Diesel ageing
Please refer to and on page 293.
C
ompared to other fuel types, fuels with
a high biodiesel content (> 7 vol.%) may
have a higher water absorption capacity
and tend to age (decompose) more rapidly
due to lower oxidation resistance. Water
and dirt promote microbial activity and ac-
celerate fuel ageing, which can lead to the
vehicle's fuel system being damaged.
Perform the following actions to avoid
damaging the vehicle’s fuel system.
If the vehicle is stationary as from two
weeks:
1. Fill fuel tank to maximum level.
2. Start the vehicle at least once a week
for around five minutes.
If the vehicle is stationary as from 45 days:
1. Diesel fuel in the fuel tank may have
aged →
.
2.
You must replace the diesel in the fuel
tank and fuel filter before starting the
engine again. The diesel and the fuel fil-
ter should be changed by a suitably
qualified workshop.
NOTICE
If the diesel fuel contains water or is de-
c
omposed and the engine is started, this
can cause serious damage to the fuel sys-
tem.
·
If water has settled in the fuel filter, it
must always be drained.
·
Always fill up with high-quality diesel fuel
that meets the required specifications.
Water and diesel fuel must never be
disposed of in gardens, forests, sew-
a
ge systems, roads or paths, rivers or run-
ning waters. In order to avoid environmen-
tal pollution, disposal must be carried out
by a suitably qualified workshop.
Troubleshooting
Please refer to and on page 293.
Fuel tank almost empty
The indicator lamp lights up yellow. The re-
serve volume (red marking) is being c
on-
sumed .
1. Refuel at the next opportunity
→ page 297.
Depending on equipment: when the
indi-
c
ator lamp lights up, the auxiliary heater
and the fuel-powered supplementary heat-
er switch o automatically.
Water in the diesel fuel
The indicator lamp lights up yellow.
1.
Reduce speed immediately and go to
a suitably qualified workshop.
Or: if the indicator lamp lights up at the
start of the journey immediately aer
the last refuelling,
do not c
ontinue
driving! Switch o the engine and go
to a qualified workshop immediately.
WARNING
When the fuel level is too low, the fuel
supply to the engine c
ould be irregular
and lead to the engine stuttering or
switching o, especially when driving up
or down hills and inclines. The steering, all
driver assist systems and brake support
systems will not function if the engine
stops due to a lack of fuel or irregular fuel
supply. This can cause breakdowns in
trac, accidents and serious or fatal inju-
ries.
·
Check that the fuel tank is always su-
ciently filled.
·
Always refuel if the fuel tank is only 1/4
full.
NOTICE
Irregular fuel supply can cause misfiring
and allow unburnt fuel to enter the exha
ust
system.
·
Never run the fuel tank completely dry.
298 Fuel and emission control
To Next Page
Loading...
