wheel MERCEDES-BENZ B-CLASS HATCHBACK 2014 Service Manual

X
Adjust the seat (Y page 110).
X Adjust the exterior mirror on the driver's
side (Y page 115).
X Briefly press the Mmemory button and
then press preset position button 1,2or 3
within three seconds.
The settings are stored in the selected pre- set position. A tone sounds when the set-
tings have been completed. Calling up a stored setting
X Press and hold the relevant preset position
button 1,2or 3until the seat and exterior
mirrors are in the stored position.
i The setting procedure is interrupted as
soon as you release the storage position
button. Memory function
119Seats, steeringwheel and mirrors Z

Vehicles with halogen headlamps
:
Dipped-beam headlamp: H7 55 W
; Main-beam headlamp: H7 55 W
= Turn signal lamp: PY 21 W Tail lamps (vehicles with halogen headlamps)
: Rear foglamp: P 21 W
; Reversing lamp: W 16 W
= Turn signal lamp: PY 21 W Licence plate lamp (vehicles with halogen head-
lamps)
: Licence plate lamp: C 5 W Replacing the front bulbs
Fitting/removing the cover on the front wheel arch You must remove the cover of the front wheel
housing before you can change the front turn signal lamp.
X To remove: switch off the lights.
X Turn the front wheels inwards.
X Turn rotary knob :through 90°.
Cover ;is released.
X Push cover ;down.
X Turn rotary knob :through 90°.
Cover ;is locked.
Dipped-beam headlamps (halogen
lamps) X
Remove the cover in the front wheel arch
(Y page 129).
X Turn housing cover :anti-clockwise and
remove it.
X Turn bulb holder ;anticlockwise and pull
out. Replacing bulbs
129Lights and windscreen wipers Z

X
Take the bulb out of bulb holder ;.
X Insert the new bulb into bulb holder ;.
X Insert bulb holder ;and turn it clockwise.
X Press on housing cover :and turn it to the
right.
X Replace the cover in the front wheel arch
(Y page 129).
Main-beam headlamps (halogen head-
lamps) X
Switch off the lights.
X Open the bonnet.
X Turn housing cover :anticlockwise and
remove it.
X Turn bulb ;anticlockwise and pull out.
X Insert the new bulb and engage it to the
stop.
X Press on housing cover :and turn it to the
right. Turn signal lamp (halogen headlamps)
X
Remove the cover in the front wheel arch
(Y page 129).
X Turn handle extension ;anti-clockwise
and pull it out of holder :.
X Press the bulb lightly, turn it anti-clockwise
and pull it out.
X Insert the new bulb into bulb holder :.
X Insert handle extension ;into holder :
and turn it clockwise until it engages. 130
Replacing bulbsLights and windscreen wipers

Switching on/off
X
Turn the key to position 0in the ignition
lock or remove it (Y page 159).
X To activate: press theÃŒbutton.
The indicator lamp in the ÃŒbutton lights
up.
X To deactivate: press theÃŒbutton.
The indicator lamp in the ÃŒbutton goes
out.
i Residual heat is deactivated automati-
cally:
R after approximately 30 minutes
R when the ignition is switched on
R if the battery voltage drops
R when the auxiliary heating is switched on Auxiliary heating
Important safety notes G
DANGER
If the exhaust pipe is blocked or sufficient
ventilation is not possible, toxic exhaust
fumes can enter the vehicle, especially car-
bon monoxide. This is the case, e.g. in
enclosed spaces, or if the vehicle is stuck in
snow. There is a risk of fatal injuries.
You should switch off the auxiliary heating in
enclosed spaces which do not have an extrac- tion system, e.g. a garage. If the vehicle is
stuck in snow and you must leave the auxiliary
heating running, keep the exhaust pipe and
the area around the vehicle clear of snow. To guarantee a sufficient supply of fresh air, open
a window on the side of the vehicle away from the wind. G
WARNING
When the auxiliary heating is switched on,
parts of the vehicle can become very hot. Flammable materials such as leaves, grass or
twigs may ignite if they come into contact
with:
R hot parts of the exhaust system
R the exhaust gas itself
There is a risk of fire.
When the auxiliary heating is switched on,
make sure that:
R no flammable materials come into contact
with hot vehicle components
R the exhaust gas can escape from the
exhaust pipe unhindered
R the exhaust gas does not come into contact
with flammable materials.
The auxiliary heating and the exhaust gas out-
let are situated in front of the right-hand front
wheel.
! Operating the auxiliary heating/ventila-
tion draws on the vehicle battery. After you
have heated or ventilated the vehicle a
maximum of two times, drive for a longer
distance.
Switch the auxiliary heating on regularly once
a month for about ten minutes.
The auxiliary heating heats the air in the vehi- cle interior to the set temperature. This
occurs without using the heat of the running
engine. The auxiliary heating is operated
directly using the vehicle's fuel. For this rea-
son, the fuel tank must be at least Õfull to
ensure that the auxiliary heating functions.
The auxiliary heating/ventilation automati-
cally adjusts to changes in temperature and
weather conditions. For this reason, the aux-
iliary heating could switch from ventilation
mode to heating mode or from heating mode to ventilation mode.
The auxiliary heating switches off when the
engine is switched off. The auxiliary ventila-
tion switches off when you turn the key to key
position 2(Y page 159).
The auxiliary heating switches off automati-
cally after 30 minutes. 150
Operating the climate control systemClimate control

i
Optimal climate control function is ach-
ieved by opening the air vents fully and set- ting the adjusters to the middle position. Adjusting the centre air vents
X
To open the centre air vent: turn the
adjuster in one of centre air vents :to the
left.
X To close the centre air vent: turn the
adjuster in one of centre air vents :clock-
wise as far as it will go. Adjusting the side air vents
:
Side window demister vent
; Side air vent
X To open a side air vent: turn the adjuster
in side air vent ;to the left.
X To close a side air vent: turn the adjuster
in side air vent ;clockwise as far as it will
go. Setting the rear-compartment air
vents
:
Rear-compartment air vent, left
; Rear-compartment air vent, right
= Rear-compartment air vent thumbwheel
X To open/close: turn thumbwheel =up or
down.
i If the control panel in the front is switched
off, no air can flow through the rear air
vents. 156
Air ventsClimate control

boosting effect. You will require considerably
more effort to steer and brake. There is a riskof an accident.
Do not switch off the ignition while driving. G
WARNING
If the parking brake has not been fully
released when driving, the parking brake can:
R overheat and cause a fire
R lose its hold function.
There is a risk of fire and an accident. Release
the parking brake fully before driving off.
! Do not warm up the engine when the vehi-
cle is stationary. Drive off immediately.
Avoid high engine speeds and driving at full throttle until the engine has reached its
operating temperature.
Only shift the automatic transmission to
the desired drive position when the vehicle is stationary.
Where possible, avoid spinning the drive
wheels when pulling away on slippery
roads. You could otherwise damage the
drive train. Key positions
Key g
To remove the key
1 Power supply for some consumers, such
as the windscreen wipers 2
Ignition (power supply for all consumers)
and drive position
3 To start the vehicle
Vehicles with manual transmission: the
steering is locked when the key is taken out of the ignition lock.
i If the key does not belong to the vehicle, it
can still be turned in the ignition lock. How- ever, the ignition will not be switched on.
The engine cannot be started.
Start/Stop button General notes
Vehicles with KEYLESS-GO are equipped with
keys featuring an integrated KEYLESS-GO
function and a detachable Start/Stop button.
A check which periodically establishes a radio connection between the vehicle and the key
determines whether a valid key is in the vehi-
cle. This occurs, for example, when starting
the engine.
When you insert the Start/Stop button into
the ignition lock, the system needs approx-
imately two seconds recognition time. You
can then use the Start/Stop button.
Pressing the Start/Stop button several times
in succession corresponds to the different
key positions in the ignition lock. Pre-requi-
site for this is that:
R you do not depress the brake pedal (vehi-
cles with automatic transmission)
R you do not depress the clutch pedal (vehi-
cles with manual transmission)
If you depress the brake pedal and press the
Start/Stop button, the engine starts immedi- ately (vehicles with automatic transmission).
If you depress the clutch pedal and press theStart/Stop button, the engine starts immedi-
ately (vehicles with manual transmission). Driving
159Driving and parking Z

When the transmission is in position
N, you
can also start the engine with the brake pedal
depressed.
Starting procedure with the key To start the engine using the key instead of
the Start/Stop button, pull the Start/Stop
button out of the ignition lock.
X To start a petrol engine: turn the key to
position 3in the ignition lock (Y page 159)
and release it as soon as the engine is run-
ning.
X To start a diesel engine: turn the key to
position 2in the ignition lock (Y page 159).
The % preglow indicator lamp in the
instrument cluster lights up.
X When the %preglow indicator lamp
goes out, turn the key to position 3
(Y page 159) and release it as soon as the
engine is running.
You can start the engine without preglow if
the engine is warm.
Starting procedure using the Start/
Stop button The Start/Stop button can be used to start
the vehicle manually without inserting the key into the ignition lock. The key must be in the
vehicle and the Start/Stop button must be
inserted in the ignition lock. This mode for
starting the engine operates independently of
the ECO start/stop automatic engine start
function.
You can start the engine if a valid key is in the vehicle. Switch off the engine and always take
the key with you when leaving the vehicle,
even if you only leave it for a short time. Pay
attention to the important safety notes.
X Vehicles with automatic transmission:
depress the brake pedal and keep it
depressed.
X Vehicles with manual transmission:
depress the clutch pedal and keep it
depressed. X
To start a petrol engine: press the Start/
Stop button once (Y page 159).
The engine starts.
X To start a diesel engine: press the Start/
Stop button once (Y page 159).
Preglow is activated and the engine starts. Pulling away
Manual transmission !
Change gear in good time and avoid spin-
ning the wheels. Otherwise, you could dam- age the vehicle.
Depress the accelerator carefully when pull-
ing away.
The vehicle locks centrally once you have
pulled away. The locking knobs in the doors
drop down.
You can open the doors from the inside at any time.
You can also deactivate the automatic lockingfeature (Y page 247).
Automatic transmission G
WARNING
If the engine speed is above the idling speed
and you engage transmission position Dor R,
the vehicle could pull away suddenly. There is a risk of an accident.
When engaging transmission position Dor R,
always firmly depress the brake pedal and do not simultaneously accelerate.
Depress the accelerator carefully when pull-
ing away.
The vehicle locks centrally once you have
pulled away. The locking knobs in the doors
drop down.
You can open the doors from the inside at any
time.
You can also deactivate the automatic locking feature (Y page 247). 162
DrivingDriving and parking

A Neutral
Do not shift the transmission to
N
while driving. Otherwise, the auto-
matic transmission could be dam-
aged.
No power is transmitted from the
engine to the drive wheels.
Releasing the brakes will allow you
to move the vehicle freely, e.g. to
push it or tow it.
If ESP ®
is deactivated or faulty:
shift the transmission to position N
if the vehicle is in danger of skid-
ding, e.g. on icy roads.
If you switch the engine off with the transmission in position Ror D, the
automatic transmission shifts to N
automatically.
! Rolling in neutral
Ncan lead to
damage to the transmission. 7 Drive
The automatic transmission
changes gear automatically. All
forward gears are available.
Driving tips
Changing gear The automatic transmission shifts to the indi-
vidual gears automatically when it is in trans-
mission position D. Gearshifting is deter-
mined by:
R the selected drive program (Y page 174)
R the position of the accelerator pedal
(Y page 173)
R the road speed
Accelerator pedal position Your style of driving influences how the auto-
matic transmission shifts gear:
R little throttle: early upshifts
R more throttle: late upshifts Holding the vehicle stationary on uphill
gradients G
WARNING
If the clutch overheats, the electronic man-
agement system is automatically deactivated. This interrupts the power transmission. The
vehicle may, for example, roll backwards on
gradients. There is a risk of an accident.
Never hold the vehicle stationary on uphill
gradients by depressing the accelerator.
The clutch may overheat if you hold the vehi- cle stationary on uphill gradients by depress- ing the accelerator pedal. If the clutch over-
heats, a warning tone sounds.
The Stop vehicle Shift to P Leave Stop vehicle Shift to P Leave
engine
engine running
running display message appears in
the multifunction display. You will only be
able to continue your journey once the clutch
has cooled down and the display message in
the multifunction display has disappeared.
Never hold the vehicle stationary on uphill
gradients by depressing the accelerator.
Instead, only ever hold the vehicle stationary
on uphill gradients by:
R depressing the brake pedal
R activating the HOLD function
R engaging the electric parking brake
Kickdown Use kickdown for maximum acceleration:
X Depress the accelerator pedal beyond the
pressure point.
The transmission shifts to a lower gear
depending on the engine speed.
X Ease off the accelerator pedal once the
desired speed is reached.
The automatic transmission shifts back up.
For further information on kickdown in man-
ual drive program M(Y page 175). Automatic transmission
173Driving and parking Z

Towing a trailer
Towing a trailer is not possible with all mod-
els. For further information, see
(Y
page 225).
X Drive in the middle of the engine speed
range on uphill gradients.
X Depending on the uphill or downhill gradi-
ent, select a lower gear (Y page 186), even
if cruise control, DISTRONIC PLUS, or
SPEEDTRONIC are activated. Program selector button
The program selector button allows you to
choose between drive programs with differ-
ent driving characteristics. X
Press program selector button :.
The selected drive program appears in the
multifunction display.
The automatic transmission switches to auto- matic drive program Eeach time the engine is
started. E
Economy Comfortable, economical
driving
S
Sport Sporty driving style
M
Manual Manual gearshifting
Further information on the automatic drive
program (Y page 174). Steering wheel gearshift paddles
:
Left steering wheel gearshift paddle
(shifts down)
; Right steering wheel gearshift paddle
(shifts up)
In drive program M, you can change gear
yourself using the steering wheel gearshift
paddles.
If you pull the left or right steering wheel gear- shift paddle when in automatic drive program
E or S, the automatic transmission shifts into
drive program Mfor a limited time. Depend-
ing on which gearshift paddle is pulled, the
automatic transmission immediately shifts
into the next gear down or up.
You can only change gear with the steering
wheel gearshift paddles when the transmis-
sion is in position D.
For further information on the manual drive
program, see (Y page 175). Automatic drive program
Drive program Eis characterised by the fol-
lowing:
R comfort-oriented engine settings.
R optimal fuel consumption resulting from
the automatic transmission shifting up
sooner.
R the vehicle pulling away more gently in
forward and reverse gears unless the accel- erator pedal is depressed fully. 174
Automatic transmissionDriving an
d parking

R
increased sensitivity. This improves driving
stability on slippery road surfaces, for
example.
R the automatic transmission shifting up
sooner. This results in the vehicle being
driven at lower engine speeds and the
wheels being less likely to spin.
Drive program Sis characterised by the fol-
lowing:
R sporty engine settings.
R the automatic transmission shifting up
later.
R as a result of the later automatic transmis-
sion shift points, the fuel consumption pos-sibly being higher. Manual drive program
General notes In manual drive program
M, you can change
gear yourself by using the steering wheel
gearshift paddles. For this, the transmission
must be in position D. The gear currently
selected and engaged is shown in the multi-
function display.
Manual drive program Mdiffers from drive
programs Eand Swith regard to spontaneity,
responsiveness and smoothness of gear
changes. Gear Driving situations
=
To use the engine's braking effect
5
To use the braking effect of the
engine on downhill gradients and
for driving:
R on steep mountain roads
R in mountainous terrain
R in arduous conditions 4
To use the braking effect of the
engine on extremely steep downhill
gradients and on long downhill
stretches Activating the manual drive program
Activating permanently
X Press the program selector button
(Y page 174) repeatedly until Mappears in
the multifunction display.
Manual drive program Mremains active
until drive program Eor Sis engaged.
Activating temporarily X Pull the right or left steering wheel gearshift
paddle (Y page 174).
Manual drive program Mis temporarily
active. Depending on which gearshift pad-
dle is pulled, the automatic transmission
immediately shifts into the next gear down
or up.
When manual drive program Mis activated via
the steering wheel gearshift paddles, the tem- porarily active manual drive program Mwill be
deactivated automatically after a limited
time, if the driving situation permits. In this
case, the automatic transmission shifts into
the automatic drive program that was last
engaged, i.e. Eor S. When driving on downhill
gradients, the temporarily active manual
drive program Mwill only be deactivated if the
accelerator pedal is depressed while the vehi-
cle is rolling downhill.
Upshifting X
Pull the right-hand steering wheel gearshift
paddle (Y page 174).
The automatic transmission shifts up to the next gear.
In order to prevent engine damage the auto-
matic transmission automatically shifts up:
R if the maximum engine speed on the cur-
rently engaged gear is reached and
R you depress the accelerator pedal Automatic transmission
175Driving and parking Z