Regeneration
Unlike a normal filter which requires periodic replacement, the DPF has
been designed to regenerate, or clean itself to maintain operating
efficiency. The regeneration process takes place automatically. A small
increase in engine/turbo sound-level is normal during filter regeneration.
However, some driving conditions mean that you may need to support
the regeneration process:
• Operating in stop-and-go traffic or maintaining low speeds as in city
or delivery driving
• Frequent engine starting and stopping
• Relatively light vehicle payload
• Regular operation in cold ambient temperatures (i.e., below 0°F
[-18°C]).
Diesel Particulate Filter Four–level Loading Chart
Level/Lamp status Filter status Requested action
Level 1
solid
Regeneration required. Drive on the highway
at highway speeds OR
start parked
regeneration to
prevent loss of engine
performance.
Level 2
flashing
(once per second)
Nearly full. Engine
performance is limited.
Level 3
flashing + solid
Full. Engine
performance is
increasingly limited.
Perform parked
regeneration to
prevent loss of engine
performance.
Level 4
solid
Over full. Engine
performance is highly
limited. Continued
operation may result
in irreparable damage
to the filter.
Pull vehicle safely off
roadway, turn on
hazard flashers and
shut down engine as
soon as possible. Seek
service immediately.
Starting and Stopping the Engine 107
2013 F-650/750 (f67)
Owners Guide gf, 2nd Printing, March 2013
USA (fus)
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