Checking and refilling levels299
Safety FirstOperating instructionsPractical tipsTe c h n i c a l D a t a Whenever there is little fuel in the tank (reserve), the auxiliary heater auto-
matically switches off.
WARNING
Never use start boosters. An aerosol start booster could explode or cause
a sudden rise in engine speed leading to engine damage and serious injury.
Caution
xThe vehicle is not prepared for the use of biodiesel. Under no circum-
stances should this fuel be used. It could damage the fuel system and subse-
quently lead to engine faults!
xThe addition of biodiesel to diesel by the diesel producer according to
Standard EN 590 or other equivalent (DIN 51628 in Germany, for example) is
authorised and causes no type of damage to the engine or the fuel system.
xThe diesel engine has been designed for to use diesel fuel exclusively.
Therefore, never use petrol, fuel oil or other unsuitable fuels. The composition
of these fuels may significantly damage the fuel system and the engine.
xThe use of diesel fuels with a high sulphur percentage could considerably
reduce the service life of the diesel particulate filter. Your qualified workshop
will be able to tell you which countries have diesel with a high sulphur
content.
Information on fuel consumption
The consumption and emission values indicated do not refer to one specific
vehicle. They are only to be used to compare the values of the different
vehicle versions. The fuel consumption and CO
2 emissions of a vehicle not
only depend on the effective use of fuel. They also depend on your driving
style and other non-technical factors.Calculating fuel consumption
Fuel consumption and emission values are determined according to the
current version of the 715/2007/EC or 80/1268/EEC regulation and are valid
for the vehicle kerb weight. The specifications do not refer to an individual
vehicle. Two measuring cycles are carried out on a rolling road test bed. The
test criteria are as follows:
Note
The kerb weight may vary according to the vehicle equipment. This could
raise consumption and the CO
2 emissions slightly.
Note
In practice, consumption values could be different to the values calculated
based on the 715/2007/EC or 80/1268/EEC regulations.
Urban cycleMeasurement of the urban cycle starts with an engine cold
start. City driving is then simulated at between 0 and 50
km/h.
Road cycleIn the road cycle simulation, the car undergoes frequent
acceleration and braking in all gears, as in normal everyday
driving. The road speed ranges from 0 to 120 km/h.
CombinedThe average combined consumption is calculated with a
weighting of around 37 % for the urban cycle and 63 % for
the road cycle.
CO2 emis-
sions of the
combination The exhaust gases are collected during both driving cycles to
calculate carbon dioxide emissions (urban and road). The
gas composition is then analysed to evaluate the CO
2 con-
tent and other emissions.
Checking and refilling levels 304
Working in the engine compartment
Introduction
Before working in the engine compartment, make sure that the vehicle is
parked on horizontal and firm ground.
The engine compartment of the vehicle is a hazardous area. Never work on
the engine or in the engine compartment if you are not familiar with the oper-
ations to be carried out, the applicable safety standards and especially if you
do not have the instruments, liquids and tools necessary Ÿ! Have the
work carried out by a qualified workshop if you are uncertain. Negligent work
can cause serious injury.
Additional information and warnings:
xWindscreen wash system Ÿpage 124
xStart and stop the engine Ÿpage 195
xBrake fluid Ÿpage 210
xVehicle battery Ÿpage 318
xChecks when filling up Ÿpage 293
xEngine oil Ÿpage 309
xEngine coolant Ÿpage 313
xAccessories, parts replacement, repairs and modifications Ÿpage 285
WARNING
If the vehicle moves unexpectedly, this could cause serious injury.
xNever work underneath the vehicle if it is not secured against moving.
If you must work underneath the vehicle with the wheels in contact with
the ground then it should be parked on flat ground, the wheels should be
prevented from moving and the key must be removed from the ignition.
xIf you have to work underneath the vehicle, you must use suitable
stands additionally to support the vehicle, there is a risk of accident!. The
jack is not intended for this kind of work and its failure could lead to severe
injuries.
WARNING
The engine compartment is a dangerous area capable of causing serious
injury.
xFor all type of work, always take the utmost precautions, work carefully
and note the general safety standards in force. Never take personal risks.
xNever work on the engine or in the engine compartment if you are not
familiar with the necessary operations. If you are not sure about proce-
dures then visit a qualified workshop to carry out the necessary work.
Incorrect work can cause serious injuries.
xNever open the bonnet if you see steam or coolant escaping from the
engine compartment. Hot vapours and coolant can cause serious burns.
Always wait until you cannot see or hear the sound of steam or coolant
coming from the engine compartment.
xAlways allow the engine to cool down before opening the bonnet.
xContact with hot elements of the engine and the exhaust system can
cause burns.
xOnce the engine has cooled, follow the instructions below before
opening the bonnet:
Turn on the electronic parking brake and place the gear selector lever
in P or the gear stick in neutral.
Remove the key from the ignition.
Keep children away from the engine compartment and never leave
them unsupervised.
WARNING (continued)