Seat Ibiza Owner's Manual page 152

CAUTION
Never run the fuel tank completely dry be-
cause the irregularity 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
working 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*
Vehicle data sticker on back cover of
Fig. 147
the Maintenance Programme.
150
Operation
Your vehicle is fitted with a DPF (Diesel Partic-
ulate Filter) if the vehicle data sticker (back
cover of the "Maintenance Programme") lists
›››
Fig. 147.
the code PR 7GG
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.
Accumulation of soot in the diesel engine
particulate filter* 
If the control lamp  lights up you should
help the filter clean itself by driving in the ap-
propriate manner.
You should drive at a speed of at least
60 km/h (37 mph) for about 15 minutes in
4th or 5th gear at an engine speed of around
2,000 rpm. In this way, the soot build up in
the filter is burned. When cleaning is suc-
cessful, the control lamp turns off.
If the lamp  does not turn off, or the three
lamps turn on (particulate filter , fault in
the emission control system  and glow
plugs ), drive the vehicle to a specialised
workshop and have the fault repaired at the
earliest opportunity.
WARNING
Always drive according to the road weather
conditions, the terrain and traffic. Driving rec-
ommendations should never lead to illegal
manoeuvres in surrounding traffic.
CAUTION
● Your vehicle is not designed to use biodie-
sel fuel. Never, under any circumstances re-
fuel with biodiesel. The use of biodiesel fuel
could damage the engine and the fuel sys-
tem. The addition of biodiesel to diesel by
the diesel producer in accordance with stand-
ard EN 590 is authorised and will not cause
damage to the engine or the fuel system.
Using diesel fuel with a high sulphur con-
●
tent may significantly reduce the useful life of
the diesel particulate filter. Your Technical
Service will be able to tell you which coun-
tries have diesel with a high sulphur content.
Engine management* 
This warning lamp monitors the engine man-
agement system for petrol engines.
The warning lamp  (Electronic Power Con-
trol) lights up when the ignition is switched
on while system operation is being verified. It
should go out once the engine is started.