Operation
●
Addition a
l lights and other accessories in
front of the air inlet reduce the cooling effect
of the coolant. At high outside temperatures
and high engine loads, there is a risk of the
engine overheating.
● The front spoiler also ensures proper distri-
bution of the c
ooling air when the vehicle is
moving. If the spoiler is damaged this can re-
duce the cooling effect, which could cause
the engine to overheat. Seek specialist assis-
tance. Fuel level
Fig. 123
Fuel gauge. The display
6
› ›
› Fig. 121
only works when
the ignition is switched on. When the display
reaches the reserve mark, the lower diode
lights up in red and the control lamp ap-
pears ››› page 96. When the fuel level is very
low, the lower diode flashes in red. The distance to empty fuel level is displayed
on the instrument
panel 3
› ››
Fig. 121
.
Y
ou can consult the tank capacity of your ve-
hicle in the ›››
page 40 section. CAUTION
Never run the fuel tank completely dry. An ir-
re gu
lar fuel supply could cause misfiring. In
this way the unburned fuel can reach the ex-
haust system, which could cause the catalytic
converter to overheat resulting in damage. Warning and indication lamps
W arnin
g symbo
ls Read the additional information carefully
› ›
›
page 35
There are red warning symbols (priority 1)
and yellow warning symbols (priority 2).
Warning messages, Priority 1 (red)
If one of these faults occurs, the warning
lamp will light up or flash and will be accom-
panied by three audible warnings. This is a
danger warning. Stop the vehicle and switch
off the engine. Check the fault and correct it.
Obtain professional assistance if necessary.
If several priority 1 faults are detected at the
same time, the symbols will be displayed one after the other for about 2 seconds at a time
and wil
l continue until the fault is corrected.
No menus will be shown in the display for the
duration of a priority 1 warning message.
Examples of priority 1 warning messages
(red)
● Brake system symbol with the warnin
g
message STOP BRAKE FLUID INSTRUC-
TION MANUAL or STOP BRAKE FAULT IN-
STRUCTION MANUAL .
● Coolant symbol with the warnin
g mes-
sage STOP SEE COOLANT INSTRUCTION
MANUAL .
● Engine oil pressure symbol with the
warnin
g message STOP ENGINE OIL
PRESSURE LOW! INSTRUCTION MANUAL .
Warning messages, Priority 2 (yellow)
If one of these faults occurs, the correspond-
ing warning lamp lights up and is accompa-
nied by an audible warning. Check the corre-
sponding function as soon as possible al-
though the vehicle may be used without risk.
If several priority 2 warning messages are de-
tected at the same time, the symbols are dis-
played one after the other for about 2 sec-
onds at a time. After a set time, the informa-
tion text will disappear and the symbol will
be shown as a reminder at the side of the
display.
100
Operation
●
Never ignor e the w
arning lamps or messag-
es.
● Stop the vehicle at the next opportunity
and in a safe p
lace. Note
Failure to heed the control lamps and corre-
s pondin g t
ext messages when they light up
may result in damage to the vehicle. Emission control system*
Control lamp
fla
she
s:
When there is misfiring that can damage the
catalytic converter. Reduce speed and drive
carefully to the nearest specialised workshop
to have the engine checked.
The control lamp lights up:
If a fault has developed during driving which
has reduced the quality of the exhaust gas
(e.g. lambda probe fault). Reduce speed and
drive carefully to the nearest specialised
workshop to have the engine checked.
Coolant Level*/Temperature There is a fault if:
● The warning symbol does not go out again
af t
er a f
ew seconds. ●
The contro
l lamp lights up or flashes while
the vehicle is moving, and three acoustic
warning signals ››› are emitted.
Thi s
me
ans that either the coolant level is too
low or the coolant temperature is too high.
Coolant temperature too high
If the control lamp comes on, stop the vehi-
cle, turn off the engine and wait for it to cool
down. Check the coolant level.
If the coolant level is correct, the overheating
may be caused by a malfunction of the radia-
tor fan. Check the radiator fan fuse and have
it replaced if necessary ››› page 81.
If the control lamp lights up again after driv-
ing on for a short distance, stop the vehicle
and switch the engine off. Contact a Techni-
cal Service or a specialised workshop.
Coolant level too low
If the control lamp comes on , stop the vehi-
cle, turn off the engine and wait for it to cool
down. First check the coolant level. If the lev-
el of the coolant is below the “MIN” mark,
top up with coolant liquid ››› .
WARNING
● If y
our vehicle is immobilised for technical
reasons, move it to a safe distance from traf-
fic. Turn the engine off, turn the hazard lights
on and place the warning triangle. ●
Never open the bonnet if
you can see or
hear steam or coolant escaping from the en-
gine compartment. Risk of scalding. Wait un-
til you can no longer see or hear escaping
steam or coolant.
● The engine compartment is a dangerous
area. B
efore carrying out any work in the en-
gine compartment, switch off the engine and
allow it to cool down. Always note the corre-
sponding warnings ››› page 201. Alternator
This control lamp signals a fault in the alter-
n
at
or
.
The control lamp lights up when the igni-
tion is switched on. It should go out when the
engine has started running.
If the control lamp lights up while driving,
the alternator is no longer charging the bat-
tery. You should immediately drive to the
nearest specialised workshop.
You should avoid using electrical equipment
that is not absolutely necessary because this
will drain the battery.
Turn signals Depending on which turn signal is operating,
either the l
ef
t
or right turn signal lamp
flashes. Both control lamps will flash at the
106
Operation
● Use of
so
lvent-free adhesives.
● Use of CFC-free coolants in cooling sys-
tems.
● Recy
cling and energy recovery from resi-
dues (RDF).
● Impr
ovement in the quality of waste water.
● Use of systems for the recovery of residual
heat (therm
al recovery, enthalpy wheels,
etc.).
● The use of water-soluble paints.
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 muc
h engine oil ›››
page 206, Top-
ping up engine oil.
– Never tow the vehicle to start it, use jump
lea
ds 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 oc
cur ››› page 100. If this hap-
pens, unburnt fuel can enter the exhaust sys-
tem and escape into the environment. The
catalytic converter can also be damaged by
overheating. WARNING
The catalytic converter reaches very high
temper at
ures! Risk of fire!
● Never park where the catalytic converter
coul
d come into contact with dry grass or
flammable materials under the vehicle.
● Do not apply additional underseal or anti-
corro
sion coatings to the exhaust pipes, cata-
lytic converter or the heat shields on the ex-
haust system. These materials could catch
fire when the vehicle is being driven. CAUTION
Never run the fuel tank completely dry be-
cau se 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
work in
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 f
uel
. Diesel engine particulate filter*
Fig. 173
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. 173.
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
166
Driver assistance systems
It uses the ABS sensors to monitor the speed
of the driv
en wheel
s. In case of an EDL fault,
the warning light for ABS lights up
››› page 102.
At speeds of up to approximately 80 km/h
(50 mph), it is able to balance out differences
in the speed of the driven wheels of approxi-
mately 100 rpm/min caused by a partially
slippery road surface. It does this by braking
the wheel which has lost traction and distrib-
uting more driving force to the other driven
wheel via the differential.
To prevent the disc brake of the braking
wheel from overheating, the EDL cuts out au-
tomatically if subjected to excessive loads.
The vehicle will continue to function normally
without EDL. For this reason, the driver is not
informed that the EDL has been switched off.
The EDL will switch on again automatically
when the brake has cooled down. WARNING
● When acc el
erating on a slippery surface,
for example on ice and snow, press the accel-
erator carefully. Despite EDL, the driven
wheels may start to spin. This could impair
the vehicle's stability.
● Always adapt your driving style to suit road
conditions
and the traffic situation. Do not let
the extra safety afforded by EDL tempt you in-
to taking any risks when driving, this can
cause accidents. CAUTION
Modifications to the vehicle (e.g. to the en-
gine, the brak e sy
stem, running gear or any
components affecting the wheels and tyres)
could affect the efficiency of the EDL
››› page 190. Hydraulic Brake Assist (HBA)*
The function (Hydraulic Brake Assist HBA) is
only
inc
luded in vehicles with ESC.
In an emergency, most drivers brake in time,
but not with maximum force. This results in
unnecessarily long braking distances.
This is when the brake assist system comes
into action. When pressing the brake pedal
rapidly, the assistant interprets it as an emer-
gency. It very quickly builds up the full brake
pressure so that the ABS can be activated
more quickly and efficiently, thus reducing
braking distance.
Do not reduce the pressure on the brake ped-
al, since the brake assist system switches off
automatically as soon as you release the
brake.
Automatic hazard warning lights activation
The brake lights flash automatically to indi-
cate that the vehicle is braking suddenly or in
an emergency situation. If the emergency
braking continues until the vehicle comes to a standstill, the hazard warning lights will
then come on and the br
ak
e lights will re-
main on permanently from that moment. The
warning lights will automatically switch off
when the vehicle begins to move again or
when the "warning" light button is pressed. WARNING
● The risk of
accident is higher if you drive
too fast, if you do not keep your distance from
the vehicle in front, and when the road sur-
face is slippery or wet. The increased acci-
dent risk cannot be reduced by the brake as-
sist system.
● The brake assist system cannot defy the
law
s of physics. Slippery and wet roads are
dangerous even with the brake assist system!
Therefore, it is essential that you adjust your
speed to suit the road and traffic conditions.
Do not let the extra safety features tempt you
into taking any risks when driving. Anti-lock brake system (ABS)
The anti-lock brake (ABS) system prevents
the wheel
s
fr
om locking during braking and
is an important part of the vehicle's active
safety system.
How the ABS works
If one of the wheels turns too slowly in rela-
tion to the vehicle's speed, and is close to
locking, the system will reduce the braking »
171
Technical data
Advice
Operation
Emergencies
Safety
Checking and refilling levels
WARNING
Only change the engine oil yourself if you
hav e the s
pecialist knowledge required!
● Before opening the bonnet, read and ob-
serve the w
arnings ››› page 201, safety notes
for work in the engine compartment .
● Wait for the engine to cool down. Hot oil
may
cause burn injuries.
● Wear eye protection to avoid injuries, such
as ac
id burns, caused by splashes of oil.
● When removing the oil drain plug with your
finger
s, keep your arm horizontal to help pre-
vent oil from running down your arm.
● Wash your skin thoroughly if it comes into
contact
with engine oil.
● Engine oil is poisonous! Used oil must be
stor
ed in a safe place out of the reach of chil-
dren. CAUTION
No additives should be used with engine oil.
This c
ould result in engine damage. Any dam-
age caused by the use of such additives
would not be covered by the factory warranty. For the sake of the environment
● Bec au
se of disposal problems and the spe-
cial tools and specialist knowledge required,
we recommend that you have the engine oil
and filter changed by a Technical Service. ●
Never pour oi l
down drains or into the
ground.
● Use a suitable container when draining the
used oil
. It must be large enough to hold all
the engine oil. Cooling system
Top pin
g up coolant Read the additional information carefully
› ›
›
page 42
Top up coolant when the level is below the
MIN (minimum) mark.
Checking coolant level
– Park the vehicle in a horizontal position.
– Switch the ignition off.
– Read off the coolant level on coolant ex-
pans
ion tank. When the engine is cold, the
coolant level should be between the marks.
When the engine is hot, it may be slightly
above the upper mark.
Topping up coolant
– Wait for the engine to cool down.
– Cover the coolant expansion tank cap with
a cloth and car
efully unscrew it to the left
››› .–
Top up the c
oo
lant only if there is still cool-
ant in the expansion tank, otherwise you could damage the engine. If there is no
coolant in the expansion tank, do not con-
tinue driving. You should obtain professio- nal assistance ››› .
– If there is still some coolant in the expan-
sion t
ank, t
op up to the upper mark.
– Top up with coolant until the level becomes
stab
le.
– Screw the cap back on correctly.
Any lo
ss of coolant fluid normally indicates a
leak in the cooling system. Take the vehicle
straight to a specialised workshop to have
the cooling system examined. If there are no
leaks in the engine cooling system, a loss of
coolant can only occur if the coolant boils
and is forced out of the system as a result of
overheating. WARNING
● The coo lin
g system is under pressure. Do
not unscrew the cap on the coolant expan-
sion tank when the engine is hot: risk of
burns!
● The antifreeze and coolant fluid can be a
health h
azard. Therefore, the antifreeze
should be stored in the original container in a
safe place out of reach of children. Failure to
comply could result in poisoning. » 207
Technical data
Advice
Operation
Emergencies
Safety