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When it is safe to do so, stop the vehicle. Perform
manual DPF regeneration in a well ventilated area.
Manual DPF regeneration must be performed outdoors,
as follows. Once manual regeneration is started,
complete the regeneration in a single operation if
possible. If manual regeneration is not completed, as
indicated by the green DPF indicator going off, and the
yellow or red indicator light remains on, automatic
regeneration might not be allowed until the vehicle is
stopped and manual regeneration is performed
until completed.
1. Check engine oil and engine coolant levels to be
sure they are at proper operating levels.
2. To prevent running out of fuel during regeneration,
make sure there is at least a quarter of a tank
of fuel.
3. Check to make sure the area near the exhaust
tailpipe and under the exhaust system is clear of
any materials that could catch fire. Keep people
away from the area of the exhaust system
and exhaust gases.
4. Fully set the parking brake.
5. Shift the transmission to PARK (P) or
NEUTRAL (N).
6. Idle the engine. If you used the idling control knob
to increase the engine speed, restore it all the way
to the left to reduce the engine speed.
7. If the vehicle has Power Take Off (PTO), turn the
PTO off. See Power Take-Off (PTO) on page 2-22.
8. Press the DPF switch on the instrument panel.
See Instrument Panel Overview on page 3-4.
The green DPF indicator light comes on, the exhaust
gas control valve operates, engine idle speed
automatically increases, and DPF regeneration
begins. Do not leave the vehicle unattended during
manual regeneration.
9. When both the green and the yellow or red DPF
indicator lights go off, regeneration is completed.
Regeneration is normally completed in about
30 minutes.
Under certain operating conditions, manual regeneration
might not be able to be performed, even if the soot level
in the DPF requires regeneration. This can occur
because of low coolant temperature, low battery voltage,
or high exhaust temperature or immediately after starting
the vehicle. When manual regeneration is requested, by
pressing the DPF switch, when coolant temperature is
low, engine warm-up is started, the green DPF indicator
light will come on, the exhaust gas control valve operates,
and engine rpm increases to help raise engine coolant
temperature. When operating conditions allow,
regeneration will start.
2-31
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