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ELECTRONIC ENGINE CONTROLS
ENGINE-TDV8 4.4L DIESEL
EXHAUST SYSTEM
FUEL LINE DIEZEL
For drivers who make regular short journeys at low speeds, it may not be possible to efficiently regenerate the DPF. In this case, the DPF software will detect a blockage of the DPF from signals from the differential pressure sensor and will alert the driver as follows: The driver will be alerted to this condition by a message 'EXHAUST FILTER NEARLY FULL'. See 'HANDBOOK'. As detailed in the Owners Handbook, the driver should drive the vehicle until the engine is at its normal operating temperature and then drive for approximately a further 20 minutes at speeds between 60 km/h to 120 km/h (40 mph to 70 mph). It is possible that the regeneration process will occur at lower speeds, but the events may take longer at a 48 km/h (30 mph) average speed. Successful regeneration of the DPF is indicated to the driver by the 'EXHAUST FILTER NEARLY FULL' message no longer being displayed. If the DPF software detects that the DPF is still blocked, the message will continue to be displayed or an additional message 'EXHAUST FILTER FULL VISIT DEALER' will be displayed. The driver should take the vehicle to an authorized dealer to have the DPF force regenerated using an approved diagnostic system. If, due to vehicle usage and/or driving style, the active regeneration process cannot take place or is unable to regenerate the DPF, the dealer can force regenerate the DPF.
This is achieved by driving the vehicle until the engine is at its normal operating temperature and then driving for approximately a further 20 minutes at speeds between 60 km/h to 120 km/h (40 mph to 70 mph). It is possible that the regeneration process will occur at lower speeds, but the events may take longer at a 48 km/h (30 mph) average speed.
