Renault Laguna Diesel Particulate Filter DPF

The Diesel Particulate Filter (DPF) in Renault Laguna models is an exhaust component designed to capture and remove fine diesel soot particles. It operates by regenerating the trapped soot at around 550°C to reduce pollution and comply with Euro 4 emission standards. The DPF is used on various Laguna models, including the Laguna II 1.9 dCi and Laguna III 2.0 dCi engines.

The DPF is fitted on several Renault Laguna diesel engines including:

• Laguna III (2007-2012) with 2.0 dCi engines (M9R code) ranging from 130 cv to 178 cv. The DPF dimensions are approximately 740 mm in length and 6 kg in weight.
• Laguna II (2005-2007) with the 1.9 dCi engine (F9Q code) producing 130 cv.

Each DPF has specific Original Equipment (OE) references and compatible parts supplied by trusted manufacturers.

The DPF cleans itself by burning off soot particles during a regeneration process at around 550°C. If the filter becomes heavily blocked, forced regeneration can be initiated via engine reprogramming to clean the DPF.

• Regular maintenance intervals range approximately from 105,000 km to 165,000 km depending on the model and driving conditions.
• Short trips may cause soot buildup, necessitating earlier cleaning or replacement.

Using additives and proper driving management can support effective regeneration and prolong DPF life.

Common issues include a warning light on the dashboard, often related to a clogged EGR valve affecting injection management. Symptoms are typically:

• Blocked or reduced performance of the DPF.
• Frequent warning lights indicating injection or pollution control issues.
• Reduced engine performance due to soot accumulation and blocked filter.

Regularly checking engine codes and the vehicle's management system via an OBD scanner helps diagnose these issues early.

Replacement DPFs are available as brand-new units, manufactured in Europe with high-quality stainless steel and ceramics, backed by a 3-year warranty. Typical pricing is around 199.90 € with installation kits often included.

• DIY repair guides and tutorial videos assist with cleaning or replacing the DPF on Renault Laguna.
• Cleaning options include additive treatment or forced regeneration via diagnostic tools.

Professional advice is recommended to ensure proper fitting and compliance with anti-pollution regulations.

Removing or bypassing the DPF is a method sometimes discussed but is illegal in many countries, including France, due to non-compliance with Euro 4 emission standards.

• Removal involves mechanical emptying of the DPF and remapping the engine control unit to prevent error codes.
• This practice is increasingly scrutinised as it infringes on environmental laws and can lead to vehicle inspection failures.

It is advised to maintain or replace the DPF rather than removing it to ensure environmental compliance and vehicle performance.

Renewed DPFs are supplied by certified European manufacturers. These DPFs are new parts made with high-grade INOX 409 stainless steel and advanced ceramic monolith technology. They comply with the highest automotive standards, including TÜV SÜD certification, ensuring superior or equal quality compared to original parts.

• The suppliers follow strict manufacturing and quality control to ensure durability and performance.
• The parts come with a 3-year warranty and support from factory technical experts.

This direct-from-factory supply model guarantees reliability and environmental compliance for your Renault Laguna.

There are several online platforms and communities providing detailed guides, video tutorials, and user experiences on Renault Laguna DPF maintenance, regeneration, and replacement:

• Specialist sites offer precise technical specifications and fitting advice for DPF parts.
• Car owner forums discuss common issues, coding, and defap debates.
• Technical support is also available through professional accounts, offering catalogs, discount programs, and installation manuals.

For diagnostics, using an OBD scanner and consulting a qualified garage is recommended to ensure correct management of diesel particulate filter issues.

Always check your engine code and vehicle year for compatible DPF references before ordering or undertaking repairs.