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Diesel vehicles equipped with a Diesel Particulate Filter (DPF) have more efficient emissions control. The particles in the exhaust gases are collected in the exhaust filter during normal driving.

Cleaning of the exhaust filter, also known as regeneration, occurs automatically between approximately every 186 to 559 miles (300 to 900 km). Cleaning depends on driving conditions and requires the engine to reach its normal operating temperature.

Self-cleaning takes place when the vehicle is driven steadily at speeds between 37 mph to 70 mph (60 km/h to 112 km/h). The process normally takes 10 to 20 minutes. Self-cleaning can occur at lower vehicle speeds, but the process may take a little longer at a 30 mph (48 km/h) average speed.

Exhaust filter self-cleaning:

Some driving conditions, e.g., frequently driving short distances in slow-moving traffic or in cold weather, may not provide sufficient opportunity to begin the exhaust filter self-cleaning automatically. When this occurs, a warning icon is displayed in the instrument panel, depending on status, as follows:

  • Amber: Exhaust filter self-cleaning is required. Driving above 37 mph (60 km/h) for 20 minutes should clean the filter.


    Failure to follow the above driving approach to enable filter self-cleaning may result in reduced vehicle performance. The amber exhaust filter icon is eventually replaced by a red exhaust filter icon. The filter may need to be replaced.

  • Green: Exhaust filter self-cleaning is complete.

  • Red: The exhaust filter is full. Contact a retailer/authorized repairer as soon as possible.


A small increase in fuel consumption may be noticed temporarily during exhaust filter self-cleaning.


If diesel fuel with a high sulfur content is used regularly, the exhaust may emit a cloud of smoke at the start of the self-cleaning process. The smoke is a result of the sulfur deposit being burnt off and is no cause for concern. Only use ultra-low sulfur diesel fuel.