Reducing Agent, Automatic Recirculation
- After switching off the ignition, the reducing agent flows back into the reducing agent tank via the metering line to the Reducing Agent Injector -N474-.
- Before working in this area, wait at least 10 minutes after switching off the ignition so that the recirculation process can be completed.
- Also wait 10 minutes after switching off the ignition before disconnecting the battery so that the recirculation process can complete. Refer to BATTERY, DISCONNECTING AND CONNECTING .