Diesel Particle Filter Emergency Regeneration

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1.4l/1.9l/2.0l R4 & 2.5l R5 PD/PPD-TDI

Prerequisites (General):

  • Ignition ON
  • Engine ON (Idle)
  • Coolant Temperature above 50 °C (see Measure Value Block group 002, field 4)
  • Particle Filter Load below Specification (see Measure Value Block group 075, field 3, VCDS should give the specified value)
    • If the Particle Filter Load is above Specification the Particle Filter needs to be replaced since the car may burn down when regenerating.
  • Power Consumers ON (Light, Seat Heating, Front/Rear Window Heater, Climate Control)

Conditions (Driving Cycle):

  • Vehicle Speed between 30-60 km/h (18-37 MPH)
  • Engine Speed between 1500-2500 RPM (4th or 5th Gear, Automatic Transmission in Tiptronic)
  • Duration approx. 15-20 Minutes
  • Exhaust Gas Temperature before Turbo Charger above 700 °C

Drive the car based on the above conditions until the Particle Filter Load is as low as possible (close to 0 %). In case the regeneration fails there can either be problems with the Driving Cycle Conditions or with the Engine Hardware.

[Select]
[01 - Engine]

[Coding-II - 11]

  • Enable Regeneration by Entering 21295.

[Do It!]

[Meas. Blocks - 08]
Select both Groups at once 070 and 075.
[Go!]
MVB 070.1: Regeneration Status (xxxxxxx1 = Normal Regeneration active, xxxxxx1x = Forced Regeneration active)
MVB 070.3: Regeneration Counter/Timer
MVB 075.1: Exhaust Gas Temperature before Turbo Charger
MVB 075.2: Exhaust Gas Temperature before Particle Filter
MVB 075.3: Particle Filter Load
MVB 075.4: Exhaust Gas Temperature after Particle Filter

Now Start the Driving Cycle and keep watching the Measuring Blocks (2nd Person required).

[Done, Go Back]
[Close Controller, Go Back - 06]

1.6l/2.0l R4 CR-TDI (CAN)

With the newer CR-TDI engines there are 2 different types of regenerations available depending on the actual soot mass/load. If either the calculated or measured soot mass is above 30g but below 40g you can initiate a regeneration while standing (Idle will be raised etc.), a forced regeneration while driving is also possible. Once the values are above 40g (but below the max 45g) the regeneration while standing is no longer available and the regeneration while driving is the only way.

Regeneration while Standing/Idle

Prerequisites (General):

  • Ignition ON
  • Engine ON (Idle)
  • Fuel Tank at least 1/4 full
  • Transmission in Neutral/Park
  • Parking Brake engaged
  • Coolant Temperature above 70 °C (see Measure Value Block group 002, field 4)
  • Particle Filter Load below Specification (see Measure Value Block group 108, field 2/3 -or- 241.2/3 VCDS should give the specified values)
    • If the Particle Filter Load is above Specification the Particle Filter needs to be replaced since the car may burn down when regenerating.
  • Power Consumers ON (Light, Seat Heating, Front/Rear Window Heater, Climate Control)
  • Engine Hood Closed

[Select]
[01 - Engine]

[Security Access - 16]

  • Enter the Code shown by VCDS next to Adaptation Enabling (e.g. Regeneration while Standing)

[Do It!]

[Basic Settings - 04]

  • Select Block for Regeneration while Standing

[Go!]
[On/Off/Next] if Basic Settings isn't automatically ON at the top of the screen.

  • Follow the Instructions on the Screen. This process may take up to 30 minutes.

[Done, Go Back]

Check the following groups after the regen. The Particle Filter Load should be as low as possible (close to 0 %)
[Meas. Blocks - 08]
Select Blocks 099 and 108 at once.
[Go!]

MVB 099.2: Exhaust Gas Temperature before Turbo Charger
MVB 099.3: Exhaust Gas Temperature before Particle Filter
MVB 099.4: Exhaust Gas Temperature after Particle Filter

MVB 108.2: Particle Filter Soot Mass (calculated) Alternate group 241.2 if 108 is blank
MVB 108.3: Particle Filter Soot Mass (measured) Alternate group 241.3 if 108 is blank


[Done, Go Back]
[Close Controller, Go Back - 06]

Regeneration while Driving

Prerequisites (General):

  • Ignition ON
  • Engine ON (Idle)
  • Coolant Temperature above 70 °C (see MVB 002.4)
  • Particle Filter Load below Specification (see MVB 108.2/3, VCDS should give the specified values)
    • If the Particle Filter Load is above Specification the Particle Filter needs to be replaced since the car may burn down when regenerating.
    • If the Particle Filter Load value in MVB 108 is blank, use alternate group 241.2/3 instead.
  • Power Consumers ON (Light, Seat Heating, Front/Rear Window Heater, Climate Control)
  • Engine Hood Closed

Conditions (Driving Cycle):

  • Vehicle Speed above 60 km/h (40 MPH)
  • Engine Speed between 2000-2500 RPM (4th or 5th Gear, Automatic Transmission in Tiptronic)
  • Duration approx. 10-15 Minutes
  • Exhaust Gas Temperature before Turbo Charger above 170 °C (MVB 099.2)
  • Exhaust Gas Temperature before Diesel Particle Filter above 150 °C (MVB 099.3)
  • Exhaust Gas Temperature after Diesel Particle Filter above 150 °C (MVB 099.4)

Drive the car based on the above Conditions until the Particle Filter Load is as low as possible (close to 0 %). In case the Regeneration fails there can either be problems with the Driving Cycle Conditions or with the Engine Hardware.

[Select]
[01 - Engine]

[Security Access - 16]

  • Enter the Code shown by VCDS next to Adaptation Enabling (e.g. Regeneration while Driving)

[Do It!]

[Adaptation - 10]

  • Select Channel for Regeneration while Driving

[Read]

  • Enter/Save 1 as new Value.

[Save]
[Done, Go Back]

[Meas. Blocks - 08]
Select Blocks 099 and 108 at once.
[Go!]

MVB 099.2: Exhaust Gas Temperature before Turbo Charger
MVB 099.3: Exhaust Gas Temperature before Particle Filter
MVB 099.4: Exhaust Gas Temperature after Particle Filter

MVB 108.2 or 241.2: Particle Filter Soot Mass (calculated)
MVB 108.3 or 241.3: Particle Filter Soot Mass (measured)

Now Start the Driving Cycle and keep watching the Measuring Blocks (2nd Person required).

[Done, Go Back]
[Close Controller, Go Back - 06]


2.7l/3.0l V6 CR-TDI (CAN)

See Engine specific page.


1.6l/2.0l R4 & 3.0l V6 CR-TDI (UDS)

For engine controllers that use the UDS protocol (as shown on the top left corner of the Open Controller screen), Security Access is not typically needed when Service regeneration of particle filter while standing is supported.

Prerequisites (General):

  • Ignition ON
  • Engine ON (Idle)
  • Fuel Tank at least 1/4 full
  • Transmission in Neutral/Park
  • Coolant Temperature above 70 °C
  • Power Consumers ON (Light, Seat Heating, Front/Rear Window Heater, Climate Control)
  • Engine Hood Closed

[Select]
[01 - Engine]
[Basic Settings - 04]

  • Use the pulldown menu and select Service regeneration of particle filter

[Go!]
[Show Measuring Data]

  • It would be useful to select items such as "Particle filter, soot mass calculated", "Particle filter, soot mass measured", and "Particle filter, time since last regeneration" to observe and verify the progress of the regeneration.
  • Due to the way UDS works, there may be differences in the locations and specific description for the values so you may need to search for the values you need.
  • Follow the Instructions on the Screen. These may include pressing and/or holding the brake, clutch, or accelerator.

[Done, Go Back]
[Close Controller, Go Back - 06]

Note; If Basic Setting Operation Service regeneration of particle filter is not available it may not be supported by the EDC. In those cases Adaptation Channel Service regeneration of particulate filter while driving would be supported instead. A Security Access code may be required for Regeneration while Driving.


4.2l V8 TDI (BMC/BTR/BVN)

See Engine specific page.

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