Wheels and tyres
228
2. The tyre pressures should only be checked when the tyres are cold. The slightly raised pressures of warm tyres must not be
reduced.
3. Adjust the tyre pressure to the load you are carrying.Tyre pressure
The correct tyre pressure is especially important at high speeds. The pressure
should therefore be checked at least once a month and before starting a
journey.
The sticker with the tyre pressure values can be found on the inside of the
tank flap. The tyre pressure values given are for cold tyres. The slightly raised
pressure of warm tyres must not be reduced ⇒.
WARNING
•
Check the tyre pressure at least once per month. Checking tyre pressure
value is very important. If the tyre pressure is too high or too low, there is
an increased danger of accidents - particularly at high speeds.
•
A tyre can easily burst if the pressure is too low, causing an accident!
•
At continuously high speeds, a tyre with insufficient pressure flexes
more. In this way it becomes too hot, and this can cause tread separation
and tyre blow-out. Always observ e the recommended tyre pressures.
•
If the tyre pressure is too low or too high, the tyres will wear prema-
turely and the vehicle will not h andle well. Risk of accident!For the sake of the environment
Under-inflated tyres will increase fuel consumption.
Tyre pressure monitoring
The tyre pressure monitoring system constantly checks the
pressure of the tyres.The system warns the driver in the event of a loss of pressure by means of
symbols and messages in the instrument cluster display.
Note that tyre pressure also depends on tyre temperature. Tyre pressure
increases about 0.1 bar for each 10°C in tyre temperature increase. The tyre
heats up while the vehicle is being driven and the tyre pressure will rise
accordingly. For this reason, you should only adjust the tyre pressures when
they are cold (i.e. approximat ely at ambient temperature).
To ensure that the tyre pressure monitoring system works reliably, you should
check and, if necessary, adjust the tyre pressures at regular intervals and
store the correct pressures (reference values) in the system.
A tyre pressure information label is attached to the inside of the fuel tank flap.
WARNING
•
Never adjust tyre pressure when the tyres are hot. This may damage or
even burst the tyres. Risk of accident!
•
An insufficiently inflated tyre flexes a lot more at high speeds and
causes significant heating of the ty re. Under these conditions, the tyre
bead may be released or the tyre may burst. Risk of accident!For the sake of the environment
Under-inflated tyres lead to increased fuel consumption and tyre wear.
Exeo_EN.book Seite 228 Freitag, 17. Oktober 2008 11:24 11
Wheels and tyres229
Safety First
Operating instructions
Practical tips
Te c h n i c a l D a t a
Significant tyre pressure lossThe tyre symbol
is displayed and indicates that the tyre pressure for a least
one tyre is insufficient.
- Stop the vehicle.
- Switch the engine off.
- Check the tyre(s).
- Change the wheel if necessary.
Tyre pressure monitoring (RKA+)*
The type pressure monitor display on the instrument panel
indicates that the pressure is too low.The tyre pressure monitoring system makes use of the ABS sensors to
compare the rolling circumference and the frequency characteristics of the wheels. If the rolling cir
cumference or frequency characteristic changes on
one or more wheels, the tyre pressure warning lamp
will light up. The fault
will also be indicated by a warning buzzer. The position of the affected tyre
will also be shown (if only one tyre is affected) on the centre display of the
instrument panel.
The rolling circumference and frequency characteristics can change if:
•
the tyre pressure is too low.
•
the tyre has suffered structural damage.
•
the wheels or the inflation pressures have been changed without initial-
ising the system (see Adjusting the tyre pressure settings).
•
there is a greater load on the wheels of one axle (e.g. if you are carrying
more passengers or luggage).
•
the road surface under the left wheels is different to the road surface
under the right wheels for a long period.
•
when driving with snow chains.
Adjusting the tyre pressure settings (initialising the tyre pressure
monitoring system)
After any incident regarding the wheels of your vehicle, e.g. after modify the
tyre pressure ⇒page 230 or after changing of swapping around wheels ⇒
page 180 - with the vehicle at a standstill and the engine running - press
⇒ fig. 172 . The yellow warning lamp
will light up. Hold the button down
for 2 seconds until the warning lamp goes out and an acoustic warning is
given. You can now release the button.
If the wheels are subjected to extremely stress (e.g. heavy load), the tyre pres-
sure must be increased to the recommended value for the maximum load
(see the adhesive label on the inside of the fuel tank flap) and then initialise
the system.
Tyre pressure warning lamp on
When you switch on the ignition, the tyre pressure warning lamp
will light
up. If the warning lamp flashes and then remains lit after you switch on the
ignition, there is a fault in the system. The instrument panel also display
Fig. 172 Detailed view of
the centre console: Button
for the tyre pressure
monitoring system
Exeo_EN.book Seite 229 Freitag, 17. Oktober 2008 11:24 11
Wheels and tyres
230TMPS (Tyre Pressure Monitoring Syst em). Please contact the nearest
specialist garage as soon as possible.
The tyre pressure warning lamp
lights up if the tyre pressure on one or
more wheels is significantly lower than the tyre pressure setting which was
confirmed by the driver ⇒.
WARNING
•
If the tyre pressure warning lamp lights up
you must slow down
immediately and avoid any severe braking or steering manoeuvres. Stop
the vehicle as soon as possible and check the tyres and their pressure.
•
The driver is responsible for maintaining correct tyre pressures. There-
fore, the tyre pressure must be regularly checked.
•
Under certain conditions (e.g. drivin g at high speeds, on ice and snow
or on poor road surfaces) the tyre pressure warning lamp
may not light
up immediately or not at all.
•
Please ask your Dealer or specialist garage whether run-flat tyres can
be used on your vehicle. Fitting this type of tyre in an undue manner could
lead to your driving licence being taken away from you. Furthermore, it may
led to damage to the vehicle or, un der certain circumstances, may cause
accidents.
•
If you change normal tyres for run-flat tyres or vice versa, the control
unit must be reprogrammed by the Dealer or a specialist garage.Note
If you did not press the button for the tyre pressure monitoring system to
confirm a new tyre pressure setting after making changes to the tyre pres-
sures or changing one or more wheels, the warning lamp
may light up
although the tyre pressures are correct. In this case, stop the vehicle as soon
as possible and, after examining the tyres, press the button for the tyre pres-
sure monitoring system.
Tyre service life
The service life of tyres is dependent on tyre pressure, driving
style and fitting.
Fig. 173 Tyre tread wear
indicatorsFig. 174 Diagram for
changing wheels
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If and when
238Your vehicle can be equipped with a steel spare wheel at the factory. The
spare wheel does not usually meet the same performance standards as the
wheels fitted on the vehicle because of the wheel/tyre dimensions, rubber
composition, tread pattern, etc. Theref ore, note the following restrictions:•
The spare steel rim wheel is designed on ly for your vehicle model. Do not
attempt to mount the wheel on any vehicle but your own.
•
Your vehicle will have different driving characteristics when the spare
steel rim wheel is mounted ⇒.
•
The spare wheel is only intended for temporary use after having a flat tyre.
Replace the spare wheel with a normal wheel that has the proper tyre dimen-
sions as soon as possible.
•
If the size of the spare steel rim wheel is different to that of the other
wheels, it is unlikely that snow chains suitable for the other wheels will fit it.
WARNING
•
After mounting the spare steel rim wheel, the tyre pressure must be
checked and corrected as soon as possible. The inflating pressure must
adapt to the vehicle load (consult th e table containing the inflation pres-
sures). Otherwise there is danger of causing an accident. Use the highest
tyre pressure as indicated in the table.
•
Do not drive faster than 80 km/h, as higher speeds can cause an acci-
dent.
•
Avoid heavy acceleration, hard braking and fast cornering, as this could
cause an accident.
Changing a wheelPreparation work
What you must do before changing a wheel.– If you have a flat tyre or puncture, park the car as far away from the flow of traffic as possible. Choose a location that is as level
as possible.
– All passengers should leave the vehicle. They should wait in a
safe place (e.g. behind the roadside crash barrier).
–Apply the handbrake firmly.
– Engage 1st gear.
– When towing a trailer: Unhitch the trailer from your vehicle.
–Take the tools and the spare wheel ⇒ page 236 out of the
luggage compartment.
WARNING
If you have a puncture in heavy traffic, switch on the hazard warning lights
and place the warning triangle in a visible location. This is for your own
safety and also warns other road users.
Caution
If you have to change the tyre on a gradient, block the wheel opposite the
wheel being changed by placing a stone or similar object under it to prevent
the vehicle from rolling away.
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If and when
242Removing and fitting the wheel
For removal and fitting the wheel, the following tasks must be
completed.After loosening the wheel bolts and raising the vehicle with the jack,
cange the wheel as described below:
Removing a wheel
– Unscrew the bolts using the hexagonal tool in the handle of the
screwdriver (vehicle tool) and place them on a clean surface
⇒ fig. 181.
Fitting a wheel
– Screw in the wheel bolts and tighten them lightly using the hexagonal socket in the screwdriver handle.
The wheel bolts should be clean and easily screwed. Before fitting the spare
wheel, inspect the wheel condition and hub mounting surfaces. These
surfaces must be clean before fitting the wheel.
The hexagonal socket in the screwdriver handle makes it easier to turn the
wheel bolts. The reversible screwdriver blade should be removed when the
tool is used for this purpose.
If tyres with a specific di rection of rotation are fitt ed, note the direction of
rotation.
Note
Do not use the hexagonal socket in the screwdriver handle to loosen or
tighten the wheel bolts.Anti-theft wheel bolts
A special adapter is required to turn the anti-theft wheel
bolts.
Fig. 181 Changing the
wheel: Hexagonal socket
in screwdriver handle to
turn the wheel bolts
Fig. 182 Anti-theft wheel
bolt
Exeo_EN.book Seite 242 Freitag, 17. Oktober 2008 11:24 11
If and when245
Safety First
Operating instructions
Practical tips
Te c h n i c a l D a t a
Repairing a tyrePreparations
– If you have a flat tyre or puncture, park the car as far away from
the flow of traffic as possible.
–Apply the handbrake firmly to prevent the vehicle from moving
accidentally on slopes.
–Engage 1st gear.
– Check whether a repair is possible using the Tyre Mobility System ⇒page 243.
– Ensure that all passengers leave the vehicle and move away from
the danger area ⇒.
– Take the tyre sealant can and the compressor out of the luggage
compartment. – Stick the “max. 80 km/h” adhesive, which is included with the
tyre sealant can, onto the instru ment panel where the driver will
see it.
Filling the tyre
– Shake the tyre sealant can well.
– Screw the enclosed filling hose onto the sealant can as far as it will go. This will automatically pierce the foil sealing the can.
– Take the valve cap off the tyre valve and use the enclosed valve insert tool to unscrew the valve insert ⇒fig. 184.
– Place the valve insert onto a clean surface.
– Remove the sealing plug from the filling hose and insert the hose into the tyre valve.
– Hold the tyre sealant can upside down and fill the complete contents of the can into the tyre.
– Then disconnect the hose and screw the valve insert firmly back into the tyre valve.
Inflating the tyre
– Screw the compressor filling hose onto the tyre valve and plug the connector into the cigarette lighter.
– Pump the tyre up to 2.0 to 2.5 bar and monitor the pressure shown on the pressure gauge.
Fig. 184 Repairing a tyre
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If and when
246
– If the tyre pressure remains lower than the value specified above drive the vehicle approx. 10 metres forwards or backwards, so
that the sealant can spread evenly in the tyre. If the pressure is
still lower than the specification the tyre is too badly damaged
and cannot be repaired using the tyre sealant.
Final check
– After about 10 minutes, stop to check the tyre pressure.
– If tyre pressure is less than 1.3 bar, the tyre is too badly damaged. Do not drive on! You should obtain professional
assistance.
WARNING
•
If you have a puncture in heavy traffic, switch on the hazard warning
lights and place the warning triangle in a visible location. This is for your
own safety and also warns other road users.
•
Make sure your passengers wait in a safe place (for instance behind the
roadside crash barrier).
•
Please observe the manufacturers' safety notes on the compressor and
the instructions supplied with the tyre sealant can.
•
If it was not possible to build up a tyre pressure of 2.0 bar within 6
minutes this means that the tyre is too badly damaged. Do not drive on!
•
Seek professional assistance if the repair of a tyre puncture is not
possible with the sealing compound.
•
If tyre pressure is less than 1.3 bar after driving about 10 minutes, the
tyre is too badly damaged. Do not drive on! Obtain technical assistance.Caution
Take special care if you have to repair a tyre on a slope.
Note
•
Do not use the compressor for longer than 6 minutes. Otherwise, it might
overheat. When the compressor has cooled down, you can use it again.
•
If tyre sealant should leak out, leave it to dry and then pull it off like foil.
•
After carrying out a tyre repair remember to buy a new tyre sealant can at
a qualified workshop. This will ensure that the Tyre Mobility System is opera-
tive again.
•
Please observe legal requirements when doing so.
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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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