Page 65 of 308

The essentials
Wheel bolts Fig. 80
Changing a wheel: loosen the wheel
bo lts. Fig. 81
Changing a wheel: tyre valve 1 and
the c orrect
position for the anti-theft wheel
locking bolt 2 or
3 .
Use only the wheel wrench belonging to the
c
ar t
o loo
sen the wheel bolts.
Loosen the wheel bolts only about one turn
before raising the vehicle with the jack. If the wheel bolt is very tight, carefully push
on the end of the wheel wr
ench with your
foot. Hold on to the vehicle for support and
take care not to slip during this operation.
Loosening wheel bolts
● Fit the wheel wrench on as far as it will go
›››
Fig. 80.
● Hold the wrench at the end and rotate the
bolt ap
proximately one turn anticlock-
wise ››› in Removing and fitting the wheel
on p ag
e 65
.
The caps protect the wheel bolts and should
be pushed fully on again after changing the
tyre.
Loosening the anti-theft wheel bolt
● Take the adapter for the anti-theft wheel
bolts out
of the vehicle tool kit.
● Insert the adapter fully onto the anti-theft
wheel bolt
››› Fig. 81.
● Fit the wheel wrench as far as it will go over
the adapt
er.
● Hold the wrench at the end and rotate the
bolt ap
proximately one turn anticlock-
wise ››› in Removing and fitting the wheel
on p ag
e 65
.
The anti-theft wheel bolt has a different cap.
This cap only fits on anti-theft locking bolts
and is not for use with standard wheel bolts. Important information about wheel bolts
Factor
y-fitted rims and wheel bolts are spe-
cially matched during construction. There-
fore, if different rims are fitted, the correct
wheel bolts with the right length and heads
must be used. This ensures that wheels are
fitted securely and that the brake system
functions correctly.
In certain circumstances, you should not
even use wheel bolts from vehicles of the
same model.
In wheels with full hubcaps, the anti-theft
locking bolt must be threaded onto positions 2 or
3 , taking the tyre valve’s position as
r ef
er
ence 1 . Otherwise it will not be possi-
b l
e t
o mount the hubcap. 63
Page 66 of 308

The essentials
Raising the vehicle Fig. 82
Jack position points. Fig. 83
Fitting the jack. ●
Place the jack* (vehicle tools) on firm
gr ou
nd. If
necessary use a large, strong
board or similar support. If the surface is slip-
pery (for example tiles) place the jack on a
rubber mat or similar to prevent it from slip-
ping ››› . ●
Find the s up
por
t point on the strut (sunken
area) closest to the wheel to be changed
››› Fig. 82.
● Turn the jack* crank handle, located below
the strut s
upport point, to raise it until the
tab 1
› ››
Fig. 83
i
s below the housing provi-
ded.
● Align the jack* so that tab 1 “grips” onto
the hou s
in
g provided on the strut and the
mobile base 2 is resting on the ground. The
b a
se p
late 2 should fall vertically with re-
s pect
t
o the support point 1 .
● Continue turning the jack* until the wheel
i s
s
lightly lifted off the ground. WARNING
● Mak e s
ure that the jack* remains stable. If
the surface is slippery or soft, the jack* could
slip or sink, respectively, with the resultant
risk of injury.
● Only raise the vehicle with the jack* sup-
plied by
the manufacturer. Other vehicles
could slip, with the consequent risk of injury.
● Only mount the jack* on the support points
designed f
or this purpose on the strut, and
always align the jack correctly. If you do not,
the jack* could slip as it does not have an ad-
equate grip on the vehicle: risk of injury!
● The height of the parked vehicle can
chan
ge as a result of variations in tempera-
ture and loading. CAUTION
The vehicle must not be raised on the cross-
bar . On
ly place the jack* on the points de-
signed for this purpose on the strut. Other-
wise, the vehicle may be damaged. Removing and fitting the wheel
Change the wheel after loosening the wheel
bolts
and r
aising the vehicle with the jack.
Taking off the wheel
● Unscrew the wheel bolts using the box
sp anner and p
lace them on a clean surface.
● Take off the wheel ›››
.
P uttin
g on the s
pare wheel
When fitting tyres with a compulsory rotation
direction, observe the instructions in
››› page 65.
● Mount the wheel.
● Screw on the wheel bolts in position and
tighten them loosely
with a box spanner.
● Carefully lower the vehicle using the jack*.
● Tighten the wheel bolts in diagonal pairs
usin
g the wheel brace.
The wheel bolts should be clean and turn
easily. Before fitting the spare wheel, inspect 64
Page 67 of 308

The essentials
the wheel condition and hub mounting surfa-
c e
s.
These surfaces must be clean before fit-
ting the wheel.
Wheel bolt tightening torque
The prescribed tightening torque for wheel
bolts for steel and alloy wheels is 140 Nm.
After changing a wheel, have the tightening
torque checked immediately with a torque
wrench that is working perfectly.
Before checking tightening torque, have any
rusty wheel bolts that are difficult to screw re-
placed and clean the wheel hub threads.
Never apply grease or oil to wheel bolts or to
the wheel hub threads. Even if the bolts have
been tightened to the prescribed torque, they
could come loose while driving. WARNING
If the wheel bolts are not properly tightened,
they c ou
ld come loose while driving and
cause an accident, serious injury and loss of
vehicle control.
● Use only wheel bolts which correspond to
the rim in question.
● Nev
er use different wheel bolts.
● Wheel bolts and threads should be clean,
free of oi
l and grease, and it should be possi-
ble to screw them easily.
● To loosen and tighten wheel bolts, only use
the wheel wrenc
h that came with the car from
the factory. ●
Loo sen the wheel
bolts only about one turn
before raising the vehicle with the jack.
● Never apply grease or oil to wheel bolts or
to the wheel hub thr
eads. Even if the bolts
have been tightened to the prescribed tor-
que, they could come loose while driving.
● Never loosen the screwed joints of wheel
rims with bo
lted ring trims.
● If wheel bolts are tightened below the pre-
scribed t
orque, the bolts and rims could come
loose while driving. If tightening torque is too
high, the wheel bolts or threads can be dam-
aged. CAUTION
When removing/fitting the wheel, the rim
ma y
hit and damage the brake disc. For this
reason, please take care and get a second
person to assist you. Tyres with compulsory rotation direc-
tion
A directional tread pattern can be identified
b
y
the arr
ows on the sidewall that point in
the direction of rotation. Always observe the
direction of rotation indicated when fitting
the wheel to guarantee optimum properties
of this type of tyres with regard to grip,
noises, wear and aquaplaning.
If it is absolutely necessary to fit the spare
tyre* against the direction of rotation, drive with care as this means the tyre does not of-
fer optimum drivin
g properties. This is of par-
ticular importance when the road surface is
wet.
To return to directional tread tires, replace
the punctured tyre as soon as possible and
restore the obligatory direction of rotation of
all tyres.
Subsequent work ●
Alloy wheels: rep
l
ace the wheel bolt caps.
● Plate wheels: repl
ace the wheel hubcap.
● Return all tools to their proper storing loca-
tion.
● If the replaced wheel does not fit in the
spar
e wheel housing, store it safely in the
luggage compartment ›››
page 152.
● Check the tyre pressure of the newly moun-
ted tyr
e as soon as possible.
● In vehicles fitted with a tyre pressure indi-
cator
, adjust the pressure and store it in
memory ›››
page 282.
● Have the tightening torque of the wheel
bolts c
hecked as soon as possible with a tor-
que wrench (it should be 120 Nm). Mean-
while, drive carefully.
● Have the flat tyre replaced as quickly as
pos s
ible. 65
Page 68 of 308

The essentials
Snow chains U se Snow chains should only be used on the
fron
t
wheels.
● Check that they are correctly seated after
driving f
or a few yards; correct the position if
necessary, in accordance with the manufac-
turer's fitting instructions.
● Keep your speed below 50 km/h (30 mph).
● If there is a danger of being trapped de-
spit e h
aving mounted the chains, it is best to
disable the driving wheels (ASR) in the ESC
››› page 177.
Snow chains will improve braking ability as
well as traction in winter conditions.
For technical reasons snow chains may only
be used with the following wheel rim/tyre
combination.
195/60 R16Chains with links of maximum 13.5
mm Remove wheel covers and any integral trim
rin
g bef
or
e fitting snow chains.
Remove the chains when roads are free of
snow. Driving characteristics worsen, and the
wheels become damaged quickly and may
even be rendered unusable. WARNING
Snow chains should be correctly tightened in
acc or
dance with the manufacturer's instruc-
tions. This will prevent the chains coming in-
to contact with the wheel housing. Emergency towing of the vehi-
cl
e
T
owing Fig. 84
Right side of the front bumper: Tow-
in g rin
g. Fig. 85
Right side of the rear bumper: Towing
ring. Towline anchorages
Att
ac
h the b
ar or rope to the towline ancho-
rages.
The towline anchorages are located under
the floor panel in the luggage compartment,
next to the vehicle tools ››› page 61.
Screw the towline anchorage into the screw
connection ››› Fig. 84 o ››› Fig. 85 and tighten
it with the wheel brace.
Tow rope or tow bar
It is easier and safer for the vehicle to be tow-
ed using a tow bar. You should only use a
tow-rope if you do not have a tow-bar.
A tow rope should be slightly elastic to re-
duce the loading on both vehicles. It is advis-
able to use a tow rope made of synthetic fi-
bre or similarly elastic material. 66
Page 69 of 308

The essentials
Attach the tow rope or the tow bar only to the
t o
wline anc
horages provided or a towing
bracket.
Notes for the driver of the towing vehicle
● The tow rope must be taut before you drive
off.
● Rel
ease the clutch very carefully when start-
ing the v
ehicle (manual gearbox), or acceler-
ate gently (automatic gearbox).
Driving style
Towing requires some experience, especially
when using a tow rope. Both drivers should
realise how difficult it is to tow a vehicle. In-
experienced drivers should not attempt to
tow.
Do not pull too hard with the towing vehicle
and take care to avoid jerking the tow rope.
When towing on an unpaved road, there is al-
ways a risk of overloading and damaging the
anchorage points.
The ignition of the vehicle being towed must
be switched on to prevent the steering wheel
from locking and also to allow the use of the
turn signals, horn, windscreen wipers and
washers.
Place the gear lever in neutral on vehicles
with a manual gearbox. With an automatic
gearbox, place the lever in N. The brake servo only works when the engine
is ru
nning. When not running, you must ap-
ply considerably more pressure to the brake
pedal.
As the power assisted steering does not work
if the engine is not running, you will need
more strength to steer than you normally
would.
››› in General information on page 96
››› page 96 Tow-starting
If the engine will not start, first try starting it
u
s
in
g the battery of another vehicle
››› page 67. You should only attempt to tow-
start a vehicle if charging the battery does
not work. This is done by leveraging wheel
movement.
When tow-starting a vehicle with a petrol en-
gine, do not tow it more than a short dis-
tance, otherwise unburned fuel can enter the
catalytic converter.
However, if your vehicle has to be tow-star-
ted:
● Engage 2 nd
or 3 rd
ge
ar.
● Keep the clutch pressed down. ●
Switc
h the ignition on.
● Once both vehicles are moving, release the
clutc
h.
● As soon as the engine starts, press the
clutc
h and move the gear lever into neutral.
This helps to prevent driving into the towing
vehicle.
››› in General information on page 96
››› page 96 How to jump start
Jump l e
a
ds The jump lead must have a sufficient wire
c
r
o
ss section.
If the engine fails to start because of a dis-
charged battery, the battery can be connec-
ted to the battery of another vehicle to start
the engine.
Jump leads
Jump leads must comply with standard DIN
72553 (see cable manufacturer's instruc-
tions). The wire cross section must be at least
25 mm 2
for petrol engines and at least
35 mm 2
for diesel engines. » 67
Page 70 of 308

The essentials
Note
● The v ehic
les must not touch each other,
otherwise electricity could flow as soon as
the positive terminals are connected.
● The discharged battery must be properly
connected t
o the on-board network. How to jump start: description
Fig. 86
Diagram of connections for vehicles
w ithout
Start-Stop system. Fig. 87
Diagram of connections for vehicles
with St
art-Stop system. Jump lead terminal connections
1. Switch off the ignition of both vehicles
››
›
.
2. Connect one end of the re
d
jump lead to
the positive + terminal of the vehicle
w ith the fl
at
battery A
› ›
› Fig. 86 .
3. Connect the other end of the red
jump
lead to the positive terminal + in the ve-
hic l
e pr
oviding assistance B .
4. For vehicles without Start-Stop system:
connect
one end of
the black jump lead to
the negative terminal – of the vehicle
pr o
v
iding the current B
› ›
› Fig. 86 .
– For vehicles with Start-Stop system: con-
nect one end of
the black jump lead X to a
s uit
ab
le ground terminal, to a solid piece of
metal in the engine block, or to the engine
block itself ››› Fig. 87. 5. Connect the other end of the
black
jump
lead X to a solid metal component bolted
t o the en
gine b
lock or to the engine block
itself of the vehicle with the flat battery.
Do not connect it to a point near the bat-
tery A .
6. Position the leads in such a way that they cannot
c
ome into contact with any moving
parts in the engine compartment.
Starting
7. Start the engine of the vehicle with the boostin
g battery and let it run at idling
speed.
8. Start the engine of the vehicle with the flat batter
y and wait for 2 or 3 minutes until
the engine is running.
Removing the jump leads
9. Before you remove the jump leads, switch off the dipped be
am headlights if they are
switched on.
10.
Turn on the heater blower and heated rear
window in the vehicle with the flat battery.
This helps minimise voltage peaks which
are generated when the leads are discon-
nected.
11.When the engine is running, disconnect the lea
ds in reverse order to the details
given above. 68
Page 71 of 308

The essentials
Make sure the battery clamps have sufficient
met al-t
o-met
al contact with the battery termi-
nals.
If the engine fails to start, switch off the start-
er after about 10 seconds and try again after
about a minute. WARNING
● Ple a
se note the safety warnings referring to
working in the engine compartment
››› page 267, Working in the engine
compartment.
● The battery providing assistance must have
the same v
oltage as the flat battery (12 V)
and approximately the same capacity (see
imprint on battery). Failure to comply could
result in an explosion.
● Never use jump leads when one of the bat-
teries
is frozen. Danger of explosion! Even af-
ter the battery has thawed, battery acid could
leak and cause chemical burns. If a battery
freezes, it should be replaced.
● Keep sparks, flames and lighted cigarettes
awa
y from batteries, danger of explosion.
Failure to comply could result in an explo-
sion.
● Observe the instructions provided by the
manufact
urer of the jump leads.
● Do not connect the negative cable from the
other vehic
le directly to the negative terminal
of the flat battery. The gas emitted from the
battery could be ignited by sparks. Danger of
explosion. ●
Never att ac
h the negative cable to fuel sys-
tem components or the brake lines in the oth-
er vehicle.
● The non-insulated parts of the battery
clamp
s must not be allowed to touch. The
jump lead attached to the positive battery
terminal must not touch metal parts of the ve-
hicle, this can cause a short circuit.
● Position the leads in such a way that they
cannot c
ome into contact with any moving
parts in the engine compartment.
● Do not lean on the batteries. This could re-
sult
in chemical burns. Note
The vehicles must not touch each other, oth-
erw i
se electricity could flow as soon as the
positive terminals are connected. Changing the windscreen wiper
b
l
a
des
Changing the wiper blades Fig. 88
Wipers in service position. Fig. 89
Changing the windscreen wiper
b l
a
de. To change the blades it is necessary to move
the w
iper
s
from the rest position into the
service position. » 69
Page 72 of 308

The essentials
Do not change the windscreen wipers when
out of
the ser
vice position, as it could cause
paint to flake off the bonnet due to friction
with the windscreen wiper arm.
Service position (for changing wiper blades)
● Ensure that the wiper blades are not frozen.
● Turn the ignition on and off and then (with-
in appro
ximately 9 seconds) push the wind-
screen wiper lever down (short wipe). The
windscreen wipers will move to the service
position ››› Fig. 88.
Removing the wiper blade
● Lift the windscreen wiper arm.
● Press the securing tab down 1
› ›
› Fig. 89
.
● Extract the wiper blade from the wiper arm.
Fitting the wiper b
lade
● Insert the wiper blade onto the windscreen
wiper arm unti
l it clicks into place.
● Place the windscreen wiper arms to their in-
itial po
sition.
››› in Changing the windscreen and
rear window wiper blades on page 96
››› page 96 Changing the rear window wiper blade
Fig. 90
Removing and fitting the rear window
w iper b
l
ade. Removing the wiper blade
● Lift the wiper arm away from the glass
● Slide the blade adapter in the direction of
the arr o
w and r
emove the blade ››› Fig. 90 A.
Fitting the wiper blade
● With one hand, hold the top end of the wip-
er arm.
● Place the blade as shown in ›››
Fig. 90 B
and slide the adapter along until it engages.
››› in Changing the windscreen and
rear window wiper blades on page 96
››› page 96 70