2012 MERCEDES-BENZ B-CLASS brake light

1, 2, 3 ...
12 V socket see Sockets A
ABS (Anti-lock Braking System) Display message ............................ 201
Function/notes ................................
59
Important safety notes .................... 59
Warning lamp ................................. 225
Activating/deactivating cooling
with air dehumidification ................. 123
Active Parking Assist Canceling ....................................... 176
Detecting parking spaces .............. 173
Display message ............................ 216
Exiting a parking space .................. 175
Function/notes ............................. 173
Important safety notes .................. 172
Parking .......................................... 174
ADAPTIVE BRAKE ................................. 64
Adaptive Brake Assist Function/notes ................................ 61
Adaptive brake lamps .........................62
Adaptive Highbeam Assist Display message ............................ 212
Function/notes ............................. 102
Switching on/off (on-board
computer) ...................................... 197
Additional speedometer ................... 196
Additives (engine oil) ........................332
Air bags Deployment ..................................... 39
Front air bag (driver, front
passenger) ....................................... 42
Important safety notes .................... 41
Knee bag .......................................... 44
Safety guidelines ............................. 40
Side impact air bag .......................... 44
Window curtain air bag ....................45
Air-conditioning system
see Climate control
Air vents
Important safety notes .................. 130
Rear ............................................... 131
Setting ........................................... 130Setting the center air vents
...........130
Setting the side air vents ............... 130
Alarm system
see ATA (Anti-Theft Alarm system)


Ambient lighting
Setting the brightness (on-board
computer) ...................................... 197
Anti-lock braking system
see ABS (Anti-lock Braking System)
Anti-theft alarm system
see ATA (Anti-Theft Alarm system)
Ashtray ............................................... 249
Assistance menu (on-board
computer) .......................................... 194
ASSYST PLUS Displaying a service message ........ 270
Hiding a service message .............. 270
Notes ............................................. 270
Resetting the service interval
display ........................................... 270
Service message ............................ 270
Special service requirements ......... 271
ATA (Anti-Theft Alarm system)
Activating/deactivating ................... 65
Function ........................................... 65
Switching off the alarm .................... 65
ATTENTION ASSIST
Activating/deactivating ................. 195
Display message ............................ 215
Function/notes ............................. 180
Audio menu (on-board computer) .... 192
Audio system see separate operating instructions
Authorized Centers
see Qualified specialist workshop
Authorized Mercedes-Benz Center
see Qualified specialist workshop
Authorized workshops
see Qualified specialist workshop
AUTO lights
Display message ............................ 211
see Lights
Automatic engine start (ECO start/
stop function) .................................... 137
Automatic engine switch-off (ECO
start/stop function) .......................... 137
Automatic headlamp mode ................994
Index
ProCarManuals.com

Automatic transmission
Automatic drive program ............... 144
Changing gear ............................... 143
DIRECT SELECT lever .....................140
Display message
............................ 220
Drive program display ....................141
Driving tips .................................... 143
Emergency running mode ..............147
Engaging drive position .................. 142
Engaging neutral ............................ 141
Engaging reverse gear ................... 141
Engaging the park position ............ 141
Holding the vehicle stationary on
uphill gradients .............................. 143
Kickdown ....................................... 143
Manual drive program ....................144
Overview ........................................ 140
Problem (malfunction) ...................147
Program selector button ................143
Pulling away ................................... 136
Starting the engine ........................ 135
Steering wheel paddle shifters ...... 144
Transmission position display ........ 141
Transmission positions .................. 142
Automatic transmission
emergency mode ............................... 147B
Backup lamp Changing bulbs .............................. 109
Display message ............................ 211
Bag hook

............................................ 243
BAS (Brake Assist System) ................. 59
Battery (SmartKey) Checking .......................................... 70
Important safety notes .................... 70
Replacing ......................................... 70
Battery (vehicle)
Charging ........................................ 288
Display message ............................ 213
Important safety notes .................. 285
Jump starting ................................. 289
Belt force limiter
Activation ......................................... 49
Function ........................................... 49
Blinds
see Roller sunblind Blind Spot Assist
Activating/deactivating .................195
Display message

............................ 216
Notes/function .............................. 181
Brake Assist
see BAS (Brake Assist System)
Brake fluid
Display message ............................ 207
Notes ............................................. 332
Brake lamps
Adaptive ........................................... 62
Changing bulbs .............................. 109
Display message ............................ 209
Brakes
ABS .................................................. 59
Adaptive Brake Assist ......................61
BAS .................................................. 59
Brake fluid (notes) .........................332
Display message ............................ 201
Driving tips .................................... 154
Important safety notes .................. 154
Maintenance .................................. 155
Parking brake ................................ 150
Warning lamp ................................. 225
Breakdown
see Flat tire
see Towing away/tow-starting
Bulbs
see Changing bulbs C
Calling up a malfunction see Display messages


Car
see Vehicle
Care
Carpets .......................................... 277
Car wash ........................................ 271
Display ........................................... 275
Exhaust pipe .................................. 275
Exterior lights ................................ 274
Gear or selector lever ....................276
Interior ........................................... 275
Matte finish ................................... 273
Notes ............................................. 271
Paint .............................................. 273
Plastic trim .................................... 276 Index
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Power washer ................................
272
Rear view camera .......................... 275
Roof lining ...................................... 277
Seat belt
........................................ 277
Seat cover ..................................... 276
Sensors ......................................... 275
Steering wheel ............................... 276
Trim pieces .................................... 276
Washing by hand ........................... 272
Wheels ........................................... 273
Windows ........................................ 274
Wiper blades .................................. 274
Wooden trim .................................. 276
Cargo compartment cover ...............244
Cargo compartment enlargement ...240
Important safety notes .................. 240
Notes on use ................................. 242
Cargo compartment floor
Height adjustment .........................246
Important safety notes .................. 245
Opening/closing ............................ 246
Stowage well (under) ..................... 245
Cargo net
Attaching ....................................... 245
Important safety information ......... 245
Cargo tie down rings .........................243
Car wash (care) ................................. 271
Center console Lower section .................................. 33
Upper section .................................. 32
Central locking
Automatic locking (on-board
computer) ...................................... 198
Locking/unlocking (SmartKey) ........ 68
Changing bulbs
Brake lamps ................................... 109
Cornering light function .................108
High-beam headlamps ...................107
Important safety notes .................. 104
License plate lighting .....................111
Low-beam headlamps .................... 107
Overview of bulb types ..................105
Parking lamps ................................ 108
Rear fog lamp ................................ 109
Removing/replacing the cover
(front wheel arch) .......................... 106
Reversing lamps ............................ 109
Standing lamps (front) ...................108Tail lamps
...................................... 109
Turn signals (front) ......................... 108
Turn signals (rear)
..........................109
Child-proof locks
Important safety notes .................... 57
Rear doors ....................................... 58
Children
In the vehicle ................................... 50
Restraint systems ............................ 50
Child seat
Automatic recognition ..................... 53
LATCH-type (ISOFIX) child seat
anchors ............................................ 54
On the front-passenger seat ............52
Problem (malfunction) .....................57
Top Tether ....................................... 55
Cigarette lighter ................................ 250
Climate control Automatic climate control ............. 119
Automatic climate control (dual-
zone) .............................................. 121
Controlling automatically ...............125
Cooling with air dehumidification ..123
Defrosting the windows ................. 127
Defrosting the windshield .............. 127
Important safety notes .................. 118
Indicator lamp ................................ 125
Maximum cooling .......................... 127
Notes on using automatic climate
control ................................... 120, 122
Overview of systems ...................... 118
Problems with cooling with air
dehumidification ............................ 125
Problem with the rear window
defroster ........................................ 129
Refrigerant ..................................... 334
Refrigerant filling capacity .............335
Setting the air distribution .............126
Setting the airflow ......................... 126
Setting the air vents ......................130
Setting the temperature ................ 125
Switching air-recirculation mode
on/off ............................................ 129
Switching on/off ........................... 123
Switching residual heat on/off ...... 1296
Index
ProCarManuals.com

E
EASY-VARIO-PLUS system Cargo compartment enlargement ..240
EBD (electronic brake force
distribution)
Display message ............................ 203
Function/notes ................................
64
ECO display
Function/notes ............................. 153
On-board computer ....................... 190
ECO start/stop function
Automatic engine start .................. 137
Automatic engine switch-off .......... 137
Deactivating/activating ................. 138
General information ....................... 136
Important safety notes .................. 136
Electronic Stability Program
see ESP ®
(Electronic Stability Program)
Emergency release
Driver's door .................................... 75
Vehicle ............................................. 75
Emergency spare wheel
General notes ................................ 325
Important safety notes .................. 325
Removing ....................................... 326
Technical data ............................... 326
Emergency Tensioning Devices
Activation ......................................... 39
Function ........................................... 49
Safety guidelines ............................. 40
Emergency unlocking
Tailgate ............................................ 76
Emissions control
Service and warranty information .... 21
Engine
Check Engine warning lamp ........... 231
Display message ............................ 212
ECO start/stop function ................ 136
Engine number ............................... 329
Irregular running ............................ 139
Jump-starting ................................. 289
Starting problems .......................... 139
Starting the engine with the
SmartKey ....................................... 135
Switching off .................................. 150
Tow-starting (vehicle) ..................... 294 Engine electronics
Problem (malfunction) ...................139
Engine oil
Adding ........................................... 268
Additives ........................................ 332
Checking the oil level ..................... 267
Checking the oil level using the
dipstick
.......................................... 268
Display message ............................ 214
Filling capacity ............................... 332
Notes about oil grades ................... 332
Notes on oil level/consumption .... 267
Viscosity ........................................ 332
ESP ®
(Electronic Stability
Program) Deactivating/activating ................. 194
Deactivating/activating (notes) ....... 63
Display message ............................ 201
ETS .................................................. 62
Function/notes ......................... 62, 63
Important safety information ........... 62
Warning lamp ................................. 227
ETS (Electronic Traction System) ....... 62
Exhaust check ................................... 152
Exhaust pipe (cleaning instructions) 275
Exterior lighting Setting options ................................ 98
see Lights
Exterior mirrors
Adjusting ......................................... 92
Dipping (automatic) .........................93
Folding in/out (automatically) ......... 93
Folding in/out (electrically) ............. 93
Folding in when locking (on-board
computer) ...................................... 199
Out of position (troubleshooting) .....93
Setting ............................................. 93
Storing settings (memory function) .. 95
Storing the parking position ............. 94
Eyeglasses compartment ................. 237 F
Filler cap see Fuel filler flap


First-aid kit ......................................... 280
Flat tire MOExtended tires .......................... 281 Index
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ProCarManuals.com

N
Navigation Menu (on-board computer) ............ 191
see separate operating instructions

Notes on breaking-in a new vehicle 134O
Occupant safety Children in the vehicle .....................50
Important safety notes .................... 38
Oil
see Engine oil


On-board computer
Assistance menu ........................... 194
Audio menu ................................... 192
Convenience submenu .................. 199
Displaying a service message ........ 270
Display messages ..........................200
Factory settings submenu ............. 199
Important safety notes .................. 186
Instrument cluster submenu ..........196
Lighting submenu .......................... 197
Menu overview .............................. 189
Message memory .......................... 200
Navigation menu ............................ 191
Operation ....................................... 187
Service menu ................................. 196
Settings menu ............................... 196
Standard display ............................ 189
Telephone menu ............................ 193
Trip menu ...................................... 189
Vehicle submenu ........................... 198
Video DVD operation ..................... 193
Opening and closing the side trim
panels ................................................. 109
Operating system see On-board computer
Outside temperature display ...........187
Overhead control panel ......................34
Override feature Rear side windows ........................... 58P
Paint code number ............................ 328
Paintwork (cleaning instructions) ...273
Panic alarm .......................................... 38Panorama roof with power tilt/
sliding panel
Opening/closing the roller
sunblind ........................................... 82
Problem (malfunction) .....................82
Resetting ......................................... 82
Panorama sliding sunroof
Important safety notes .................... 80
Parcel net

........................................... 239
Parking ............................................... 149
Important safety notes .................. 149
Parking brake ................................ 150
Position of exterior mirror, front-
passenger side ................................. 94
Rear view camera .......................... 176
see Active Parking Assist
see PARKTRONIC
Parking aid
Active Parking Assist .....................172
see Exterior mirrors
see PARKTRONIC
Parking brake
Display message ............................ 203
Electric parking brake ....................150
Warning lamp ................................. 230
Parking lamps
Switching on/off ........................... 100
Parking lamps (changing bulbs) ......108
PARKTRONIC Deactivating/activating ................. 171
Driving system ............................... 169
Function/notes ............................. 169
Important safety notes .................. 169
Problem (malfunction) ...................172
Range of the sensors ..................... 169
Warning display ............................. 170
PASSENGER AIRBAG OFF indicator
lamp ...................................................... 53
Plastic trim (cleaning instructions) . 276
Power washers .................................. 272
Power windows see Side windows
Program selector button .................. 143
Protection of the environment General notes .................................. 20
Pulling away
Automatic transmission ................. 136 Index
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Dashboard
Function Page
:
Steering wheel paddle
shifters
144
;
Combination switch 100
=
Instrument cluster 29
?
Horn
A
DIRECT SELECT lever 140
B
PARKTRONIC warning
display
169
C
Overhead control panel 34
D
Climate control systems
118 Function Page
E
Ignition lock 135
F
Adjusting the steering
wheel
91
G
Cruise control lever 158
H
Electric parking brake 150
I
Light switch 98
J
Diagnostics connection 24
K
Opening the hood 26628
DashboardAt a glance
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an accident, the restraint systems on the
front-passenger side might be triggered.
Have triggered
restraint
systems replaced.Driver's air bag
: deploys in front of the
steering wheel; front-passenger front air
bag ; deploys in

front of and above the glove
box.
The front air bags increase protection for the
driver's and front-passenger's head and
chest.
They are deployed:
R at the start of an accident with a high rate
of vehicle acceleration or deceleration in a
longitudinal direction
R in the event of certain frontal impacts
R if the system determines that air bag
deployment can offer additional protection
to that provided by the seat belt
R depending on whether the seat belt is being
used
R independently of other air bags in the
vehicle
If the vehicle rolls over, the front air bags are
generally not deployed.
Front-passenger air bag ; is only activated
if the system determines that the front-
passenger seat is occupied. The 4
PASSENGER AIR BAG OFF indicator lamp on
the center console does not light up
(Y page 53). If a child restraint system is installed on the
front-passenger seat and the PASSENGER
AIR BAG OFF
4 indicator lamp on the
center console is not on:
R a child restraint system without a
transponder for the air bag deactivation
system is installed or
R a child
restraint

system with a transponder
has not been installed properly.
Your vehicle has adaptive, two-stage front air
bags. The air bag control unit evaluates
vehicle deceleration or acceleration in the
event of a collision. In the first deployment
stage, the front air bag is filled with part of the
total available propellant gas, thereby
reducing the risk of injury. If the air bag
control unit recognizes within a few
milliseconds that the vehicle is being braked
or accelerated faster than originally
predicted, the front air bag is filled with the
maximum amount of propellant gas available.
The lighter the passenger-side occupant, the
higher the vehicle deceleration rate required
(predicted at the start of the impact) for
second stage inflation of the front-passenger
front air bag. In the second stage, the front
air bags are inflated with the maximum
amount of propellant gas available.
The front air bags are not deployed in
situations where a low impact severity is
predicted. You will then be protected by the
fastened seat belt.
The front-passenger front air bag will only
deploy if:
R the 45 indicator lamp on the center
console is not lit (Y page 53)
R the air bag control unit predicts a high
impact severity Occupant safety
43
Safety Z
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such as seat adjustment, steering wheel
adjustment, or the memory function
If children open
a door, they could injure other
persons or get out of the vehicle and injure
themselves or be injured by following traffic.
Do not expose the child restraint system to
direct sunlight. The child restraint system's
metal parts, for example, could become very
hot, and the child could be burned on these
parts.
Child-proof locks for the rear doors G
WARNING
Children could open a rear door from inside
the vehicle. This could result in serious
injuries or an accident. Therefore, when
children ride in

the rear always secure the rear
doors with the child-proof locks. You can secure each door individually with
the child-proof
locks

on the rear doors. A door
secured with a child-proof lock cannot be
opened from inside the vehicle. When the
vehicle is unlocked, the door can be opened
from the outside.
X To activate: press the child-proof lock
lever up in the direction of arrow :.
X Make sure that the child-proof locks are
working properly.
X To deactivate: press the child-proof lock
lever down in the direction of arrow ;. Override feature for the rear side
windows G
WARNING
When children ride on the vehicle's rear seats,
activate the override switch. Otherwise, the
children could be injured, e.g. by trapping
themselves in the rear side window. X
To activate/deactivate: press button :.
If
indicator lamp is lit, operation of the rear
side windows is disabled. Operation is only
possible using the switches in the driver's
door. If the indicator lamp is off, operation
is possible using the switches in the rear
compartment. Driving safety systems
Overview of driving safety systems
In this section,
you will find information about
the following driving safety systems:
R ABS ( Anti-lock Braking System)
(Y page 64)
R BAS ( Brake Assist System) ( Y page 59)
R COLLISION PREVENTION ASSIST (adaptive
Brake Assist and distance warning signal)
(Y page 60)
R Adaptive brake lights ( Y page 62)
R ESP ®
(Electronic Stability Program)
(Y page 62)
R EBD ( Electronic Brake force Distribution)
(Y page 64) 58
Driving safety systems
Safety
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