Operation Manual

Catalytic converter, exhaust em issions 131
Catalytic converter for diesel
engines
Damage to the catalytic converter or the
vehicle may result if the following points
are not observed:
z Consult a w orkshop as quickly as
possible in the event of irregular engine
running, a significant loss of engine
power or other unusual malfunctions. If
necessary, driving m ay be continued for
a short time at a low sp eed and with a
lo w en gi n e spe ed.
Picture no: s0013254.tif
Controlling exhaust em ission
Through design-related measures - mainly
in the area of the mixture formation
system - the proportion of noxious
materials in the exhaust, such as carbon
monoxide (CO), hydrocarbons (CH) and
nitrogen oxides (NO
x
), is reduced to a
minimum.
Picture no: s0013632.tif
C ont rol indic ator Z for exhaust
If control indicator Z is illuminated while
the engine is running, there is a fault in the
emission control system or with the diesel
particle filter 3. The pe rmitted emission
values may be exceeded. Consult a
workshop.
Flashing with the engine running indicates
a fault that may damage the catalytic
converter. The vehicle’s electronic system
will switch to an emergency running
programm e so you m ay continue to drive
without causing damage by slowing down
until the flashing stops and the control
indicator is steady. Consult a workshop
immediately.