Diesel particulate filter (DPF)

The diesel particulate filter (DPF) is a device that captures most of the particulate matter (PM) in the exhaust emissions of the diesel engine. The DPF automatically burns away trapped PM during vehicle operation. Under certain driving conditions, however, the DPF is not able to burn away all of the trapped PM and, as a result, an excessive amount of PM accumulates inside it.

WARNING

The DPF reaches very high temperatures.

Do not park your vehicle in areas where combustible materials such as dry grass or leaves can come in contact with a hot exhaust system since a fire could occur.

CAUTION

• Do not use any type of fuel or engine oil that is not specified for your vehicle. Also, do not use any moisture-removing agent or other fuel additive. Such substances could have a detrimental effect on the DPF.

Refer to “Fuel selection” on page 02 and “Engine oil”.

NOTE

• To minimize the likelihood of excessive accumulation of PM, try to avoid driving for long periods at low speeds and repeatedly driving short distances.

• The engine sounds slightly different than usual while the DPF automatically burns away trapped PM. The change in the engine sound does not indicate a fault.

DPF warning display

The DPF warning display illuminates in the event of an abnormality in the DPF system.

If the DPF warning display illuminates during vehicle operation

Steady illumination of the DPF warning display shows that the DPF has not been able to burn away all of the trapped PM and that, as a result, an excessive amount of PM has accumulated inside it. To enable the DPF to burn away the PM, try to drive the vehicle as follows:

• With the bar graph of engine coolant temperature display stabilized in roughly the middle of the scale, drive for about 20 minutes at a speed of at least 40 km/h (25 mph).

If the DPF warning display subsequently stays on, contact a MITSUBISHI MOTORS Authorized Service Point.

CAUTION

• You do not have to continuously drive exactly as indicated above. Always strive to drive safely in accordance with road conditions.

If the DPF warning display and check engine warning lamp illuminate at the same time during vehicle operation

If an abnormal condition occurs in the DPF system, the DPF warning display and check engine warning lamp illuminate.

Have the system inspected at a MITSUBISHI MOTORS Authorized Service Point.

CAUTION

• Continuing to drive with the DPF warning display and check engine warning lamp illuminating could result in engine trouble and DPF damage.