Audi TT Diesel Particulate Filter DPF

The Diesel Particulate Filter (DPF) on Audi TT diesel vehicles is an anti-pollution device designed to capture fine soot particles from diesel combustion. It uses a porous ceramic substrate, usually made of cordierite, integrated into the exhaust system after the catalytic converter. This filter can reduce emissions by 85% to nearly 100% under optimal conditions.

DPF regeneration is the process of burning off trapped soot to clean the filter and restore optimal function. There are three types:

• Passive regeneration: Occurs naturally on highways at high exhaust temperatures (350-500°C), burning soot without electronic intervention.
• Active regeneration: Managed by the vehicle's electronics, it temporarily raises exhaust gas temperatures in city driving or low-speed conditions to burn soot automatically, usually triggered every 750-1000 km.
• Forced regeneration: Requires special diagnostic tools (e.g., VCDS/VAG-COM). It can be done while stationary (for 30-40g soot load) or driving at 60-80 km/h for 25-30 minutes (for 40-45g soot load).

The maximum soot capacity before cleaning is approximately 60g of ashes under Euro 4/5 standards.

Common causes for DPF clogging include frequent short trips and city driving at low speeds (below 60 km/h) which prevent the engine and exhaust from reaching the temperature needed for soot to burn off naturally.

• DPF warning light or engine fault light activation indicating soot accumulation above 24g
• Loss of engine power and increased fuel consumption
• Visible smoke from exhaust
• Preheating light and error messages if the issue persists

Faulty differential pressure sensors may also trigger errors and contribute to ineffective soot removal if the vehicle is not driven regularly on highways.

To maintain your DPF and prevent clogging, it is recommended to add dedicated DPF additives to the fuel tank which help fluidify soot. Additionally, a 25-30 minute drive at speeds of 60-80 km/h (such as on a highway) helps initiate passive regeneration.

In emergency cases, regeneration can be triggered using diagnostic tools like VCDS/VAG-COM that activate cleaning cycles either while stationary or driving.

The DPF generally requires replacement after approximately 100,000 km if it becomes irreparable due to excess clogging or damage.

• Replacement parts comply with manufacturer and European regulations, made from high-quality ceramic and stainless steel housing.
• Replacement should be done in specialized garages following proper installation protocols.
• It is also advised to replace upstream and downstream catalytic converters if they exist when changing the DPF.

Krosfou offers original-quality new DPF products with 3-year warranty and European certification to ensure compatibility and durability.

Yes, providing the vehicle identification number (VIN) allows precise confirmation of product fitment including engine type, power output, and Euro emissions standard compatibility. However, correct sensor positioning is guaranteed only after proper installation.

• Always verify DPF compatibility with your vehicle's VIN before ordering.
• Consult technical support if unsure about fitment or installation details.

This ensures you get the exact DPF housing and assembly designed for your Audi TT diesel vehicle.

Krosfou DPFs come with a 3-year warranty limited to 100,000 km of use. Warranty conditions require installation by specialized garages, adherence to proper assembly instructions, and elimination of defects causing damage.

• Free returns within 30 days for unused products in original packaging (only for deliveries within Europe).
• Used or installed parts are excluded from return and warranty coverage.
• Warranty does not cover faults caused by negligence or improper use, such as persistent clogging.

Support and warranty claims are managed through Krosfou’s technical services with documented evidence.

Krosfou provides technical support via email for installation manuals, guidance on product selection, and troubleshooting questions. You can also confirm product compatibility with your VIN and receive advice on diagnostic tools and regeneration procedures.

• Installation guides available for most product references.
• Technical support ensures documented and reliable assistance.
• Professional garages and specialized workshops are recommended for installation and DPF maintenance.

For more detailed information, experts recommend regular checks and proper vehicle use to maximize DPF life and performance.