Jaguar XJ - Manual (Page 152)

L
(FM8) SEMCON JLR OWNER GUIDE VER 1.00 EURO
LANGUAGE: english-en; MARQUE: jaguar; MODEL: XJ
Maintenance
152
DIESEL PARTICULATE FILTER (DPF)
Diesel vehicles equipped with a particulate filter
have more efficient emission control. The
particles in the exhaust gases are collected in
the filter during normal driving.
When a DPF message is displayed, the filter
requires a regeneration cycle to clean itself.
This requires the engine to have reached
normal operating temperature. Regeneration
takes place automatically at an interval of
approximately 300-900 km (190-560 miles)
depending on driving conditions.
REGENERATION PROCEDURE
The regeneration procedure produces
high temperatures in the DPF. Heat can
be felt radiating from beneath the
vehicle, which is normal. The heat
generated could be sufficient to start a
fire when in close proximity to
combustible material such as long dry
grass, paper etc.
Regeneration normally takes 10-20 minutes
and is best achieved if the vehicle is driven
steadily at speeds between 60 km/h (40 mph)
and 112 km/h (70 mph).
Regeneration may take longer if the average
speed is reduced to 50 km/h (30 mph).
DRIVING SHORT DISTANCES OR IN
COLD WEATHER
In these conditions the engine may not reach
normal operating temperature. Regeneration of
the diesel particle filter will not take place and
the filter will not be cleaned. If the filter requires
regeneration but current driving style is not
appropriate to perform it, a warning triangle
will illuminate on the instrument panel and the
message DPF Full. See manual, will be
displayed. This does not indicate a fault
condition. Start regeneration by driving the
vehicle, preferably on a main road or
motorway. The vehicle should be driven for
approximately 20 minutes more.
When regeneration is complete, the warnings
will clear.
ARDUOUS DRIVING CONDITIONS
If the vehicle is frequently driven short
distances in cold weather then the engine may
not reach normal operating temperature. This
means that regeneration of the diesel particle
filter does not take place and the filter is not
cleaned. When the filter reaches approximately
80% capacity, a warning triangle on the
instrument panel illuminates, and the message
DPF FULL SEE HANDBOOK is displayed on the
instrument panel. Start regeneration of the
filter by driving the vehicle, preferably on a
main road or motorway. The vehicle should
then be driven for approximately 20 minutes
more. Where possible the parking heater
should be used in cold weather so that the
engine reaches normal operating temperature
more quickly.
When regeneration is complete the warning
text is cleared automatically.
Note: A small reduction in engine power, and
increase in fuel consumption may be noticed
temporarily during regeneration.