Frelander 2. Manual - part 384
the DPF temperature.
Instrument Cluster Indications
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.
Item
Part Number
Description
1
-
'DPF FULL' message
2
-
'DPF FULL VISIT DEALER' message
The driver will be alerted to this condition by a message 'DPF FULL' accompanied by a handbook symbol. 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 a further 20 minutes at speeds of not less than 30 mph (48 km/h). Successful regeneration of the DPF is indicated
to the driver by the 'DPF FULL' message no longer being displayed. If the DPF software detects that the DPF is still
blocked, the message will change to 'DPF FULL VISIT DEALER', the driver should take the vehicle to an authorized dealer to
have the DPF force regenerated.
Diesel Particulate Filter Side Effects
The following section details some side effects caused by the active regeneration process.
Engine Oil Dilution
Engine oil dilution can occur due to small amounts of fuel entering the engine crankcase during the post-injection phases.
This has made it necessary to introduce a calculation based on driving style to reduce oil service intervals if necessary.
The driver is alerted to the oil service by a message in the instrument cluster.
The DPF software monitors the driving style and the frequency of the active regeneration and duration. Using this
information a calculation can be made on the engine oil dilution. When the DPF software calculates the engine oil dilution
has reached a predetermined threshold (fuel being 7% of engine oil volume) a service message is displayed in the
instrument cluster.
Depending on driving style, some vehicles may require an oil service before the designated interval. If an service message
is displayed, the vehicle will be required have a full service and the service interval counter will be reset.
Fuel consumption
During the active regeneration process of the DPF, there will be an increase in fuel consumption. However, because active
regeneration occurs infrequently and for limited periods of time, the overall effect on fuel consumption is approximately
2%. The additional fuel used during the active regeneration process is accounted for in the instantaneous and average fuel
consumption displays in the instrument cluster.