brake sensor MERCEDES-BENZ B-CLASS HATCHBACK 2014 Owners Manual

Display message ............................ 281
Important safety note s.................. 318
Opening ......................................... 318
Boot load (maximum) ........................ 393
Brake
EBD .................................................. 79
Brake fluid
Display message ............................ 259
Notes ............................................. 392
Brake force distribution
see EBD (electronic brake force
distribution)
Brake lamps
Adaptive ........................................... 77
Display message ............................ 266
Brakes
ABS .................................................. 73
Adaptive Brake Assist ...................... 76
BAS .................................................. 74
Brake fluid (notes) ......................... 392
Display message ............................ 252
Driving tips .................................... 186
Hill start assist ............................... 163
HOLD function ............................... 201
Important safety notes .................. 186
Parking brake ................................ 182
Warning lamp ................................. 286
Breakdown
see Flat tyre
Brightness control (instrument
cluster lighting) ................................... 30
Buttons on the steering column ...... 233C
Calling up a fault see Display messages
Car wash (care) ................................. 324
Care
Automatic car wash ....................... 324
Carpets .......................................... 330
Display ........................................... 329
Exhaust pipe .................................. 328
Exterior lighting ............................. 327
Gear or selector lever .................... 329
High-pressure cleaner .................... 325
Interior ........................................... 329
Matt paintwork .............................. 326 Note
s............................................. 324
Paint .............................................. 326
Plastic trim .................................... 329
Reversing camera .......................... 328
Roof lining ...................................... 330
Seat belt ........................................ 330
Seat cove r..................................... 330
Sensors ......................................... 328
Steering wheel ............................... 329
Trim pieces .................................... 330
Washing by hand ........................... 325
Wheels ........................................... 326
Windows ........................................ 327
Wiper blades .................................. 327
Wooden trim .................................. 330
CD player/CD changer(on-board
computer) .......................................... 240
Central locking
Automatic locking (on-board com-puter) ............................................. 247
Locking/unlocking (key) .................. 87
Centre console
Lower section .................................. 34
Upper section .................................. 33
Changing bulbs
Dipped-beam headlamp s............... 129
Licence plate lighting ..................... 133
Main-beam headlamp s................... 130
Rear foglamp ................................. 131
Reversing lamps ............................ 131
Turn signals (front) ......................... 130
Turn signals (rear) .......................... 131
Child
Restraint system .............................. 58
Child seat
Forward-facing restraint system ...... 66
Integrated ........................................ 61
Integrated, ICS padded play table .... 62
Integrated, side head restraints ....... 64
ISOFIX .............................................. 59
On the front-passenger seat ............ 64
Rearward-facing restraint system .... 66
Recommendations ........................... 70
Suitable positions ............................ 66
Top Tether ....................................... 59
Child-proof locks
Important safety notes .................... 71
Rear doors ....................................... 72 6
Index

Display message
s.......................... 251
Displaying a service message ........ 323
DISTRONIC PLUS ........................... 198
Factory settings ............................. 249
Heating submenu ........................... 248
Important safety notes .................. 232
Instrument cluster submenu .......... 246
Light submenu ............................... 246
Menu overview .............................. 236
Message memory .......................... 251
Navigation menu ............................ 237
Operating video DVD ..................... 240
Operation ....................................... 233
Service menu ................................. 245
Settings menu ............................... 245
Standard display ............................ 236
Telephone menu ............................ 240
Trip menu ...................................... 236
Vehicle submenu ........................... 247
Opening and closing the side trim
panels ................................................. 131
Operating instructions
Vehicle equipment ........................... 22
Operating safety
Declaration of conformity ................ 23
Important safety note ...................... 22
Operating system
see On-board computer
Outside temperature display ........... 233
Overhead control panel ...................... 36
Override feature
Rear side window s........................... 72 P
Paint code .......................................... 386
Paintwork (cleaning instructions) ... 326
Panic alarm .......................................... 40
Panorama sliding sunroof
Important safety information ......... 102
Operating ....................................... 103
Problem (malfunction) ................... 106
Parking
Important safety notes .................. 181
Parking brake ................................ 182
Position of exterior mirror, front-
passenger side ............................... 117
Reversing camera .......................... 211 see Active Parking Assist
see PARKTRONIC
Parking aid
Active Parking Assist ..................... 206
see Exterior mirrors
see PARKTRONIC
Parking brake
Display message ............................ 255
Electric parking brake .................... 182
Warning lamp ................................. 292
Parking lamps
Display message ............................ 267
Switching on/of f........................... 124
PARKTRONIC
Deactivating/activating ................. 205
Driving system ............................... 203
Function/note s............................. 203
Important safety notes .................. 203
Problem (fault) ............................... 206
Sensor rang e................................. 203
Warning display ............................. 204
PASSENGER AIR BAG
Display message ............................ 264
Indicator lamps ................................ 41
Problems (malfunction) .................. 264
Petrol .................................................. 388
Pets in the vehicle ............................... 73
Plastic trim (cleaning instruc-
tions) .................................................. 329
Power windows
see Side windows
PRE-SAFE ®
(anticipatory occupant
protection)
Operation ......................................... 56
PRE-SAFE ®
(preventive occupant
safety system)
Display message ............................ 260
Program selector button .................. 174
Protection against theft
ATA (Anti-Theft Alarm system )......... 80
Immobiliser ...................................... 80
Interior motion sensor ..................... 82
Tow-away protection ........................ 81
Protection of the environment
General notes .................................. 21
Pulling away
Automatic transmission ................. 162 14
Index

Reversing lamp
Changing bulb s.............................. 131
Reversing lamps
Display message ............................ 267
Roller sunblind
Opening/closing ............................ 105
Panorama sliding sunroof .............. 104
Roof carrier ........................................ 309
Roof lining and carpets (cleaning
instructions) ...................................... 330
Roof load (maximum) ........................ 393S
Safety Children in the vehicle ..................... 57
Safety net
Attaching ....................................... 307
Important safety information ......... 307
Seat
Folding the backrest (rear com-
partment) forwards/back (vehi-
cles with the EASY-VARIO-PLUS
system) .......................................... 303
Folding the backrest (rear com-
partment) forwards/back (vehi-
cles without the EASY-VARIO-
PLUS system) ................................ 303
Seat belt
Centre rear-compartment sea t........ 45
Correct usage .................................. 43
Switching belt adjustment on/off
(on-board computer) ...................... 249
Seat belts
Adjusting the driver's and front-
passenger seat belt ......................... 45
Adjusting the height ......................... 44
Cleaning ......................................... 330
Display message ............................ 260
Fastening ......................................... 44
Important safety guidelines ............. 42
Introduction ..................................... 42
Rear seat belt status indicator ......... 46
Releasing ......................................... 45
Warning lamp ................................. 285
Warning lamp (function) ................... 45
Seats
Adjusting (electrically) ................... 110 Adjusting (manually) ...................... 110
Adjusting the 4-way lumbar sup-
port ................................................ 112
Adjusting the head restraint .......... 110
Cleaning the cover ......................... 330
Correct driver's seat position ........ 108
Important safety notes .................. 109
Seat heating problem .................... 114
Storing settings (memory func-
tion) ............................................... 118
Switching seat heating on/of
f....... 112
Securing luggage ............................... 305
Selector lever
Cleaning ......................................... 329
Sensors (cleaning instructions) ....... 328
Service menu (on-board com-
puter) .................................................. 245
Service message
see ASSYST PLUS
Service products
Brake fluid ..................................... 392
Coolant (engine) ............................ 392
Engine oil ....................................... 390
Fuel ................................................ 386
Important safety notes .................. 386
Washer fluid ................................... 393
Setting the air distribution ............... 145
Setting the airflow ............................ 145
Settings
Factory (on-board computer) ......... 249
On-board compute r....................... 245
Shifting to neutral (manual trans-
mission) ............................................. 169
Side head restraints
Integrated child seat ........................ 64
Side lamps
Switching on/of f........................... 124
Side windows
Convenience closing ........................ 99
Convenience opening ...................... 99
Important safety notes .................... 98
Opening/closing .............................. 98
Problem (malfunction) ................... 102
Resetting ....................................... 100
Reversing feature ............................. 98
Sidebag ................................................ 48 16
Index

Protection of the environment
General notes
H
Environmental note
Daimler's declared policy is one of compre-
hensive environmental protection.
Our objectives are to use the natural resour-
ces which form the basis of our existence on
this planet sparingly and in a manner which
takes the requirements of both nature and
humanity into consideration.
You too can help to protect the environment
by operating your vehicle in an environmen-
tally-responsible manner.
Fuel consumption and the rate of engine,
transmission, brake and tyre wear depend on
the following factors:
R operating conditions of your vehicle
R your personal driving style
You can influence both factors. Therefore,
please bear the following in mind:
Operating conditions:
R avoid short trips, as these increase fuel
consumption.
R observe the correct tyre pressure.
R do not carry any unnecessary weight in the
vehicle.
R remove the roof rack once you no longer
need it.
R a regularly serviced vehicle will contribute
to environmental protection. You should
therefore adhere to the service intervals.
R all maintenance work should be carried out
at a qualified specialist workshop.
Personal driving style:
R do not depress the accelerator pedal when
starting the engine.
R do not warm up the engine when the vehicle
is stationary.
R drive carefully and maintain a safe distance
from the vehicle in front.
R avoid frequent, sudden acceleration and
braking. R
change gear in good time and use each gear
only up to Ôof its maximum engine speed.
R switch off the engine in stationary traffic.
R monitor the vehicle's fuel consumption. Returning an end-of-life vehicle
EU countries only:
Mercedes-Benz will take back your old vehicle to dispose of it in an environmentally-respon-sible manner in accordance with the Euro-
pean Union (EU) End of Life Vehicles Direc-
tive.
There is a network of return points and dis-
assembly plants available. You can return
your vehicle to these plants free of charge.
This makes a valuable contribution to the
recycling process and the conservation of
resources.
For further information on recycling old vehi- cles, recovery and the terms of the policy,
visit the Mercedes-Benz homepage. Genuine Mercedes-Benz parts
H
Environmental note
Daimler AG also supplies reconditioned
assemblies and parts which are of the same
quality as new parts. For these, the same war-
ranty applies as for new parts.
! Airbags and seat belt tensioners, as well
as control units and sensors for these
restraint systems, may be installed in the
following areas of your vehicle:
R doors
R door pillars
R door sills
R seats
R dashboard
R instrument cluster
R centre console Introduction
21 Z

Drive on carefully. Have ABS checked imme-
diately at a qualified specialist workshop.
If ABS is malfunctioning, other systems,
including driving safety systems, will also
become inoperative. Observe the information on the ABS warning lamp (Y page 287) and
display messages which may be shown in the
instrument cluster (Y page 252).
ABS works from a speed of about 8 km/h,
regardless of road-surface conditions. ABS
works on slippery surfaces, even when you
only brake gently.
Braking X
If ABS intervenes: continue to depress the
brake pedal with force until the braking sit- uation is over.
X To make a full brake application:
depress the brake pedal with full force.
If ABS intervenes when braking, you will feel a
pulsing in the brake pedal.
The pulsating brake pedal can be an indica-
tion of hazardous road conditions; this serves as a reminder to take extra care while driving. BAS (Brake Assist)
General notes BAS operates in emergency braking situa-
tions. If you depress the brake pedal quickly,
BAS automatically boosts the braking force,
thus shortening the stopping distance.
Important safety notes i
Observe the "Important safety notes" sec-
tion (Y page 73). G
WARNING
If BAS is malfunctioning, the braking distance
in an emergency braking situation is
increased. There is a risk of accident. In an emergency braking situation, depress
the brake pedal with full force. ABS prevents
the wheels from locking.
Braking X
Keep the brake pedal depressed firmly until
the emergency braking situation is over.
ABS prevents the wheels from locking.
The brakes will function as usual once you
release the brake pedal. BAS is deactivated. COLLISION PREVENTION ASSIST
PLUS
General notes COLLISION PREVENTION ASSIST PLUS con-
sists of a distance warning function with an
autonomous emergency braking function and
adaptive Brake Assist.
COLLISION PREVENTION ASSIST PLUS can
help you to minimise the risk of a collision
with the vehicle in front or reduce the effects of such a collision.
If COLLISION PREVENTION ASSIST PLUS
detects that there is a risk of a collision, you
will be warned visually and acoustically. If you
do not react to the visual and audible collision warning, autonomous braking can be initiated
in critical situations. If you apply the brake
yourself in a critical situation, the COLLISION PREVENTION ASSIST PLUS adaptive Brake
Assist assists you.
Important safety notes In particular, the detection of obstacles can
be impaired in the case of:
R dirt on the sensors or obscured sensors
R snow or heavy rain
R interference by other radar sources
R strong radar reflections, for example, in
multi-storey car parks
R a narrow vehicle travelling in front, e.g. a
motorcycle 74
Driving safety systemsSafety

R
a vehicle travelling in front on a different
line
R new vehicles or after a service on the COL-
LISION PREVENTION ASSIST PLUS system
Please observe the information in the sec-
tion on running-in the vehicle
(Y page 158).
Following damage to the front end of the vehi-
cle, have the configuration and operation of
the radar sensor checked at a qualified spe-
cialist workshop. This also applies to colli-
sions at slow speeds where there is no visible
damage to the front of the vehicle.
Distance warning function Important safety notes
i Observe the "Important safety notes" sec-
tion for driving safety systems (Y page 73).G
WARNING
The distance warning function does not react:
R to people or animals
R to oncoming vehicles
R to crossing traffic
R when cornering
Thus, the distance warning function cannot
provide a warning in all critical situations.
There is a risk of an accident.
Always pay careful attention to the traffic sit-
uation and be ready to brake. G
WARNING
The distance warning function cannot always
clearly identify objects and complex traffic
situations.
In such cases, the distance warning function
may:
R give an unnecessary warning
R not give a warning
There is a risk of an accident.
Always pay careful attention to the traffic sit-
uation; do not rely on the distance warning
function alone. Function
X To activate/deactivate: activate or deac-
tivate the distance warning function in the
on-board computer (Y page 244).
Vehicles with a black and white multi-
function display: when the distance warning
function is activated, the Äsymbol
appears in the status overview in the multi-
function display.
Vehicles with a colour multifunction dis-
play: when the distance warning function is
deactivated, the æsymbol appears in the
assistance graphics in the multifunction dis-
play.
The distance warning function can help you to
minimise the risk of a collision with the vehi-
cle in front or reduce the effects of such a
collision. If the distance warning function
detects that there is a risk of a collision, you
will be warned visually and acoustically.
The distance warning function issues a warn- ing at speeds:
R of approximately 30 km/h or more, if, over
several seconds, the distance maintained
to the vehicle travelling in front is insuffi-
cient. The ·distance warning lamp
then lights up in the instrument cluster.
R of approximately 7 km/h or more, if you
rapidly approach a vehicle in front. An inter-
mittent warning tone will then sound and
the · distance warning lamp will light
up in the instrument cluster.
X Brake immediately in order to increase the
distance from the vehicle in front.
or
X Take evasive action provided it is safe to do
so.
Due to the nature of the system, particularly
complicated but non-critical driving condi-
tions may also cause the system to display a
warning.
With the help of the radar sensor system, the distance warning function can detect obsta-
cles that are in the path of your vehicle for an
extended period of time. Driving safety systems
75Safety Z

Up to a speed of approximately 70 km/h, the
distance warning function can also react to
stationary obstacles, such as stopped or
parked vehicles.
If you approach an obstacle and the distance
warning function detects a risk of a collision, the system will alert you both visually and
acoustically.
Autonomous braking function If the driver does not react to the distance
warning signal in a critical situation, COLLI-
SION PREVENTION ASSIST PLUS can assist
with the autonomous braking function.
The autonomous braking function:
R gives the driver more time to react to criti-
cal driving situations
R can help the driver to avoid an accident or
R reduces the effects of an accident
Vehicles without DISTRONIC PLUS: the
autonomous braking function is available in
the following speed ranges:
R 7 - 105 km/h for moving objects
R 7 - 50 km/h for stationary objects
Vehicles with DISTRONIC PLUS: the auton-
omous braking function is available in the fol- lowing speed ranges:
R 7 - 200 km/h for moving objects
R 7 - 50 km/h for stationary objects
If the autonomous braking function demands
particularly high braking force, preventative
passenger protection measures (PRE-SAFE ®
)
are activated simultaneously.
Adaptive Brake Assist i
Observe the "Important safety notes" sec-
tion (Y page 73).
Adaptive Brake Assist provides braking assis- tance in hazardous situations at speeds
above 7 km/h. It uses radar sensor technol-
ogy to assess the traffic situation. G
WARNING
Adaptive Brake Assist cannot always clearly
identify objects and complex traffic situa-
tions.
In such cases, Adaptive Brake Assist can:
R intervene unnecessarily
R not intervene
There is a risk of an accident.
Always pay careful attention to the traffic sit- uation and be ready to brake. Terminate the
intervention in a non-critical driving situation. G
WARNING
Adaptive Brake Assist does not react:
R to people or animals
R to oncoming vehicles
R to crossing traffic
R when cornering
As a result, the Adaptive Brake Assist may not intervene in all critical conditions. There is a
risk of an accident.
Always pay careful attention to the traffic sit- uation and be ready to brake.
Due to the nature of the system, particularly
complicated but non-critical driving condi-
tions may also cause Brake Assist to inter-
vene.
If Adaptive Brake Assist is not available due to a malfunction in the radar sensor system, thebrake system remains available with full
brake boosting effect and BAS.
With the help of Adaptive Brake Assist, the
distance warning signal can detect obstacles
that are in the path of your vehicle for an
extended period of time.
If Adaptive Brake Assist detects a risk of col-
lision with the vehicle in front, it calculates
the braking force necessary to avoid a colli-
sion. If you apply the brakes forcefully, Adap-
tive Brake Assist will automatically increase
the braking force to a level suitable for the
traffic conditions. 76
Driving safety systemsSafety

Useful information
i This Owner's Manual describes all mod-
els, series and optional equipment for your
vehicle that were available at the time of
going to press. National variations are pos- sible. Note that your vehicle may not be
equipped with all of the functions descri-
bed. This is also the case for systems and
functions relevant to safety.
i Read the information on qualified special-
ist workshops: (Y page 24). Key
Important safety notes
G
WARNING
If children are left unsupervised in the vehicle, they could:
R open doors, thereby endangering other per-
sons or road users
R get out and be struck by oncoming traffic
R operate vehicle equipment and become
trapped, for example
In addition, the children could also set the
vehicle in motion, for example, if they:
R release the parking brake
R shift the automatic transmission out of park
position P or shift manual transmission into
neutral
R start the engine
There is a risk of an accident and injury.
When leaving the vehicle, always take the key with you and lock the vehicle. Never leave
children and animals unattended in the vehi-
cle. Keep the keys out of the reach of children. G
WARNING
If you attach heavy or large objects to the key, the key could be unintentionally turned in the
ignition lock. This could cause the engine to
be switched off. There is a risk of an accident. Do not attach any heavy or large objects to the
key. Remove any bulky keyrings before insert-
ing the key into the ignition lock.
! Keep the key away from strong magnetic
fields. Otherwise, the remote control func-
tion could be affected.
Strong magnetic fields can occur in the
vicinity of powerful electrical installations.
Do not keep the key:
R with electronic devices, e.g. a mobile
phone or another key
R with metallic objects, e.g. coins or metal
film
R inside metallic objects, e.g. a metal case
Vehicles with KEYLESS-GO start function: do not keep the key in the luggage compart-
ment. Otherwise, the key may not be detec-
ted, e.g. when starting the engine using the
Start/Stop button.
United Kingdom only: G
WARNING
When the double locks are activated, the
doors can no longer be opened from the
inside. People in the vehicle can no longer get out, e.g. in hazardous situations. There is a
risk of injury.
Therefore, do not leave any people unsuper-
vised in the vehicle, particularly children, eld-
erly people or people in need of special assis-
tance. Do not activate the double lock when
people are in the vehicle.
If the vehicle has been locked from the out-
side, the double-lock function is activated as
standard. It is then not possible to open the
doors from inside the vehicle. You can deac-
tivate the double lock function by deactivat-
ing the interior motion sensor (Y page 82).
The doors can then be opened from the inside after the vehicle has been locked from the
outside. You can open the rear doors from
inside the vehicle if they are not secured by
the child-proof locks (Y page 72). The anti-
theft alarm system is triggered if the door is 86
KeyOpening and closing

Problem
Possible causes/consequences and
M
MSolutions You have lost a key. X
Have the key deactivated at a qualified specialist workshop.
X Report the loss immediately to the vehicle insurers.
X If necessary, have the locks changed as well. You have lost the emer-
gency key element. X
Report the loss immediately to the vehicle insurers.
X If necessary, have the locks changed as well. Doors
Important safety notes
G
WARNING
If children are left unsupervised in the vehicle, they could:
R open doors, thereby endangering other per-
sons or road users
R get out and be struck by oncoming traffic
R operate vehicle equipment and become
trapped, for example
In addition, the children could also set the
vehicle in motion, for example, if they:
R release the parking brake
R shift the automatic transmission out of park
position P or shift manual transmission into
neutral
R start the engine
There is a risk of an accident and injury.
When leaving the vehicle, always take the key with you and lock the vehicle. Never leave
children and animals unattended in the vehi-
cle. Keep the keys out of the reach of children.
Stow luggage or loads preferably in the lug-
gage compartment. Observe the loading
guidelines (Y page 298).
United Kingdom only: G
WARNING
When the double locks are activated, the
doors can no longer be opened from the
inside. People in the vehicle can no longer get out, e.g. in hazardous situations. There is a
risk of injury. Therefore, do not leave any people unsuper-
vised in the vehicle, particularly children, eld-
erly people or people in need of special assis-
tance. Do not activate the double lock when
people are in the vehicle.
If the vehicle has been locked with the key,
the double lock function is activated as stand-
ard. It is then not possible to open the doors
from inside the vehicle. You can deactivate
the double lock function by deactivating the
interior motion sensor (Y page 82). The doors
can then be opened from the inside after the vehicle has been locked from the outside. You
can open the rear doors from inside the vehi- cle if they are not secured by the child-proof
locks (Y page 72). The anti-theft alarm system
is triggered if the door is opened from the
inside. Switch off the alarm (Y page 80). Unlocking and opening the doors
from the inside
X
Pull door handle ;.
If the door is locked, locking knob :pops
up. The door is unlocked and opens. Doors
93Opening and closing Z

Useful information
i This Owner's Manual describes all mod-
els, series and optional equipment for your
vehicle that were available at the time of
going to press. National variations are pos- sible. Note that your vehicle may not be
equipped with all of the functions descri-
bed. This is also the case for systems and
functions relevant to safety.
i Read the information on qualified special-
ist workshops: (Y page 24). Running-in notes
Important safety notes
In certain driving and driving safety systems,
the sensors adjust automatically while a cer-
tain distance is being driven after the vehicle has been delivered or after repairs. Full sys-
tem effectiveness is not reached until the end
of this teach-in process.
Brake pads/linings and discs that are either
new or have been replaced only achieve opti- mum braking effect after several hundred kil-
ometres of driving. Compensate for the
reduced braking effect by applying greater
force to the brake pedal. The first 1500 km
If you treat the engine with sufficient care
from the very start, you will be rewarded with excellent performance for the remainder of
the engine's life.
R Drive at varying vehicle speeds and engine
speeds for the first 1500 km.
R Avoid overstraining the vehicle during this
period, e.g. driving at full throttle.
R Change gear in good time, before the rev
counter needle is Ôof the way to the red
area of the rev counter. R
Do not shift down a gear manually in order
to brake.
R Vehicles with automatic transmission:
try to avoid depressing the accelerator
pedal beyond the point of resistance (kick- down).
After 1500 km, you may gradually bring the
vehicle up to full road and engine speeds.
You should also observe these notes on run-
ning-in if the engine or parts of the drive train
on your vehicle have been replaced. Driving
Important safety notes
G
WARNING
Objects in the driver's footwell may restrict
the clearance around the pedals or block a
depressed pedal. This jeopardises the oper-
ating and road safety of the vehicle. There is a risk of an accident.
Stow all objects securely in the vehicle so that
they do not get into the driver's footwell.
Always fit the floormats securely and as pre-
scribed in order to ensure that there is always sufficient room for the pedals. Do not use
loose floormats and do not place several floor-mats on top of one another. G
WARNING
Unsuitable footwear can hinder correct usage of the pedals, e.g.:
R shoes with thick soles
R shoes with high heels
R slippers
There is a risk of an accident.
Wear suitable footwear to ensure correct
usage of the pedals. G
WARNING
If you switch off the ignition while driving,
safety-relevant functions are only available
with limitations, or not at all. This could affect, for example, the power steering and the brake 158
DrivingDriving and parking