Renault Scenic / Grand Scenic Diesel Particulate Filter DPF

The Diesel Particulate Filter (DPF) on Renault Scenic and Grand Scenic models is part of the diesel exhaust system that traps harmful soot particles such as carbon, hydrocarbons, and sulfates to reduce pollution emissions. It is located after the catalytic converter and uses passive or active regeneration processes to burn off the trapped particulates and clean the filter.

Renault's active DPF regeneration involves a fifth injector in the exhaust line that injects diesel fuel when sensors detect a pressure difference indicating filter clogging. This raises the temperature in the filter to around 500°C to burn off soot, regardless of vehicle speed or engine status. This process usually lasts about 15 minutes at engine speeds over 1500 rpm but can be interrupted and may not always resume automatically.

Short trips or frequent urban driving can prevent the DPF from fully regenerating, causing soot build-up and possible clogging. This can lead to poor engine performance and even engine failure. Drivers who mostly drive in the city or cover low mileage—such as retirees—are more prone to these problems.

• Incomplete regeneration causes soot accumulation
• Potential engine warning lights and reduced performance
• Possible costly repairs if left unresolved

Regular longer drives at higher speeds are recommended to maintain the DPF's health.

Not all Renault Scenic petrol models have a DPF, but most diesel versions from Euro 4/5 standards onwards are fitted with one. For example, in the Scenic 4 range:

• 1.3 TCe 115 cv – DPF present
• 1.5 dCi 110 Hybrid – DPF present
• 1.2 TCe 115/130 cv – DPF not present

It is advisable to check the vehicle identification number (VIN) or consult the owner's manual for specific model details.

Replacing the DPF on a Scenic diesel model typically involves around 3 hours of labour. The part costs vary between approximately €500 and €1,500 depending on the engine and version. Replacement requires draining fluids and removing parts of the exhaust line.

• Professional or experienced DIY level recommended
• Basic tools such as wrenches and lifting equipment needed
• Use of genuine DPF parts ensures quality and warranty coverage

Some models may also use fuel additives to assist lower combustion temperatures during regeneration.

The vehicle’s dashboard will generally display a "Service" warning light along with messages about clogging when the DPF begins to saturate. Early signs include reduced power, increased fuel consumption, and the need for forced regeneration.

• Check DPF pressure and temperature sensors for fault codes
• Garage diagnostics with OBD readers, such as Renault CLIP, recommended
• Ensure exhaust gas recirculation and injection systems are functioning correctly

Timely detection helps prevent engine damage and expensive repairs.

Certain alternatives include professional chemical cleaning or ECU reprogramming to manage soot levels and regeneration. These methods may be cheaper and simpler but come with risks such as engine oil dilution and potentially reduced engine life.

• Chemical or ultrasonic cleaning can restore some filter efficiency
• Reprogramming the engine control unit might delay filter replacement
• Both options require expert evaluation and carry potential risks

Consult a qualified technician to assess the best approach for your vehicle.

For comprehensive guidance, including manuals, tutorials and user forums, consider the following resources :

• User forums dedicated to Renault Scenic and diesel DPF issues
• Official technical repair guides and diagnostic manuals
• Online videos illustrating step-by-step DPF removal and replacement

Use specific search terms including the year and engine type (e.g., "DPF Scenic 3 1.5 dCi 2015 tutorial replacement") for best results. Diagnostic tools like Renault CLIP can read pressure and error codes from sensors.

Our high-quality Renault DPF products come with a 3-year warranty and meet strict European standards, ensuring durability and performance.