2011 MERCEDES-BENZ B-CLASS HATCHBACK ignition

Vehicles with a trailer tow hitch: if you intend
to use the vehicle for towing, fold out the ball
coupling (Y
page 183) and connect the tow-
bar to it.
Removing the towing eye X
Loosen the towing eye and unscrew it.
X Attach cover :to the bumper and press
until it engages.
X Place the towing eye and the tyre inflation
compressor in the stowage space in the
luggage compartment under the luggage
compartment floor (Y page 274).Towing the vehicle with the front axle
raised
! The ignition must be switched off if you
are towing the vehicle with the front axle
raised. Intervention by ESP ®
could other-
wise damage the brake system.
X Turn the key to position 2in the ignition
lock.
X When the vehicle is stationary, depress the
brake pedal and keep it depressed.
X Vehicles with manual transmission:
shift to neutral.
or
X Vehicles with automatic transmission:
shift the automatic transmission to posi-
tion P.
X Release the brake pedal.
X Release the electric parking brake.
X Deactivate automatic locking
(Y page 203).
X Switch on the hazard warning lamps
(Y page 99).
X Turn the key in the ignition lock to position
0and leave the key in the ignition lock.
When towing yourv ehicle with the frontaxle
raised, it is important tha tyou observe the
safety instructions (Y page 284). Towing the vehicle with both axles on
the ground
G
WARNING
The power assistance for the steering and the
brake force booster do not work when the
engine is not running. You will then need
much more effort to brake and steer the vehi-
cle. Adapt your style of driving accordingly.
i In order to signal a change of direction
when towing with the hazard warning lamps
switched on, use the combination switch as
usual.Int his case, only the turn signals for
the desired direction flash. When the com-
bination switch is reset, the hazard warning
lamps start flashing again.
Vehicles with automatic transmission: the
automatic transmission automatically shifts
to position Pwhen you open the driver's or
front-passenger door or when you remove the
key from the ignition lock. In order to ensure
that the automatic transmission stays in posi-
tion Nwhen towing the vehicle, you must
observe the following points:
X Make sure that the vehicle is stationary.
X Turn the key to position 2in the ignition
lock.
X Depress and hold the brake pedal.
X Shift the automatic transmission to posi-
tion N.
Vehicles with manual transmission:
X Turn the key to position 2in the ignition
lock.
X Depress and hold the brake pedal.
X Engage neutral.
Vehicles with manualo r automatic trans-
mission:
X Leave the key in position 2in the ignition
lock.
X Release the brake pedal.
X Release the electric parking brake.
X Switch on the hazard warning lamps
(Y page 99). 286
Towing and tow-startingBreakdown assistance

It is important that you observe the safety
instructions when towing away yourv ehicle
(Y page 284). Transporting the vehicle
! Only lash the vehicle down by the wheels
or wheel rims, not by parts of the vehicle
such as axle or steering components. Oth-
erwise, the vehicle could be damaged.
X Vehicles with manual transmission:
shift to neutral.
X Vehicles with automatic transmission:
turn the key to position 2in the ignition
lock.
X Shift the transmission to position N.
As soon as the vehicle is loaded:
X Preven tthe vehicle from rolling away by
applying the electric parking brake.
X Vehicles with manual transmission:
shift to first gear or reverse gear.
X Vehicles with automatic transmission:
shift the transmission to position P.
X Turn the key to position 0in the ignition
lock and remove it.
X Secure the vehicle.
The towing eyes or trailer tow hitch can be
used to pull the vehicle onto a trailer or trans-
porter if you wish to transport it. Tow-starting (emergency engine
starting)
! Vehicles with automatic transmission
must not be tow-started. Otherwise, you
could damage the automatic transmission.
Before tow-starting the following conditions
must be fulfilled:
R the battery is connected.
R the engine has cooled down.
R the catalytic converters have cooled down. X
Switch on the hazard warning lamps
(Y page 99).
X Fit the towing eye (Y page 285).
X Secure the rigid towing bar or the towing
rope.
X Depress and hold the brake pedal.
X Turn the key to position 2in the ignition
lock.
X Depress the clutch pedal and keep it
depressed.
X Engage neutral.
X Release the brake pedal.
X Tow-start the vehicle.
X Engage second gear.
X Release the clutch pedal slowly without
depressing the accelerator pedal.
The engine is started.
X Depress the clutch pedal and shift to neu-
tral.
X Stop at a suitable place.
X Secure the vehicle by applying the electric
parking brake.
X Remove the rigid towing bar or towing rope.
X Remove the towing eye (Y page 286).
X Switch off the hazard warning lamps.
When tow-starting, it is important that you
observe the safety instructions (Y page 284)
and the legal requirements in each respective
country. Electrical fuses
Important safety notes
G
WARNING
Only use fuses that have been approved for
Mercedes-Ben zvehicles and which have the
correct fuse rating for the systems con-
cerned. Do not attempt to repair or bridge
faulty fuses. Using fuses which have not been
approved or attempting to repair or bridge
faulty fuses could cause the fuse to be over-
loaded and result in a fire. Have the cause Electrical fuses
287Breakdown assistance
Z

traced and rectified at a qualified specialist
workshop.
! Only use fuses tha thave been approved
for Mercedes-Ben zvehicles and which
have the correct fuse rating for the system
concerned. Only use fuses marked with an
"S". Components or systems could other-
wise be damaged.
The fuses in your vehicle serve to close down
faulty circuits. If afuse blows, all the compo-
nents on the circuit and their functions stop
operating.
Blown fuses must be replace dwith fuses of
the same rating, which you can recognise by
the colour and fuse rating. The fuse ratings
are listed in the fuse allocation chart.
If the newly inserted fuse also blows, have the
cause traced and rectified at a qualified spe-
cialist workshop, e.g. a Mercedes-Benz
Service Centre. Before replacing a fuse
X Park the vehicle and apply the electric park-
ing brake.
X Switch off all electrical consumers.
X Turn the key to position 0in the ignition
lock and remove it (Y page 127). All indi-
cator lamps in the instrumen tcluster must
be off.
The fuses are located in various fuse boxes:
R fuse box in the engine compartmen tonthe
left-hand side of the vehicle, when viewed
in the direction of travel
R fuse box in the front-passenger footwell
The fuse allocation chart is on the fuse box in
the front-passenger footwell (Y page 275).Fuse box in the engine compartment
! Make sure that no moisture can enter the
fuse box when the cover is open. !
When closing the cover, make sure that it
is lying correctly on the fuse box. Moisture
or dirt could otherwise impair the operation
of the fuses. X
Open the bonnet (Y page 262).
X Remove any existing moisture from the
fuse box using a dry cloth.
X To open: open clamps ;.
X Fold cover :upwards in the direction of
the arrow and remove it. X
To close: check whether the seal is lying
correctly in cover :.
X Insert cover :at the back into openings
= on the fuse box.
X Fold down cover :.
X Hook clamps ;into the fuse box and
close.
X Close the bonnet (Y page 263).288
Electrical fusesBreakdown assistance

The tyre pressure warning system does not
warn you of an incorrectly set tyre pressure.
Observe the notes on the recommended tyre
pressure (Y page 295).
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 monitor 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 carefully. Avoid
abrupt steering manoeuvres.
The function of the tyre pressure loss warning
system is limited or delaye dif:
R snow chains are fitted to you rvehicle's
tyres.
R road conditions are wintry.
R you are driving on sand or gravel.
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 respective
operating conditions.
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.
X Observe the notes in the section on tyre
pressures (Y page 295).
X Make sure that the key is in position 2in
the ignition lock.
X Press the =or; button to select the
Service menu.
X Press the 9or: button to select
Tyre pressure .
X Press the abutton.
The Run Flat Indicator active Restart with OK message appears in the
multifunction display.
If you wish to confirm the restart:
X Press the abutton.
The Tyre press. now OK? message
appears in the multifunction display.
X Press the 9or: button to select
Yes .
X Press the abutton.
The Run Flat Indicator restarted message appears in the multifunction dis-
play.
After a teach-in period, the tyre pressure
loss warning system will monitor the set
tyre pressures of all four tyres.
or
If you wish to cancel the restart:
X Press the %button.
or
X If the Tyre press. now OK? message
appears, use the 9or: button to
select Cancel .
X Press the abutton.
The tyre pressure values stored at the last
restart will continue to be monitored. Tyre pressure
297Wheels and tyres Z

Changing
awheel Flat tyre
You can find information on wha tto do in the
event of flat tyre in the "Flat tyre" section
(Y page 276). Instructions for driving with
MOExtended tyres in the event of a flat tyre
are also provided there. Interchanging the wheels
G
WARNING
Interchanging the front and rear wheels may
severely impair the driving characteristics if
the wheels or tyres have different dimensions.
The wheel brakes or suspension components
may also be damaged. There is a risk of acci-
dent.
Interchange front and rear wheels only if the
wheels and tyres are of the same dimensions.
Interchanging the front and rear wheels of
differing dimensions can render the general
operating permit invalid.
Always pay attention to the instructions and
safety warnings in the "Fitting a wheel" sec-
tion (Y page 298).
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.
On vehicles that have the same size front and
rear wheels, you can interchange the wheels
every 5,000km to 10,000 km depending on
the degree of tyre wear. Maintain the direc-
tion 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. Direction of rotation
Tyres with a specified direction of rotation
have additional benefits, e.g. if there is a risk
of aquaplaning. You will only gain these ben-
efits if the correct direction of rotation is
observed.
An arrow on the sidewall of the tyre indicates
its correct direction of rotation. Storing wheels
Store wheels that are not being used in a cool,
dry and preferably dark place. Protec tthe
tyres against oil, grease, petrol and diesel. Cleaning the wheels
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. Fitting
awheel
Preparing the vehicle X
Park the vehicle on firm, non-slippery and
level ground.
X Apply the electric parking brake 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 If a trailer is coupled to the vehicle, uncou-
ple it.
X If included in the vehicle equipment, take
the tyre-change tool kit out of the vehicle. 298
Changing
awheelWheels and tyres