check engine light MERCEDES-BENZ B-CLASS SPORTS 2015 Owners Manual

AUTO lightsDisplay message ............................ 222
see Lights
Automatic car wash (care) ...............276
Automatic engine start (ECO start/
stop function) ................................... .139
Automatic engine switch-off (ECO
start/stop function) .......................... 139
Automatic headlamp mode .............. 104
Automatic transmission
Accelerator pedal position ............. 146
Automatic drive program .............. .147
Changing gear ............................... 146
DIRECT SELECT lever ..................... 142
Drive program displa y.................... 143
Driving tips .................................... 146
Emergency running mode .............. 150
Engaging drive position .................. 145
Engaging neutral ............................ 144
Engaging park position automati-
cally ............................................... 143
Engaging reverse gear ................... 144
Engaging the park position ............ 143
Holding the vehicle stationary on
uphill gradients .............................. 146
Kickdown ....................................... 146
Manual drive progra m.................... 148
Overview ........................................ 142
Problem (malfunction) ................... 150
Program selector button ................ 147
Pulling away ................................... 138
Starting the engine ........................ 137
Steering wheel paddle shifters ...... 147
Transmission position display ........ 143
Transmission positions .................. 145
Automatic transmission emer-
gency mode ....................................... 150
B
Backup lamp
Changing bulb s.............................. 112
Display message ............................ 221
Bag hook ............................................ 255
BAS (Brake Assist System) ................. 61
Battery (SmartKey)
Checking .......................................... 73
Important safety notes .................... 73 Replacing ......................................... 74
Battery (vehicle)
Charging ........................................ 291
Display message ............................ 223
Important safety notes .................. 289
Jump starting ................................. 293
Blind Spot Assist
Activating/deactivating (on-
board computer) ............................ 203
Display message ............................ 226
Notes/function .............................. 185
Brake fluid
Display message ............................ 214
Notes ............................................. 338
Brake force distribution
see EBD (electronic brake force
distribution)
Brake lamps
Display message ............................ 220
Brakes
ABS .................................................. 61
Adaptive Brake Assist ...................... 63
BAS .................................................. 61
Brake fluid (notes) ......................... 338
Display message ............................ 208
EBD .................................................. 66
Hill start assist ............................... 138
HOLD function ............................... 170
Important safety notes .................. 157
Maintenance .................................. 158
Parking brake ................................ 153
Riding tips ...................................... 157
Warning lamp ................................. 237
Breakdown
see Flat tire
Brightness control (instrument
cluster lighting) ................................... 29
Buttons on the steering wheel ......... 193C
Calling up a malfunction
see Display messages
Care
Car wash ........................................ 276
Carpets .......................................... 282
Display ........................................... 280
Exhaust pipe .................................. 280
Index5

Switching the rear window
defroster on/off............................ 129
Switching the ZONE function on/
off .................................................. 127
Cockpit
Overview .......................................... 28
COLLISION PREVENTION ASSIST
PLUS
Activating/deactivating ................. 203
Display message ............................ 214
Operation/note s.............................. 62
COMAND display
Cleaning ......................................... 280
Combination switch .......................... 106
Compass
Calibrating ..................................... 267
Calling up ....................................... 267
Magnetic field zone maps .............. 268
Setting ........................................... 267
Consumption statistics (on-board
computer) .......................................... 196
Convenience closing feature .............. 83
Convenience opening feature ............ 82
Coolant (engine)
Checking the level ......................... 273
Display message ............................ 222
Filling capacity ............................... 339
Important safety notes .................. 339
Temperature gaug e........................ 192
Warning lamp ................................. 244
Cooling
see Climate control
Copyright ............................................. 26
Crash-responsive emergency light-
ing ....................................................... 109
Cruise control
Activation conditions ..................... 161
Cruise control lever ....................... 161
Deactivating ................................... 162
Display message ............................ 228
Driving system ............................... 161
Function/note s............................. 161
Important safety notes .................. 161
Setting a speed .............................. 162
Storing and maintaining current
speed ............................................. 162 Cup holder
Center console .............................. 260
Important safety notes .................. 259
Rear compartment ......................... 260
Customer Assistance Center
(CAC) ..................................................... 24
Customer Relations Department ....... 24
D
Data
see Technical data
Daytime running lamps
Display message ............................ 221
Function/note s............................. 104
Switching on/off (on-board com-
puter) ............................................. 205
Declarations of conformity ................. 23
Diagnostics connection ...................... 23
Digital speedometer ......................... 197
DIRECT SELECT lever
Automatic transmission ................. 142
Display messages
ASSYST PLUS ................................ 274
Calling up (on-board computer) ..... 207
Driving systems ............................. 225
Engine ............................................ 222
General notes ................................ 207
Hiding (on-board computer) ........... 207
Lights ............................................. 219
Safety systems .............................. 208
SmartKey ....................................... 234
Tires ............................................... 229
Vehicle ........................................... 230
Distance display (on-board com- puter) .................................................. 202
Distance recorder ............................. 196
Distance warning (warning lamp) .... 246
Distance warning function
Function/note s................................ 62
Warning lamp ................................. 246
DISTRONIC PLUS
Activation conditions ..................... 164
Cruise control lever ....................... 164
Deactivating ................................... 167
Display message ............................ 227
Displays in the multifunction dis-
play ................................................ 168
Index7

Important safety notes .................. 139
Introduction ................................... 139
Emergency
Automatic measures after an acci-
dent ................................................ .54
Emergency release
Driver's door .................................... 78
Vehicle ............................................ .78
Emergency spare wheel
General notes ................................ 329
Important safety notes .................. 329
Removing ...................................... .330
Technical data ............................... 331
Emergency Tensioning Devices
Activation ......................................... 52
Emergency unlocking
Tailgate ............................................ 80
Emissions control
Service and warranty information .... 21
Engine
Check Engine warning lamp ........... 244
Display message ............................ 222
ECO start/stop function ................ 139
Engine number ............................... 335
Irregular running ............................ 141
Jump-starting ................................. 293
Starting problems .......................... 141
Starting the engine with the
SmartKey ....................................... 137
Starting with the Start/Stop but-
ton ................................................. 138
Switching off .................................. 153
Tow-starting (vehicle) ..................... 298
Engine electronics
Problem (malfunction) ................... 141
Engine oil
Adding .......................................... .272
Additives ........................................ 338
Checking the oil level ..................... 271
Checking the oil level using the
dipstick .......................................... 272
Display message ............................ 224
Filling capacity ............................... 338
Notes about oil grades ................... 337
Notes on oil level/consumption .... 271
Viscosity ........................................ 338 ESP
®
(Electronic Stability Pro-
gram)
Activating/deactivating (on-
board computer) ............................ 202
Characteristics ................................. 65
Deactivating/activating (notes) ....... 65
Display message ............................ 208
ETS/4ETS ........................................ 64
Function/notes ................................ 64
General notes .................................. 64
Important safety information ........... 64
Trailer stabilization ........................... 66
Warning lamp ................................. 240
ETS/4ETS (Electronic Traction Sys-
tem) ...................................................... 64
Exhaust
see Exhaust pipe
Exhaust check ................................... 156
Exhaust pipe
Cleaning ......................................... 280
Exterior lighting
Cleaning ......................................... 279
see Lights
Exterior mirrors
Adjusting ......................................... 98
Dipping (automatic) ......................... 99
Folding in when locking (on-boardcomputer) ...................................... 206
Folding in/out (automatically )......... 99
Folding in/out (electrically) ............. 98
Out of position (troubleshooting) ..... 99
Setting ............................................. 99
Storing settings (memory func-
tion) ............................................... 101
Storing the parking position .......... 100
Eyeglasses compartment ................. 249
F
Filler cap
see Fuel filler flap
Flat tire
MOExtended tire s.......................... 285
Preparing the vehicle ..................... 284
TIREFIT kit ...................................... 286
see Emergency spare wheel
Floormats ........................................... 268
Index9

Switching on/off........................... 106
Start/Stop button
Removing ....................................... 136
Starting the engine ........................ 138
Start/stop function
see ECO start/stop function
Starting (engine) ................................ 137
Status overview (on-board com- puter) .................................................. 201
STEER CONTROL .................................. 66
Steering (display message) .............. 233
Steering assistant STEER CON- TROL
see STEER CONTROL
Steering wheel
Adjusting (manually) ........................ 97
Button overview ............................... 31
Buttons (on-board computer) ......... 193
Cleaning ......................................... 280
Important safety notes .................... 97
Paddle shifters ............................... 147
Steering wheel paddle shifters ........ 147
Stowage compartments
Armrest (front) ............................... 250
Armrest (under) ............................. 250
Center console .............................. 249
Center console (rear) ..................... 250
Cup holders ................................... 259
Eyeglasses compartment ............... 249
Glove box ....................................... 249
Important safety information ......... 249
Map pockets .................................. 251
Stowage net ................................... 251
Under driver's seat/front-
passenger sea t.............................. 250
Stowage net ....................................... 251
Summer tires ..................................... 304
Sun visor ............................................ 261
Switching air-recirculation mode
on/off ................................................. 130
T
Tachometer ........................................ 193
Tail lamps
Display message ............................ 220
see Lights Tailgate
Display message ............................ 232
Emergency unlocking ....................... 80
Important safety notes .................... 79
Opening dimensions ...................... 341
Opening/closing (from outside) ....... 80
Tank content
Fuel gauge ....................................... 29
Technical data
Capacities ...................................... 335
Emergency spare wheel ................. 331
Information .................................... 334
Tires/wheels ................................. 326
Vehicle data ................................... 341
Telephone
Accepting a call (multifunction
steering wheel) .............................. 200
Display message ............................ 233
Introduction ................................... 200
Menu (on-board computer) ............ 200
Number from the phone book ........ 200
Redialing ........................................ 201
Rejecting/ending a call ................. 200
Temperature
Coolant .......................................... 192
Outside temperature ...................... 193
Setting (climate control )................ 126
Through-loading feature ................... 252
Tire pressure
Checking manually ........................ 309
Display message ............................ 229
Maximum ....................................... 308
Not reached (TIREFIT) .................... 288Note s............................................. 307
Reached (TIREFIT) .......................... 288
Recommended ............................... 305
Tire pressure loss warning system
General notes ................................ 309
Important safety notes .................. 309
Restarting ...................................... 309
TIREFIT kit .......................................... 286
Tires
Aspect ratio (definition) ................. 321
Average weight of the vehicle
occupants (definition) .................... 320
Bar (definition) ............................... 319
Changing a whee l.......................... 322
Characteristics .............................. 319
16Index

chains. Only in this way will the driving safety
systems described in this section work as
effectively as possible.
ABS (Anti-lock Braking System)
General information
ABS regulates brake pressure in such a way
that the wheels do not lock when you brake.
This allows you to continue steering the vehi- cle when braking. The ! ABS warning lamp in the instrument
cluster lights up when the ignition is switched
on. It goes out when the engine is running.
Important safety notes
iObserve the "Important safety notes" sec-
tion ( Ypage 60).
GWARNING
If ABS is faulty, the wheels could lock when
braking. The steerability and braking charac-
teristics may be severely impaired. Addition-
ally, further driving safety systems are deac-
tivated. There is an increased danger of skid-
ding and accidents.
Drive on carefully. Have ABS checked imme-
diately at a qualified specialist workshop.
When ABS is malfunctioning, other systems,
including driving safety systems, will also
become inoperative. Observe the information on the ABS warning lamp ( Ypage 238) and
display messages which may be shown in the
instrument cluster ( Ypage 208).
ABS works from a speed of about 5 mph
(8 km/h), regardless of road-surface condi-
tions. ABS works on slippery surfaces, even
when you only brake gently.
Braking
X If ABS intervenes: continue to depress the
brake pedal vigorously 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, and func-
tions as a reminder to take extra care while
driving.
BAS (Brake Assist System)
General information
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
iObserve the "Important safety notes" sec-
tion ( Ypage 60).
GWARNING
If BAS is malfunctioning, the braking distance
in an emergency braking situation is
increased. There is a risk of an 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 firmly depressed 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.
Driving safety systems61
Safety
Z

ing safety systems are deactivated. This
increases the risk of skidding and an accident.Drive on carefully. Have ESP ®
checked at a
qualified specialist workshop.
ESP ®
is only deactivated if the åwarning
lamp is lit continuously.
If the ÷ warning lamp and the åwarn-
ing lamp are lit continuously, ESP ®
is not
available due to a malfunction.
Observe the information on warning lamps ( Y page 240) and display messages which
may be shown in the instrument cluster( Y page 208).
Only use wheels with the recommended tire
sizes. Only then will ESP ®
function properly.
Characteristics of ESP®
General information
If the ÷ ESP®
warning lamp goes out
before beginning the journey, ESP ®
is auto-
matically active.
If ESP ®
intervenes, the ÷ESP®
warning
lamp flashes in the instrument cluster.
If ESP ®
intervenes:
X Do not deactivate ESP ®
under any circum-
stances.
X Only depress the accelerator pedal as far as
necessary when pulling away.
X Adapt your driving style to suit the prevail-
ing road and weather conditions.
ECO start/stop function
The ECO start/stop function switches the
engine off automatically when the vehicle
stops moving. The engine starts automati-
cally when the driver wants to pull away again. ESP ®
remains in its previously selected sta-
tus. Example: if ESP®
was deactivated before
the engine was switched off, ESP ®
remains
deactivated when the engine is switched onagain.
Deactivating/activating ESP®
Important safety notes
You can select between the following states
of ESP ®
:
R ESP ®
is activated.
R ESP ®
is deactivated.
GWARNING
If you deactivate ESP ®
, ESP ®
no longer sta-
bilizes the vehicle. There is an increased risk
of skidding and an accident.
Only deactivate ESP ®
in the situations descri-
bed in the following.
It may be best to deactivate ESP ®
in the fol-
lowing situations:
R when using snow chains
R in deep snow
R on sand or gravel
iActivate ESP ®
as soon as the situations
described above no longer apply. ESP ®
will
otherwise not be able to stabilize the vehi-
cle if the vehicle starts to skid or a wheel
starts to spin.
!Avoid spinning the driven wheels for an
extended period with ESP ®
deactivated.
You could otherwise damage the drivetrain.
Deactivating/activating ESP ®
You can deactivate or activate ESP ®
via the
on-board computer ( Ypage 202).
ESP ®
deactivated:
The å ESP®
OFF warning lamp in the
instrument cluster lights up. ESP ®
activated:
The å ESP®
OFF warning lamp in the
instrument cluster goes out.
Characteristics when ESP ®
is deactivated
If ESP ®
is deactivated and one or more wheels
start to spin, the ÷ESP®
warning lamp in
the instrument cluster flashes. In such situa-
tions, ESP ®
will not stabilize the vehicle.
Driving safety systems65
Safety
Z

The SmartKey centrally locks/unlocks:R the doors
R the tailgate
R the fuel filler flap
The turn signals flash once when unlocking
and three times when locking.
iWhen the locator lighting is activated in
Audio 20/COMAND, it also lights up when
it is dark after the vehicle is unlocked with
the remote control (see the separate oper- ating instructions).
iYou can also set an audible signal to con-
firm that the vehicle has been locked. The
audible signal can be activated and deacti- vated using the on-board computer( Y page 205).
KEYLESS-GO
General notes
Bear in mind that the engine can be started by
any of the vehicle occupants if there is a
SmartKey in the vehicle.
Locking/unlocking centrally
You can start, lock or unlock the vehicle using
KEYLESS-GO. To do this, you only need carry the SmartKey with you. You can combine the
functions of KEYLESS-GO with those of a con-
ventional SmartKey. Unlock the vehicle by
using KEYLESS-GO, for instance, and lock it
using the &button on the SmartKey.
The driver's door and the door at which the
handle is used, must both be closed. The
SmartKey must be outside the vehicle. When locking or unlocking with KEYLESS-GO, the
distance between the SmartKey and the cor-
responding door handle must not be greater
than 3 ft (1 m). A check which periodically establishes a radio
connection between the vehicle and the
SmartKey determines whether a valid Smart- Key is in the vehicle. This occurs, for example:
R when starting the engine
R whilst driving
R when the external door handles aretouched
R during convenience closing
X To unlock the vehicle: touch the inner
surface of the door handle.
X To lock the vehicle: touch sensor sur-
face :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 exten-
ded period.
Further information on the convenience
closing feature ( Ypage 83).
X
To unlock the tailgate: pull the tailgate
handle.
SmartKey71
Opening and closing
Z

Deactivating and activating
If you do not intend to use the vehicle for a
longer period of time, you can deactivate KEY-
LESS-GO. The SmartKey will then use very lit- tle power, thereby conserving battery power.
For the purposes of activation/deactivation,
the vehicle must not be nearby. X To deactivate: press the&button on
the SmartKey twice in rapid succession.
The battery check lamp of the SmartKey( Y page 73) lights up twice briefly and
KEYLESS-GO is deactivated.
X To activate: press any button on the
SmartKey or insert the SmartKey into the
ignition lock.
KEYLESS-GO and all of its associated fea-
tures are available again.
KEYLESS-GO start function
Bear in mind that the engine can be started by any of the vehicle occupants if there is a
SmartKey in the vehicle.
Changing the settings of the locking
system
You can change the settings of the locking
system. This means that only the driver's doorand the fuel filler flap are unlocked when the
vehicle is unlocked. This is useful if you fre-
quently travel on your own.
X To change the setting: simultaneously
press the %and& buttons for
approximately 6 seconds until the battery
check lamp ( Ypage 73) flashes twice.
iIf the setting of the locking system is
changed within the signal range of the vehi- cle, pressing the &or% button:
R locks or
R unlocks the vehicle The SmartKey now functions as follows:
X To unlock the driver's door: press the
% button once.
X To unlock centrally: press the%but-
ton twice.
X To lock centrally: press the&button.
The KEYLESS-GO function is changed as fol-
lows:
X To unlock the driver's door: touch the
inner surface of the door handle on the
driver's door.
X To unlock centrally: touch the inner sur-
face of the door handle on the front-
passenger door or the rear door.
X To lock centrally: touch the outer sensor
surface on one of the door handles.
X To restore the factory settings: simulta-
neously press the %and& buttons
for approximately 6 seconds until the bat-
tery check lamp flashes twice( Y page 73).
Mechanical key
General notes
If the vehicle can no longer be locked or
unlocked with the SmartKey or KEYLESS-GO, use the mechanical key.
If you use the mechanical key to unlock and
open the driver's door or the trunk lid, the
anti-theft alarm system will be triggered( Y page 67).
There are several ways to turn off the alarm:
X To turn the alarm off with the SmartKey:
press the %or& button on the
SmartKey.
or X Insert the SmartKey into the ignition lock.
or
X To deactivate the alarm with KEYLESS- GO: press the Start/Stop button in the igni-
72SmartKey
Opening and closing

ProblemPossible causes/consequences andMSolutions
KEYLESS-GO is malfunctioning.
X Lock/unlock the vehicle using the remote control function of
the SmartKey.
X Have the vehicle and SmartKey checked at a qualified specialist
workshop.
If the vehicle can also not be locked/unlocked using the remote
control function: X Unlock ( Ypage 78) or lock ( Ypage 79) the vehicle using the
mechanical key.
X Have the vehicle and SmartKey checked at a qualified specialist
workshop.
The engine cannot be
started using the
SmartKey.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 engine again.
If this does not work:
X Check the starter battery and charge it if necessary (Y page 291).
or
X Jump-start the vehicle ( Ypage 293).
or
X Consult a qualified specialist workshop.
The engine cannot be
started using the Start/
Stop button. The
SmartKey is in the vehi-
cle.The vehicle is locked.
X Unlock the vehicle and try to start the vehicle again.
The SmartKey battery is discharged or nearly discharged.
X Check the SmartKey battery ( Ypage 73) and replace it if nec-
essary ( Ypage 74).
If this does not work:
X Start your vehicle with the SmartKey in the ignition lock.
There is interference from a powerful source of radio waves.
X Start your vehicle with the SmartKey in the ignition lock.
76SmartKey
Opening and closing

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).
Correct driver's seat position
GWARNING
You could lose control of your vehicle if you do
the following while driving:
R adjust the driver's seat, head restraint,
steering wheel or mirrors
R fasten the seat belt
There is a risk of an accident.
Adjust the driver's seat, head restraint, steer-
ing wheel and mirror and fasten your seat belt before starting the engine.
X Observe the safety guidelines on seat
adjustment ( Ypage 93).
X Make sure that seat =is adjusted prop-
erly.
Manual seat adjustment ( Ypage 94)
Electrical seat adjustment ( Ypage 94)
When adjusting the seat, make sure that:
R you are as far away from the driver's air
bag as possible
R you are sitting in a normal upright posi-tion
R you can fasten the seat belt properly
R you have moved the backrest to an
almost vertical position
R you have set the seat cushion angle so
that your thighs are gently supported
R you can depress the pedals properly
X Check whether the head restraint is adjus-
ted properly ( Ypage 94).
When doing so, make sure that you have
adjusted the head restraint so that the back of your head is supported at eye level by the
center of the head restraint.
X Observe the safety notes on steering col-
umn adjustment ( Ypage 97).
X Make sure that steering wheel :is adjus-
ted properly.
Adjusting the steering wheel ( Y page 97)
When adjusting the steering wheel, make
sure that:
R you can hold the steering wheel with your
arms slightly bent
R you can move your legs freely
R you can see all the displays in the instru-
ment cluster clearly
X Observe the safety guidelines for seat belts
( Y page 40).
X Check whether you have fastened seatbelt ;properly ( Ypage 42).
92Correct driver's seat position
Seats, steering wheel and mirrors