Wheels and tyres231
Safety First
Operating instructions
Practical tips
Te c h n i c a l D a t a
Wear indicators
The original tyres on your vehicle have 1.6 mm high “tread wear indicators”
⇒
page 230, fig. 173 , running across the tread. Depending on the make,
there will be six to eight of them evenly spaced around the tyre. Markings on
the tyre sidewall (for instance the letters “TWI” or other symbols) indicate the
positions of the tread wear indicators. The minimum tread depth required by
law is 1.6 mm (measured in the tread grooves next to the tread wear indica-
tors). Worn tyres must be replaced. Different figures may apply in export
countries ⇒.
Tyre pressure
Under-inflation or over-inflation will reduce the life of the tyres considerably
and also impair the car's handling. The inflation pressures are listed on a
sticker on the inside of the fuel tank flap.
Correct inflation pressures are very important, especially at high speeds. The
pressure should therefore be checked at least once a month and before
starting any long journey.
Tyre pressure monitoring (RKA+)*
Monitoring of the tyre pressures is based on the tyre pressures you have
stored. The tyre pressure monitoring syst em cannot function as intended if
you store tyre pressure settings for a normal load, but then drive with the
vehicle fully laden. The tyre pressure must be adapted to the actual load and
stored accordingly in the tyre pressure monitoring system ⇒page 229.
Driving style
Fast cornering, heavy acceleration and hard braking all increase tyre wear.
Changing wheels around
If the front tyres are worn considerably more than the rear ones it is advisable
to change them around as shown ⇒page 230, fig. 174 . All the tyres will then
last for about the same time. Wheel balance
The wheels on new vehicles are balanced. However, various factors encoun-
tered in normal driving can cause them to become unbalanced, which results
in steering vibration.
Unbalanced wheels should be rebalanced, as they otherwise cause excessive
wear on steering, suspension and tyres. A wheel must also be rebalanced
when a new tyre is fitted.
Incorrect wheel alignment
Incorrect wheel alignment causes excessive tyre wear, impairing the safety of
the vehicle. If tyres show excessive wear, you should have the wheel align-
ment checked by an Authorised Service Centre.
WARNING
There is a serious danger of accidents if a tyre bursts during driving!•
The tyres must be replaced at the latest when the tread is worn down to
the tread wear indicators. Failure to do so could result in an accident. Worn
tyres do not grip well at high speeds on wet roads. There is also a greater
risk of “aquaplaning”
•
At continuously high speeds, a tyre with insufficient pressure flexes
more. This causes it to overheat. This can cause tread separation and tyre
blow-out. Risk of accident. Always observe the recommended tyre pres-
sures.
•
If tyres show excessive wear, you should have the running gear checked
by an Authorised Service Centre.
•
Keep chemicals such as oil, fuel and brake fluid away from tyres.
•
Damaged wheels and tyres must be replaced immediately!For the sake of the environment
Under-inflated tyres will increase fuel consumption.
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Wheels and tyres
232Anti-puncture tyres*
Anti-puncture tyres allow you to continue driving even with a
punctured tyre, in the majority of cases.Vehicles equipped with anti-puncture
4) tyres from the factory indi-
cate the loss of tyre pressure on the instrument panel.
Driving with anti-puncture tyres (emergency gear)
– Leave the ESP/TCS (electronic stabilisation programme) switched on, or switch on ⇒page 68.
– Continue driving carefully and slowly (80 km/h maximum).
– Avoid sudden manoeuvres and sharp turns.
– Avoid driving over obstacles (for example kerbs) or potholes.
– Look out for the ESP/TCS intervening often, smoke coming from the tyres or the smell of rubber, the vehicle vibrating or a clat-
tering noise. If any of these occur, stop the vehicle.
The anti-puncture tyres have a tag on the side of the tyre, with the description:
“DSST”, “Eufonia”, “RFT”, “ROF”, “RSC”, “SSR” or “ZP”.
The sides of this type of tyre are reinforced. When the tyres lose air they are
supported on the sides (emergency driving).
The loss of pressure in the tyre is shown on the instrument panel. You can
then drive a maximum of 80 km and if the circumstances are favourable (for
example, low load), even more.
The damaged tyre should be changed as soon as possible. The rim should be
checked in a specialist workshop to detect possible damage and replace it if necessary. We recommend you contact Technical Service. If more than one
tyre is being used under emergency conditions, this reduces the distance
which can be travelled.
Starting driving in emergency conditions
At the moment the loss of tyre pressure is indicated on the instrument panel,
at least one of the tyres is running in an emergency state
⇒.
End of emergency operation
Do not drive on if:
•
smoke is coming from one of the tyres,
•
there is a smell of rubber,
•
the vehicle vibrates,
•
there is a rattling noise.
When is it no longer possible to co ntinue driving even using anti-puncture
tyres?
•
If the Electronic Stabilisation Program (ESP) is out of operation.
•
If the tyre pressure monitoring system is out of operation.
•
If one of the tyres has been severely damaged in an accident, etc. If a tyre
has been badly damaged there is a risk that parts of the tread can be thrown
off and cause damage to the fuel lines, brake pipes or fuel filler.
•
It is also advisable to stop driving if severe vibrations occur, or if the wheel
starts overheating and gives off smoke.
WARNING
When driving in emergency conditions, the driving quality of the vehicle is
considerably impaired.•
The maximum permitted speed of 80 km/h is subject to road and
weather conditions. Please observe legal requirements when doing so.
•
Avoid sharp turns and rapid manoeuvres, and brake earlier than usual.
4)Depending upon version and country.
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If and when
248Fuse assignment
This list shows the fuses which can be replaced relatively
easily by the owner.No.
Consumer
Amps
1
Climate control
10
2
Footwell lamps
5
3
Heated washer jets
5
4
Radiator fan
5
5
Telephone, multifunction switch, rear window sun
blind
10
6
Air conditioner (air purity sensor), pressure sensor
5
7
Electronic Stabilisation Pro gram (ESP), brake light
switch, clutch pedal switch, steering angle sensor
10
8
Telephone
5
9
Brake servo (vacuum pump)
15
10
Self-directing headlights (adaptive light) right
5
11
Tyre pressure monitoring
12
Diagnostic socket
10
13
Steering column unit
10
14
Brake lights
10
15
instrument panel
10
16
Vacant
5
17
Parking aid, self-levelling suspension, tyre pressure
monitoring system, rain/ light sensor
10
18
Self-directing headlights (adaptive light) left
5
19
Fog lights
15
20
Vacant
21
Vacant
22
Driver's door / front passenger's door
15
23
Rear doors
15
24
Central electrics unit for convenience equipment
20
25
Heater blower
30
26
Rear window heater
30
27
Electrical socket for trailer (control unit)
30
28
Fuel pump, auxiliary pump for diesel
20
29
Vacant
30
Sliding/tilting sunroof
20
31
Diagnosis connection, automatic anti-dazzle interior
mirror with automatic adjustment
15
32
Towing socket
15
33
Lighter
20
34
Vacant
35
Luggage compartment power point*
20
36
Wiper system
30
37
Pump for windscreen washer and headlight washer
system
30
38
Central electrics unit for convenience equipment, bon-
net unlocking
15
39
Radio
20
No.
Consumer
Amps
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If and when249
Safety First
Operating instructions
Practical tips
Te c h n i c a l D a t a
Some of the electrical items listed in
the table are only fitted on certain
models or are optional extras.
The electric windows and electric seat adjusters are protected by circuit
breakers. These reset automatically after a few seconds when the overload
(caused for example by frozen windows) has been corrected.
Note
Please note that the above list contains all data at the time of going to press,
so it is subject to modifications. If discrepancies should occur, please refer to
the sticker on the inside of the fuse cover for the correct information for your
model.BulbsGeneral notesYou can change the following bulbs for exterior lights yourself:•
Main headlights: all (exc ept for xenon headlights)
•
Rear lights: All bulbs
•
Bulb for side indicator The following bulbs can only be changed by a
qualified workshop:
•
Main headlights: Xenon* bulb ⇒page 256
•
Front fog lights: Bulb
As a rule, you require a certain degree of practical skill to change defective
bulbs. This applies in particular to those bulbs which are only accessible from
the engine compartment.
If in doubt, we recommend that you have defective bulbs changed by a qual-
ified workshop or qualified mechanic.
If you do decide to change bulbs in the engine compartment yourself, be
aware of the safety risks involved ⇒page 213 ⇒ in “Types of bulbs”.
Changing bulbs Halogen headlightsTypes of bulbsYou must only replace a bulb with a bu lb of the same type. The name can be
found on the base of the bulb.
WARNING
•
Take particular care when working on components in the engine
compartment if the engine is warm - risk of burns!
40
Horn
25
41
Va ca n t
30
42
Electronic stabilisation programme (ESP)
25
43
Engine management
15
44
Seat heating
35
No.
Consumer
Amps
Bulb
Typ e
Dipped-beam headlights (halogen)
12 V/55 W (H7, H7 LL)
Main beam headlights
12 V/55 W (H1)
Indicator light
12 V/21 W (PY21W)
Side lights
12 V/5 W (W5W LL)
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If and when
250•
Bulbs are highly sensitive to pressure. The glass can break when you
touch the bulb, causing injury.
•
The high voltage element of gas discharge lamps* (xenon light) must
be handled correctly. Otherwise, there is a risk of death.
•
When changing bulbs, please take care not to injure yourself on sharp
parts in the headlight housing.Caution
•
Remove the ignition key before working on the electric system. If not, a
short circuit could occur.
•
Switch off the lights or parking lights before you change a bulb.For the sake of the environment
Please ask your specialist retailer how to dispose of used bulbs in the proper
manner.
Note
•
Depending on weather conditions (cold or wet), the front lights, the fog
lights, the rear lights and the indicato rs may be temporarily misted. This has
no influence on the life expectancy of the lighting system. By switching on the
lights, the area through which the beam of light is projected will quickly be
demisted. However, the edges may continue to be misted.
•
Please check at regular intervals that all lighting (especially the exterior
lighting) on your vehicle is functioning pr operly. This is not only in the interest
of your own safety, but also in that of all other road users.
•
Before changing a bulb, make sure you have the correct new bulb.
•
Do not touch the glass part of the bulb with your bare hands, use a cloth
or paper towel instead. Otherwise, the fingerprints left on the glass will vaporise as a result of the heat generated by the bulb, be deposited on the
reflector and impair its surface.
Removing the air duct
The air duct has to be removed to gain access to the bulbs for
the right-side headlight.–Unscrew bolts ⇒
fig. 187.
– Detach air duct from guide and take it out.
WARNING (continued)
Fig. 187 Air duct on right
side of vehicle
AA
AB
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If and when257
Safety First
Operating instructions
Practical tips
Te c h n i c a l D a t a
WARNING
•
Take particular care when working on components in the engine
compartment if the engine is warm - risk of burns!
•
Bulbs are highly sensitive to pressure. The glass can break when you
touch the bulb, causing injury.
•
The high voltage element of gas discharge lamps* (xenon light) must
be handled correctly. Otherwise, there is a risk of death.
•
When changing bulbs, please take care not to injure yourself on sharp
parts in the headlight housing.Caution
•
Remove the ignition key before workin g on the electric system. If not, a
short circuit could occur.
•
Switch off the lights or parking lights before you change a bulb.For the sake of the environment
Please ask your specialist retailer how to dispose of used bulbs in the proper
manner.
Note
•
Depending on the weather conditions (cold, humidity), the front head-
lights and front lights, the rear pilots and the indicators could steam up. This phenomenon has no influence on the life
expectancy of the vehicle lights. If
headlamps are switched on, the area where the light shaft is projected, is
demisted in little time. However, the edges may be steamed up on the inte-
rior.
•
Please check at regular intervals that all lighting (especially the exterior
lighting) on your vehicle is functioning pr operly. This is not only in the interest
of your own safety, but also in that of all other road users.
•
Before changing a bulb, make sure you have the correct new bulb.
•
Do not touch the glass part of the bulb with your bare hands, use a cloth
or paper towel instead. Otherwise, the fingerprints left on the glass will
vaporise as a result of the heat generated by the bulb, be deposited on the
reflector and impair its surface.
Removing the air duct
The air duct has to be removed to gain access to the bulbs for
the right-side headlight.
Bulb
Typ e
Xenon bulbs
12 V/35 W (D1S)
DRL (day light)
12 V/21 W (P21W SLL)
Indicator light
12 V/21 W (PY21W)
Side lights
12 V/5 W (W5W blue LL)
Fig. 199 Air duct on right
side of vehicle
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If and when
274To w i n g a n d t o w - s t a r t i n gTo w - s t a r t i n g
The use of jump leads is preferable to tow-starting.We recommend that you do not t o w - s t a r t yo u r v e h i c l e . J u m p - s ta r t i n g
is preferable ⇒page 271.
However, if your vehicle has to be tow-started:
– Engage the 2
nd or the 3
rd gear.
– Keep the clutch pressed down.
– Switch the ignition on.
– Once both vehicles are moving, release the clutch.
– As soon as the engine starts, press the clutch and move the gear lever into neutral. This helps to prevent driving into the towing
vehicle.
WARNING
The risk of accidents is high when tow-starting. The vehicle being towed
can easily collide with the towing vehicle.
Caution
When tow-starting, fuel could enter the catalytic converter and damage it.
CommentsPlease observe the following points if you use a tow-rope:
Notes for the driver of the towing vehicle
– Drive slowly at first until the tow-rope is taut. Then accelerate gradually.
– Begin and change gears cautiously. If you are driving an auto- matic vehicle, accelerate gently.
– Remember that the brake servo and power steering are not working in the vehicle you are towing. Brake earlier than you
would normally, but with a more gentle pressure on the brake.
Notes for the driver of the towed vehicle
– Ensure that the tow-rope remains taut at all times when towing.Tow-rope or tow-bar
It is easier and safer to tow a vehicle with 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 reduce the loading on both vehicles.
It is advisable to use a tow-rope made of synthetic fibre or similarly elastic
material.
Attach the tow-rope or the tow-bar only to the towing eyes provided or a
towing bracket.
Driving style
Towing requires some experience, espec ially when using a tow-rope. Both
drivers should be familiar with the te chnique required for towing. Inexperi-
enced drivers should not attempt to tow-start or tow away another vehicle.
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General notes on the technical data
280WeightsKerb weight refers to the basic model with a fuel tank filled to 90% capacity
and without optional extras. The figure quoted includes 75 kg to allow for the
weight of the driver.
For special versions and optional equipment fittings or for the addition of
accessories, the weight of the vehicle will increase ⇒.
WARNING
•
Please note that the centre of gravity may shift when transporting
heavy objects; this may affect the vehi cle's handling and lead to an acci-
dent. Always adjust your speed and dr iving style to suit road conditions
and requirements.
•
Never exceed the gross axle weight rating or the gross vehicle weight
rating. If the allowed axle load or the allowed total weight is exceeded, the
driving characteristics of the vehicle may change, leading to accidents,
injuries and damage to the vehicle.
To w i n g a t r a i l e rTrailer weightsTrailer weights
The trailer weights and drawbar loads approved are selected in intensive
trials according to precisely defined criteria. The approved trailer weights are
valid for vehicles in the EU for maximum speeds of 80 km/h (in certain
circumstances up to 100 km/h). The figu res may be different in other coun-
tries. All data in the official vehicl e documents take precedence over these
data ⇒ . Drawbar load
The
maximum permitted weight exerted by the trailer drawbar on the ball joint
of the towing bracket must not exceed 75 kg.
In the interest of road safety, we recommend that you always tow
approaching the maximum drawbar load. The response of the trailer on the
road will be poor if th e drawbar load is too small.
If the maximum permissible drawbar load cannot be met (e.g. with small,
empty and light-weight single axle trailers or tandem axle trailers with an axle
base of less than 1 metre), at least 4% of the actual trailer weight is a legal
stipulation for a drawbar load.
WARNING
•
For safety reasons, do not exceed the 80 km/h limit. This is also valid in
countries where higher speeds are permitted.
•
Never exceed the maximum trailer weights or the draw bar loading. If
the permissible axle load or the perm issible total weight is exceeded, the
driving characteristics of the vehicle may change, leading to accidents,
injuries and damage to the vehicle.
WheelsTyre pressure, snow chains, wheel boltsTyre pressures
The sticker with the tyre pressure values can be found on the inside of the
tank flap. The tyre pressure values given there are for cold tyres. The slightly
raised pressures of warm tyres must not be reduced ⇒.
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