A Diesel Particulate Filter (DPF) is a crucial component in modern diesel vehicles, responsible for trapping soot and other harmful particles from the exhaust gases. Over time, the DPF can become clogged, requiring a regeneration process to burn off the accumulated soot. This guide explains how to perform a Partikelfilter Regenerieren Mit Vcds (DPF regeneration with VCDS), a powerful diagnostic tool for VAG (Volkswagen Audi Group) vehicles.
Understanding DPF Regeneration with VCDS
VCDS (Vag-Com Diagnostic System) allows you to initiate a forced DPF regeneration, crucial when regular driving conditions don’t allow for natural regeneration. This process involves raising the exhaust temperature to burn off the accumulated soot. While a workshop procedure, understanding the process and prerequisites is essential. Different engine types require specific procedures, outlined below. Always consult your vehicle’s repair manual for specific instructions.
DPF Forced Regeneration for 1.4l/1.9l/2.0l/2.5l PD TDI Engines
Prerequisites:
- Ignition ON.
- Engine idling.
- Oil temperature above 50°C.
- DPF soot load (Measuring Block 75, Value 3) below the specified maximum. Exceeding this limit necessitates DPF replacement to prevent fire hazards during regeneration.
- Activate as many electrical consumers as possible (e.g., lights, rear window defroster, air conditioning).
Procedure:
- Connect VCDS to your vehicle’s OBD-II port.
- Select [Control Unit Selection] then [01 – Engine].
- Go to [Coding-II – 11] and enter 21295 to start regeneration. Confirm the input.
- Monitor the regeneration process using [Measuring Blocks – 08], selecting Blocks 70 and 75. Key values include:
- MWB 70.1: Regeneration status.
- MWB 70.3: Regeneration timer.
- MWB 75.3: Soot load level.
Driving Requirements:
- Maintain a speed of 30-60 km/h.
- Keep engine speed between 1500 and 2500 rpm.
- Ensure exhaust gas temperature in the exhaust manifold exceeds 700°C. The regeneration can take up to 20 minutes. Continue driving until the soot load is as close to 0% as possible. Caution: High temperatures can develop on the exhaust system.
DPF Forced Regeneration for 2.7l/3.0l TDI V6 Engines
Prerequisites:
- Ignition ON.
- Engine idling.
- Oil temperature above 70°C.
- DPF soot load below 68g (Measuring Block 104, Field 3). Exceeding this necessitates DPF replacement due to fire risk.
- Engine hood closed.
- Parking brake engaged.
- Gearbox in neutral/park position.
- Fault memory of the engine control unit clear.
- Activate as many electrical consumers as possible.
Procedure:
- Connect VCDS and select [01 – Engine].
- Navigate to [Coding-II – 11] and enter 10016 to initiate regeneration. Confirm the input.
- Monitor using [Measuring Blocks – 08], selecting Blocks 100, 101, and 102. The regeneration can take up to 40 minutes, with engine speed rising to approximately 1500 rpm. Caution: High temperatures will develop on the exhaust system.
DPF soot load limits for different regeneration types. Example: 2.0 CR TDI 103kW, engine code CFFB.
DPF Forced Regeneration for 1.6l/2.0l R4 CR-TDI (CAN) and 1.6l/2.0l R4 & 2.7/3.0l V6 CR-TDI (UDS) Engines
These engines utilize different regeneration strategies depending on soot load, with options for stationary and driving regeneration. Specific procedures and prerequisites vary based on the engine control unit and soot load. Refer to your vehicle’s repair manual for detailed instructions. Generally, procedures involve accessing Security Access (for CAN systems) or Basic Settings using VCDS, initiating regeneration, and monitoring relevant measuring blocks. Always adhere to the specified conditions and safety precautions.
Important Considerations for DPF Regeneration
Before attempting a forced DPF regeneration, ensure you understand the process and potential risks. Incorrect procedures can damage the DPF or other components. Always prioritize safety and consult your vehicle’s repair manual. Address any underlying issues contributing to excessive DPF clogging. Regular maintenance and proper driving habits can help prevent future DPF issues. Using VCDS for partikelfilter regenerieren offers a valuable solution for addressing DPF clogging. However, it’s crucial to follow the correct procedures and exercise caution throughout the process.
