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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 is also known as regeneration. The cleaning occurs automatically, approximately every 300 to 900 km, depending 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 60 km/h and 112 km/h (37 mph and 70 mph). 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 50 km/h (30 mph) average speed.

Exhaust filter self-cleaning:

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

Exhaust filter warning icon.

  • Amber: Exhaust filter self-cleaning is required. Driving above 60 km/h (37 mph) 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. A red exhaust filter icon replaces the amber exhaust filter icon, indicating that the filter is full and may need replacing.

  • Green: Exhaust filter self-cleaning is complete.

  • Red: The exhaust filter is full. Contact a retailer/authorised 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 sulphur 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 sulphur deposit being burnt off and is no cause for concern. If possible, only use low sulphur diesel fuel.