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Tuesday, 05.07.2022, 10:36

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.