•
Park your vehicle at the roadside so
that you do not obstruct the flow of
traffic and so that you are able to use
the kit without being in danger.
• Apply the parking brake, even if you
have parked on a level road, to make
sure that the vehicle will not move.
• Do not attempt to remove foreign
objects like nails or screws penetrating
the tyre.
• Leave the engine running while the kit
is in use, but not if the vehicle is in an
enclosed or poorly ventilated area (for
example, inside a building). In these
circumstances, switch the
compressor on with the engine turned
off.
• Replace the sealant bottle with a new
one before the expiry date (see top
of bottle) is reached.
• Inform all other users of the vehicle
that the tyre has been temporarily
sealed with the tyre repair kit and
make them aware of the special
driving conditions to be observed.
Inflating the tyre WARNINGS
Check the sidewall of the tyre prior
to inflation. If there are any cracks,
bumps or similar damage, do not
attempt to inflate the tyre. Do not stand directly beside the tyre
while the compressor is pumping.
Watch the sidewall of the tyre. If any
cracks, bumps or similar damage
appear, turn off the compressor and
let the air out by means of the pressure
relief valve B. Do not continue driving with
this tyre. WARNINGS
The sealant contains natural rubber
latex. Avoid contact with skin and
clothing. If this happens, rinse the
affected areas immediately with plenty of
water and contact your doctor. If the tyre inflation pressure does not
reach 1.8 bar (26 psi) within seven
minutes, the tyre may have suffered
excessive damage, making a temporary
repair impossible. In this case, do not
continue driving with this tyre. CAUTION
Screwing the bottle onto the bottle
holder will pierce the seal of the
bottle. Do not unscrew the bottle
from the holder as the sealant will escape. 162
Wheels and tyres
Protective cap
A
Pressure relief valve
B
Hose
C
Orange cap
D
Bottle holder
E
Pressure gauge
F
Power plug with cable
G
Compressor switch
H
Label
I Bottle lid
J
Sealant bottle
K
1. Open the lid of the tyre repair kit.
2. Peel off the label Ishowing the
maximum permissible speed of
80 km/h (50 mph) from the casing
and attach it to the instrument panel
in the driver’s field of view. Make sure
the label does not obscure anything
important.
3. Take the hose Cand the power plug
with cable Gout of the kit.
4. Unscrew the orange cap Dand the
bottle lid J.
5. Screw the sealant bottle Kclockwise
into the bottle holder Efully tight.
6. Remove the valve cap from the damaged tyre.
7. Detach the protective cap Afrom the
hose Cand screw the hose Cfirmly
onto the valve of the damaged tyre.
8. Make sure that the compressor switch
His in position 0.
9. Insert the power plug Ginto the cigar
lighter socket or auxiliary power
socket. See Cigar lighter (page 97).
See Auxiliary power sockets
(page 97).
10. Start the engine.
11. Move the compressor switch Hto
position 1.
12. Inflate the tyre for no longer than seven minutes to an inflation
pressure of minimum 1.8 bar (26 psi)
and a maximum of 3.5 bar (51 psi).
Move the compressor switch Hto
position 0and check the current tyre
pressure with pressure gauge F.
13. Remove the power plug Gfrom the
cigar lighter socket or auxiliary power
socket.
163
Wheels and tyresE94973BJIFECKAGHD
14.
Quickly unscrew the hose Cfrom
the tyre valve and replace the
protective cap A. Fasten the valve
cap again.
15. Leave the sealant bottle Kin the
bottle holder E.
16. Make sure the kit, the bottle lid and the orange cap are stored safely, but
still easily accessible in the vehicle.
The kit will be required again when
you check the tyre pressure.
17. Immediately drive approximately three kilometres (two miles) so that
the sealant can seal the damaged
area.
Note:When pumping in the sealant
through the tyre valve, the pressure may rise up to 6 bar (87 psi) but will drop againafter about 30 seconds. WARNING
If you experience heavy vibrations,
unsteady steering behaviour or
noises while driving, reduce your
speed and drive with caution to a place
where it is safe for you to stop the vehicle.
Recheck the tyre and its pressure. If the
tyre pressure is less than 1.3 bar (19 psi)
or if there are any cracks, bumps or similar
damage visible, do not continue driving
with this tyre. Checking the tyre pressure
1. Stop the vehicle after driving
approximately three kilometres
(two miles). Check, and where
necessary, adjust the pressure of the
damaged tyre.
2. Attach the kit and read the tyre pressure from the pressure gauge F.
3. If the pressure of the sealant-filled tyre
is 1.3 bar (19 psi) or more, adjust it to
the specified pressure. See
Technical specifications (page
168). 4. Follow the inflation procedure once
again to top up the tyre.
5. Check the tyre pressure again from the pressure gauge F. If the tyre
pressure is too high, deflate the tyre
to the specified pressure using the
pressure relief valve B.
6. Once you have inflated the tyre to its correct tyre pressure, move the
compressor switch Hto position 0,
remove the power plug Gfrom the
socket, unscrew the hose C, fasten
the valve cap and replace the
protective cap A.
7. Leave the sealant bottle Kin the bottle
holder Eand store the kit away safely
in its original location.
8. Drive to the nearest tyre specialist to get the damaged tyre replaced.
Before the tyre is removed from the
rim, inform your tyre dealer that the
tyre contains sealant. Renew the kit
as soon as possible after it has been
used once.
Note:
Remember that emergency
roadside tyre repair kits only provide temporary mobility. Regulationsconcerning tyre repair after usage of tyrerepair kit may differ from country tocountry. You should consult a tyrespecialist for advice. WARNING
Before driving, make sure the tyre
is adjusted to the recommended
inflation pressure. See
Technical
specifications (page 168). Monitor the
tyre pressure until the sealed tyre is
replaced. Empty sealant bottles can be disposed
of together with normal household waste.
Return remains of sealant to your dealer
or dispose of it in compliance with local
waste disposal regulations.
164
Wheels and tyres
RUN FLAT TYRES
Principle of operation
Standard tyre
Wheel rim position with correct
tyre pressure
A
Wheel rim position with
insufficient tyre pressure
B
TyreC
Run flat tyre Wheel rim position with correct
tyre pressure
A
Wheel rim position with
insufficient tyre pressure
B
TyreC
Reinforced sidewall
D When a standard tyre experiences a
drastic loss of inflation pressure, the rim
of the wheel brings the full weight of the
vehicle to bear on the collapsed sidewalls.
You can barely manoeuvre the vehicle
and the tyre is destroyed.
Run flat tyres have sturdy, reinforced
sidewalls that support the rim should the
tyre suffer a loss of inflation pressure.
What to do if a run flat tyre has
a puncture
Due to the run-flat properties of these
tyres, you may not notice any tyre defect.
Your vehicle is equipped with a tyre
pressure monitoring system that alerts
you to any drop in tyre pressure. See
Technical specifications
(page 168).
In the event of a tyre defect:
• immediately slow down to a maximum
speed of 80 km/h (50 mph)
• avoid sudden or erratic braking and
steering manoeuvres and be
especially careful negotiating bends
• do not drive more than 80 kilometres
(50 miles) after the defect is detected
• have the defective tyre replaced as
soon as possible.
Replacing run flat tyres WARNINGS
Make sure that the workshop is
aware that your vehicle is equipped
with special run flat tyres.
Never repair or reuse run flat tyres
that are damaged or have been
driven on run flat.
If a run flat tyre has to be replaced, have
the respective wheel rim inspected for
any damage.
165
Wheels and tyresBACE75207 BDCAE87667
Vehicles with stability control
(ESP)
Vehicles with stability control (ESP) may
exhibit some unusual driving
characteristics which can be avoided by
switching the system off. See
Using
stability control (page 113).
TYRE PRESSURE
MONITORING SYSTEM WARNINGS
The system does not relieve you of
your responsibility to regularly check
the tyre pressures.
The system will only provide a low
tyre pressure warning. It will not
inflate the tyres.
Do not drive on significantly
under-inflated tyres. This may cause
the tyres to overheat and fail.
Under-inflation reduces fuel efficiency,
tyre tread life and may also affect your
ability to drive the vehicle safely. CAUTIONS
Do not bend or damage the valves
when you are inflating the tyres.
Have tyres installed by properly
trained technicians.
The Deflation Detection System will alert
you if there is a change of air pressure in
any tyre. It does this by using the ABS
sensors to detect the rolling
circumference of the wheels. When the
circumference changes, this indicates low
pressure in a tyre, a warning message is
displayed in the information display and
the message indicator will illuminate. See
Information messages
(page 73).Apart from a too low tyre pressure or a
damaged tyre, the following situations can
affect the rolling circumference:
•
Vehicle load is uneven.
• When using a trailer or travelling up
and down an incline.
• Using snow chains.
• Driving on soft surfaces such as snow
or mud.
Note:The system will still function
correctly, but there may be an increased detection time.
If a low pressure warning message is
displayed in the information display, check
the tyre pressures as soon as possible
and inflate them to the recommended
pressure. See Technical
specifications (page 168).
If this happens frequently, have the cause
determined and rectified as soon as
possible.
System reset
Note:
Do not reset the system when the
vehicle is moving.
Note:You should reset the system
following any adjustment to the tyre pressures or any changing of tyres.
Note:Turn the ignition on.
Type 2 instrument cluster
1. Using the multifunction lever, navigate
to'SET' > T. Pres.
2. Press and hold the SET/RESET
button until the message Tyre
Pressure set appears.
Type 3 instrument cluster
1. Using the multifunction lever, navigate
tohold 'SET' to set Tyre Pres.
167
Wheels and tyres