165 Intelligent technology
Safety FirstControls and equipment Tips and Maintenance Technical Data
– To go up slopes where each traction wheel is on a surface with a
very different grip (I.e. ice on the left, dry asphalt on the right). The
EDS continues to function under these conditions.
Afterwards you should always reconnect this device.
N No
ot
te
e
For the TCS to work properly all four wheels should be the same. Otherwise
engine performance may be reduced.
⇒“Changing wheels”. K
E El
le
ec
ct
tr
ro
on
ni
ic
c SSt
ta
ab
bi
il
li
it
ty
y PPr
ro
og
gr
ra
am
m ((E
ES
SP
P)
)*
*
The ESP increases the control over the vehicle in situations such as
accelerating or in turns.
The ESP expands the functions of the ABS/TCS and decreases
under any circumstance the risk of skidding. This contributes to an
improved stability of the vehicle.The system works in the realm of speed in relation to the ABS. In
case of a failure of the ABS, the ESP will also fail.
The ESP connects automatically when the engine is switched on
and checks itself.
If needed, the system can be switched on or off by pressing the
button.
When the system is off, the ESP warning light will light up
⇒
"Warning lights" chapter.
The ESP should always be connected. Only in exceptional cases,
when the skidding effect is desired under extremely sporty
conditions, the system can be disconnected.
Afterwards the system should be reconnected.
The ABS and EDS
⇒"Switches" chapter remain connected even
when the ESP is off.
F Fu
un
nc
ct
ti
io
on
ni
in
ng
g
The electronic stability program encompasses the ABS, EDS and
TCS. In addition to all available data for these functions, the ESP
control unit needs additional measurements supplied by high
precision sensors. The measuring data consists of the speed at
which the vehicle turns around its vertical axis, acceleration,
pressure on brakes and the turn of the steering wheel.
With the help of the steering wheel sensor and the vehicle’s
speed, the desired direction is determined and constantly
compared to the vehicle’s real behavior. When differences occur,
such as incipient skidding, the ESP automatically brakes the
adequate wheel.
D Dr
ri
iv
vi
in
ng
g sst
ty
yl
le
e ssh
ho
ou
ul
ld
d aal
lw
wa
ay
ys
s bbe
e mmo
od
di
if
fi
ie
ed
d tto
o ssu
ui
it
t tth
he
e ttr
ra
af
ff
fi
ic
c aan
nd
d rro
oa
ad
d
c co
on
nd
di
it
ti
io
on
ns
s.
. TTh
he
e ggr
re
ea
at
te
er
r ssa
af
fe
et
ty
y ppr
ro
ov
vi
id
de
ed
d bby
y tth
he
e TTC
CS
S ssh
ho
ou
ul
ld
d nno
ot
t lle
ea
ad
d yyo
ou
u tto
o
t ta
ak
ke
e ggr
re
ea
at
te
er
r rri
is
sk
ks
s.
.
W
WA
AR
RN
NI
IN
NG
G
170Your vehicle and the environment
Suggestion 3. Avoid driving at maximum speed
Try not to drive at maximum speed. The increase of fuel
consumption, exhaust pollution and noise is disproportionate at
high speeds.
The illustration shows the relation between consumption
(l/100 km) and speed (km/h)
⇒fig. 152.
If only about 3 quarters of top speed is utilized, the fuel
consumption will be reduced by about half.
Suggestion 4. Decrease idling
It is worth switching off1)the engine in traffic jams, at railroad
crossings and at traffic lights with a long red light. The savings in
fuel after 30-40 seconds with the engine switched off is higher
than the fuel used to switch the engine on again.
K
Suggestion 5. Periodic revisions
Your fuel savings are guaranteed even before going on a trip with
periodic revisions by your Technical Service Centre. Proper engine
maintenance is not only a safety and maintenance issue but also a
fuel consumption issue.
Poor fine tuning of the engine may increase fuel consumption by
up to 10%.
Check the oil level every time you fill up. The oil consumption
depends largely on the engine load. Depending on the driving
style, the oil consumption can be up to 1.0 l/1000 km.
Another suggestion: You can also lower oil consumption by using
synthetic oils.
K
km/h
max
l/100km
B45-355PFig. 152
1)Statutory regulations must be respected.
D Dr
ri
iv
vi
in
ng
g aat
t hhi
ig
gh
h ssp
pe
ee
ed
ds
s dde
ec
cr
re
ea
as
se
es
s rro
oa
ad
d ssa
af
fe
et
ty
y.
.
K
W WA
AR
RN
NI
IN
NG
G
172Your vehicle and the environment
Suggestion 9. Save electricity
The alternator generates electricity while driving. The more
electricity is used, the higher the fuel consumption.
The heated rear window, extra lights, the heater fan and air
conditioning* use a large amount of energy. The heated rear
window creates a consumption of approx. one liter for every 10
hours.
For this reason, disconnect electrical consumers as soon as they
are no longer needed. The alternator generates electricity when the
engine is running.
K
Suggestion 10. Written check-up
If you wish to reduce fuel consumption keep a trip book. It is not
much work and is worth while since it allows you to detect possible
consumption variations (positive or negative) on time and
intervene, if necessary. If you detect an increase in consumption
you should examine the driving conditions since the last filling.
K
174Your vehicle and the environment
A6 mounting points
Bat least 65 mm
All dimensions in mm.
• Technical Service Centres are fully equipped with the necessary
information and expertise for the retrofitting of towing devicesand
the concurrent requirements for reinforcing the cooling system. For
these reasons, it is best to have the fitting done by a Technical
Service Centre.
K
Driving tips
• • TTh
he
e tto
ow
wi
in
ng
g dde
ev
vi
ic
ce
e iis
s aa ssa
af
fe
et
ty
y eel
le
em
me
en
nt
t aan
nd
d yyo
ou
u ssh
ho
ou
ul
ld
d tth
he
er
re
ef
fo
or
re
e
o on
nl
ly
y uus
se
e aa dde
ev
vi
ic
ce
e ssp
pe
ec
ci
if
fi
ic
ca
al
ll
ly
y dde
es
si
ig
gn
ne
ed
d ffo
or
r yyo
ou
ur
r vve
eh
hi
ic
cl
le
e aan
nd
d wwh
hi
ic
ch
h
i is
s ddu
ul
ly
y aap
pp
pr
ro
ov
ve
ed
d.
.
O Op
pe
er
ra
at
ti
io
on
ns
s iin
ns
st
tr
ru
uc
ct
ti
io
on
ns
s
• The removable ball coupling of the towing bracket* may be
stored in the right-hand rear of the boot.
•Additional mirrors are required if the traffic behind the trailer is
not visible with the exterior mirrors fitted as standard. Both exterior
mirrors must be attached to brackets in such a way that a sufficient
field of vision to the rear is guaranteed at all times.
•The permitted trailer weight must not be exceeded under any
circumstances
⇒chapter “Technical Data”.
•When using a trailer on mountain routes you must bear in mind
that the tow loads given in the “Technical data” chapter are onlyapplicable for slopes of 10% to 12%. If you do not use the full tow
load you may drive up steeper slopes.
•The given trailer weights are only applicable for altitudes up
to 1000 m above sea level. As the engine output drops due to
the decreasing air density, the climbing ability must also be
reduced by 10% for each further 1000 m.
•Where possible make full use of the maximum permissible
drawbar weight on the ball of the towing bracket but do not exceed
it
⇒chapter “Technical Data”.
•While observing the permissible trailer and drawbar weight,
distribute the load in the trailer so that heavyobjects are as near
as possible to the axle. The objects must also be secured so that
they cannot slip about.
•The tyre pressures on the towing vehicle must be adjusted for full
load conditions, and also check the pressures on the trailer.
•Headlight settings should be checked, with the trailer attached,
before beginning the journey and adjusted as necessary.
On vehicles with headlight beam control it is only necessary to turn
the knurled disc on the dash board in the appropriate direction.
D Dr
ri
iv
vi
in
ng
g iin
ns
st
tr
ru
uc
ct
ti
io
on
ns
s
To obtain the best possible handling of vehicle and trailer, the
following should be noted:
• Try to avoid driving with an unladen vehicle and a loaded trailer.
If this cannot be avoided, only drive slowly to allow for the
unfavourable weight distribution.
190Checking and refilling
C
Ca
au
ut
ti
io
on
n
• Only our G12+ (purple colour) should be used as an antifreeze additive.
Observe the notice on the container. The cooling liquid may be purchased in
Technical Services.
• The antifreeze additive G12+ can be mixed with other additives (G11 and
G12).
• The additive G12 (red colour) should never be mixed with G11.
K
Checking coolant level
The level can only be checked properly when the engine is not
running.
The coolant level must be between the
m ma
ax
xand m
mi
in
nmarks on the
expansion tank when engine is cold and can be slightly above the
m ma
ax
xmark when it is warm.K
Coolant losses
Coolant loss normally indicates leaks in the system. In this case
the cooling system should be checked by a Technical Service
Center without delay. It is not sufficient merely to add coolant.
In a sealed system losses can only occur if the boiling point of the
coolant is exceeded as a result of overheating, and coolant is
forced out of the system.
K
Topping up coolant
Switch engine off and let it cool down. Then cover expansion tank
cap with a cloth and turn cap carefully anti-clockwise and remove.
No other coolant may be used if
G G1
12
2+
+is not available. In this
case only water can be used and the correct mixture concentration
must be restored with the specified coolant additive (see previous
page) as soon as possible.
Fig. 160
N Ne
ev
ve
er
r oop
pe
en
n tth
he
e bbo
on
nn
ne
et
t iif
f yyo
ou
u cca
an
n sse
ee
e sst
te
ea
am
m oor
r cco
oo
ol
la
an
nt
t lle
ea
av
vi
in
ng
g tth
he
e een
ng
gi
in
ne
e
c co
om
mp
pa
ar
rt
tm
me
en
nt
t –– RRi
is
sk
k oof
f ssc
ca
al
ld
di
in
ng
g!
! WWa
ai
it
t uun
nt
ti
il
l nno
o mmo
or
re
e sst
te
ea
am
m oor
r cco
oo
ol
la
an
nt
t cca
an
n
b be
e sse
ee
en
n.
.
W
WA
AR
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IN
NG
G
D Do
o nno
ot
t rre
em
mo
ov
ve
e eex
xp
pa
an
ns
si
io
on
n tta
an
nk
k cca
ap
p wwh
he
en
n een
ng
gi
in
ne
e iis
s hho
ot
t –– dda
an
ng
ge
er
r oof
f
s sc
ca
al
ld
di
in
ng
g:
:
S Sy
ys
st
te
em
m iis
s uun
nd
de
er
r ppr
re
es
ss
su
ur
re
e.
.
W
WA
AR
RN
NI
IN
NG
G
AL0-046
194Checking and refilling
C
Ca
au
ut
ti
io
on
n
Do not disconnect the vehicle battery when the ignition is on or when the
engine is running, as the electrical system (electronic components) could
otherwise be damaged.
In order to protect the casing from UV radiation, do not expose vehicle
battery to direct sunlight.
K
Location
The battery is in the engine compartment.
To start with the help of another battery
⇒"Emergency starting"
chapter.
K
Checking acid level
Please refer to the warning notes in the chapter "Engine
compartment" before starting any type of work on the engine or
the engine compartment.
The acid/electrolyte level should be checked regularly in the
following cases:
– high mileage
– in countries with a warm climate
– old battery
The battery is otherwise service-free.
The acid level should always be around the
m ma
ax
x.
.mark on the
longside of the battery. It should never be filled above the
m ma
ax
x.
.
mark nor be allowed to drop below the m
mi
in
n.
.mark.
We recommend that the electrolyte level be checked and corrected
by a Technical Service Centre.
B Ba
at
tt
te
er
ry
y wwi
it
th
h aa mma
ag
gi
ic
c eey
ye
e*
*
A round viewing window is located on the upper side of the battery
⇒arrow, fig. 162. This magic eye will change its color according to
the charge condition or the acid level of the battery.
Air bubbles can distort the true color. You should, therefore, tap
carefully on the magic eye.
If the display in the viewing window hasn no
o cco
ol
lo
or
r oor
r iis
s lli
ig
gh
ht
t yye
el
ll
lo
ow
w
,
the acid level in the battery is too low. Distilled water must be
added. We recommend that the battery be replaced if it is older
than 5 years.
We recommend that the electrolyte level be checked and corrected
by a Technical Service Centre.
KFig. 162AL0-048
197 Checking and refilling
Safety FirstControls and equipment Tips and Maintenance Technical Data
W
Wi
in
nd
ds
sc
cr
re
ee
en
n wwa
as
sh
he
er
r
Location
The fluid container is on the left in the engine compartment. It
holds about 3.5 liters; in vehicles with a headlight washer system*
it holds about 6 liters.
The rear windshield* has its own container located in the engine
compartment.
K
Filling the container
You need to add a window cleaning solution with a wax remover to
the water. There are severala ap
pp
pr
ro
op
pr
ri
ia
at
te
e ppr
ro
od
du
uc
ct
ts
s,
, cco
on
nt
ta
ai
in
ni
in
ng
g
i is
so
op
pr
ro
op
pi
il
li
ic
c aal
lc
co
oh
ho
ol
l oor
r mme
et
th
hy
yl
la
at
te
ed
d ssp
pi
ir
ri
it
ts
s
with wax dissolving
properties (with anti-freeze additive in winter) on the market,
because plain water is not usually sufficient to clean the glass and
headlight lenses quickly and thoroughly. The mixing ratios on the
window cleaner packaging must be adhered to.
Even when h he
ea
at
te
ed
d wwi
in
nd
ds
sc
cr
re
ee
en
n wwa
as
sh
he
er
r jje
et
ts
s
* are fitted, a window
cleaning solution containing anti-freeze should be added to the
water in the winter.
C Ca
au
ut
ti
io
on
n
To avoid a possible error by the fluid level sensor, the proportion of alcohol
and water should be 35% alcohol and 65% water approximately.
We recommend you contact a Technical Service Centre for further advice.
Under no circumstances should you add coolant anti-freeze or other
additives.
K
Fig. 163AL0-051
216If and when
Changing a fuse
Please note the warnings from the "Engine compartment" chapter
and following ones, before undergoing any work on the engine or
engine compartment.
The fuses are located behind a cover in the instrument panel
⇒
fig. 45 andfig. 181.
In some models, there are additional fuses in the engine
compartment, for example on top of the battery.
• Switch off ignition and the component concerned.
• Take cover off
⇒fig. 181
• In the cover or in the fuse box you will find plastic pliers* to
remove the fuses.
• You will find the fuse layout on a label in the fuse box cover.• Remove the appropriate fuse.
• Replace blown fuse – can be recognised by the burnt metal strip
– with a fuse of same amperage.
• Replace the cover.
• If the newly inserted fuse blows again after a short time, the
electrical system must be checked by a Technical Service Centre as
soon as possible.
K
Fuse layout
You will find the fuse layout on a label in the fuse box cover.
The meaning of the symbols on the label are explained as follows:
AL0-139Fig. 181S Sy
ym
mb
bo
ol
lM
Me
ea
an
ni
in
ng
g
Dipped beam
Main beam
Adjustment of headlight range
Parking light
Foglight
Rear foglight
Reverse light
Indicators
Hazard warning lights
Instrument panel lighting