Dpf Service; Dpf Safety - Autel MOT Pro Manual

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DPF Service

DPF Safety

The DPF function allows you to carry out numerous functions on the Diesel
Particulate Filter system without having to send the car to a main dealer. The
tool will retrieve/erase DPF-related codes, reset the DPF light after the filter
has been replaced, micromanage the injection rate, and burn off collected
particles when a maximum fill level is reached by performing a static
/dynamic regeneration.
ECM monitors driving style and selects a suitable time to employ
regeneration. Cars driven a lot at idling speed and low load will attempt to
regenerate earlier than cars driven more with high loads and engine speeds.
In order for regeneration to take place, a prolonged high exhaust
temperature must be attained.
In the event of the car being driven in such a way that regeneration is not
possible, i.e. frequent short journeys, a diagnostic trouble code will
eventually be registered, DPF light and "Check Engine" indicator come on.
A service regeneration can be requested in the workshop, using the
diagnostic tool.
Before carrying out a forced DPF regeneration using the tool, check the
following items:

The fuel light is not on.

No DPF-relevant faults stored in system.

The vehicle has the correct spec engine oil.

The oil for diesel is not contaminated.
IMPORTANT
1. Before diagnosing a problem vehicle and attempting to perform an
emergency regeneration, it is important to obtain a full diagnostic log
and read out relevant measured value blocks.
2. The DPF will not regenerate if the engine management light is on, or
there is a faulty EGR valve.
3. The ECU must be re-adapted when replacing the DPF and when
topping up the fuel additive Eolys.
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