130Intelligent technology
I
In
nt
te
el
ll
li
ig
ge
en
nt
t tte
ec
ch
hn
no
ol
lo
og
gy
y
B
Br
ra
ak
ke
es
s
General notes
• Brake lining wear depends to a large extent on the operating
conditions and style of driving. On vehicles which are used mainly
in town traffic and stop/ start conditions or are driven hard it may
be necessary to have the thickness of the brake linings checked by
a Technical Service Centre in between the intervals given in the
Inspection and Service Schedule.
• Change down in good time when driving downhill, in order to
make use of the engine braking effect. This relieves strain on the
brake system. When the brakes are applied do not keep them on
continuously, apply and release alternately.
K
What can have a negative effect on the brakes?
W We
et
t oor
r ggr
ri
it
tt
te
ed
d rro
oa
ad
d ssu
ur
rf
fa
ac
ce
eO Ov
ve
er
rh
he
ea
at
ti
in
ng
g oof
f tth
he
e bbr
ra
ak
ke
es
s
•U
Un
nd
de
er
r cce
er
rt
ta
ai
in
n cco
on
nd
di
it
ti
io
on
ns
s ee.
.g
g.
. aaf
ft
te
er
r ddr
ri
iv
vi
in
ng
g tth
hr
ro
ou
ug
gh
h wwa
at
te
er
r,
, hhe
ea
av
vy
y rra
ai
in
n ffa
al
ll
ls
s
o or
r aaf
ft
te
er
r tth
he
e vve
eh
hi
ic
cl
le
e hha
as
s bbe
ee
en
n wwa
as
sh
he
ed
d,
, tth
he
e bbr
ra
ak
ke
es
s cco
ou
ul
ld
d sse
et
t iin
n lla
at
te
er
r tth
ha
an
n
n no
or
rm
ma
al
l ddu
ue
e tto
o dda
am
mp
p,
, oor
r iin
n wwi
in
nt
te
er
r –– ffr
ro
oz
ze
en
n,
, bbr
ra
ak
ke
e ddi
is
sc
cs
s aan
nd
d lli
in
ni
in
ng
gs
s –– tth
he
e
b br
ra
ak
ke
es
s mmu
us
st
t ffi
ir
rs
st
t bbe
e ddr
ri
ie
ed
d tth
hr
ro
ou
ug
gh
h cca
ar
re
ef
fu
ul
l bbr
ra
ak
ki
in
ng
g.
.
W
WA
AR
RN
NI
IN
NG
G
•F Fu
ul
ll
l bbr
ra
ak
ki
in
ng
g ppo
ow
we
er
r mmi
ig
gh
ht
t aal
ls
so
o sse
et
t iin
n lla
at
te
er
r tth
ha
an
n nno
or
rm
ma
al
l eev
ve
en
n wwh
he
en
n ddr
ri
iv
vi
in
ng
g
o on
n ggr
ri
it
tt
te
ed
d rro
oa
ad
ds
s iif
f yyo
ou
u hha
av
ve
e nno
ot
t bbr
ra
ak
ke
ed
d ffo
or
r sso
om
me
e tti
im
me
e –– tth
he
e lla
ay
ye
er
r oof
f ssa
al
lt
t oon
n
t th
he
e bbr
ra
ak
ke
e ddi
is
sk
ks
s aan
nd
d bbr
ra
ak
ke
e lli
in
ni
in
ng
gs
s mmu
us
st
t ffi
ir
rs
st
t bbe
e wwo
or
rn
n ddo
ow
wn
n wwh
hi
il
ls
st
t bbr
ra
ak
ki
in
ng
g.
.
W
WA
AR
RN
NI
IN
NG
G ((c
co
on
nt
ti
in
nu
ue
ed
d)
)
• • NNe
ev
ve
er
r lle
et
t tth
he
e bbr
ra
ak
ke
es
s ““r
ru
ub
b”
” bby
y ppr
re
es
ss
si
in
ng
g tth
he
e ppe
ed
da
al
l tto
oo
o lli
ig
gh
ht
tl
ly
y wwh
he
en
n yyo
ou
u ddo
o
n no
ot
t rre
ea
al
ll
ly
y nne
ee
ed
d tto
o bbr
ra
ak
ke
e.
. TTh
hi
is
s cca
au
us
se
es
s tth
he
e bbr
ra
ak
ke
es
s tto
o oov
ve
er
rh
he
ea
at
t,
, lle
ea
ad
ds
s tto
o
l lo
on
ng
ge
er
r bbr
ra
ak
ki
in
ng
g ddi
is
st
ta
an
nc
ce
es
s aan
nd
d tto
o aa hhi
ig
gh
he
er
r lle
ev
ve
el
l oof
f wwe
ea
ar
r.
.
• • BBe
ef
fo
or
re
e sst
ta
ar
rt
ti
in
ng
g oon
n aa llo
on
ng
g sst
tr
re
et
tc
ch
h oof
f rro
oa
ad
d iin
n aa vve
er
ry
y hhi
il
ll
ly
y aar
re
ea
a,
, ppl
le
ea
as
se
e rre
ed
du
uc
ce
e
y yo
ou
ur
r ssp
pe
ee
ed
d,
, cch
ha
an
ng
ge
e tto
o aa llo
ow
we
er
r gge
ea
ar
r ((m
ma
an
nu
ua
al
l gge
ea
ar
rb
bo
ox
x)
) oor
r cch
ho
oo
os
se
e aa llo
ow
we
er
r
p po
os
si
it
ti
io
on
n ((a
au
ut
to
om
ma
at
ti
ic
c gge
ea
ar
rb
bo
ox
x)
).
. IIn
n tth
hi
is
s wwa
ay
y yyo
ou
u wwi
il
ll
l uus
se
e tth
he
e bbr
ra
ak
ki
in
ng
g ppo
ow
we
er
r oof
f
t th
he
e een
ng
gi
in
ne
e aan
nd
d rre
el
li
ie
ev
ve
e ppr
re
es
ss
su
ur
re
e oon
n tth
he
e bbr
ra
ak
ke
es
s.
.
• • IIf
f aa ffr
ro
on
nt
t ssp
po
oi
il
le
er
r,
, ffu
ul
ll
l ssi
iz
ze
e wwh
he
ee
el
l ttr
ri
im
ms
s eet
tc
c.
.,
, iis
s rre
et
tr
ro
of
fi
it
tt
te
ed
d,
, iit
t iis
s nne
ec
ce
es
ss
sa
ar
ry
y tto
o
e en
ns
su
ur
re
e tth
ha
at
t tth
he
e ffl
lo
ow
w oof
f aai
ir
r tto
o tth
he
e ffr
ro
on
nt
t bbr
ra
ak
ke
es
s iis
s nno
ot
t rre
es
st
tr
ri
ic
ct
te
ed
d –– oot
th
he
er
rw
wi
is
se
e
t th
he
e bbr
ra
ak
ke
es
s cca
an
n oov
ve
er
rh
he
ea
at
t.
.
K
W WA
AR
RN
NI
IN
NG
G
131 Intelligent technology
Safety FirstControls and equipment Tips and Maintenance Technical Data
Servobrake
A
An
nt
ti
i-
-l
lo
oc
ck
k bbr
ra
ak
ke
e ssy
ys
st
te
em
m aan
nd
d ttr
ra
ac
ct
ti
io
on
n cco
on
nt
tr
ro
ol
l
A AB
BS
S
Anti-lock brake system (ABS)
The anti-lock brake system prevents the wheels locking during
braking.
The anti-lock brake system (ABS) is an important part of the
vehicle’s active safety system.
H Ho
ow
w tth
he
e AAB
BS
S wwo
or
rk
ks
s
If one of the wheels is turning too slowly in relation to the road
speed, and is close to locking, the system will reduce the braking
pressure for this wheel. The driver is made aware of this control
process by a p pu
ul
ls
sa
at
ti
in
ng
g oof
f tth
he
e bbr
ra
ak
ke
e ppe
ed
da
al
l
and audible noise.This is a deliberate warning to the driver that one or more of the
wheels is tending to lock and the ABS control function has
intervened. In this situation it is important to keep the brake pedal
fully depressed so the ABS can regulate the brake application. Do
not pump the brake pedal.
If you brake hard on a slippery road surface, the best possible
control is retained as the wheels do not lock.
However, ABS will not necessarily guarantee shorter braking
distances in all conditions. The braking distance could even be
longer if you brake on gravel or on fresh snow covering a slippery
surface.
The traction control system (TCS)*
This system includesA AB
BS
Sand T
TC
CS
S.
The traction control system prevents the drive wheels from
spinning when the car is accelerating.
T Th
he
e sse
er
rv
vo
o iis
s oop
pe
er
ra
at
te
ed
d bby
y aa vva
ac
cu
uu
um
m wwh
hi
ic
ch
h iis
s oon
nl
ly
y gge
en
ne
er
ra
at
te
ed
d wwh
he
en
n tth
he
e
e en
ng
gi
in
ne
e iis
s rru
un
nn
ni
in
ng
g.
. FFo
or
r tth
hi
is
s rre
ea
as
so
on
n tth
he
e vve
eh
hi
ic
cl
le
e ssh
ho
ou
ul
ld
d nno
ot
t bbe
e aal
ll
lo
ow
we
ed
d tto
o rro
ol
ll
l
w wi
it
th
h tth
he
e een
ng
gi
in
ne
e ssw
wi
it
tc
ch
he
ed
d oof
ff
f.
.
W Wh
he
en
n tth
he
e bbr
ra
ak
ke
e sse
er
rv
vo
o iis
s nno
ot
t wwo
or
rk
ki
in
ng
g bbe
ec
ca
au
us
se
e,
, ffo
or
r eex
xa
am
mp
pl
le
e,
, tth
he
e vve
eh
hi
ic
cl
le
e iis
s
b be
ei
in
ng
g tto
ow
we
ed
d oor
r aa dde
ef
fe
ec
ct
t hha
as
s ooc
cc
cu
ur
rr
re
ed
d oon
n tth
he
e bbr
ra
ak
ke
e sse
er
rv
vo
o iit
ts
se
el
lf
f,
, tth
he
e bbr
ra
ak
ke
e
p pe
ed
da
al
l mmu
us
st
t bbe
e ppr
re
es
ss
se
ed
d cco
on
ns
si
id
de
er
ra
ab
bl
ly
y hha
ar
rd
de
er
r tto
o cco
om
mp
pe
en
ns
sa
at
te
e ffo
or
r tth
he
e aab
bs
se
en
nc
ce
e
o of
f sse
er
rv
vo
o aas
ss
si
is
st
ta
an
nc
ce
e.
.
K
W WA
AR
RN
NI
IN
NG
G
• • TTh
he
e aan
nt
ti
i-
-l
lo
oc
ck
k bbr
ra
ak
ke
e ssy
ys
st
te
em
m cca
an
nn
no
ot
t dde
ef
fy
y tth
he
e lla
aw
ws
s oof
f pph
hy
ys
si
ic
cs
s.
. SSl
li
ip
pp
pe
er
ry
y aan
nd
d
w we
et
t rro
oa
ad
ds
s aar
re
e dda
an
ng
ge
er
ro
ou
us
s eev
ve
en
n wwi
it
th
h AAB
BS
S!
! IIf
f yyo
ou
u nno
ot
ti
ic
ce
e tth
ha
at
t tth
he
e AAB
BS
S iis
s
w wo
or
rk
ki
in
ng
g ((t
to
o cco
ou
un
nt
te
er
ra
ac
ct
t llo
oc
ck
ke
ed
d wwh
he
ee
el
ls
s uun
nd
de
er
r bbr
ra
ak
ki
in
ng
g)
),
, yyo
ou
u ssh
ho
ou
ul
ld
d rre
ed
du
uc
ce
e
s sp
pe
ee
ed
d iim
mm
me
ed
di
ia
at
te
el
ly
y tto
o ssu
ui
it
t tth
he
e rro
oa
ad
d aan
nd
d ttr
ra
af
ff
fi
ic
c cco
on
nd
di
it
ti
io
on
ns
s.
. DDo
o nno
ot
t lle
et
t tth
he
e
e ex
xt
tr
ra
a ssa
af
fe
et
ty
y ffe
ea
at
tu
ur
re
es
s tte
em
mp
pt
t yyo
ou
u iin
nt
to
o tta
ak
ki
in
ng
g aan
ny
y rri
is
sk
ks
s wwh
he
en
n ddr
ri
iv
vi
in
ng
g.
.
• • TTh
he
e eef
ff
fe
ec
ct
ti
iv
ve
en
ne
es
ss
s oof
f AAB
BS
S iis
s aal
ls
so
o dde
et
te
er
rm
mi
in
ne
ed
d bby
y tth
he
e tty
yr
re
es
s ffi
it
tt
te
ed
d.
.
• • IIf
f tth
he
e rru
un
nn
ni
in
ng
g gge
ea
ar
r oor
r bbr
ra
ak
ke
es
s aar
re
e mmo
od
di
if
fi
ie
ed
d,
, tth
he
e eef
ff
fe
ec
ct
ti
iv
ve
en
ne
es
ss
s oof
f tth
he
e AAB
BS
S
c co
ou
ul
ld
d bbe
e sse
ev
ve
er
re
el
ly
y lli
im
mi
it
te
ed
d.
.
K
W WA
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NI
IN
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G
132Intelligent technology
D
De
es
sc
cr
ri
ip
pt
ti
io
on
n aan
nd
d oop
pe
er
ra
at
ti
io
on
n oof
f tth
he
e ttr
ra
ac
ct
ti
io
on
n cco
on
nt
tr
ro
ol
l ssy
ys
st
te
em
m ddu
ur
ri
in
ng
g
a ac
cc
ce
el
le
er
ra
at
ti
io
on
n ((T
TC
CS
S)
)
TCS reduces engine power to help prevent the drive wheels of front-
wheel drive vehicles losing traction during acceleration. The system
works in the entire speed range in conjunction with ABS. If a
malfunction should occur in the ABS, the TCS will also be out of
action.
TCS helps the vehicle to start moving, accelerate and climb a
gradient in slippery conditions where this may otherwise be
difficult or even impossible.
The TCS is switched on automatically when the engine is started. If
necessary, it may be turned on or off by briefly pushing the button
on the centre console.
When the TCS is off, the warning lamp is lit.
The TCS should normally be left switched on at all times. Only in
exceptional circumstances, when slipping of the wheels is
required, should it be disconnected, for example:
– With compact temporary spare wheel.
– When using the snow chains
– When driving in deep snow or on loose surfaces
– When the vehicle is bogged-down, to free it by rocking it.
The TCS should be switched on again afterwards as soon as
possible.N No
ot
te
e• In order to ensure that TCS function correctly, all four wheels must be
fitted with the same tyres. Any differences in the rolling radiusof the tyres
can cause the system to reduce engine power when this is not desired.
• Modifications to the vehicle (e.g. to the engine, the brake system, running
gear or any components affecting the wheels and tyres) could affect the
efficiency of the ABS and TCS.
K
E El
le
ec
ct
tr
ro
on
ni
ic
c sst
ta
ab
bi
il
li
is
sa
at
ti
io
on
n ppr
ro
og
gr
ra
am
mm
me
e ((E
ES
SP
P)
)*
*
General notes
The electronic stabilisation program increases the vehicle’s
stability on the road.
The electronic stabilisation program helps to reduce the danger of
skidding. It includes the A AB
BS
S
, E ED
DL
L
and T TC
CS
S
systems.
H Ho
ow
w EES
SP
P wwo
or
rk
ks
s
ESP reduces the danger of skidding by braking the wheels
individually.
The system uses the steering wheel angle and road speed to
calculate the changes of direction desired by the driver, and
• • IIt
t mmu
us
st
t bbe
e rre
em
me
em
mb
be
er
re
ed
d tth
ha
at
t TTC
CS
S cca
an
nn
no
ot
t dde
ef
fy
y tth
he
e lla
aw
ws
s oof
f pph
hy
ys
si
ic
cs
s.
. TTh
hi
is
s
s sh
ho
ou
ul
ld
d bbe
e kke
ep
pt
t iin
n mmi
in
nd
d,
, ppa
ar
rt
ti
ic
cu
ul
la
ar
rl
ly
y oon
n ssl
li
ip
pp
pe
er
ry
y aan
nd
d wwe
et
t rro
oa
ad
ds
s aan
nd
d wwh
he
en
n
t to
ow
wi
in
ng
g aa ttr
ra
ai
il
le
er
r.
.
W
WA
AR
RN
NI
IN
NG
G
• • AAl
lw
wa
ay
ys
s aad
da
ap
pt
t yyo
ou
ur
r ddr
ri
iv
vi
in
ng
g sst
ty
yl
le
e tto
o ssu
ui
it
t tth
he
e cco
on
nd
di
it
ti
io
on
n oof
f tth
he
e rro
oa
ad
ds
s aan
nd
d tth
he
e
t tr
ra
af
ff
fi
ic
c ssi
it
tu
ua
at
ti
io
on
n.
. DDo
o nno
ot
t lle
et
t tth
he
e eex
xt
tr
ra
a ssa
af
fe
et
ty
y aaf
ff
fo
or
rd
de
ed
d bby
y TTC
CS
S tte
em
mp
pt
t yyo
ou
u iin
nt
to
o
t ta
ak
ki
in
ng
g aan
ny
y rri
is
sk
ks
s wwh
he
en
n ddr
ri
iv
vi
in
ng
g,
, tth
hi
is
s cca
an
n cca
au
us
se
e aac
cc
ci
id
de
en
nt
ts
s.
.
W
WA
AR
RN
NI
IN
NG
G ((c
co
on
nt
ti
in
nu
ue
ed
d)
)
133 Intelligent technology
Safety FirstControls and equipment Tips and Maintenance Technical Data
constantly compares them with the actual behaviour of the vehicle.
If the desired course is not being maintained (for instance, if the
car is starting to skid), then the ESP compensates automatically by
braking the appropriate wheel.
The forces acting on the braked wheel bring the vehicle back to a
stable condition. If the vehicle tends to oversteer, the system will
act on the front wheel on the outside of the turn.
N No
ot
te
e
•In order to ensure that ESP functions correctly, all four wheels must be
fitted with the same tyres. Any differences in the rolling radiusof the tyres
can cause the system to reduce engine power when this is not desired.
•Modifications to the vehicle (e.g. to the engine, the brake system, running
gear or any components affecting the wheels and tyres) could affectthe
efficiency of the ABS, EDL, ESP and TCS.
K
Anti-lock brake system (ABS)
The anti-lock brake system prevents the wheels locking during
braking
⇒chapter “Anti-lock brake system and traction control
ABS”.
K
Electronic differential lock (EDL)
The electronic differential lock helps prevent the loss of traction
caused if one of the driven wheels starts spinning.
EDL helps the vehicle to start moving, accelerate and climb a
gradient in slippery conditions where this may otherwise be
difficult or even impossible.
It uses the ABS sensors to monitor the speed of the driven wheels.
In case of an EDL fault the warning light for ABS lights up
⇒
chapter “Warning lamps”.
At speeds of up to approximately 80 km/h, it is able to balance out
differences in the speed of the driven wheels of approximately 100
rpm caused by a slippery road surface on one side of the vehicle. It
does this by braking the wheel which has lost traction and
distributing more driving force to the other driven wheel via the
differential.
To prevent the disc brake of the braked wheel from overheating,
the EDL cuts out automatically 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.
• • IIt
t mmu
us
st
t bbe
e rre
em
me
em
mb
be
er
re
ed
d tth
ha
at
t TTC
CS
S cca
an
nn
no
ot
t dde
ef
fy
y tth
he
e lla
aw
ws
s oof
f pph
hy
ys
si
ic
cs
s.
. TTh
hi
is
s
s sh
ho
ou
ul
ld
d bbe
e kke
ep
pt
t iin
n mmi
in
nd
d,
, ppa
ar
rt
ti
ic
cu
ul
la
ar
rl
ly
y oon
n ssl
li
ip
pp
pe
er
ry
y aan
nd
d wwe
et
t rro
oa
ad
ds
s aan
nd
d wwh
he
en
n
t to
ow
wi
in
ng
g aa ttr
ra
ai
il
le
er
r.
.
• • AAl
lw
wa
ay
ys
s aad
da
ap
pt
t yyo
ou
ur
r ddr
ri
iv
vi
in
ng
g sst
ty
yl
le
e tto
o ssu
ui
it
t tth
he
e cco
on
nd
di
it
ti
io
on
n oof
f tth
he
e rro
oa
ad
ds
s aan
nd
d tth
he
e
t tr
ra
af
ff
fi
ic
c ssi
it
tu
ua
at
ti
io
on
n.
. DDo
o nno
ot
t lle
et
t tth
he
e eex
xt
tr
ra
a ssa
af
fe
et
ty
y aaf
ff
fo
or
rd
de
ed
d bby
y EES
SP
P tte
em
mp
pt
t yyo
ou
u iin
nt
to
o
t ta
ak
ki
in
ng
g aan
ny
y rri
is
sk
ks
s wwh
he
en
n ddr
ri
iv
vi
in
ng
g,
, tth
hi
is
s cca
an
n cca
au
us
se
e aac
cc
ci
id
de
en
nt
ts
s.
.
W
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134Intelligent technology
N
No
ot
te
e
•Modifications to the vehicle (e.g. to the engine, the brake system, running
gear or any components affecting the wheels and tyres) could affect the
efficiency of the EDL.
K
The traction control system (TCS)
The traction control system prevents the drive wheels from
spinning when the car is accelerating
⇒chapter “Anti-lock brake
system and traction control ABS”.
K
P Po
ow
we
er
r sst
te
ee
er
ri
in
ng
g*
*
Do not keep the steering wheel fully turned more than 15 seconds
when the engine is switched on, as the hydraulic oil will be heated
to a high temperature by the servo pump.
T Th
hi
is
s cco
ou
ul
ld
d dda
am
ma
ag
ge
e tth
he
e ppo
ow
we
er
r sst
te
ee
er
ri
in
ng
g ssy
ys
st
te
em
m.
.
Furthermore, each time you turn the steering wheel as far as it will
go with the engine off, you will hear a series of noises made by the
excessive effort of the servo pump. Another consequence is the
decrease of the idling speed for a short period of time.
N No
ot
te
e
Some functional aspects of the vehicle can be programmed according to
the client’s driving style. For further information, consult the Technical
Service.
K
• • WWh
he
en
n aac
cc
ce
el
le
er
ra
at
ti
in
ng
g oon
n aa ssl
li
ip
pp
pe
er
ry
y ssu
ur
rf
fa
ac
ce
e,
, ffo
or
r eex
xa
am
mp
pl
le
e oon
n iic
ce
e aan
nd
d ssn
no
ow
w,
,
p pr
re
es
ss
s tth
he
e aac
cc
ce
el
le
er
ra
at
to
or
r cca
ar
re
ef
fu
ul
ll
ly
y.
. DDe
es
sp
pi
it
te
e EED
DL
L,
, tth
he
e ddr
ri
iv
ve
en
n wwh
he
ee
el
ls
s mma
ay
y sst
ta
ar
rt
t tto
o
s sp
pi
in
n.
. TTh
hi
is
s cco
ou
ul
ld
d iim
mp
pa
ai
ir
r tth
he
e vve
eh
hi
ic
cl
le
e’
’s
s sst
ta
ab
bi
il
li
it
ty
y.
.
• • AAl
lw
wa
ay
ys
s aad
da
ap
pt
t yyo
ou
ur
r ddr
ri
iv
vi
in
ng
g sst
ty
yl
le
e tto
o ssu
ui
it
t tth
he
e cco
on
nd
di
it
ti
io
on
n oof
f tth
he
e rro
oa
ad
ds
s aan
nd
d tth
he
e
t tr
ra
af
ff
fi
ic
c ssi
it
tu
ua
at
ti
io
on
n.
. DDo
o nno
ot
t lle
et
t tth
he
e eex
xt
tr
ra
a ssa
af
fe
et
ty
y aaf
ff
fo
or
rd
de
ed
d bby
y EED
DL
L tte
em
mp
pt
t yyo
ou
u iin
nt
to
o
t ta
ak
ki
in
ng
g aan
ny
y rri
is
sk
ks
s wwh
he
en
n ddr
ri
iv
vi
in
ng
g,
, tth
hi
is
s cca
an
n cca
au
us
se
e aac
cc
ci
id
de
en
nt
ts
s.
.
W
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137 Your vehicle and the environment
Safety FirstControls and equipment Tips and Maintenance Technical Data
E
En
nv
vi
ir
ro
on
nm
me
en
nt
t-
-f
fr
ri
ie
en
nd
dl
ly
y aan
nd
d eec
co
on
no
om
mi
ic
ca
al
l
d dr
ri
iv
vi
in
ng
g
General notes
Three factors determine the fuel consumption, the burden on the
environment and the wear on the engine, brakes and tyres:
•The personal driving style.
•The individual conditions of the use of the car.
•Technical prerequisites.
The fuel consumption can be reduced by 10 to 15 percent by
adopting a thoughtful and economic driving style. This chapter will
help you lower pollution and save money by following 10
suggestions.
K
Suggestion 1. Thoughtful driving style
The highest fuel consumption takes place during acceleration. If
you drive in a thoughtful manner you will have to brake less and,
therefore, accelerate less. You can also let the vehicle roll, i.e.
when you can foresee that the following traffic light will be red.
K
Suggestion 2. Changing gears saves energy
Another way to save fuel is to change up as quickly as possible. If
you drive with high engine revs the car will use up more energy.
The fig. 100shows the relation between the consumption (l/100
km) and speed (km/h) in first, second, third, fourth and fifth gear.
The following rules may be helpful. Never drive more than a few
meters in first gear. When you reach 2,000 revolutions, you should
change up.
If you drive a vehicle with an automatic gearbox, press the
accelerator pedal gently. Do not press it to the kick-down position.
This way, a consumption oriented program is automatically
selected. It changes up as soon as possible and takes longer to
change down.
K
30 50 70km/h
90
l/100km
1.
2.
3.
4.
5.
B45-354PFig. 100
142Your vehicle and the environment
•In vehicles without air conditioning, the cooling system should
be reinforced if a towing device is fitted at a later stage.
Failure to do so will submit the engine to greater stress (steep
slopes, high temperatures, heavy towing loads, etc.) and result in
overheating of the engine. For more information, contact a
Technical Service Centre.
•When using a trailer on mountain routes you must bear in mind
that the tow loads given in the “Technical data” chapter are only
applicable 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 heavy objects 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.
• As driving stability of vehicle and trailer decreaseswhen the
speed increases do not drive at the maximum permissible top
speed in unfavourable road, weather or wind conditions –
particularly when going downhill.
In any case the speed must be reduced as soon as the trailer
shows the slightest sign of snaking. On no account try to stop the
snaking by accelerating.
• • FFo
or
r ssa
af
fe
et
ty
y rre
ea
as
so
on
ns
s oon
ne
e ssh
ho
ou
ul
ld
d nno
ot
t ddr
ri
iv
ve
e ffa
as
st
te
er
r tth
ha
an
n 880
0 kkm
m/
/h
h
( (5
50
0 mmp
ph
h)
).
. TTh
hi
is
s aal
ls
so
o aap
pp
pl
li
ie
es
s iin
n cco
ou
un
nt
tr
ri
ie
es
s wwh
he
er
re
e hhi
ig
gh
he
er
r ssp
pe
ee
ed
ds
s aar
re
e
p pe
er
rm
mi
it
tt
te
ed
d.
.
• Always brake in good time. If the trailer has an overrun brake,
apply the brakes gently at first then firmly. This will avoid the
jerking caused by the trailer wheels locking.
Change down before going down a steep hill so that the engine
can act as a brake.
• When a long climb in a low gear with extremely high engine revs
must be negotiated at exceptionally high ambient temperatures
the coolant temperature gauge must be observed. When the gauge
needle moves to the right end of the scale, the road speed must be
reduced immediately.
• The cooling effect of the radiator fan cannot be increased by
changing down, because the speed of the fan is not dependent on
153 Care and maintenance
Safety FirstControls and equipment Tips and Maintenance Technical Data
Steel wheels
The wheels and the wheel trims should be cleaned thoroughly at
regular intervals when the vehicle is being washed. This will
prevent brake dust, dirt and road salt from accumulating on the
wheel. Persistent ingrained brake dust can be removed with an
industrial grime remover. Paint damage should be repaired before
rust can form.
K
Alloy wheels*
In order to maintain the smart appearance of alloy wheels for a
long period, regular care is necessary. In particular, salt and brake
pad dust must be washed off thoroughly at least every two weeks
otherwise the surface of the alloy will be damaged. After being
washed, the wheels should be treated with an acid-free cleaner for
alloy wheels. About every three months it is necessary to give
wheels a good rubbing with hard wax. Paint polish or other
abrasive solutions must not be used. If the protective paint coat
has been damaged, e.g. by stone impact, the damaged spots
should be dealt with as soon as possible.
Cleaning and anti-corrosion treatment of engine
compartment
The leaves, blossoms etc. which drop into the water box
(underneath the engine bonnet in front of the windscreen) should
be cleaned out occasionally. This will prevent the water drain holes
from becoming blocked and – on vehicles without a dust and
pollen filter – foreign bodies entering the vehicle interior via the
heating and ventilation system.
The engine compartment and the outside surface of the power unit
are given anti-corrosion treatment at the factory.
In the winter when the vehicle is being driven frequently on salted
roads, good anti-corrosion treatment is very important. For this
reason the entire engine compartment and the plenum chamber
should be thoroughly cleaned before and after the salting period
and then preserved so that the salt cannot have a damaging effect.
T Th
he
e iig
gn
ni
it
ti
io
on
n mmu
us
st
t bbe
e ssw
wi
it
tc
ch
he
ed
d oof
ff
f bbe
ef
fo
or
re
e wwa
as
sh
hi
in
ng
g tth
he
e een
ng
gi
in
ne
e.
.
D Do
o nno
ot
t ppo
oi
in
nt
t tth
he
e wwa
at
te
er
r jje
et
t ddi
ir
re
ec
ct
tl
ly
y aat
t tth
he
e hhe
ea
ad
dl
li
ig
gh
ht
ts
s tto
o aav
vo
oi
id
d
d da
am
ma
ag
ge
e.
.
P
Pl
le
ea
as
se
e nno
ot
te
e wwh
he
en
n ccl
le
ea
an
ni
in
ng
g tth
he
e wwh
he
ee
el
ls
s tth
ha
at
t dda
am
mp
pn
ne
es
ss
s,
, iic
ce
e aan
nd
d ggr
ri
it
t cca
an
n
h ha
av
ve
e aa nne
eg
ga
at
ti
iv
ve
e eef
ff
fe
ec
ct
t oon
n tth
he
e bbr
ra
ak
ki
in
ng
g ppo
ow
we
er
r.
.
K
W WA
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•B Be
ef
fo
or
re
e wwo
or
rk
ki
in
ng
g iin
n tth
he
e een
ng
gi
in
ne
e cco
om
mp
pa
ar
rt
tm
me
en
nt
t,
, rre
ea
ad
d tth
he
e nno
ot
te
es
s iin
n tth
he
e
" "E
En
ng
gi
in
ne
e cco
om
mp
pa
ar
rt
tm
me
en
nt
t"
" cch
ha
ap
pt
te
er
r.
.
•F
Fo
or
r ssa
af
fe
et
ty
y rre
ea
as
so
on
ns
s ppu
ul
ll
l oou
ut
t iig
gn
ni
it
ti
io
on
n kke
ey
y bbe
ef
fo
or
re
e rre
ea
ac
ch
hi
in
ng
g iin
nt
to
o tth
he
e wwa
at
te
er
r
b bo
ox
x.
. OOt
th
he
er
rw
wi
is
se
e iif
f tth
he
e wwi
in
nd
ds
sc
cr
re
ee
en
n wwi
ip
pe
er
rs
s aar
re
e ssw
wi
it
tc
ch
he
ed
d oon
n uun
ni
in
nt
te
en
nt
ti
io
on
na
al
ll
ly
y
t th
he
e mmo
ov
ve
em
me
en
nt
t oof
f tth
he
e wwi
ip
pe
er
r lli
in
nk
k cco
ou
ul
ld
d cca
au
us
se
e iin
nj
ju
ur
ry
y.
.
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