CITROEN C4 Aircross 2013 Owner's Handbook Manual page 41

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Cause
Fault with the CVT gearbox.
The temperature of the four wheel
drive transmission system is too
high.
The fuel level is low.
The low level of the particle
emissions filter additive reservoir
has been reached.
Start of saturation of the particle
emissions filter.
The particle emissions filter is
faulty.
Solution - Action
Contact a CITROËN dealer or a
qualified workshop.
Stop the vehicle and contact a
CITROËN dealer or a qualified
workshop.
Refuel as soon as possible.
Have the reservoir topped up as
soon as possible by a CITROËN
dealer or a qualified workshop.
As soon as the driving conditions
allow, regenerate the filter by driving
at a speed of at least 25 mph
(40 km/h) for around 20 minutes (with
the 1.6 litre HDi engine the minimum
speed is 36 mph (60 km/h)).
Stop as soon as it is safe to do so.
Monitoring
Observations
The vehicle changes automatically
to two wheel drive (2WD).
Only for the 1.6 litre HDi engine.
If the message remains on,
contact a CITROËN or a qualified
workshop.
Contact a CITROËN dealer or a
qualified workshop as soon as
possible.
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