warning MERCEDES-BENZ R-CLASS MPV 2008 Workshop Manual

Tyres and wheels
227G
Risk of accident
Should the tyre pressure drop repeatedly:
R Check the tyre for foreign bodies.
R Check whether the wheel is losing air or
the valve is leaking.
Tyre pressure that is too low has a negative
effect on the vehicle’s active safety, which
could lead to your causing an accident.
Tyre pressure changes by approximately
0.1 bar for every 10 °C change in ambient
temperature.
If you measure the tyre pressure in enclosed
spaces where the temperature differs from
the outside temperature, you will have to cor-
rect the measured value accordingly.
When the vehicle is driven, the tyre tempera-
ture, and with it the tyre pressure, will
increase depending on the road speed and
the load on the tyres.
Therefore, you should only correct tyre pres-
sures when the tyres are cold.
The pressure of warm tyres should only be
corrected if it is too low for the current oper-
ating conditions.
Driving with tyre pressure that is too high or
too low can: R
shorten the service life of the tyres
R increase the likelihood of tyre damage
R have a negative effect on handling charac-
teristics (e.g. by causing aquaplaning)
i The tyre pressure values given for low
loads are minimum values which offer you
good ride comfort characteristics.
You can, however, also use the values given
for higher loads. These are permissible and
will not adversely affect the running of the
vehicle. H
Environmental note
Check the tyre pressure regularly, at least
every 14 days. Tyre pressure loss warning system
G
Risk of accident
The tyre pressure loss warning system does
not warn you of an incorrectly set tyre pres-
sure. The table on the inside of the fuel filler
flap will help you decide whether the tyre
pressures should be corrected.
The tyre pressure loss warning system does
not replace the need to regularly check
your vehicle's tyre pressures, since an even loss of pressure on several tyres at the
same time cannot be detected by the tyre
pressure loss warning system.
The tyre pressure loss warning system is
not able to warn you of a sudden loss of
pressure, e.g. if the tyre is penetrated by a
foreign object.
In the event of a sudden loss of pressure,
bring the vehicle to a halt by braking care-
fully. Do not make any sudden steering
movements when doing so.
While the vehicle is in motion, the tyre pres-
sure loss warning system monitors the set
tyre pressure using the rotational speed of
the wheels. This enables the system to detect
significant pressure loss in a tyre. If the speed
of rotation of a wheel changes as a result of
a loss of pressure, a corresponding warning
message will appear in the multi-function dis-
play.
The function of the tyre pressure loss warning
system is limited or delayed if:
R snow chains are fitted to your vehicle's
tyres
R road conditions are wintry
R you are driving on sand or gravel Operation
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Tyres and wheels
228
R
you adopt a very sporty driving style (cor-
nering at high speeds or driving with high
rates of acceleration)
R you are towing a very heavy or large trailer
R you are driving with a heavy load (in the
vehicle or on the roof)
Restarting the tyre pressure loss warn-
ing system Restart the tyre pressure loss warning system
if you have:
R changed the tyre pressure
R changed the wheels or tyres
R fitted new wheels or tyres
X Before restarting, consult the table of tyre
pressures on the inside of the fuel filler flap
to ensure that the tyre pressure in all four
tyres is set correctly for the operating con-
ditions concerned.
X Also observe the notes in the section on
tyre pressures (Y page 226). G
Risk of accident
The tyre pressure loss warning system can
only give reliable warnings if you have set
the correct tyre pressure. If an incorrect tyre pressure is set, these
incorrect values will be monitored.
A tyre with insufficient pressure results in
vehicle instability when driving, thus
increasing the risk of an accident.
X Make sure that the key is in position
2(Y page 76) in the ignition lock.
The standard display appears in the multi-
function display (Y page 122).
X Press korj to select the tyre pres-
sure function:
Run Flat Indicator active
Menu: R-Buttonæ
X Press the reset button on the left of the
instrument cluster.
The following message appears in the
multi-function display:
Restart Run Flat Indicator?
Yes Cancel
If you wish to confirm the restart:
X Press the æbutton.
The following message appears in the
multi-function display:
Run Flat Indicator restarted
After a teach-in period, the tyre pressure
loss warning system will monitor the set
tyre pressures of all four tyres. If you wish to cancel the restart:
X
Press the çbutton.
or
X Wait until the message
Restart Run Flat Indicator?
Yes Cancel disappears.
The tyre pressure values stored at the last
restart will continue to be monitored. Checking the tyre pressure electroni-
cally*
The tyre pressure monitor only functions if
the correct wheel electronics are fitted to all
wheels. These monitor the pressure in all four
tyres, which you have set when restarting the
tyre pressure monitor. The monitor warns you
when the pressure drops in one or more of
the tyres. G
Risk of accident
The tyre pressure monitor does not warn
you of an incorrectly set tyre pressure. The
table on the inside of the fuel filler flap will
help you decide whether the tyre pressures
should be corrected.
The tyre pressure monitor is not able to
warn you of a sudden loss of pressure, e.g. Operation
* optional
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Tyres and wheels
229if the tyre is penetrated by a foreign object.
In the event of a sudden loss of pressure,
bring the vehicle to a halt by braking care-
fully. Do not make any sudden steering
movements when doing so.
i The operation of the tyre pressure moni-
tor can be affected by interference from
radio transmitting equipment (e.g. radio
headphones, two-way radios) that may be
being operated in or near the vehicle.
i If you are carrying a deflated tyre in the
vehicle, you may only reactivate the tyre
pressure monitor if:
R the deflated tyre is no longer in the vehi-
cle
R you have adjusted the tyre pressure cor-
rectly
Calling up the tyre pressure using the
on-board computer X
Make sure that the key is in posi-
tion 2(Y page 76) in the ignition lock.
X Press the jork button to select the
tyre pressure function. The current tyre pressure for each wheel will
be displayed.
If the vehicle has been parked for longer than
20 minutes or you have not driven faster than
25 km/h since the vehicle was parked, the
following message appears:
Tyre pressure displayed only after
driving for a few minutes
i
The tyre pressure values indicated by the
on-board computer may differ from those
measured at a filling station with a pressure
gauge. The tyres pressures shown by the
on-board computer refer to those meas-
ured at sea level. The tyre pressure values
indicated by a pressure gauge when the
vehicle is at high altitude are higher than
those shown by the on-board computer. In
this case, do not reduce the tyre pressures. Tyre pressure warning If the tyre pressure on one or more wheels
drops significantly, a message appears in the
multi-function display.
The tyre pressure of the affected wheel(s) will
be displayed in a red rectangle. You will also
hear a warning tone.
Restarting the tyre pressure monitor In most cases, the tyre pressure monitor will
automatically detect the new reference val-
ues, e.g. if you have:
R changed the tyre pressure
R changed the wheels or tyres
R fitted new wheels or tyres
If you wish to define the new reference values
manually:
X Use the table on the inside of the fuel filler
flap to ensure that the tyre pressure is set
correctly in all four tyres for the current
operating conditions.
Also observe the notes in the section on
tyre pressures (Y page 226).
X Make sure that the key is in position 2in
the ignition lock.
The standard display appears in the multi-
function display (Y page 122). Operation
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Tyres and wheels
230
X
Press the jork button to select the
Tyre pressure function or wait until the
following message appears:
Tyre pressure displayed only after
driving for a few minutes
X Press the reset button on the left of the
multi-function steering wheel
(Y page 242).
The Restart Tyre pressure monitor
Yes Cancel message appears in the multi-
function display.
X Press the æbutton.
The following message appears in the
multi-function display:
Tyre pressure monitor restarted
The tyre pressure monitor has stored the
pressure of the tyres as a new reference
value.
If you wish to cancel the restart:
X Press the çbutton. Interchanging the wheels
G
Risk of accident
Interchange the front and rear wheels only
if they have the same dimensions: for exam-
ple size, offset, etc.
After every wheel interchange/change,
have the tightening torque checked at a
qualified specialist workshop that has the
necessary specialist knowledge and tools
to carry out the work required. Mercedes-
Benz recommends that you use a
Mercedes-Benz Service Centre for this pur-
pose. In particular, work relevant to safety
or on safety-related systems must be car-
ried out at a qualified specialist workshop.
The wheels could work loose if they are not
tightened to a torque of 150 Nm.
For safety reasons, Mercedes-Benz recom-
mends that you only use wheel bolts of the
correct size which have been approved for
Mercedes-Benz vehicles.
The wear patterns on the front and rear tyres
differ depending on the operating conditions.
Interchange the wheels before a clear wear
pattern has formed on the tyres. Front tyres
typically wear more on the shoulders and the
rear tyres in the centre. Interchange the wheels every 5,000 km to
10,000 km depending on the degree of tyre
wear, provided that the vehicle has the same
size front and rear tyres. Do not reverse the
direction of tyre rotation.
Clean the contact surfaces of the wheel and
the brake disc thoroughly every time a wheel
is interchanged. Check the tyre pressure and,
if necessary, restart the tyre pressure loss
warning system or the tyre pressure moni-
tor*.
! On vehicles fitted with a tyre pressure
monitor*, electronic components are loca-
ted in the wheel.
Tyre fitting tools should not be applied in
the area of the valve, as this could damage
the electronic components.
Always have the wheels interchanged/
changed at a qualified specialist workshop,
e.g. a Mercedes-Benz Service Centre.
i Vehicles with a tyre pressure monitor*
If the positions of the wheels on the vehicle
are changed, the tyre pressure may be tem-
porarily displayed at the wrong position.
This is rectified after a few minutes of driv-
ing, and the tyre pressures are displayed
for the correct positions. Operation
* optional
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Winter driving
231Winter driving
Points to remember
Have your vehicle winterproofed at a qualified
specialist workshop, e.g. at a Mercedes-Benz
Service Centre, at the onset of winter. Winter tyres
In temperatures below +7 °C, always use all-
weather tyres or winter tyres and always use
winter tyres in wintry road conditions.
Only winter tyres displaying the snowflake
symbol in addition to the M+S marking pro-
vide optimum grip in wintry road conditions.
Only these tyres will allow the ABS and ESP
driving systems to function optimally in win-
ter, as these tyres have been designed spe-
cifically for driving on snow.
Use winter tyres of the same make and tread
on all wheels to maintain safe handling char-
acteristics. G
Risk of accident
Winter tyres with a tread depth of less than
4 mm must be replaced immediately. They
are no longer suitable for winter use, can
no longer provide sufficient grip. This could cause you to lose control of your vehicle
and cause an accident.
Always observe the maximum permitted
speed specified for the winter tyres you have
fitted. If you fit winter tyres which have a
lower maximum permitted speed than that of
the vehicle, affix an appropriate warning sign
in the driver's field of vision. This can be
obtained at a qualified specialist workshop,
e.g. from a Mercedes-Benz Service Centre.
Under these circumstances, you should also
restrict the maximum speed of the vehicle
using permanent Speedtronic 28
to the maxi-
mum permissible speed for the winter tyres
(Y page 151).
Once you have fitted the winter tyres:
X Check the tyre pressures (Y page 226).
X Restart the tyre pressure moni-
tor* (Y page 228). G
Risk of accident
If you fit the spare wheel* when driving with
winter tyres, bear in mind that driving sta-
bility will be impaired owing to unstable
cornering characteristics caused by the dif-
ferent tyres. You should therefore adapt
your driving style and drive carefully. Have the spare wheel* replaced at the
nearest qualified specialist workshop
which has the necessary specialist knowl-
edge and tools to carry out the work
required. Mercedes-Benz recommends
that you use a Mercedes-Benz Service
Centre for this purpose. In particular, work
relevant to safety or on safety-related sys-
tems must be carried out at a qualified
specialist workshop. Snow chains
For safety reasons, Mercedes-Benz recom-
mends that you only use snow chains which
have been specially approved for your vehicle
by Mercedes-Benz, or are of a corresponding
standard of quality.
! Information about the use of snow chain-
compatible AMG winter tyres is applicable
for AMG tyres. Use of snow chains is only
permissible with these tyres.
! Vehicles with the AIRMATIC package*: do
not drive in ADS SPORTmode when driving
with snow chains fitted.
If you intend to fit snow chains, please bear
the following points in mind:
28 Only available for certain countries. Operation
* optional
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Care
243Exceeding the service due date
One of the following messages appears in the
multi-function display:
Service A .. days overdue
Service A overdue by .. km
You will also hear a warning tone.
A qualified specialist workshop, e.g. a
Mercedes-Benz Service Centre, will reset the
ASSYST PLUS service interval indicator after
the necessary service work has been carried
out.
i If you fail to have the service performed
by the specified date, you may be violating
applicable laws. Your warranty may be inva-
lidated and goodwill settlements may be
refused. Calling up the service due date
Use the buttons on the multi-function steer-
ing wheel.
X Switch on the ignition.
X Press èorÿ to select the Basic
display menu (Y page 125).
X Press the jork button to select the
service information.
The 9 service symbol and the service
due date are displayed. Care
Notes on care
Regular and proper care maintains the value
of your vehicle.
i It is advisable to use Mercedes-Benz care
products.
Scratches, corrosive deposits, areas affected
by corrosion and damage caused by inade-
quate care cannot always be completely
repaired. In such cases, visit a qualified spe-
cialist workshop immediately, e.g. a
Mercedes-Benz Service Centre.
Repair damage caused by loose chippings
and remove the following substances imme-
diately, whilst avoiding rubbing too hard:
R Soak insect remains with insect remover
and rinse off afterwards.
R Soak bird droppings with water and rinse
off afterwards.
R Remove tree resin, oils, fuels and greases
by rubbing gently with a cloth soaked in
petroleum ether or lighter fluid.
R Use silicone remover to remove wax.
R Use tar remover to remove tar stains. Operation
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Where will I find...?
250 Where will I find...?
Warning triangle
The warning triangle is located in the stowage
space under the luggage compartment floor. 1
Luggage compartment floor
2 Release handle
X Pull release handle 2.
X Fold luggage compartment floor 1
upwards. Vehicles with a TIREFIT kit Example
1
Warning triangle 29
X Remove warning triangle 1.Vehicles with an emergency spare
wheel* Example
1
Warning triangle
X Remove warning triangle 1.
29 Depending on the date of production of the vehicle, the stowage location of the warning triangle may differ from that illustrated. Practical advice
* optional
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Where will I find...?
251
Setting up the warning triangle
1
Retainer
2 Side reflectors
3 Feet
X Fold feet 3down and out to the side.
X Pull side reflectors 2upwards to form a
triangle and lock them at the top using
retainer 1. First-aid kit
i Check the expiry date of the first-aid kit
annually, and replace the contents when
necessary.
The first-aid kit is located underneath the lug-
gage compartment floor. 1
Velcro fastening
2 First-aid kit
X Open the tailgate.
X Open the luggage compartment floor
(Y page 250).
X Release Velcro fastening 1.
X Remove first-aid kit 2. Fire extinguisher*
i Have the fire extinguisher refilled after
each use and checked every two years.
Otherwise, it may fail in an emergency.
Observe the legal requirements in all coun-
tries concerned.
The fire extinguisher is located underneath
the front of the driver's seat. 1
Tab
2 Fire extinguisher
X Pull tab 1upwards.
X Remove fire extinguisher 2. Practical advice
* optional
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Where will I find...?
253
location of the jack and of the other tools
may differ from those illustrated.
Example
1
Tool holder
2 Wheel wrench
3 Electric air pump
4 Instructions on the installation position of
the tool holder
5 Fuse allocation chart
6 Jack, ratchet ring spanner
7 Centring pin
8 Folding wheel chock
9 Towing eye
a Wheel bolts
b Ball coupling of the trailer tow hitch*
c Emergency spare wheel* Removing the emergency spare wheel*
X
Remove the jack from the tool holder
(Y page 252). 1
Retaining screw
2 Emergency spare wheel*
3 Tool holder
X Turn retaining screw 1anticlockwise and
out of tool holder 3and remove it.
i If retaining screw 1does not come out
immediately, turn tool holder 3anticlock-
wise a little.
Retaining screw 1should then unscrew
with ease. X
Turn tool holder 3approximately 180°, so
that the electrical air pump points back-
wards (Y page 252).
X Remove tool holder 3from emergency
spare wheel* 2.
X Remove emergency spare wheel* 2from
the emergency spare wheel well.
Stowing the emergency spare wheel*
X Remove the warning triangle from the
emergency spare wheel well (Y page 250). 1
Guides
In the spare wheel well, there are two guides
1 to keep the emergency spare wheel* in
place. Practical advice
* optional
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Display
messages 255Display messages
Notes
The on-board computer shows warnings or
malfunctions in the multi-function display.
Certain display messages are accompanied
by a warning tone or a continuous tone.
The multi-function display shows high-priority
display messages in red. In the following
tables, these display messages are printed in
red.
Please respond in accordance with the dis-
play messages and follow the additional
notes in this Owner's Manual. G
Risk of accident
If the instrument cluster or the multi-func-
tion display fails, no messages can be dis-
played.
This means that you will not see information
about the driving situation, such as the
speed, outside temperature, warning/indi- cator lamps, display messages or system
failures. The handling characteristics may
be affected. Adapt your driving style and
speed accordingly.
Immediately consult a qualified specialist
workshop which has the necessary special-
ist knowledge and tools to carry out the
work required. Mercedes-Benz recom-
mends that you use a Mercedes-Benz
Service Centre for this purpose. In particu-
lar, work relevant to safety or on safety-
related systems must be carried out at a
qualified specialist workshop.
Before starting a journey, check that the
warning and indicator lamps are operating
correctly. X
Turn the key to position 2in the ignition
lock.
or
X Press the KEYLESS GO button* twice.
All warning and indicator lamps (except for
the turn signal indicator lamps) light up and
the multi-function display is activated.
The following tables contain all the display
messages.
Hiding display messages After a few seconds, the on-board computer
automatically hides some low priority display
messages. Other messages remain visible in
the multi-function display until you hide them
yourself.
Some high priority display messages cannot
be hidden. The multi-function display shows
these messages continuously until the cau-
ses of the messages have been remedied.
Use the buttons on the multi-function steer-
ing wheel.
X
Use the è,·,jork button
to select another display.
The on-board computer saves certain dis-
play messages in the message memory
(Y page 128). Practical advice
* optional
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