2011 MERCEDES-BENZ B-CLASS HATCHBACK tyre pressure

When towing a trailer, always adjust your
speed to the curren
troad and weather con-
ditions. Do not exceed the maximum permis-
sible speed for your vehicle/trailer combina-
tion. G
WARNING
Never depress the brake pedal continuously
while the vehicle is in motion, e.g. never cause
the brakes to rub by applying constant slight
pedal pressure. This causes the brake system
to overheat, increases the braking distance
and can lead to the brakes failing completely. G
WARNING
On no account should you attempt to draw the
vehicle/trailer combination out by increasing
speed. G
WARNING
If you exceed the maximum noseweight when
using a carrier system on the ball coupling:
R the carrier system may be thrown around.
R the ball coupling and the carrier system
may become detached from the vehicle.
As a result, you may injure others or cause an
accident.
Do not exceed the maximum noseweight.
When driving with a loaded carrier system,
always adjust your driving style to the prevail-
ing road, traffic and weather conditions and
drive particularly carefully.
You can use carrier systems, e.g. bicycle
racks or load-bearing implements, on the ball
coupling. The maximum noseweight of 75kg
applies when using carrier systems on the ball
coupling.
General notes !
Use a drawbar noseweight as close as
possible to the maximum permissible nose-
weight. Do not use a noseweight of less
than 50kg, otherwise the trailer may come
loose. Note that the payload and the rear axle load
are reduced by the actual payload.
X When towing a trailer, set the tyre pressure
on the rear axle of the towing vehicle for a
maximum load; see the tyre pressure table
in the fuel filler flap (Y page 295).
You will find installation dimensions and loads
in the "Technical data" section
(Y page 318).
The maximum noseweight of the trailer draw-
bar on the ball coupling is 75 kg. The actual
noseweight may however not be higher than
the value which is given on the trailer tow
hitch or trailer identification plates. The low-
est weight applies.
Please note that when towing a trailer, PARK-
TRONIC (Y page 163) and Blind Spot Assist
(Y page 177) are only available with limita-
tions, or not at all.
i The height of the ball coupling changes
with the load of the vehicle. If necessary,
use a trailer with a height-adjustable draw-
bar.
Driving tips i
Observe the notes on ESP ®
trailer stabi-
lisation (Y page 67).
The maximum permissible speed for vehicle/
trailer combinations depends on the type of
trailer. Before beginning the journey, check
the trailer's documents to see what the max-
imum permitted speed is. Observe the legally
prescribed maximum speed in the relevant
country.
For certain Mercedes-Benz vehicles, the max-
imum permissible rear axle load is increased
when towing a trailer. Refer to the "Technical
data" section to find out whether this applies
to your vehicle. If you utilise any of the added
maximum rear axle load when towing a trailer,
the vehicle/trailer combination may not
exceed a maximum speed of 100 km/h for
reasons concerning the operating permit.
This also applies in countries in which the 182
Towing
atrailerDriving an d parking

Menus and submenus
Menu overview
Function
:
Trip menu (Y
page 193) ;
Navi menu (navigatio
ninstructions) (Y page 194) =
Audio menu (Y
page 195) ?
Tel menu (telephone) (Y
page 196)A
Assist. menu (assistance) (Y
page 198)B
Service menu (Y
page 200)
R calls up display messages (Y page 205)
R tyre pressure loss warning (Y page 297)
R ASSYST PLUS service interval display (Y page 266)C
Settings menu (Y
page 200) The numbe
rofmenus shown depends on the optional equipment in the vehicle.
The Audio ,
Navi and
Tel menus differ slightly in vehicles with Audio 20 and in vehicles with
COMAND Online. The examples given in this Owner's Manual apply to vehicles equipped with
COMAND Online. 192
Menus and submenusOn-board computer and displays

X
Press a.
The curren tselection is displayed.
X Press the abutton to confirm.
X Press :or9 to set Off ,
Standard or
Adaptive .
X Press the abutton to save the setting.
If Lane Keeping Assist is activated
(Y page 180)a nd the ignition is switched on,
the à symbol appears in the multifunction
display. Service menu
In the
Service menu, you have the following
options:
R call up display messages (Y page 205)
R restarting the tyre pressure loss warning
system (Y page 297)
R calls up when a service is due
(Y page 266) Settings menu
Introduction In the
Settings menu, you have the following
options:
R change the instrument cluster settings
R change the light settings
R change the vehicle settings R
change the convenience settings
R restore the factory settings
Instrument cluster Selecting the uni
tofmeasurement for dis-
tance
You can determine whether the multifunction
display shows some messages in miles or kil-
ometres.
X Press the =or; button on the steer-
ing wheel to selec tthe Settings menu.
X Press the :or9 button to select the
Inst. cluster submenu.
X Press the abutton to confirm.
X Press the :or9 button to select the
Display unit Speed-/odometer: func-
tion.
You will see the selected setting: km or
miles .
X Press the abutton to save the setting.
The selected unit of measurement for dis-
tance applies to:
R the digital speedometer in the Trip menu
R the total distance recorder and the trip
meter
R the trip computer
R the current consumption and the range
R the navigation instructions in the Navi menu
R cruise control
R SPEEDTRONIC
R DISTRONIC PLUS
R ASSYST PLUS service interval display
Switching the additional speedometer
on/off
Only vehicles with manual transmission have
this function.
X Press the =or; button on the steer-
ing wheel to select the Settings menu.
X Press the :or9 button to select the
Inst. cluster submenu.200
Menus and submenusOn-board computer and displays

Tyres
Display messages Possible causes/consequences and
M Solutions
Tyre pressure
Check tyres The tyre pressure loss warning system has detected a significant
loss in pressure.
Aw
arning tone also sounds.
G WARNING
Underinflated or overinflated tyres pose the following risks:
R they may burst, especially as the load and vehicle speed
increase.
R they may wear excessively and/or unevenly, whic hmay greatly
impair tyre traction.
R the driving characteristics, as well as steering and braking, may
be greatly impaired.
There is a ris kofaccident.
X Stop the vehicle withou tmaking any sudde nsteering or braking
manoeuvres .Pay attentio nto the traffic conditions as you do
so.
X If there is a flat tyre, inspect the tyres (Y page 276).
X Check the tyre pressures and, if necessary, set to the correct
tyre pressure.
X Restart the tyre pressure loss warning system when the tyre
pressure is correc t(Ypage 297).
For further information on tyre pressure, see (Y page 295).Check tyre pres‐
sures
then restart Run
Flat Indicator The tyre pressure loss warning system generated a display mes-
sage and has not been restarted since.
X
Set the correct tyre pressure in all four tyres.
X Restart the tyre pressure loss warning system (Y page 297).Run Flat Indicator
inoperative The tyre pressure loss warning system is faulty.
X
Visit a qualified specialist workshop. 228
Display messagesOn-board computer and displays

Washing by hand
In some countries, washing by hand is only
allowed at wash bays that are specially
designed for this purpose. Observe the legal
requirements for each individual country.
X Do not use hot water and do not wash the
vehicle in direct sunlight.
X Use a soft sponge to clean.
X Use a mild cleaning agent, such as a car
shampoo approved by Mercedes-Benz.
X Thoroughly hose dow nthe vehicle with a
gentle jet of water.
X Do not point the water jet directly towards
the air inlet.
X Use plenty of water and rinse out the
sponge frequently.
X Rinse the vehicle with clean water and dry
thoroughly with a chamois.
X Do not let the cleaning agent dry on the
paintwork.
When using the vehicle in winter, remove all
traces of road salt deposits carefully and as
soon as possible.
High-pressure cleaning equipment G
WARNING
Do not use high-pressure cleaners with circu-
lar-jet nozzles (dirt grinders) to clean your
vehicle, in particular the tyres. You could oth-
erwise damage the tyres and cause an acci-
dent.
! Always maintain a distance of at least
30 cm between the vehicle and the high-
pressure cleaner nozzle. Information about
the correct distance is available from the
equipment manufacturer.
Move the high-pressure cleaner nozzle
around when cleaning your vehicle.
Do not aim directly at any of the following:
R tyres
R door gaps, roof gaps, joints etc.
R electrical components R
battery
R connectors
R lights
R seals
R trim elements
R ventilation slots
Damaged seals or electrical components
can lead to leaks or failures.
Cleaning the wheels !
Do not use acidic wheel cleaning products
to remove brake dust. This could damage
wheel bolts and brake components.
! Do not park up the vehicle for an extended
period straight after cleaning it, particularly
after having cleaned the wheels with wheel
cleaner. Wheel cleaners could cause
increased corrosion of the brake discs and
brake pads/linings. For this reason, you
should drive for a few minutes after clean-
ing. Braking heats the brake discs and the
brake pads/linings, thus drying them. The
vehicle can then be parked up.
Cleaning the paintwork !
Do not affix:
R stickers
R films
R magnetic plates or similar items
to painted surfaces. You could otherwise
damage the paintwork.
X Remove impurities immediately, where
possible, whilst avoiding rubbing too hard.
X Soak insect remains with insect remover
and rinse off the treated areas afterwards.
X Soak bird droppings with water and rinse
off the treated areas afterwards.
X Remove coolant, brake fluid, tree resin,
oils, fuels and greases by rubbing gently
with a cloth soaked in petroleum ether or
lighter fluid. 268
CareMaintenance and care

Flat tyre
Preparing the vehicle
Your vehicle may be equipped with:
R MOExtended tyres (tyres with run-flat char-
acteristics) (Y page 276)
R a TIREFIT kit
R an emergency spare wheel (only for certain
countries)
You can find information on changing/fitting
wheels in the "Wheel change" section
(Y page 298).
i Vehicle preparation is no tnecessary on
vehicles with MOExtended tyres.
i Vehicles with MOExtended tyres are not
equipped with a TIREFIT kit at the factory.
It is therefore recommended that you addi-
tionally equip your vehicle with a TIREFIT kit
if you fit tyres that do not feature run-flat
characteristics, e.g. winter tyres. A TIREFIT
kit can be obtained from a qualified spe-
cialist workshop.
X Stop the vehicle as far away as possible
from traffic on solid, non-slippery and level
ground.
X Switch on the hazard warning lamps.
X Apply the electric parkin gbrake manually
(Y page 145).
X Bring the front wheels into the straight-
ahead position.
X Vehicles with manual transmission:
engage first or reverse gear.
X Vehicles with automatic transmission:
move the DIRECT SELECT lever to P.
X Switch off the engine.
X Remove the key from the ignition lock.
X All occupants must get out of the vehicle.
Make sure that they are not endangered as
they do so.
X Make sure that no one is near the danger
area whilst a wheel is being changed .Any-
one who is not directly assisting in the wheel change should, for example, stand
behind the barrier.
X Ge tout of the vehicle. Pay attention to traf-
fic conditions when doing so.
X Close the driver's door.
X Place the warning triangle ( Ypage 274) a
suitable distance away. Observe legal
requirements. MOExtended tyres (tyres with run-flat
characteristics)
G
WARNING
When driving in emergency mode, the driving
characteristics deteriorate, e.g. when corner-
ing, accelerating quickly and when braking.
There is a ris kofaccident.
Do not exceed the state dmaximum speed.
Avoid abrupt steering and driving manoeu-
vres, and driving ove robstacles (kerbs, pot-
holes, off-road). This applies in particular to a
laden vehicle.
Stop driving in emergency mode if:
R you hear banging noises.
R the vehicle starts to shake.
R you see smoke and smell rubber.
R ESP ®
is intervening constantly.
R there are tears in the sidewalls of the tyre.
After driving in emergency mode, have the
wheel rims checked at a qualified specialist
workshop with regard to their further use. The
faulty tyre must be replaced.
With MOExtended tyres (tyres with run-flat
characteristics), you can continue to drive
your vehicle even if there is a total loss of
pressure in one or more tyres.
MOExtended tyres may only be used in con-
junction with an activated tyre pressure loss
warning system.
The driving distance possible is 80 km when
the vehicle is partially laden, and 30 km when
the vehicle is fully laden. 276
Flat tyreBreakdown assistance

In addition to the vehicle load, the driving dis-
tance possible depends upon:
R speed
R road condition
R outside temperature
The driving distance possible in run-flat mode
may be reduced by extreme driving condi-
tions/manoeuvres, or it can be increased
through a moderate style of driving.
The maximum permissible distance which
can be driven in run-flat mode is counted from
the moment the tyre pressure loss warning
appears in the multifunction display.
You must not exceed a maximum speed of
80 km/h.
i When replacing one or all tyres, make
sure that you only use tyres marked
MOExtended. Also ensure that they are of
the specified size for the vehicle.
i Vehicles with MOExtended tyres are not
equipped with a TIREFIT kit at the factory.
It is therefore recommended that you addi-
tionally equip yourv ehicle with a TIREFIT kit
if you fit tyres that do not feature run-flat
characteristics, e.g. winter tyres. A TIREFIT
kit is available, for example, from a qualified
specialist workshop. TIREFIT kit
Using the TIREFIT kit TIREFIT is a tyre sealant.
You can use TIREFIT to seal punctures of up
to 4 mm, particularly those in the tyre tread.
You can use TIREFIT at outside temperatures
down to
Ò20 †. G
WARNING
In the following situations, the tyre sealant is
unable to provide sufficien tbreakdown assis-
tance, as it is unable to seal the tyre properly:
R there are cuts or punctures in the tyre
larger than those mentioned above.
R the wheel rim is damaged.
R you have driven at very low tyre pressures
or on a flat tyre.
There is a risk of accident.
Do not drive any further. Contact a qualified
specialist workshop. G
WARNING
The tyre sealant is harmfu land causes irrita-
tion. It must not come into contact with your
skin, eyes or clothing or be swallowed. Do not
inhale TIREFIT fumes. Keep tyre sealant away
from children. There is a risk of injury.
If you come into contact with the tyre sealant,
observe the following:
R Rinse off the tyre sealant from your skin
immediately with water.
R If the tyre sealant comes into contact with
your eyes, immediately rinse them thor-
oughly with clean water.
R If tyre sealant is swallowed, immediately
rinse your mouth ou tthoroughly and drink
plenty of water. Do not induce vomiting,
and seek medical attention immediately.
R Immediately change out of clothing which
has come into contact with tyre sealant.
R If an allergic reaction occurs, seek medical
attention immediately. Flat tyre
277Breakdown assistance Z

X
Do not remove any foreign objects which
have penetrated the tyre, e.g .screws or
nails.
X Remove the tyre sealant bottle, the accom-
panying "max. 80 km/h" sticker and the
tyre inflation compressor from the stowage
well underneath the luggage compartment
floor (Y page 275).
X Affix part :of the sticker within the driv-
er's field of vision.
X Affix part ;of the sticker near the valve
on the wheel with the defective tyre. X
Remove fille rhose Band plug =from the
bottom section of the tyre inflation com-
pressor housing.
X Slide the yellow filler hose connector into
the mounting on yellow cap Aof tyre seal-
ant bottle :until the plug engages.
X With the sealing rings in front, slide yellow
cap Aof tyre sealant bottle :into the
mounting of tyre inflation compressor ;
until the cap and both hooks engage. X
Remove the cap from valve Con the faulty
tyre.
X Screw filler hose Donto valve.
X Insert plug =into the socket of the ciga-
rette lighter (Y page 257) or into a 12 V
power socket in your vehicle (Y page 257).
X Turn the key to position 1(Ypage 127) in
the ignition lock.
X Press on/offs witch?on the tyre inflation
compressor to ON.
The tyre inflatio ncompressor is switched
on. The tyre is inflated.
i First, tyre sealant is pumped into the tyre.
The pressure can briefly rise to approx-
imately 500 kPa (5 bar/73 psi).
Do not switch off the tyre inflation com-
pressor during this phase.
X Let the tyre inflation compressor run for a
maximum of ten minutes. The tyre should
then have attained a pressure of at least
200 kPa (2.0 bar/29 psi).
! Do not operate the tyre inflation com-
pressor for longer than ten minutes at a
time without a break. It may otherwise
overheat.
The tyre inflation compressor can be oper-
ated again once it has cooled down.
If a tyre pressure of 200kPa (2.0bar/29psi)
has not been achieved after a maximum of ten
minutes, see (Y page 279).
If a tyre pressure of 200 kPa (2.0 bar/
29 psi) has not been achieved after a maxi-
mum of ten minutes, see (Y page 279).278
Flat tyreBreakdown assistance