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Driving
exhaust can come into contact with flamma-
ble m
aterials under the car (e.g. on grass or
at the forest edge). Fire hazard!
●
Do not apply wax underneath the vehicle
around the area of the exhaust system: Fire
hazard!
Note
While the control lamps , , or r
e-
main lit, ther
e may be engine problems, fuel
consumption may increase and the engine
may lose power.
Catalytic converter
To maintain the useful life of the catalytic
c
on
v
erter
–
Use only unleaded petrol with petrol en-
gines, as lead damages the catalytic con-
verter.
–
Do not let the fuel get too low in the tank.
–
For engine oil changes, do not replenish
with too much engine oil ››› page 203, Top-
ping up engine oil.
–
Never tow the vehicle to start it, use jump
leads if necessary ›››
page 52.
If you notice misfiring, uneven running or
loss of power when the vehicle is moving, re-
duce speed immediately and have the vehi-
cle inspected at the nearest specialised
workshop. In general, the exhaust warning
lamp will light up when any of the described
symptoms occur ››› page 98. If this happens,
unburnt fuel can enter the exhaust system
and escape into the environment. The cata-
lytic converter can also be damaged by over-
heating.
CAUTION
Never run the fuel tank completely dry be-
cause the irr
egularity of the fuel supply may
cause ignition problems. This allows unburnt
fuel to enter the exhaust system, which could
cause overheating and damage the catalytic
converter.
For the sake of the environment
Even when the emission control system is
workin
g perfectly, there may be a smell of
sulphur from the exhaust gas under some
conditions. This depends on the sulphur con-
tent of the fuel used. Quite often the problem
can be solved by changing to another brand
of fuel.
Diesel engine particulate filter*
Fig. 161 Vehicle data sticker on back cover of
the M
aint
en
ance Programme.
Your vehicle is fitted with a DPF (Diesel Partic-
u
l
at
e Filter) if the vehicle data sticker (back
cover of the “Maintenance Programme”) lists
the code PR 7GG ››› Fig. 161.
The diesel engine particulate filter eliminates
most of the soot from the exhaust gas sys-
tem. Under normal driving conditions, the fil-
ter cleans itself. If this is not possible (for ex-
ample, multiple short trips) the filter will be
obstructed by soot and the diesel engine
particulate filter warning lamp will light up.
This does not represent a fault, it is a warning
that indicates that the filter has not been
able to regenerate automatically and that you
must perform a cleaning cycle, as indicated
below.
»
167
Technical dataAdviceOperationEmergenciesSafety
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