Operation
●
Refuelling just once with leaded petrol dis-
ables the exhaust system! Economical and environmentally
friendly driving
Fuel consumption, environmental pollution
and wear to the engine, brakes and tyres de-
pends in large part on your driving style. By
adopting an economical driving style and an-
ticipating the traffic situation ahead, you can
easily reduce fuel consumption by 10-15%.
Some tips on how to help you reduce pollu-
tion while saving money are listed below.
Drive anticipating the traffic situation
A vehicle uses most fuel when accelerating.
When you anticipate situations, you have to
brake less often and, thus, accelerate less. If
it is possible, let the vehicle roll with a
gear
engaged , for example, if you see a red light
ahe a
d. The braking effect achieved in this
way helps to reduce the wear of brakes and
tyres; emissions and fuel consumption are
reduced to zero (disconnection due to iner-
tia).
Change gear early to save energy
An effective way of saving fuel is to change
up
quickly through the gears. Running the
engine at high rpm in the lower gears uses
an unnecessary amount of fuel. Manual gearbox:
shift up from first to second
gear as soon as possible. We recommend
that, whenever possible, you change to a
higher gear upon reaching 2000 rpm. Follow
the “recommended gear” indication that ap-
pears on the instrument panel ››› page 32,
Recommended gear display.
Avoid driving at high speed
We advise you not to drive at the top speed
permitted by the vehicle. Fuel consumption,
exhaust emissions and noise levels all in-
crease very rapidly at higher speeds. Driving
at moderate speeds will help to save fuel.
Avoid idling
It is worthwhile switching off the engine
when waiting in a traffic jam, at level cross-
ings or at traffic lights with a long red phase.
The fuel saved after only 30 - 40 seconds is
greater than the amount of fuel needed to re-
start the engine.
The engine takes a long time to warm up
when it is idling. Mechanical wear and pollu-
tant emissions are also especially high dur-
ing this initial warm-up phase. It is therefore
best to drive off immediately after starting
the engine. Avoid running the engine at high
speed. Periodic maintenance
Periodic maintenance work guarantees that,
before beginning a journey, you will not con-
sume more than the required amount of fuel.
A well-serviced engine gives you the benefit
of
improved fuel efficiency as well as maxi-
mum reliability and an enhanced resale val-
ue.
A badly serviced engine can consume up to
10% more fuel than necessary.
Avoid short journeys
To reduce the consumption and emission of
polluting exhaust gases, the engine and the
exhaust gas filtration systems should reach
the optimum operating temperature.
With the en
gine cold, fuel consumption is
proportionally higher. The engine does not
warm up and fuel consumption does not nor-
malise until having driven approximately four
kilometres (2.5 miles). This is why we recom-
mend avoiding short trips whenever possi-
ble.
Maintain the correct tyre pressures
Bear in mind that keeping the tyres at an ad-
equate pressure saves fuel. If the tyre pres-
sure is just one bar (14.5 psi/100 kPa) too
low, fuel consumption can increase by as
much as 5%. Due to the greater rolling resist-
ance, under-inflation also increases tyre wear
wear and impairs handling.
106
Wheels and tyres
indicators is given on the tyre sidewalls by
the letters “TWI”, triangular symbols or other
symbols.
The useful life of the tyres depends primarily
on the following factors:
Tyre pressure values
Under-inflation or over-inflation will consider-
ably reduce the useful life of the tyres and
impair the vehicle's handling. Therefore,
check the tyre pressure, including the spare
wheel, at least once a month and before any
long journey.
Inflation pressures for summer tyres are lis-
ted on a sticker inside the fuel tank flap. The
pressures for winter tyres are 0.2 bar (2.9
psi/20 kPa) above the summer values.
Always check the pressure when the tyre is
cold. Do not reduce over-pressure in warm
tyres. The tyre pressures must be altered to
suit notable changes in the load being car-
ried.
Driving style
Fast cornering, heavy acceleration and hard
braking all increase tyre wear.
Wheel balancing
The wheels on new vehicles are balanced.
Various factors encountered when driving
can cause them to become unbalanced, which results in vibration of the steering
wheel.
The wheel must be rebalanced if a new tyre is
fitted or if a tyre is repaired.
Incorrect wheel alignment
Incorrect front or rear wheel alignment cau-
ses excessive tyre wear, frequently on one
side, and also impairs vehicle safety. If tyre
wear is very irregular, contact an Official
Service.
Tyre damage
To avoid damage to tyres and wheels, only
drive over kerbs or similar obstacles slowly
and at a right angle if possible.
Check tyres and wheels regularly for damage
(punctures, cracks, blisters, deformities,
etc.). Remove any foreign objects embedded
in outside of the treads.
Unusual vibration or the car pulling to one
side may indicate that one of the tyres is
damaged.
Reduce speed immediately and
s t
op if you suspect that damage may have
occurred! Check the tyres for damage (blis-
ter
s, cracks, etc.). If no external damage is
visible, drive slowly and carefully to the near-
est Official Service and have the vehicle in-
spected. Interchanging tyres
Fig. 118
Interchanging tyres. Changing wheels around
If the wear is visibly greater on the front tyres,
they should be exchanged for the rear tyres
as shown in the diagram
››› Fig. 118 . All the
ty r
es will then last for about the same time.
To ensure that the wear is equal on all tyres
and maintain their optimum useful life, they
should be changed around every 10 000 km.
Storing tyres
When you remove the tyres, mark them in or-
der to maintain the same direction of rotation
when they are installed again.
When removed, the wheels and/or tyres
should be stored in a cool, dry and preferably
dark location. Store tyres in a vertical posi-
tion, if they are not fitted on wheel rims.
145
Technical specifications
Advice
Operation
Safety
Advice
– Fix the sticker 2
››› Fig. 128
›
›› page 155
onto the dash panel where the driver will
see it.
– Do not remove the foreign body, e.g. bolts
or nails, from the tyre.
– Unscrew the tyre valve cap.
– Using the valve extractor 1 , unscrew the
valve insert and place it on a clean surface
(cloth, paper, etc.)
Filling and inflating the tyre Filling the tyre
– Shake the tyre sealant can 10
››› Fig. 128
››› page 155 thoroughly several times.
– Att ac
h the flexible filling hose 3 onto the
can 10 . The foil sealing the can will be au-
tomatically pierced.
– Remove the cap from the flexible filling
hose 3 and insert the open end as far as it
will go into the tyre valve.
– Hold the can 10 upside down and fill the
complete contents of the can into the tyre.
– Remove the empty can from the tyre.
– Screw the valve insert back into the tyre
valve using the valve extractor 1 .Inflating the tyre
–
Screw the tyre filling hose 5
››› Fig. 128
››› page 155 firmly onto the tyre valve.
– Make sure that the bleed screw 7 is
closed.
– Start the vehicle engine and leave it run-
ning.
– Plug connector 9 into the 12-volt power
socket.
– Turn on the air compressor with switch 8 .
– Leave the air compressor running until the
tyre pressure has reached 2.0 -2.5 bar
(29-36 psi/200-250 kPa). The max. operat-
ing time for the compressor is 8 minutes
››› !
– Switch the compressor off.
– When an air pressure of 2.0-2.5 bar
(29-36 psi/200-250 kPa) cannot be
reached, unscrew the flexible tube 5 from
the tyre valve.
– Drive the vehicle approx. 10 metres for-
wards or backwards, so that the sealant
can “spread evenly” in the tyre.
– Screw the flexible hose from the air com-
pressor 5 back onto the tyre valve and re-
peat the inflation process.
– If the pressure is still lower than specified,
the tyre is too badly damaged. The tyre can- not be repaired using the tyre sealant kit
››› .
– Switch the compressor off.
– Unscrew the flexible hose 5 from the tyre
valve.
When a tyre pressure of 2.0-2.5 bar
(29-36 psi/200-250 kPa) is reached, you can
continue driving at a max. speed of 80 km/h
(50 mph).
Check the tyre pressure after 10 minutes of
driving ››› page 157 . WARNING
● The flexible tyre filling hose and the air
compressor may heat up during the filling
process. Risk of injury!
● Do not place the hot flexible tyre filling
hose or hot air compressor on top of flamma-
ble materials. Risk of fire!
● If the tyre cannot be inflated to a minimum
pressure of 2.0 bar (29 psi/200 kPa), then
the tyre is too badly damaged. The sealing
product is unable to seal the tyre . Do not
continue driving and obtain professional as-
sistance. CAUTION
Do not use the air compressor for longer than
8 minutes at a time. Risk of overheating! Be-
fore using the air compressor again, leave it
to cool down for several minutes. 156