
Driving153
Safety FirstControls and equipment Tips and Maintenance Technical Data
If the engine does not start, switch the glow plugs on again and try
starting it again as described.
S St
ta
ar
rt
ti
in
ng
g aa wwa
ar
rm
m een
ng
gi
in
ne
e
The glow plug lamp does not come on – the engine can be started
straight away.
K
Starting after running out of fuel
If the tank on vehicles with a diesel engine was empty, starting
after filling with diesel fuel can take longer than normal – up to
one minute. This is because the fuel system must first be freed of
air before starting.
K
S St
to
op
pp
pi
in
ng
g tth
he
e een
ng
gi
in
ne
e
Valid for all engines
C
Ca
au
ut
ti
io
on
n
When the engine has been subjected to a heavy engine load for a long
time, the engine must not be switched off abruptly. Let it idle for about 2
minutes to avoid overheating.
Valid for all versions with catalytic converter*
C Ca
au
ut
ti
io
on
n
Do not switch off the ignition while the vehicle is in motion with a gear
engaged; otherwise unburned fuel may go into the converter, where it
would burn and cause overheating, which would damage the converter.
K
A Af
ft
te
er
r tth
he
e een
ng
gi
in
ne
e hha
as
s bbe
ee
en
n sst
to
op
pp
pe
ed
d tth
he
e ffa
an
n cca
an
n cco
on
nt
ti
in
nu
ue
e rru
un
nn
ni
in
ng
g ffo
or
r aa wwh
hi
il
le
e
( (u
up
p tto
o aab
bo
ou
ut
t 110
0 mmi
in
nu
ut
te
es
s)
) wwi
it
th
h tth
he
e iig
gn
ni
it
ti
io
on
n ssw
wi
it
tc
ch
he
ed
d oof
ff
f.
. IIt
t cca
an
n aal
ls
so
o sst
ta
ar
rt
t tto
o
r ru
un
n aag
ga
ai
in
n ssu
ud
dd
de
en
nl
ly
y aaf
ft
te
er
r aa ssh
ho
or
rt
t tti
im
me
e iif
f
– – tth
he
e cco
oo
ol
la
an
nt
t tte
em
mp
pe
er
ra
at
tu
ur
re
e iin
nc
cr
re
ea
as
se
es
s ddu
ue
e tto
o hhe
ea
at
t bbu
ui
il
ld
d-
-u
up
p
– – wwh
he
en
n tth
he
e een
ng
gi
in
ne
e iis
s hho
ot
t aan
nd
d tth
he
e een
ng
gi
in
ne
e cco
om
mp
pa
ar
rt
tm
me
en
nt
t iis
s hhe
ea
at
te
ed
d
a ad
dd
di
it
ti
io
on
na
al
ll
ly
y bby
y sst
tr
ro
on
ng
g ssu
un
nl
li
ig
gh
ht
t.
.
S Sp
pe
ec
ci
ia
al
l cca
ar
re
e mmu
us
st
t tth
he
er
re
ef
fo
or
re
e bbe
e tta
ak
ke
en
n wwh
he
en
n wwo
or
rk
ki
in
ng
g iin
n tth
he
e een
ng
gi
in
ne
e
c co
om
mp
pa
ar
rt
tm
me
en
nt
t.
.
K
W WA
AR
RN
NI
IN
NG
G

157 Refuelling
Safety FirstControls and equipment Tips and Maintenance Technical Data
T
Ti
ip
ps
s aan
nd
d MMa
ai
in
nt
te
en
na
an
nc
ce
e
R
Re
ef
fu
ue
el
ll
li
in
ng
g
F
Fi
il
ll
li
in
ng
g tth
he
e tta
an
nk
k
General notes
The filler neck is on the rear right side panel of the vehicle.
The tank flap is automatically locked and unlocked with the central
locking. If the central locking system is defective the flap can be
opened by hand – see next page.
The tank holds about 70 litres.When tank cap has been taken off it can be placed on the tank flap
⇒ fig. 149.
Filling the tank without problem depends largely on the correct
operation of the petrol pump:
• Do not place the nozzle too deeply into the filler neck and do not
place the nozzle at an angle.
• Do not select a high flow rate – the fuel (particularly Diesel) will
otherwise foam up. This could cause the petrol pump to switch off
prematurely.
F Fo
or
r tth
he
e ssa
ak
ke
e oof
f tth
he
e een
nv
vi
ir
ro
on
nm
me
en
nt
t
As soon as the correctly operated automatic nozzle switches off for the first
time, the tank is full. Do not try then to put more fuel in because the
expansion space in tank will be filled – the fuel can then overflow when it
becomes warm.
After filling tank, screw cap on tightly and lock it.
N No
ot
te
e
Any fuel spillage should be wiped off the paint finish immediately, as the
paint could otherwise be damaged, especially if it is RME (“biodiesel”) fuel.
Fig. 149
AL0-042

158Refuelling
C
Ca
au
ut
ti
io
on
n
On vehicles with a catalytic converter, never drive until the fueltank is
completely empty. The irregular fuel supply can cause misfiring. This allows
unburnt fuel into the exhaust system, which can cause overheating and
damage to the catalyst.
K
Releasing tank flap manually
If the central locking system should fail, the flap can be released
manually:
• Open tailgate and – if fitted – fold back the right luggage
compartment trim from side panel.
• Then push the locking rod in front of the white diaphragm
housing backward slightly in direction of arrow
⇒fig. 150.K
P
Pe
et
tr
ro
ol
l
In the chapter “Technical Data” and on the inside of the tank flap
you will find information on the correct octane rating for your
engine.
K
General notes
•Unleaded petrol must comply with DIN EN1)228 and leaded
petrol with DIN 51 600.
•If, in an emergency, the octane rating of the available petrol is
lower than that required by the engine, only drive with medium
engine speeds and low engine loading. H Hi
ig
gh
h een
ng
gi
in
ne
e llo
oa
ad
di
in
ng
g wwi
it
th
h
f fu
ul
ll
l tth
hr
ro
ot
tt
tl
le
e oor
r hhi
ig
gh
h rre
ev
vs
s cca
an
n cca
au
us
se
e een
ng
gi
in
ne
e dda
am
ma
ag
ge
e.
.
Fill tank with
petrol of the correct octane rating as soon as possible.
•Fuel with a higher octane rating than that required by the engine
can be used without limitation. There are, however, no advantages
regarding output and consumption.
F Fo
or
r tth
he
e ssa
ak
ke
e oof
f tth
he
e een
nv
vi
ir
ro
on
nm
me
en
nt
t
Even one tankful of leaded petrol will detract from the efficiency ofthe
catalytic converter.
N No
ot
te
e
See chapter “Filling the tank”.K
1)European norm
B7M-093CFig. 150

159 Refuelling
Safety FirstControls and equipment Tips and Maintenance Technical Data
Petrol additives
The quality of the fuel has a decisive influence upon the running
behavior, performance and service life of the engine. The additives
which are mixed into the petrol are of particular significance. Itis
therefore advisable only to use good q qu
ua
al
li
it
ty
y ppe
et
tr
ro
ol
l cco
on
nt
ta
ai
in
ni
in
ng
g
a ad
dd
di
it
ti
iv
ve
es
s.
.
K
D
Di
ie
es
se
el
l
Diesel
Diesel fuel must correspond to DIN EN1)590.
C
CZ
Z2
2)
)n
no
o llo
ow
we
er
r tth
ha
an
n 449
9.
.K
RME fuel (“diester”)
According to norm DIN 51 6063).
Vehicles with diesel engines can also run on
R RM
ME
E ffu
ue
el
l (Rapeseed
Methyl Ester).
Ask your Technical Service Centre or automobile club where
biodiesel is available.
See chapter "Filling the tank".
K
Properties of RME
•RME is chemically produced from vegetable oil (predominantly
rapeseed oil) in a process whereby the oil is mixed with methanol
and converted, via a catalyst, into RME.
•RME is almost totally sulfur free. The combustion of RME thus
emits practically no sulfur dioxide (SO
2).
•Exhaust gas contains less
– carbon monoxide
– hydrocarbons
– particles (i.e. soot)
than with conventional diesel fuel.
All emission values are lower than legal requirements.
•RME fuel is biodegradable.
•Performance may be slightly lower.
•Fuel consumption may be slightly higher.
•RME can be used in temperatures down to approximately –10 °C.
•Diesel fuel must be added at ambient temperatures of less than
–10 °C to prevent deterioration to the biodiesel. The mixing ratio
of diesel to biodiesel must be approximately 50:50.
I If
f tth
he
e RRM
ME
E rra
at
ti
io
o eex
xc
ce
ee
ed
ds
s 550
0%
%,
, tto
oo
o mmu
uc
ch
h ssm
mo
ok
ke
e mma
ay
y bbe
e ffo
or
rm
me
ed
d.
.
•During the summer months, RME may be mixed with diesel at
any ratio.
K
1)European norm2)Cetan-Zahl (Cetane Number). Measure of diesel fuel ignitability.3)DIN preliminary Norm

160Refuelling
Driving in winter
When using summer Diesel trouble may be experienced at
temperatures below 0 °C because the fuel thickens due to wax
separation.
For this reason winter Diesel which is more resistant to cold is sold
during the winter in some countries, and this works correctly down
to between –15 °C and –22 °C approximately, depending on the
brand of fuel used.
The biodiesel available in countries with different climactic
conditions usually has different temperature characteristics.
Technical Service Centres or service stations in each country can
inform you of the specific characteristics of the respective diesel.
K
Filter preheating
The vehicle is fitted with a filter preheater. This will ensure that the
fuel system will remain operational down to about –25 °C,
provided that winter Diesel which is cold resistant down to –15 °C
is used.
If, at temperatures below –25 °C the fuel is waxed to such an
extent that the engine will not start it is sufficient to place the
vehicle in a warm enclosure for a while.
Fuela ad
dd
di
it
ti
iv
ve
es
s
(anti-waxing agent), petroland similar fluids must
n no
ot
t
be mixed with Diesel fuel.
K

167 Your vehicle and the environment
Safety FirstControls and equipment Tips and Maintenance Technical Data
Y
Yo
ou
ur
r vve
eh
hi
ic
cl
le
e aan
nd
d tth
he
e een
nv
vi
ir
ro
on
nm
me
en
nt
t
T
Th
he
e ffi
ir
rs
st
t 11,
,5
50
00
0 kkm
m –– aan
nd
d aaf
ft
te
er
rw
wa
ar
rd
ds
s
Running-in
During the first few operating hours the engine internal friction is
higher than later on when all the moving parts have bedded down.
How well this running-in process is done depends to a
considerable extent on the way the vehicle is driven during the first
1,500 km.
K
Up to 1,000 kilometres
the following general rules apply:
•D Do
o nno
ot
t uus
se
e ffu
ul
ll
l tth
hr
ro
ot
tt
tl
le
e
•D Do
o nno
ot
t ddr
ri
iv
ve
e ffa
as
st
te
er
r tth
ha
an
n 33/
/4
4 oof
f tto
op
p ssp
pe
ee
ed
d
•A Av
vo
oi
id
d hhi
ig
gh
h een
ng
gi
in
ne
e ssp
pe
ee
ed
ds
s
•Trailer towing should if possible be avoided.
From 1,000 – 1,500 km
The speed can be gradually increased to the road or engine
maximum.
K
During and after the running-in period the following
applies:
•Do not overrev the engine when cold – either in neutral or in the
gears.
All speeds and revs given are only valid when engine isp pr
ro
op
pe
er
rl
ly
y
w wa
ar
rm
m
.
F Fo
or
r tth
he
e ssa
ak
ke
e oof
f tth
he
e een
nv
vi
ir
ro
on
nm
me
en
nt
t
Do not drive with the engine speed unnecessarily high – changing up
early helps to save fuel, reduces noise and protects the environment⇒"Environment friendly and economical driving" chapter.
•Do not let engine labour – change down when engine no longer
runs smoothly.
K
• • NNe
ew
w tty
yr
re
es
s mmu
us
st
t aal
ls
so
o bbe
e ““r
ru
un
n iin
n”
” bbe
ec
ca
au
us
se
e tth
he
ey
y ddo
o nno
ot
t hha
av
ve
e mma
ax
xi
im
mu
um
m
a ad
dh
he
es
si
io
on
n aat
t tth
he
e sst
ta
ar
rt
t.
. TTh
hi
is
s mmu
us
st
t bbe
e tta
ak
ke
en
n iin
nt
to
o aac
cc
co
ou
un
nt
t bby
y ddr
ri
iv
vi
in
ng
g cca
ar
re
ef
fu
ul
ll
ly
y
d du
ur
ri
in
ng
g tth
he
e ffi
ir
rs
st
t 110
00
0 kkm
m.
.
• • NNe
ew
w bbr
ra
ak
ke
e lli
in
ni
in
ng
gs
s mmu
us
st
t aal
ls
so
o bbe
e rru
un
n iin
n aan
nd
d ddo
o nno
ot
t hha
av
ve
e tth
he
e oop
pt
ti
im
mu
um
m
f fr
ri
ic
ct
ti
io
on
n ppr
ro
op
pe
er
rt
ti
ie
es
s ddu
ur
ri
in
ng
g tth
he
e ffi
ir
rs
st
t 220
00
0 kkm
m.
. TTh
he
e ssl
li
ig
gh
ht
tl
ly
y rre
ed
du
uc
ce
ed
d bbr
ra
ak
ki
in
ng
g
W
WA
AR
RN
NI
IN
NG
G
e ef
ff
fe
ec
ct
t cca
an
n bbe
e cco
om
mp
pe
en
ns
sa
at
te
ed
d ffo
or
r bby
y mmo
or
re
e ppr
re
es
ss
su
ur
re
e oon
n tth
he
e bbr
ra
ak
ke
e ppe
ed
da
al
l.
. TTh
hi
is
s
a al
ls
so
o aap
pp
pl
li
ie
es
s wwh
he
en
n nne
ew
w lli
in
ni
in
ng
gs
s hha
av
ve
e bbe
ee
en
n ffi
it
tt
te
ed
d.
.
K
W WA
AR
RN
NI
IN
NG
G ((c
co
on
nt
ti
in
nu
ue
ed
d)
)

168Your vehicle and the environment
After the running-in period
•On vehicles with a rev counter* the maximum permissible engine
speed is shown by the beginning of the red zone on the rev
counter scale. The needle of the counter must not move into this
zone.
Extremely high engine revs will be automatically governed.
K
C Cl
le
ea
an
ni
in
ng
g tth
he
e eex
xh
ha
au
us
st
t ffu
um
me
es
s
Description
T
Th
he
e ppe
er
rf
fe
ec
ct
t ffu
un
nc
ct
ti
io
on
ni
in
ng
g oof
f tth
he
e ccl
le
ea
an
ni
in
ng
g ssy
ys
st
te
em
m ffo
or
r eex
xh
ha
au
us
st
t ffu
um
me
es
s
is of great importance for the environment-friendly functioning of
your vehicle.
Therefore, keep in mind the following points:
•Versions with a catalytic converter must only use unleaded fuel
⇒"Filling the tank" chapter.
•In vehicles with a catalytic converter never drive until the fuel
tank is completely empty. Irregular fuel supply can cause misfiring,
thus allowing unburned fuel into the exhaust system which can
cause overheating and damage to the catalyst.
•If you experience starting difficulties, loss of power or engine
problems while driving, the cause could be a failure in the ignition.In this case, fuel may be entering the exhaust system without
burning and, in this way being released into the atmosphere.
Furthermore, the catalyst could deteriorate due to overheating.
Reduce speed immediately. Have this problem fixed at the nearest
Technical Service Centre.
•Do not overload the engine with oil
⇒"Engine oil" chapter.
•Do not towstartthe vehicle for more than 50 m
⇒"Tow
start/towing" chapter.
N No
ot
te
e
Even when the cleaning system for exhaust fumes is in perfect working
order, under certain circumstances, the fumes may smell like sulfur.
This depends on the percentage of sulfur in the fuel.
Often it is sufficient to change brands or buy super unleaded.
K
•D Du
ue
e tto
o ppo
os
ss
si
ib
bl
le
e hhi
ig
gh
h tte
em
mp
pe
er
ra
at
tu
ur
re
es
s oof
f tth
he
e cca
at
ta
al
ly
ys
st
t,
, ddo
o nno
ot
t ppa
ar
rk
k iin
n
p pl
la
ac
ce
es
s wwh
he
er
re
e tth
he
e cca
at
ta
al
ly
ys
st
t iis
s eea
as
si
il
ly
y eex
xp
po
os
se
ed
d tto
o iin
nf
fl
la
am
mm
ma
ab
bl
le
e mma
at
te
er
ri
ia
al
l.
.
•D
Do
o nno
ot
t uus
se
e aad
dd
di
it
ti
io
on
na
al
l ppr
ro
ot
te
ec
ct
ti
io
on
n ffo
or
r tth
he
e bbo
od
dy
y oor
r aan
nt
ti
ic
co
or
rr
ro
os
si
iv
ve
e ppr
ro
od
du
uc
ct
ts
s ffo
or
r
s su
um
mp
ps
s aan
nd
d eex
xh
ha
au
us
st
t ppi
ip
pe
es
s,
, c
ca
at
ta
al
ly
yt
ti
ic
c cco
on
nv
ve
er
rt
te
er
rs
s oor
r hhe
ea
at
t ssh
hi
ie
el
ld
ds
s.
.T
Th
he
e
a ab
bo
ov
ve
e mme
en
nt
ti
io
on
ne
ed
d mma
at
te
er
ri
ia
al
l cco
ou
ul
ld
d iig
gn
ni
it
te
e wwh
hi
il
le
e ddr
ri
iv
vi
in
ng
g.
.
W
WA
AR
RN
NI
IN
NG
G

169 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. 151shows 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. 151