Overview - Reducing Agent Delivery Line

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.

Fig 1: Overview Of Reducing Agent Delivery Line

Courtesy of AUDI OF AMERICA, LLC

Front Exhaust Pipe
Clamp
- Replace
Bolt
- 5 Nm
Seal
- Replace
Reducing Agent Injector -N474-
- Removing and installing, refer to REDUCING AGENT INJECTOR -N474-, REMOVING AND INSTALLING .
- The tabs in the Reducing Agent Injector -N474- must be inserted in the appropriate mounts in the front exhaust pipe.
Metering Line
- From the Reducing Agent Pump -V437-
- With heating
- To disconnect, press release buttons
  WARNING:
  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 .
Connector