing agent metering system: .

Follow the guidelines for cleanliness. Refer to CLEAN WORKING CONDITIONS .

-- Remove the reducing agent passive tank. Refer to ADBLUE® PASSIVE TANK .

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.

-- Seal off the connection -2- on the passive tank with a clean plug.

Fig 1: Passive Tank, Reducing Agent Transfer Pump -V436- -1- And Hoses
GWWA20-10500Courtesy of AUDI OF AMERICA, LLC

-- Attach an extension hose -4- to the connection -3- and place it in a container.

-- Tip the passive tank to drain as much reducing agent as possible into the drip tray.

-- Carefully remove the hose -5- from the connection -arrow- and the reducing agent transfer pump -V436- -1-.

-- Push the hose down and hold it in the container.

-- Drain any remaining reducing agent still inside the passive tank into the drip tray using the connecting hose.

-- Seal the open lines and connections with clean plugs from the VAS 6122.

After filling, the following steps must be performed:

-- Adapting adaptation value after draining AdBlue® or replacing components. Refer to ADAPTING ADAPTATION VALUE AFTER DRAINING ADBLUE® OR REPLACING COMPONENTS .