2015 MERCEDES-BENZ B-CLASS SPORTS air conditioning

1, 2, 3 ...
4ETS (Electronic Traction System)see ETS/4ETS (Electronic Trac-
tion System)
4MATIC
Display message ............................ 232
4MATIC (permanent four-wheel
drive) .................................................. 172
12 V socket
see Sockets
A
ABS (Anti-lock Braking System)Display message ............................ 208
Function/notes ................................ 61
Important safety notes .................... 61
Warning lamp ................................ .238
Accident
Automatic measures after an acci-
dent ................................................. 54
Activating/deactivating cooling
with air dehumidification ................. 124
Active Parking Assist
Detecting parking spaces .............. 176
Display message ............................ 227
Exiting a parking space .................. 178
Function/notes ............................ .175
Important safety notes .................. 175
Parking .......................................... 177
ADAPTIVE BRAKE ................................. 66
Adaptive Brake Assist
Function/notes ................................ 63
Adaptive Highbeam Assist
Function/notes ............................ .107
Switching on/off ........................... 108
Additional speedometer ................... 204
Additives (engine oil) ........................ 338
Air bag
Occupant Classification System
(OCS) ............................................... 47
Air bags
Deployment ..................................... 52
Display message ............................ 218
Front air bag (driver, front
passenger) ....................................... 45
Important safety notes .................... 44 Introduction ..................................... 44
Knee bag .......................................... 46
PASSENGER AIR BAG indicator
lamps ............................................... 39
Side impact air bag .......................... 46
Window curtain air bag .................... 46
Air vents
Important safety notes .................. 131
Rear ............................................... 132
Setting the center air vents ........... 131
Setting the side air vents .............. .131
Air-conditioning system
see Climate control
Alarm
ATA (Anti-Theft Alarm system) ......... 67
Switching off (ATA) .......................... 67
Switching the function on/off
(ATA) ................................................ 67
Animals in the vehicle ......................... 60
Ashtray ............................................... 261
Assistance display (on-board com- puter) ................................................. .202
Assistance menu (on-board com-puter) ................................................. .201
ASSYST PLUS
Displaying a service message ....... .275
Driving abroad ............................... 275
Hiding a service message .............. 274
Information about Service ............. 275
Resetting the service interval dis-pla y................................................ 275
Service message ............................ 274
Special service requirements ......... 275
ATA (Anti-Theft Alarm system)
Activating/deactivating ................... 67
Function ........................................... 67
Switching off the alarm .................... 67
ATTENTION ASSIST
Activating/deactivating ................. 203
Display message ............................ 225
Function/note s............................. 183
Audio menu (on-board computer) .... 199
Audio system
see separate operating instructions
Authorized Mercedes-Benz Center
see Qualified specialist workshop
4Index

Exterior lights ................................ 279
Gear or selector lever .................... 280
Interior........................................... 280
Matte finish ................................... 277
Notes ............................................. 275
Paint .............................................. 277
Plastic trim .................................... 280
Power washe r................................ 277
Rear view camera .......................... 279
Roof lining ...................................... 282
Seat belt ........................................ 282
Seat cove r..................................... 281
Sensors ......................................... 279
Steering wheel ............................... 280
Trim pieces .................................... 281
Washing by hand ........................... 276
Wheels ........................................... 278
Windows ........................................ 278
Wiper blades .................................. 278
Wooden trim .................................. 281
Cargo compartment cover
Important safety notes .................. 256
Installing/removing ....................... 256
Notes/how to use ......................... 256
Cargo compartment enlargement ... 252
Cargo compartment floor
Height adjustment ......................... 258
Important safety notes .................. 257
Opening/closing ............................ 258
Stowage well (under )..................... 257
Cargo net
Attaching ....................................... 257
Important safety information ......... 256
Cargo tie down rings ......................... 255
CD player/CD changer (on-board
computer) .......................................... 199
Center console
Lower section .................................. 33
Upper section .................................. 32
Central locking
Automatic locking (on-board com-
puter) ............................................. 205
Locking/unlocking (SmartKey )........ 70
Changing bulbs
High-beam headlamp s................... 111
License plate lighting ..................... 113
Low-beam headlamp s.................... 111
Rear fog lamp ................................ 112 Reversing lamps ............................ 112
Turn signals (front) ......................... 112
Child
Restraint system .............................. 55
Child seat
Forward-facing restraint system ...... 58
LATCH-type (ISOFIX) child seat
anchors ............................................ 56
On the front-passenger sea t............ 58
Rearward-facing restraint system .... 58
Top Tether ....................................... 57
Child-proof locks
Important safety notes .................... 59
Rear doors ....................................... 59
Children
Special seat belt retractor ............... 55
Cigarette lighter ................................ 262
Cleaning
Mirror turn signal ........................... 279
Climate control
Air-conditioning system ................. 121
Automatic climate control (dual-
zone) .............................................. 123
Controlling automaticall y............... 126
Cooling with air dehumidification .. 124
Defrosting the window s................. 128
Defrosting the windshield .............. 128
General notes ................................ 120
Indicator lamp ................................ 126
Information about using auto-
matic climate control ..................... 123
Notes on using the air-condition-
ing system ..................................... 121
Overview of systems ...................... 120
Problem with the rear window
defroster ........................................ 130
Problems with cooling with air
dehumidification ............................ 126
Refrigerant ..................................... 340
Refrigerant filling capacity ............. 340
Setting the air distribution ............. 127
Setting the air vents ...................... 131
Setting the airflow ......................... 127
Setting the temperature ................ 126
Switching air-recirculation modeon/of f............................................ 130
Switching on/of f........................... 124
Switching residual heat on/off ...... 130
6Index

Reading lamp..................................... 108
Rear compartment
Setting the air vents ...................... 132
Rear fog lamp
Changing bulb s.............................. 112
Display message ............................ 220
Switching on/of f........................... 105
Rear lamps
see Lights
Rear seat
Adjusting the angle of the backr-
ests ................................................ 254
Folding the backrest forwards/
back (vehicles with the EASY-
VARIO-PLUS system) ..................... 253
Folding the backrest forwards/
back (vehicles without the EASY-
VARIO-PLUS system) ..................... 252
Fore-and-aft adjustment ................ 254
Rear view camera
Cleaning instructions ..................... 279
Displays in the Audio display ......... 180
Displays in the COMAND display ... 180
Function/note s............................. 180
Switching on/of f........................... 180
Rear window defroster
Problem (malfunction) ................... 130
Switching on/of f........................... 129
Rear window wiper
Replacing the wiper blad e.............. 116
Switching on/of f........................... 114
Rear-view mirror
Anti-glare (manual) .......................... 98
Dipping (automatic) ......................... 99
Recuperation display ........................ 196
Refrigerant (air-conditioning sys-tem)
Important safety notes .................. 340
Refueling
Fuel gaug e....................................... 29
Important safety notes .................. 150
Refueling process .......................... 151
see Fuel
Remote control
Garage door opener ....................... 263
Programming (garage door
opener) .......................................... 264 Replacing bulbs
Important safety notes .................. 109
Overview of bulb types .................. 110
Removing/replacing the cover
(front wheel arch) .......................... 111
Rescue card ......................................... 25
Reserve (fuel tank)
see Fuel
Reserve fuel
Display message ............................ 225
Warning lamp ................................. 244
see Fuel
Residual heat (climate control) ........ 130
Restraint system
Display message ............................ 215
Introduction ..................................... 38
Warning lamp ................................. 243
Warning lamp (function) ................... 39
Reversing feature
Panorama sliding sunroo f................ 86
Roller sunblind ................................. 87
Side windows ................................... 81
Roadside Assistance (breakdown) .... 22
Roller sunblind
Opening/closing .............................. 88
Panorama roof with power tilt/
sliding panel ..................................... 87
Roof carrier ........................................ 259
Roof lining and carpets (cleaning
guidelines) ......................................... 282
Roof load (maximum) ........................ 341
S
Safety
Children in the vehicle ..................... 54
Seat belts
Adjusting the height ......................... 42
center rear-compartment sea t......... 43
Cleaning ......................................... 282
Correct usage .................................. 41
Fastening ......................................... 42
Important safety guidelines ............. 40
Introduction ..................................... 40
Releasing ......................................... 43
Warning lamp ................................. 235
Warning lamp (function) ................... 43
14Index

SeatsAdjusting (electrically) ..................... 94
Adjusting (manually) ........................ 94
Adjusting the 4-way lumbar sup-
port .................................................. 95
Adjusting the head restraint ............ 94
Cleaning the cover ........................ .281
Correct driver's seat position ........... 92
Folding the backrest (rear com-
partment) forwards/back (vehi-
cles with the EASY-VARIO-PLUS
system) .......................................... 253
Folding the backrest (rear com-
partment) forwards/back (vehi-
cles without the EASY-VARIO-
PLUS system) ................................ 252
Important safety notes .................... 93
Seat heating problem ..................... .97
Storing settings (memory func-
tion) ............................................... 101
Switching seat heating on/of f......... 96
Securing cargo .................................. 255
Selector lever
Cleaning ......................................... 280
Sensors (cleaning instructions) ....... 279
Service menu (on-board com- puter) .................................................. 204
Service message
see ASSYST PLUS
Service products
Brake fluid ..................................... 338
Coolant (engine) ............................ 339
Engine oil ....................................... 337
Fuel ................................................ 335
Important safety notes .................. 335
Refrigerant (air-conditioning sys-
tem) ............................................... 340
Washer fluid ................................... 339
Setting the air distribution ............... 127
Setting the airflow ............................ 127
Settings
Factory (on-board computer) ......... 206
On-board computer ....................... 204
Side impact air bag ............................. 46
Side marker lamp (display mes-
sage) ................................................... 221 Side windows
Cleaning ......................................... 278
Convenience closing feature ............ 83
Convenience opening feature .......... 82
Important safety information ........... 81
Opening/closing .............................. 82
Problem (malfunction) ..................... 85
Resetting ......................................... 84
Reversing feature ............................. 81
Sliding sunroof
see Panorama roof with power
tilt/sliding panel
SmartKey
Changing the battery ....................... 74
Changing the programming ............. 72
Checking the battery ....................... 73
Convenience closing feature ............ 83
Convenience opening feature .......... 82
Display message ............................ 234
Door central locking/unlocking ....... 70
Important safety notes .................... 70
KEYLESS-GO start function .............. 72
Loss ................................................. 75
Mechanical key ................................ 72
Positions (ignition lock) ................. 135
Problem (malfunction) ..................... 75
Starting the engine ........................ 137
SmartKey positions (ignition lock) .. 135
Snow chains ...................................... 305
Sockets
Center console .............................. 263
General notes ................................ 262
Luggage compartment ................... 263
Rear compartment ......................... 263
Special seat belt retractor .................. 55
Specialist workshop ............................ 24
Speed, controlling
see Cruise control
Speedometer
Activating/deactivating the addi-
tional speedometer ........................ 204
Digital ............................................ 197
In the Instrument cluster ................. 29
Segments ...................................... 193
Selecting the unit of measure-
ment .............................................. 204
Standing lamps
Display message ............................ 221
Index15

Useful information
iThis Operator's Manual describes all
models and all standard and optional equip- ment of your vehicle available at the time of
publication of the Operator's Manual.
Country-specific differences are possible.
Please note that your vehicle may not be
equipped with all features described. This
also applies to safety-related systems and
functions.
iRead the information on qualified special-
ist workshops ( Ypage 24).
Overview of climate control systems
General notes
Observe the settings recommended on the
following pages. The windows could other-
wise fog up.
To prevent the windows from fogging up:
R switch off climate control only briefly
R switch on air-recirculation mode only briefly
R switch on the cooling with air dehumidifi-
cation function
R switch on the defrost windshield function
briefly, if required
The air-conditioning system/dual-zone auto-
matic climate control regulates the tempera- ture and the humidity of the vehicle interior
and filters out undesirable substances from
the air.
The air-conditioning system/dual-zone auto-
matic climate control can only be operated
when the engine is running. Optimum opera-
tion is only achieved with the side windows
and panorama roof with power tilt/sliding
panel closed.
The residual heat function can only be acti-
vated or deactivated with the ignition
switched off ( Ypage 130).
Always keep the ventilation flaps behind the
side paneling in the cargo compartment clear. Otherwise the vehicle will not be ventilated
correctly.
iVentilate the vehicle for a brief period
during warm weather, e.g. using the con-
venience opening feature ( Ypage 82). This
will speed up the cooling process and the
desired interior temperature will be
reached more quickly.
iThe integrated filter filters out most par-
ticles of dust and soot and completely fil-
ters out pollen. It also reduces gaseous pol- lutants and odors. A clogged filter reduces
the amount of air supplied to the vehicle
interior. For this reason, you should always observe the interval for replacing the filter, which is specified in the Maintenance
Booklet. As it depends on environmental
conditions, e.g. heavy air pollution, the
interval may be shorter than stated in the
Maintenance Booklet.
iIt is possible that under certain circum-
stances the residual heat function may be
activated automatically an hour after the
SmartKey has been removed in order to dry the automatic climate control. The vehicle
is then ventilated for 30 minutes.
120Overview of climate control systems
Climate control

Air-conditioning system control panel
:Sets the temperature (Ypage 126)
;Defrosts the windshield ( Ypage 128)
=Sets the air distribution ( Ypage 127)
?Activates/deactivates air-recirculation mode ( Ypage 130)
ASets the airflow ( Ypage 127)
BSwitches cooling with air dehumidification on/off ( Ypage 124)
CSwitches the rear window defroster on/off ( Ypage 129)
Notes on using the air-conditioning
system
Air-conditioning system
Below, you can find a number of notes and
recommendations to help you use the air-
conditioning system optimally.
R Switch on the air-conditioning system by
turning control knob Aclockwise to the
desired position (except position 0).
R Set the temperature to 22 †.
R Recommendation for avoiding misted
windows at low exterior temperatures
or in rain: switch on the ¿cooling with
dehumidification function ( Ypage 124).
Set air distribution to ¯and if possible
switch off PandO (Y page 127).
Deactivate air-recirculation mode e
( Y page 130). Set airflow control
Ato a setting between
3 and 6(Y page 127).
R Recommendation for rapid cooling or
heating of the vehicle interior: briefly set
airflow control Ato a setting between 3
and 6(Y page 127).
R Recommendation for a constant vehi-
cle interior temperature: set airflow con-
trol Ato a setting between 1and 3
( Y page 127).
R Recommendation for air distribution in
winter: select the Oand¯ settings
( Y page 127).
Recommendation for air distribution in
summer: select the PorP and
¯ settings ( Ypage 127).
R Only use the "Windshield defrosting" func-
tion briefly until the windshield is clear
again.
Overview of climate control systems121
Climate cont rol

RUse the residual heat function if you want to
heat or ventilate the vehicle interior when
the ignition is switched off. The residual
heat function can only be activated or deac- tivated with the ignition switched off.
R If you change the settings of the climate
control system, the climate status display
appears for approximately three seconds
at the bottom of the screen in the Audio/
COMAND display (see separate operating
instructions). You will see the current set-
tings of the various climate control func-tions.
ECO start/stop function
During automatic engine switch-off, the cli-
mate control system only operates at a
reduced capacity. If you require the full cli-
mate control output, you can switch off the
ECO start/stop function by pressing the ECO
button ( Ypage 140).
Operating the climate control sys- tems
Switching climate control on/off
General notes
When the climate control is switched off, the air supply and air circulation are also
switched off. The windows could fog up.
Therefore, switch off climate control onlybriefly
Air-conditioning system
X Turn the SmartKey to position 2in the igni-
tion lock ( Ypage 135).
X To switch on: turn controlAclockwise to
the desired position (except position 0)
( Y page 121).
X To switch off: turn controlAcounter-
clockwise to position 0(Y page 121).
Dual-zone automatic climate control
X
Turn the SmartKey to position 2in the igni-
tion lock ( Ypage 135).
X To activate: press theÃbutton.
The indicator lamp in the Ãbutton lights
up. Airflow and air distribution are set to
automatic mode.
or
X Press the ^button.
The indicator lamp in the ^button goes
out. The previously selected settings arerestored.
X To deactivate: press the^button.
The indicator lamp in the ^button lights
up.
iDual-zone automatic climate control:
switch on climate control primarily using the à button.
Activating/deactivating cooling with
air dehumidification
General notes
If you deactivate the "Cooling with air-dehu-
midification" function, the air inside the vehi- cle will not be cooled. The air inside the vehi-cle will also not be dehumidified. The win-
dows can fog up more quickly. Therefore, only
deactivate the "Cooling with air-dehumidifi-
cation" function briefly.
The "Cooling with air dehumidification" func-
tion is only available when the engine is run-
ning. The air inside the vehicle is cooled and
dehumidified according to the temperatureselected.
Condensation may drip from the underside of the vehicle when it is in cooling mode. This is
normal and not a sign that there is a malfunc- tion.
124Operating the climate control systems
Climate control

Problems with the "Cooling with air dehumidification" function
ProblemPossible causes/consequences andMSolutions
The indicator lamp in the¿ button
flashes three times or
remains off. The "Cool-
ing with air dehumidifi-
cation" function cannot
be switched on.Cooling with air dehumidification has been deactivated due to a
malfunction.
X Visit a qualified specialist workshop.
Setting climate control to automatic
General notes
The automatic function is only available in
conjunction with dual-zone automatic climate
control.
In automatic mode, the set temperature is
maintained automatically at a constant level. The system automatically regulates the tem-
perature of the dispensed air, the airflow and
the air distribution.
The automatic mode functions optimally
when the "Cooling with air dehumidification"
function is activated. If necessary, cooling
with air dehumidification can be deactivated.
If you deactivate the "Cooling with air-dehu-
midification" function, the air inside the vehi-
cle will not be cooled. The air inside the vehi- cle will also not be dehumidified. The win-
dows can fog up more quickly. Therefore, only deactivate the "Cooling with air-dehumidifi-
cation" function briefly.
Setting climate control to automatic
X Turn the SmartKey to position 2in the igni-
tion lock ( Ypage 135).
X Set the desired temperature.
X To activate: press theÃbutton.
The indicator lamp in the Ãbutton lights
up. Automatic air distribution and airflow
are activated. X
To switch to manual mode: press the
É orË button.
or X Press the KorI button.
The indicator lamp in the Ãbutton goes
out. Automatic air distribution and airflow
are deactivated.
Setting the temperature
Air-conditioning system
You can set the temperature for the entire
vehicle. The set temperature is automatically maintained at a constant level.
X Turn the SmartKey to position 2in the igni-
tion lock ( Ypage 135).
X To increase/reduce: turn control:
clockwise or counter-clockwise( Y page 121). Only change the temperature
setting in small increments. Start at 22 †.
Dual-zone automatic climate control
Different temperatures can be set for the
driver's and front-passenger sides. The set
temperature is automatically maintained at a
constant level.
X Turn the SmartKey to position 2in the igni-
tion lock ( Ypage 135).
X To increase/reduce: turn thumbwheel:
or E to the left or right ( Ypage 123). Only
126Operating the climate control systems
Climate control