2015 MERCEDES-BENZ B-CLASS HATCHBACK radio

Frequencies
Mobile phon e ................................. 280
Two- way radio ................................ 280
Front-passenger front airbag deac-
tivation
Display message ............................ 199
Front-passenger front airbag deac-
tivation system
Operation ........................................ .42
Problems ......................................... 46
System self-test ...............................45
Front-passenger seat
Folding the backrest forward/
back .............................................. .227
Fuses
Allocation chart ............................ .264
Before changing ............................ .263
Fuse box in the engine compart-
ment .............................................. 264
Fuse box in the front-passenger
footwell .......................................... 264
Important safety notes .................. 263 G
Generated electrical energy (Audio 20) ...................................................... 137
Generated electricity (COMAND) ..... 137
Genuine Mercedes-Benz parts ........... 19
Glove compartment .......................... 225H
Hazard warning lamps Display message ............................ 212
Switching on/off ........................... 100
Head restraints
Adjusting ......................................... 89
Adjusting (manually) ........................ 89
Adjusting (rear) ................................ 89
Fitting/removing (rear) .................... 90
Headlamp
Cleaning system (function) ............ 100
Cleaning system (notes) ................ 284
Headlamp flasher .............................. 100
Headlamps
Misting up ...................................... 102
Topping up the cleaning system .... 241 see Automatic headlamp mode
Heating
see Climate control
High voltage
see Safety notes
High voltage battery
Displaying energy consumption
(on-board computer) ...................... 178
Displaying the range (on-board
computer) ...................................... 178
High-pressure cleaners .................... 243
High-voltage battery
Battery care ................................... 136
Charging (charging station) ............ 142
Charging (mains socket) ................ 139
Charging (wallbox) ......................... 142
Charging cable heating up ............. 135
Discharged battery ........................ 136
Display message ............................ 204
Energy consumption ...................... 137
General notes ................................ 135
Method of operation ...................... 136
Outside temperatures .................... 136
Problems during charging .............. 144
Protective device ........................... 135
Range ............................................ 137
Reserve, warning lamp ................... 222
Terms of use .................................. 136
High-voltage disconnect device ......... 22
Hill start assist .................................. 128
HOLD function
Activating ....................................... 155
Deactivating ................................... 155
Display message ............................ 205
Function/note s............................. 154
Horn ...................................................... 25 I
Ignition lock see Key positions
Immobiliser .......................................... 67
Indicator and warning lamp
Restraint system ............................ 222
Indicator and warning lamps
COLLISION PREVENTION ASSIST
PLUS .............................................. 222 Index
9

Warning display ............................. 157
PASSENGER AIR BAG
Display message ............................1 99
Indicator lamps ................................ 35
Problems (malfunctions) ................ 199
Pets in the vehicle ............................... 61
Plastic trim (cleaning instruc-
tions) ................................................. .246
Power display ................................... .173
Power windows
see Side windows
Pre-Crash Safety System
see PRE-SAFE ®
(anticipatory
occupant protection)
PRE-SAFE ®
(anticipatory occupant
protection)
Operation ......................................... 48
PRE-SAFE ®
(preventive occupant
safety system)
Display message ............................ 196
Program selector button .................. 131
Protection against theft
ATA (Anti-Theft Alarm system) ......... 68
Immobiliser ...................................... 67
Interior motion sensor ..................... 69
Tow-away protection ........................ 68
Protection of the environment
General notes .................................. 19
Pulling away
Hill start assist ............................... 128 Q
QR code Mercedes-Benz Guide App ................. 1
Rescue card ..................................... 23
Qualified specialist workshop ........... 23R
Radio Selecting a station ......................... 180
see separate operating instructions
Radio-based vehicle components
Declaration of conformity ................ 22
Range
RANGE PLUS ................................. 137 RANGE PLUS
charge .......................................... .184
Range ............................................ 137
Reading lamp ..................................... 102
READY indicator ................................ 172
Rear bench seat
Folding the backrest forwards/
back ............................................... 228
Rear compartment
Setting the air vents ..................... .124
Rear foglamp
Changing bulbs .............................. 107
Display message ............................ 202
Switching on/off .............................. 98
Rear lamps
see Lights
Rear window heating
Problem (fault) ............................... 120
Switching on/off ........................... 119
Rear window wiper
Replacing the wiper blade .............. 111
Switching on/off ........................... 109
Rear-compartment seat belt sta-
tus indicator ........................................ 39
Rear-view mirror
Anti-dazzle mode (automatic) .......... 94
Dipping (manual ).............................. 93
Recuperative Brake System
Driving safety systems ..................... 67
Replacing bulbs
Important safety notes .................. 103
Overview of bulb types .................. 104
Removing/replacing the cover
(front wheel arch) .......................... 105
Rescue card ......................................... 23
Reserve
High-voltage battery ...................... 222
Residual heat (climate control) ........ 122
Restraint system
Display message ............................ 198
Introduction ..................................... 34
Warning lamp ................................. 222
Warning lamp (function) ................... 34
Reverse gear
Engaging ........................................ 130
Reversing camera
Cleaning instructions ..................... 246 Index
13

TEMPOMAT
Function/note s............................. 150
Through-loading ................................ 227
TIREFIT kit .......................................... 251
Tyre pressure not reached ............. 252
Tyre pressure reached ................... 253
Top Tether ............................................ 51
Total distance recorder .................... 176
Tow-away protection
Activating ......................................... 68
Deactivating ..................................... 68
Function ........................................... 68
Towing
Important safety notes .................. 260
Transporting the vehicle ................ 263
With the rear axle raised ................ 262
Towing away
Fitting the towing eye .................... 261
Removing the towing eye ............... 262
With both axles on the ground ....... 262
With front axle raised ..................... 262
Towing eye ......................................... 249
Traffic Sign Assist
Activating ....................................... 167
Activating/deactivating the warn- ing function .................................... 182
Display message ............................ 207
Function/note s............................. 166
Important safety notes .................. 167
Instrument cluster display ............. 167
Trailer tow hitch .................................. 22
Transmission
DIRECT SELECT lever ..................... 129
Drive program ................................ 131
Driving tips .................................... 131
Engaging the drive position ............ 130
Engaging the park position ............ 129
Holding the vehicle stationary on
uphill gradients .............................. 131
Kickdown ....................................... 131
Overview ........................................ 128
Program selector button ................ 131
Shifting to neutral .......................... 130
Transmission position display ......... 129
Transmission position display
(DIRECT SELECT lever) ...................... 129
Transmission positions .................... 131Transporting the vehicle
.................. 263
Trim pieces (cleaning instruc-
tions) .................................................. 247
Trip computer (on-board com-
puter) .................................................. 176
Trip meter
Calling up ....................................... 176
Resetting (on-board computer) ...... 178
Turn signals
Changing bulbs (front) ................... 106
Changing bulbs (rear) .................... 107
Switching on/of f.............................. 99
Two-way radio
Frequencies ................................... 280
Installation ..................................... 280
Transmission output (maximum) .... 280
Type identification plate
see Vehicle identification plate
Tyre pressure
Calling up (on-board computer) ..... 270
Display message ............................ 209
Not reached (TIREFIT) .................... 252
Reached (TIREFIT) .......................... 253
Recommended ............................... 269
Tyre pressure monitor
Checking the tyre pressure elec-
tronically ........................................ 271
Function/note s............................. 270
General notes ................................ 270
Important safety notes .................. 271
Radio type approval for the tyre
pressure monitor ........................... 272
Restarting ...................................... 272
Warning lamp ................................. 223
Warning message .......................... 271
Tyres
Changing a whee l.......................... 273
Checking ........................................ 267
Direction of rotation ...................... 273
Display message ............................ 209
General notes ................................ 277
Important safety notes .................. 266
Information on driving .................... 266
M+S tyres ...................................... 268
MOExtended tyre s......................... 268
Replacing ....................................... 273
Service life ..................................... 267
Storing ........................................... 274 16
Index

High-voltage switch-off device
!
The vehicle's high-voltage electrical system
must only be switched off when the vehicle is stationary by specially trained technicians.
The vehicle's high-voltage electrical system
may otherwise be damaged. Your vehicle is equipped with a high-voltage
switch-off device :which can be used to
switch off the vehicle's high-voltage electrical
system.
Mobile phone aerial !
It is not permitted to retrofit a mobile phone
aerial.
trailer tow hitch !
It is not permitted to retrofit a trailer cou-
pling.
Warning Vehicles with an electric motor generate signif-
icantly less noise than vehicles with internal
combustion engines. As a result, your vehicle
may not be heard by other road users until it is
very close to them, or it may not be heard at all.
This is particularly the case if other road users
have not yet seen your vehicle but are instead
relying on hearing. Drive with particular care,
allowing for the possibility that other road users may behave unpredictably.
The vehicle can be equipped with a sound gen-
erator. The sound generator is activated so that
other road users can hear your vehicle better.
The sound generator is activated at speeds
under 30 km/h and switches off automatically
at higher speeds. Declarations of conformity
Wireless vehicle components The following information applies to all compo-
nents of the vehicle and the information sys-
tems and communication devices integrated
into the vehicle which receive and/or transmit
radio waves:
The components of this vehicle that receive
and/or transmit radio waves are compliant with
the basic requirements and all other relevant
conditions of Directive 1999/5/EC. You can
obtain further information from any Mercedes-
Benz Service Centre.
Electromagnetic compatibility The electromagnetic compatibility of the vehicle
components has been checked and certified
according to the currently valid version of Reg-
ulation ECE-R 10. Diagnostics connection
The diagnostics connection is only intended for
the connection of diagnostic equipment at a
qualified specialist workshop. G
WARNING
If you connect equipment to a diagnostics
connection in the vehicle, it can affect the
operation of the vehicle systems. This may
affect the operating safety of the vehicle.
There is a risk of an accident.
Do not connect any equipment to a diagnos-
tics connection in the vehicle. 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 22
Introduction

Key functions
:
& Locks the vehicle
; % Unlocks the vehicle
X To unlock centrally: press the%button.
If you do not open the vehicle within approx-
imately 40 seconds of unlocking:
R the vehicle locks again
R protection against theft is reactivated
X To lock: press the &button.
The key centrally locks/unlocks:
R the doors
R the tailgate
R the charge socket flap
When unlocking, the turn signals flash once.
When locking, they flash three times.
When the locator lighting is activated in Audio
20/COMAND Online, it lights up when it is dark
after the vehicle is unlocked with the remote
control (see separate operating instructions).
You can also set an audible signal to confirm
that the vehicle has been locked. The audible
signal can be activated or deactivated using the
on-board computer (Y page 187).KEYLESS-GO
General notes Bear in mind that the drive system can be star-
ted by any of the vehicle occupants if there is a
key in the vehicle.
Locking and unlocking You can start, lock or unlock the vehicle using
KEYLESS-GO. To do this, you need to carry the
key with you. You can combine the KEYLESS-GO functions with the functions of a conventional
key. Unlock the vehicle by using KEYLESS-GO,
for instance, and lock it using the &button
on the key.
The driver's door and the door at which the han- dle is used must both be closed. The key must beoutside the vehicle. When locking or unlocking
with KEYLESS-GO, the distance between the keyand the corresponding door handle must not be
greater than 1 m.
A check which periodically establishes a radio
connection between the vehicle and the key
determines whether a valid key is in the vehicle. This occurs, for example:
R when starting the drive system
R whilst driving
R when the external door handles are touched
R during convenience closing X
To unlock the vehicle: touch the inner sur-
face of the door handle.
X To lock the vehicle: touch sensor surface :
or ;.
Make sure that you do not touch the inner
surface of the door handle.
X Convenience closing feature: touch
recessed sensor surface ;for an extended
period.
For further information on the convenience
closing feature (Y page 83).72
KeyOpening and closing

Problems with the key
Problem
Possible causes/consequences and
M
MSolutions You cannot lock or
unlock the vehicle using
the key. The key battery is discharged or nearly discharged.
X Vehicles without KEYLESS-GO or KEYLESS-GO start function:
try again to lock/unlock the vehicle using the remote control func-
tion of the key. Point the tip of the key at the driver's door handle
from close range and press the %or& button.
If this does not work:
X Check the key battery (Y page 74) and replace it if necessary
(Y page 75).
X Lock (Y page 80) or unlock (Y page 80) the vehicle using the
emergency key element. There is interference from a powerful source of radio waves.
X Vehicles without KEYLESS-GO or KEYLESS-GO start function:
try again to lock/unlock the vehicle using the remote control func-
tion of the key. Point the tip of the key at the driver's door handle
from close range and press the %or& button.
If this does not work:
X Lock (Y page 80) or unlock (Y page 80) the vehicle using the
emergency key element. The key is faulty.
X Lock (Y page 80) or unlock (Y page 80) the vehicle using the
emergency key element.
X Have the key checked at a qualified specialist workshop. You can no longer lock or
unlock the vehicle using
KEYLESS-GO. The key battery is discharged or nearly discharged.
X Check the key battery (Y page 74) and replace it if necessary
(Y page 75).
If this does not work: X Lock (Y page 80) or unlock (Y page 80) the vehicle using the
emergency key element. There is interference from a powerful source of radio waves.
X Lock (Y page 80) or unlock (Y page 80) the vehicle using the
emergency key element. 76
KeyOpening and closing

Problem
Possible causes/consequences and
M
MSolutions There is a fault with KEYLESS-GO.
X Lock/unlock the vehicle using the remote control function of the
key.
X Have the vehicle and key checked at a qualified specialist work-
shop.
If the vehicle can also not be locked/unlocked using the remote con-
trol function:
X Lock (Y page 80) or unlock (Y page 80) the vehicle using the
emergency key element.
X Have the vehicle and key checked at a qualified specialist work-
shop. The drive system cannot
be started using the key. the on-board voltage is too low
X Switch off non-essential consumers, e.g. seat heating or interior
lighting, and try to start the drive system again.
If this does not work: X Check the 12 V battery and charge it if necessary (Y page 256).
or
X Check the high-voltage battery and charge it if necessary
(Y page 135).
or
X Jump-start the vehicle (Y page 258).
or
X Consult a qualified specialist workshop. The drive system cannot
be started using the
Start/Stop button. The
key is in the vehicle. The vehicle is locked.
X Unlock the vehicle and try to start the vehicle again. The key battery is discharged or nearly discharged.
X Check the key battery (Y page 74) and replace it if necessary
(Y page 75).
If this does not work: X Start your vehicle with the key in the ignition lock. There is interference from a powerful source of radio waves.
X Start your vehicle with the key in the ignition lock. 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. Key
77Opening and closing Z

sufficient. If necessary, counteract the reduced
regenerative braking effect by applying the
brake yourself.
Before commencing your journey, ensure that
the charging cable required for charging the
high-voltage battery is in the vehicle. 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
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. and
the drive system cannot be started.
Start/Stop button General notes
Vehicles with KEYLESS-GO are equipped with
keys featuring an integrated KEYLESS-GO func- tion 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 vehicle. This occurs, for example, when starting the drivesystem.
When you insert the Start/Stop button into the
ignition lock, the system needs approximately
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. This is only the
case if you are not depressing the brake pedal.
If you depress the brake pedal and press the
Start/Stop button, the drive system starts
immediately.
To start the vehicle without actively using the
key:
R the Start/Stop button must be inserted in the
ignition lock
R the key must be in the vehicle
R the vehicle must not be locked with the key or
KEYLESS-GO (Y page 72)
Do not keep the KEYLESS-GO 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
This can affect the functionality of KEYLESS-GO.
If you lock the vehicle with the key's remote
control or with KEYLESS-GO, after a short time:
R you will not be able to switch on the ignition
with the Start/Stop button
R you will not be able to start the drive system
with the Start/Stop button until the vehicle is
unlocked again
If you lock the vehicle centrally using the button
on the front door (Y page 79), you can continue
to start the drive system with the Start/Stop
button.
The drive system can be switched off while the
vehicle is in motion by pressing and holding the
Start/Stop button for three seconds.
Key positions with the Start/Stop button :
Start/Stop button
; Ignition lock
When you switch on the ignition, all of the indi-
cator lamps in the instrument cluster light up. 126
DrivingDriving and parking