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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 >> Description And Operation >> ADBLUE® Active Tank And Attachments Overview

ADBLUE® Active Tank And Attachments Overview

NOTE:

Installed location: Inside the right rear wheel housing, under the wheel housing liner

Fig 1: Adblue® Active Tank And Attachments Overview
GWWA20-10583Courtesy of AUDI OF AMERICA, LLC
  1. Union Nut
  2. AdBlue® Delivery Unit
    • With reducing agent tank sensor -G684-
    • With reducing agent temperature sensor -G685-
    • With reducing agent tank heater -Z102-
    • With filter
    • Removing and installing, refer to ADBLUE® DELIVERY UNIT 
  3. Seal
    • Replace
    • Install dry
  4. Bolt
    • 9 Nm
  5. Active Tank
  6. Transfer Line
    • From the reducing agent transfer pump -V436- to the active tank
    • Clipped in on fuel tank
  7. Cap
  8. Filling Line
    • From the active tank to the passive tank
    • Clipped in on fuel tank
  9. Reducing Agent Pump -V437-
    • With reducing agent pump heater -Z103-
    • With reducing agent metering system pressure sensor -G686-
    • Removing and installing, refer to ADBLUE® PUMP 
      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 SAFETY PRECAUTIONS .
  10. Metering Line
    • From the reducing agent pump -V437- to the reducing agent injector -N474-
    • Clipped in on fuel tank
      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 SAFETY PRECAUTIONS .
  11. Bolt
    • 1.8 Nm
  12. Return Line
    • Clip onto the active tank
  13. Supply Line
    • Clip onto the active tank