This function cleans the particle filter from soot particles by burning them off using an increase in the exhaust temperature. In certain driving conditions, the particle filter can not be cleaned automatically, e.g., in continuous city driving. Then this function is used to force a regeneration.
Note:
The regeneration procedure is run during a test-drive.
Due to the risk of fire, regeneration shall not be run if the soot quantity in the particle filter is above the relevant limit value shown in the function.
The regeneration procedure may take up to 40 minutes.
Regeneration can be cancelled by turning off the engine.
Test conditions:
Engine on.
No faults in the system.
Fuel level at least 1/4.
Correctly installed and working differential pressure sensor.
Procedure:
Start the function.
A dialogue box shows current soot quantity in the particle filter + upper limit value for running a regeneration.
Criteria for successful start of regeneration are shown with current reference values.
Press "OK" when all criteria are fulfilled to start a regeneration.
An activated control light for the particle filter confirms that the regeneration procedure is active.
Drive the car in fourth or fifth gear at approx. 2000 rpm.
When the control light for the particle filter turns off the regeneration procedure is done, press "OK".
The cooling phase starts, follow instructions that are shown.
Press "OK" to exit the function.
The function is done.
If the function fails, check the test conditions and repair any faults.