2015 MERCEDES-BENZ C-Class SEDAN check engine light

Armrest
Stowage compartment .................. 300
Ashtray .............................................. .309
Assistance display (on-board com-
puter) ................................................. .243
Assistance menu (on-board com-
puter) ................................................. .244
ASSYST PLUS Displaying a service message ....... .329
Hiding a service message .............. 328
Notes ............................................. 328
Resetting the service interval dis-
play ................................................ 329
Service message ............................ 328
Special service requirements ......... 329
ATA (Anti-Theft Alarm system)
Activating/deactivating ................... 76
Function .......................................... .76
Switching off the alarm .................... 76
ATTENTION ASSIST
Activating/deactivating ................. 246
Display message ............................ 271
Function/note s............................. 216
Authorized Mercedes-Benz Center
see Qualified specialist workshop
Authorized workshop
see Qualified specialist workshop
AUTO lights
Display message ............................ 266
see Lights
Automatic car wash (care) ............... 330
Automatic engine start (ECO start/
stop function) .................................... 161
Automatic engine switch-off (ECO
start/stop function) .......................... 161
Automatic headlamp mode .............. 124
Automatic transmission Accelerator pedal position ............. 167
AGILITY SELECT switch .................. 167
Changing gear ............................... 167
DIRECT SELECT lever ..................... 164
Display message ............................ 280
Drive program ................................ 168
Drive program display .................... 166
Driving tips .................................... 167
Emergency running mode .............. 171
Engaging drive position .................. 166 Engaging neutral ............................ 165
Engaging park position automati-
cally ............................................... 165
Engaging reverse gear ................... 165
Engaging the park position ............ 164
Kickdown ....................................... 167
Manual shifting .............................. 169
Overview ........................................ 164
Problem (malfunction) ................... 171
Pulling away ................................... 160
Starting the engine ........................ 159
Steering wheel paddle shifters ...... 169
Transmission position display
(DIRECT SELECT lever) ................... 166
Transmission positions .................. 166
Automatic transmission emer-
gency mode ....................................... 171 B
Backup lamp Changing bulb s.............................. 132
Bag hook ............................................ 304
BAS (Brake Assist System) ................. 67
BAS PLUS with Cross-Traffic Assist
(Brake Assist PLUS with Cross-
Traffic Assist)
Function/note s................................ 67
Important safety notes .................... 67
Battery (SmartKey)
Checking .......................................... 84
Important safety notes .................... 83
Replacing ......................................... 84
Battery (vehicle)
Charging ........................................ 347
Display message ............................ 268
Important safety notes .................. 345
Jump starting ................................. 349
Belt
see Seat belts
Blind Spot Assist
Activating/deactivating (on-
board computer) ............................ 246
Display message ............................ 273
Notes/function .............................. 217
see Active Blind Spot Assist
Box (trunk) ......................................... 304 Index
5

Children
In the vehicle .................................. .59
Restraint systems ............................ 61
Special seat belt retractor .............. .60
Child seat
Forward-facing restraint system ...... 64
LATCH-type (ISOFIX) child seat
anchors ............................................ 62
On the front-passenger seat ............ 63
Rearward-facing restraint system .... 64
Top Tether ...................................... .62
Cigarette lighter ................................ 309
Cleaning Mirror turn signal .......................... .334
Climate control
Automatic climate control (3-
zone) .............................................. 141
Controlling automatically .............. .144
Cooling with air dehumidification .. 143
Defrosting the windows ................. 148
Defrosting the windshield .............. 147
Dual-zone automatic climate con-
trol ................................................. 139
ECO start/stop function (3-zone
automatic climate control) ............. 142
ECO start/stop function (dual-
zone automatic climate control) .... 139
Important safety notes .................. 138
Indicator lamp ................................ 144
Information about using auto-
matic climate control ..................... 142
Information about using dual-zone
automatic climate control .............. 139
Ionization ....................................... 152
Overview of systems ..................... .138
Perfume atomizer .......................... 150
Problems with cooling with air
dehumidification ............................ 144
Problem with the rear window
defroster ........................................ 149
Rear control panel ......................... 141
Refrigerant ..................................... 402
Refrigerant filling capacity ............. 403
Setting the air distribution ............. 146
Setting the airflow ......................... 146
Setting the air vents ..................... .152
Setting the climate mode .............. .145 Setting the temperature ................ 145
Switching air-recirculation mode
on/off ............................................ 149
Switching on/off ........................... 142
Switching residual heat on/off ...... 149
Switching the rear window
defroster on/off ............................ 148
Switching the synchronization
function on and off ........................ 147
Climate control system
Automatic engine start .................. 161
Automatic engine switch-off .......... 161
Climate control (3-zone automaticclimate control) ............................ .142
Deactivating/activating ................. 162
Important safety notes .................. 161
Introduction ................................... 161
Cockpit
Overview .......................................... 32
COLLISION PREVENTION ASSIST
PLUS
Activating/deactivating ................. 245
Display message ............................ 258
Operation/notes .............................. 69
COMAND display
Cleaning ......................................... 336
Combination switch .......................... 126
Consumption statistics (on-board
computer) .......................................... 237
Convenience box ............................... 304
Convenience closing feature .............. 99
Convenience opening feature ............ 98
Coolant (engine) Checking the level ......................... 327
Display message ............................ 267
Filling capacity ............................... 402
Important safety notes .................. 401
Temperature display in the instru-
ment cluster .................................. 231
Temperature display in the on-
board computer ............................ .244
Warning lamp ................................. 291
Cooling
see Climate control
Copyright ............................................. 29 Index
7

Emissions control
Service and warranty information .... 23
Engine
Check Engine warning lamp .......... .291
Display message ............................ 267
ECO start/stop function ................ 161
Engine number ............................... 397
Irregular running ............................ 163
Jump-starting ................................. 349
Starting problems .......................... 163
Starting the engine with the
SmartKey ....................................... 159
Starting with the Start/Stop but-
ton ................................................. 159
Switching off .................................. 175
Tow-starting (vehicle) ..................... 354
Engine electronics
Problem (malfunction) ................... 163
Engine oil
Adding .......................................... .326
Additives ........................................ 400
Checking the oil level ..................... 325
Checking the oil level using the
dipstick .......................................... 325
Display message ............................ 269
Filling capacity ............................... 400
Notes about oil grades ................... 400
Notes on oil level/consumption .... 325
Viscosity ........................................ 400
ESP ®
(Electronic Stability Pro-
gram) Characteristics ................................. 72
Deactivating/activating ................... 72
Display message ............................ 251
ETS/4ETS ........................................ 72
Function/notes ................................ 71
General notes .................................. 71
Important safety information ........... 72
Warning lamp ................................. 288
ETS/4ETS (Electronic Traction Sys-
tem) ...................................................... 72
Exhaust see Exhaust pipe
Exhaust check ................................... 178
Exhaust pipe Cleaning ......................................... 335 Exterior lighting
Cleaning ......................................... 333
see Lights
Exterior mirrors
Adjusting ....................................... 118
Dipping (automatic) ....................... 119
Folding in/out (automatically) ....... 118
Folding in/out (electrically) ........... 118
Out of position (troubleshooting) ... 119
Setting ........................................... 118
Storing settings (memory func-
tion) ............................................... 121
Storing the parking position .......... 119
Eyeglasses compartment ................. 299 F
Features ............................................. 306
Filler cap see Fuel filler flap
Flat tire
Changing a wheel/mounting the
spare whee l................................... 381
MOExtended tire s.......................... 341
Preparing the vehicle ..................... 341
TIREFIT kit ...................................... 342
Floormats ........................................... 322
Fording On flooded roads ........................... 182
Fuel
Additives ........................................ 399
Consumption information .............. 399
Consumption statistics .................. 237
Displaying the current consump-
tion ................................................ 236
Displaying the range ...................... 236
Driving tip s.................................... 178
Fuel gaug e....................................... 33
Grade (gasoline )............................ 398
Important safety notes .................. 398
Problem (malfunction) ................... 174
Refueling ........................................ 171
Tank content/reserve fue l............. 398
Fuel filler flap
Opening ......................................... 172
Fuel level
Calling up the range (on-board
computer) ...................................... 236 10
Index

Warning and indicator lamps
Function Page
0043
00BB
ESP®
OFF 288
0044
00E5
ESP® 288
0087
00BA
Distance warning 293
0085
00CC
Power steering 295
0083
003E003D
Turn signals 126
0084
0024
Electric parking brake
(yellow) 290
006B
0025
ABS 286
006C
00B9
Check Engine 291
006D
Electric parking brake (red) 290
0049
USA only 0024
Canada only 006E
Brakes (red) 285
0027
USA only 004D
Canada only 006F
00AC
Coolant 291 Function Page
0070
004D
Brakes (yellow) 285
0071
0075
Restraint system 42
0072
00E9
Seat belt 284
0073
0057
High-beam head-
lamps 126
0074
0058
Low-beam head-
lamps 125
0075
00B6
Reserve fuel 291
0076
0060
Parking lamps,
license plate and instru-
ment cluster lighting 126
0077
005A
This lamp has no func-
tion 0078
005E
Rear fog lamps 125
0079
0077
Tire pressure monitor 29434
Instrument clusterAt a glance

For more information about children traveling
with you in the vehicle and on child restraint
systems, see "Children in the vehicle"
(Y page 59). Important safety notes
G
WARNING
Modifications to the restraint system may
cause it to no longer work as intended. The
restraint system may then not perform its
intended protective function and may fail in an accident or trigger unexpectedly, for example.
This poses an increased risk of injury or even fatal injury.
Never modify parts of the restraint system.
Never tamper with the wiring, the electronic
components or their software.
If it is necessary to modify an air bag system to
accommodate a person with disabilities, con- tact an authorized Mercedes-Benz Center for
details. USA only: for further information con- tact our Customer Assistance Center at
1-800-FOR-MERCede s (1‑800‑367 ‑6372). Restraint system warning lamp
The functions of the restraint system are
checked after the ignition is switched on and
at regular intervals while the engine is run-
ning. Therefore, malfunctions can be detec-
ted in good time.
The 0075 restraint system warning lamp in
the instrument cluster lights up when the igni- tion is switched on. It goes out no later than afew seconds after the engine is started. The
components of the restraint system are in
operational readiness.
A malfunction has occurred if the 0075
restraint system warning lamp:
R does not light up after the ignition is
switched on
R does not go out after a few seconds with
the engine running
R lights up again while the engine is running G
WARNING
If restraint system is malfunctioning, restraint system components may be triggered unin-
tentionally or might not be triggered at all in
the event of an accident with a high rate of
vehicle deceleration. This can affect the Emer- gency Tensioning Device or air bag, for exam-
ple. This poses an increased risk of injury or
even fatal injury.
Have the restraint system checked and
repaired in a qualified specialist workshop as
soon as possible. PASSENGER AIR BAG indicator lamp
PASSENGER AIR BAG ON indicator lamp
0043
and PASSENGER AIR BAG OFF indicator
lamp 0044are part of the Occupant Classifica-
tion System (OCS).
The indicator lamps display the status of the
front-passenger front air bag.
R PASSENGER AIR BAG ON 0043lights up: the
front-passenger front air bag is enabled. If,
in the event of an accident, all deployment
criteria are met, the front-passenger front
air bag is deployed.
R PASSENGER AIR BAG OFF 0044lights up: the
front-passenger front air bag is deactiva-
ted. They will then not be deployed in the
event of an accident. Occupant safety
43Safety Z

den steering or braking, thereby injuring vehi-
cle occupants. There is a risk of an accident
and injury.
Never leave animals unattended in the vehi-
cle. Always secure animals properly during
the journey, e.g. use a suitable animal trans-
port box. 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 BrakingSystem)
(Y page 66)
R BAS (Brake AssistSystem) (Y page 67)
R BAS PLUS with Cross-Traffic Assist ( Brake
Assist System PLUS with Cross-Traffic
Assist) (Y page 67)
R COLLISION PREVENTION ASSIST PLUS
(distance warning function and adaptive
Brake Assist) (Y page 69)
R ESP ®
(Electronic StabilityProgram)
(Y page 71)
R EBD ( Electronic Brake force Distribution)
(Y page 73)
R ADAPTIVE BRAKE (Y page 74)
R PRE-SAFE ®
Brake (Y page 74)
R STEER CONTROL (Y page 76)Important safety notes
If you fail to adapt your driving style or
become distracted, the driving safety sys-
tems can neither reduce the risk of accident
nor override the laws of physics. Driving
safety systems are merely aids designed to
assist driving. You are responsible for the dis-
tance to the vehicle in front, for vehicle speed and for braking in good time. Always adapt
your driving style to suit the prevailing road,
weather and traffic conditions and maintain a safe distance from the vehicle in front. Drive
carefully.
The driving safety systems described only
work as effectively as possible when there is
adequate contact between the tires and the
road surface. Please pay special attention to
the notes on tires, recommended minimum
tire tread depths, etc. (Y page 358).
In wintry driving conditions, always use winter
tires (M+S tires) and if necessary, snow
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 0025 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 i
Observe the "Important safety notes" sec-
tion (Y page 66). G
WARNING
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 (Y page 286) and
display messages which may be shown in the
instrument cluster (Y page 251).66
Driving safety systemsSafety

ETS/4ETS (Electronic Traction System)
i
Observe the "Important safety notes" sec-
tion (Y page 66).
ETS traction control is part of ESP ®
. On vehi-
cles with 4MATIC, 4ETS is part of ESP ®
.
Traction control brakes the drive wheels indi-
vidually if they spin. This enables you to pull
away and accelerate on slippery surfaces, for
example if the road surface is slippery on one side. In addition, more drive torque is trans-
ferred to the wheel or wheels with traction.
Traction control remains active, even if you
deactivate ESP ®
.
Important safety notes i
Observe the "Important safety notes" sec-
tion (Y page 66). G
WARNING
If ESP ®
is malfunctioning, ESP ®
is unable to
stabilize the vehicle. Additionally, further driv- 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.
! If you test the parking brake using a brake
dynamometer, switch the ignition off.
Application of the brakes by ESP ®
may oth-
erwise destroy the brake system.
When towing the vehicle with the rear axle
raised, observe the notes on ESP ®
(Y page 353).
ESP ®
is deactivated if the warning lamp 00BB
in the instrument cluster lights up and:
R the vehicle is moving
R the ECO start/stop function is activated
If the 00E5 warning lamp lights up continu-
ously, ESP ®
is not available due to a malfunc-
tion.
Observe the information on warning lamps
(Y page 288) and display messages which
may be shown in the instrument cluster
(Y page 251). Only use wheels with the recommended tire
sizes. Only then will ESP
®
function properly.
Characteristics of ESP ® General information
If the
00E5 ESP warning lamp goes out before
beginning the journey, ESP ®
is automatically
active.
If ESP ®
intervenes, the 00E5ESP®
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 on
again.
Deactivating/activating ESP ® Important safety notes
i Observe the "Important safety notes" sec-
tion (Y page 66).
You can select between the following states
of ESP ®
:
R ESP ®
is activated.
R ESP ®
is deactivated. G
WARNING
If you deactivate ESP ®
, ESP ®
no longer sta-
bilizes the vehicle. There is an increased risk
of skidding and an accident. 72
Driving safety systemsSafety

SmartKey functions
0043
0037 Locks the vehicle
0044 0054 Opens/closes the trunk lid
0087 0036 Unlocks the vehicle
X To unlock centrally: press button0087.
If you do not open the vehicle within
approximately 40 seconds of unlocking:
R the vehicle is locked again.
R protection against theft is reactivated.
X To lock centrally: press button0043.
The SmartKey centrally locks/unlocks: R the doors
R the trunk lid
R the fuel filler flap
The turn signals flash once when unlocking
and three times when locking.
You can also set an audible signal to confirm that the vehicle has been locked. The audiblesignal can be activated and deactivated via
COMAND or Audio 20 (see the separate oper-
ating instructions).
When the locator lighting is activated via
COMAND or Audio 20, it lights up when it is
dark after the vehicle is unlocked with the
remote control (see the separate operating
instructions).
X To open the trunk lid automatically
from outside the vehicle: press and hold
button 0044until the trunk lid opens.
X To open the trunk lid automatically
from outside the vehicle: if the SmartKeyis in close proximity to the vehicle: press
the
0054 button on the SmartKey.
You can release the button as soon as the
trunk lid starts to close. 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 0037button 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 are
touched
R during convenience closing SmartKey
81Opening and closing Z