5-37
CAUTION
You must neither change the length and direc-
tion of the exhaust pipe and muffler, nor modify
the DPF and exhaust brake. Since the exhaust
gases are extremely hot (hot enough to remove
particulate matter by oxidation inside the DPF),
such changes could cause a fire or burn you.
Furthermore, such changes would degrade the
exhaust emission control performance of your
vehicle and cause the DPF to malfunction.
1 Automatic DPF regeneration
The system actively removes PM by oxidation to
prevent an overfilled DPF under automatic control.
The operating sound and idling speed of the engine
will change but you can drive the vehicle in its nor-
mal manner.
NOTE:
• During the automatic DPF regeneration, there
may be a change in engine operating sound
and, when your vehicle is in park, a rise in idling
speed (to approx. 700 to 800 rpm) accompanied
by exhaust brake valve operation. These do not
indicate any abnormalities.
• Exhaust temperature is higher when the auto-
matic DPF regeneration is taking place.
PM accu-
mulation
Vehicle condition DPF regeneration/inspection
Ref.
page
Small
Large
Normal speed driving During high-speed or high-load driving,
filter trapped PM is removed continuously
by oxidation (continuous regeneration).
Automatic DPF
regeneration
When PM accumulates to a predeter-
mined amount, it is actively removed by
oxidation (automatic regeneration).
5-37
The indicator
lamp flashes
(frequency varies with degree
of PM accumulation)
You must bring the vehicle to a stop and
perform the appropriate procedure to
clean out DPF (parked regeneration).
5-38
Red warning lamp
illuminates
The engine output is automatically lim-
ited. Have your vehicle inspected by an
authorized dealer.
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FKFM.book Page 37 Wednesday, January 28, 2009 9:21 AM
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