check engine light MERCEDES-BENZ A-CLASS HATCHBACK 2015 Owners Manual

Convenience opening/closing (air-
recirculation mode) ...........................146
Coolant (engine)
Checking the level ......................... 326
Display message ............................ 275
Important safety notes .................. 402
Temperature (on-board computer, Mercedes-AMG vehicles) .............. .254
Temperature gauge ........................ 239
Warning lamp ................................. 301
Cooling
see Climate control
Copyright ............................................. 26
Crash-responsive emergency light-
ing ....................................................... 125
Cruise control
Activation conditions ..................... 193
Cruise control lever ....................... 192
Deactivating ................................... 194
Display message ............................ 281
Driving system ............................... 191
Important safety notes .................. 192
LIM indicator lamp ......................... 192
Selecting ........................................ 192
Setting a speed .............................. 193
Storing and maintaining current
speed ............................................. 193
Cup holder
Centre console .............................. 314
Important safety notes .................. 313
Rear compartment ......................... 314 D
Dashboard see Instrument cluster
Data
see Technical data
Daytime driving lights
Display message ............................ 273
Function/notes ............................ .120
Switching on/off (on-board com-
puter) ............................................. 251
Dealership
see Qualified specialist workshop
Declarations of conformity ................. 23
Diagnostics connection ......................24
Diesel .................................................. 399 Digital speedometer
.........................243
Dipped-beam headlamps
Changing bulbs .............................. 127
Display message ............................ 271
Setting for driving abroad (sym-
metrical) ........................................ 120
Switching on/off ........................... 121
DIRECT SELECT lever
Automatic transmission ................. 169
Display message
Driving systems ............................ .278
Display messages
ASSYST PLUS ................................ 327
Calling up (on-board computer) ..... 257
Engine ............................................ 275
General information ....................... 257
Hiding (on-board computer) ........... 257
Key ................................................ 291
Lights ............................................. 271
Safety systems .............................. 258
Tyres .............................................. 283
Vehicle .......................................... .285
Distance warning function
Function/notes ................................ 71
Warning lamp ................................. 303
Distance warning signal (warning
lamp) ................................................. .303
DISTRONIC PLUS
Activation conditions ..................... 198
Cruise control lever ....................... 198
Deactivating ................................... 201
Display message ............................ 280
Displays in the multifunction dis-
play ................................................ 202
Driving tips ................................... .203
Function/notes ............................ .196
Important safety notes .................. 197
Selecting ........................................ 198
Setting the specified minimum
distance ......................................... 201
Stopping ........................................ 199
Door
Automatic locking (on-board com-puter) ............................................. 251
Automatic locking (switch) .............. .91
Central locking/unlocking (key) ...... 83
Control panel .................................. .37
Display message ............................ 289 8
Index

ECO start/stop function
Automatic engine start .................. 163
Automatic engine switch-off .......... 162
Deactivating/activating ................ .163
General information ....................... 162
Important safety notes .................. 162
Introduction ................................... 162
Electromagnetic compatibility
Declaration of conformity ................ 23
Electronic Stability Program
see ESP ®
(Electronic Stability Program)
Emergency
Automatic measures after an acci-
dent ................................................. 57
Emergency key
Unlocking the driver's door .............. 91
Emergency key element
Function/notes ................................ 85
Inserting .......................................... 85
Locking vehicle ................................ 92
Removing ......................................... 85
Emergency release
Driver's door ................................... .91
Emergency spare wheel
General notes ................................ 390
Important safety notes .................. 389
Removing ...................................... .390
Technical data ............................... 392
Emergency unlocking
Tailgate ............................................ 93
Vehicle ............................................. 91
Engine
Display message ............................ 275
ECO start/stop function ................ 162
Engine number ............................... 396
Jump-starting ................................. 348
Running irregularl y......................... 165
Starting (important safety notes )... 159
Starting problems .......................... 165
Starting the engine with the key .... 160
Starting with the Start/Stop but-
ton ................................................. 160
Stopping ........................................ 184
Tow-starting (vehicle) ..................... 354
Warning lamp (engine diagnos-
tics) ............................................... 301
Engine electronics
Notes ............................................. 394 Problem (fault) ............................... 165
Engine jump starting
see Jump starting (engine)
Engine oil
Additives ........................................ 401
Checking the oil level ..................... 324
Checking the oil level using the
dipstick .......................................... 324
Display message ............................ 276
Filling capacity ............................... 401
Notes about oil grade s................... 400
Notes on oil level/consumption .... 324
Temperature (on-board computer, Mercedes-AMG vehicles) ............... 254
Topping up ..................................... 325
Viscosity ........................................ 402
Environmental protection
Returning an end-of-life vehicle ....... 22
ESP ®
(Electronic Stability Pro-
gram)
AMG menu (on-board computer) ... 254
Characteristics ................................. 74
Deactivating/activating (button
in Mercedes-AMG vehicles) ............. 75
Deactivating/activating (except
Mercedes‑ AMG vehicles) ................. 74
Deactivating/activating (on-
board computer, except
Mercedes-AMG vehicles) ............... 248
Display message ............................ 258
Function/note s................................ 73
General notes .................................. 73
Important safety guidelines ............. 73
Trailer stabilisation .......................... 76
Warning lamp ................................. 297
ETS/4ETS (Electronic Traction Sys-
tem) ...................................................... 73
Exhaust
see Exhaust pipe
Exhaust pipe
Cleaning ......................................... 333
Exterior lighting
Cleaning ......................................... 332
see Lights
Exterior mirrors
Adjusting ....................................... 113
Anti-dazzle mode (automatic) ........ 114 10
Index

H
Hazard warning lamps Display message ............................ 291
Switching on/off ........................... 123
Head restraints
Adjusting ....................................... 109
Adjusting (manually) ...................... 109
Adjusting (rear) .............................. 110
Fitting/removing (rear) .................. 110
Headlamp
Cleaning system (notes) ............... .403
Headlamp flasher .............................. 123
Headlamps
Misting up ...................................... 124
see Automatic headlamp mode
Heating
see Climate control
High-pressure cleaners .................... 330
Hill start assist .................................. 161
HOLD function
Activating ....................................... 205
Deactivating ................................... 205
Display message ............................ 278
Function/notes ............................ .204
Horn ...................................................... 28 I
Ignition lock see Key positions
Immobiliser .......................................... 77
Indicator and warning lamp
Restraint system ............................ 300
Indicator and warning lamps
COLLISION PREVENTION ASSIST
PLUS .............................................. 303
Coolant .......................................... 301
Engine diagnostics ......................... 301
SPORT handling mode ................... 298
Indicator lamps
Display message ............................ 272
see Warning and indicator lamps
Indicators
see Turn signals
Instrument cluster
Overview .......................................... 30
Settings ......................................... 250 Warning and indicator lamps ........... 31
Instrument cluster lighting .............. 238
Interior lighting
Control .......................................... .125
Emergency lighting ........................ 125
Overview ........................................ 124
Reading lamp ................................. 124
Interior motion sensor
Deactivating ..................................... 80
Function .......................................... .79
Priming ............................................ 79
Switching off .................................... 79
ISOFIX child seat securing system ....59 J
Jack Storage location ............................3 39
Using ............................................. 369
Jump starting (engine) ......................348 K
Key Changing the battery ....................... 86
Checking the battery ....................... 86
Convenience closing feature ............ 95
Convenience opening feature .......... 95
Display message ............................ 291
Door central locking/unlocking ....... 83
Emergency key element ................... 85
Important safety notes .................... 82
KEYLESS-GO start function .............. 84
Loss ................................................. 87
Modifying the programming ............. 84
Positions (ignition lock) ................. 157
Problem (malfunction) ..................... 87
Starting the engine ........................ 160
Key positions
Start/Stop button .......................... 157
Key positions (ignition lock) ............ 157
KEYLESS-GO
Convenience closing ........................ 95
Deactivation ..................................... 83
Locking ............................................ 83
Unlocking ......................................... 83
Kickdown
Driving tips ................................... .174 12
Index

Transmission oil (on-board com-
puter, Mercedes-AMG vehicles) ..... 254
TEMPOMAT
Function/notes ............................. 191
Through-loading ................................ 309
Timing (RACETIMER) .........................254
TIREFIT kit .......................................... 341
Tyre pressure not reached ............. 343
Tyre pressure reached ................... 343
Top Tether ............................................ 60
Total distance recorder .................... 242
Tow-away protection
Activating ......................................... 78
Deactivating ..................................... 79
Function .......................................... .78
Tow-starting
Emergency engine starting ............ 354
Fitting the towing eye .................... 352
Important safety notes .................. 350
Removing the towing eye ............... 352
Towing
Important safety notes .................. 350
Notes for 4MATIC vehicles ............ 354
Transporting the vehicle ................ 353
Towing a trailer
Active Parking Assist ..................... 212
Axle load, permissibl e.................... 406
ESP ®
(Electronic Stability Pro-
gram) ............................................... 76
Failure check for LEDs ................... 234
General notes ................................ 231
Pulling away with a traile r.............. 161
Trailer tow hitch display message .. 289
Towing away
Fitting the towing ey e.................... 352
Removing the towing eye ............... 352
With both axles on the ground ....... 353
With front axle raised ..................... 352
Towing eye ......................................... 339
Traffic Sign Assist
Activating ....................................... 224
Activating/deactivating the warn- ing function .................................... 248
Display message ............................ 280
Function/note s............................. 223
Important safety notes .................. 224
Instrument cluster display ............. 224 Trailer coupling
see Towing a trailer
Trailer towing
7-pin connecto r............................. 234
Blind Spot Assist ............................ 228
Cleaning the trailer tow hitch ......... 333
Coupling up a traile r...................... 233
Decoupling a trailer ....................... 233
Driving tips .................................... 231
Folding in the ball coupling ............ 233
Folding out the ball coupling .......... 232
Important safety notes .................. 229
Lights display message .................. 271
Mounting dimensions .................... 405
Power supply ................................. 234
Trailer load s................................... 406
Transmission
see Automatic transmission
see Manual transmission
Transmission position display
(DIRECT SELECT lever) ...................... 170
Transporting the vehicle .................. 353
Trim pieces (cleaning instruc-
tions) .................................................. 335
Trip computer (on-board com-
puter) .................................................. 242
Trip meter
Calling up ....................................... 242
Resetting (on-board computer) ...... 243
Turn signals
Changing bulbs (front) ................... 128
Changing bulbs (rear) .................... 128
Switching on/of f........................... 122
TV
Operating (on-board computer) ..... 246
see Separate operating instructions
Two-way radio
Frequencies ................................... 394
Installation ..................................... 394
Transmission output (maximum) .... 394
Type identification plate
see Vehicle identification plate
Tyre pressure
Calling up (on-board computer) ..... 364
Display message ............................ 283
Not reached (TIREFIT) .................... 343
Reached (TIREFIT) .......................... 343
Recommended ............................... 362 Index
19

For more information about children travel-
ling with you in the vehicle, see "Children in
the vehicle" (Y page 57). Important safety notes
G
WARNING
If the restraint system is modified, it may no
longer work as intended. The restraint system
may then not perform its intended protective function by failing in an accident or triggering
unexpectedly, for example. There is an
increased risk of injury, possibly even fatal.
Never modify parts of the restraint system. Do not attempt to modify the wiring as well as
electronic components or their software.
If it is necessary to modify an airbag system to
accommodate a person with disabilities, con- tact a Mercedes-Benz Service Centre for
details. 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 6 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 vehicle is started. The
components of the restraint system are in
operational readiness.
A malfunction has occurred if the 6
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 the restraint system is malfunctioning,
restraint system components may be trig-
gered unintentionally or might not be trig-
gered at all in the event of an accident with a high rate of vehicle deceleration. This can
effect belt tensioners or airbags, for example. There is an increased risk of serious or even
fatal injuries.
Have the restraint system checked and
repaired immediately at a qualified specialist
workshop. PASSENGER AIRBAG indicator lamp
PASSENGER AIR BAG ON indicator lamp
:
and PASSENGER AIR BAG OFF indicator
lamp ;are part of the automatic deactiva-
tion system of the front-passenger front air-
bag.
The indicator lamps display the status of the
front-passenger front airbag.
R PASSENGER AIR BAG ON lights up: the
front-passenger front airbag is enabled. If,
in the event of an accident, all deployment
criteria are met, the front-passenger front
airbag is deployed.
R PASSENGER AIR BAG OFF lights up: the
front-passenger front airbag is disabled. It
will then not be deployed in the event of an
accident. Occupant safety
41Safety Z

G
WARNING
If ESP ®
is malfunctioning, ESP ®
is unable to
stabilise the vehicle. In addition, other driving
safety systems are switched off. This increa-
ses the risk of skidding and an accident.
Drive on carefully. Have ESP ®
checked at a
qualified specialist workshop.
Vehicles without 4MATIC: when towing
away your vehicle with the front axle raised,
please observe the notes on ESP ®
(Y page 352).
If the å ESP®
OFF warning lamp lights up
continuously, ESP ®
is deactivated.
If the ÷ ESP®
warning lamp and the å
warning lamp are lit continuously, ESP ®
is not
available due to a malfunction.
Observe the information on warning lamps
(Y page 297) and display messages which
may be shown in the instrument cluster
(Y page 258).
Only use wheels with the recommended tyre
sizes. Only then will ESP ®
function properly.
Characteristics of ESP ®General notes
If the
÷ ESP warning lamp goes out before
beginning the journey, ESP ®
is automatically
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 When pulling away, only depress the accel-
erator pedal as far as is necessary.
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 if the vehicle stops
moving. When pulling away again, the engine starts automatically. ESP
®
remains in its pre-
viously selected status. Example:if ESP®
was deactivated before the engine was
switched off, ESP ®
remains deactivated when
the engine is switched on again.
Deactivating/activating ESP ®
(except
Mercedes‑AMG vehicles) Important safety notes
You can select between the following sta-
tuses of ESP ®
:
R ESP ®
is activated
R ESP ®
is deactivated G
WARNING
If you deactivate ESP ®
, ESP ®
no longer sta-
bilises 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
i Activate ESP ®
as soon as the situations
described above no longer apply. ESP ®
will
otherwise not be able to stabilise the vehi-
cle if the vehicle starts to skid or a wheel
starts to spin.
Deactivating/activating ESP ®
You can deactivate or activate ESP ®
via the
on-board computer (Y page 248).
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. 74
Driving safety systemsSafety

opened from the inside. Switch off the alarm
(Y page 78). G
WARNING
If persons (particularly children) are exposed
to heat or cold for a prolonged period, there is a risk of serious or even fatal injuries. Never
leave persons (particularly children) unatten-
ded in the vehicle. Key functions
:
& Locks the vehicle
; % Unlocks the vehicle
X To unlock centrally: press the%but-
ton.
If you do not open the vehicle within
approximately 40 seconds of unlocking:
R the vehicle locks again
R protection against theft is reactivated
X To lock: press the &button.
The key centrally locks/unlocks: R the doors
R the tailgate
R the fuel filler flap
When unlocking, the turn signals flash once.
When locking, they flash three times.
When the locator lighting is activated in Audio
20/COMAND Online, it lights up when it is
dark after the vehicle is unlocked with the
remote control (see separate operating
instructions). You can also set an audible signal to confirm
that the vehicle has been locked. The audiblesignal can be activated or deactivated using
the on-board computer (Y page 252). KEYLESS-GO
General notes Bear in mind that the engine can be started by
any of the vehicle occupants if there is a key
in the vehicle.
Locking and unlocking You can start, lock or unlock the vehicle using
KEYLESS-GO. To do this, you need to carry
the key with you. You can combine the KEY-
LESS-GO functions with the functions of a
conventional key. Unlock the vehicle by using
KEYLESS-GO, for instance, and lock it using
the & button on the key.
The driver's door and the door at which the
handle is used must both be closed. The key
must be outside the vehicle. When locking or unlocking with KEYLESS-GO, the distance
between the key and the corresponding door
handle must not be greater than 1 m.
A check which periodically establishes a radio connection between the vehicle and the key
determines whether a valid key is in the vehi-
cle. This occurs, for example:
R when starting the engine
R whilst driving
R when the external door handles are
touched
R during convenience closing Key
83Opening and closing Z

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.
For further information on the convenience closing feature (Y page 95).X
To unlock the tailgate: pull tailgate han-
dle :.
Deactivating and activating If you do not intend to use the vehicle for an
extended period of time, you can deactivate
KEYLESS-GO. The key will then use very little power, thereby conserving battery power. For
the purposes of activation or deactivation,
the vehicle does not have to be nearby. X
To deactivate: press the&button on
the key twice in rapid succession.
The battery check lamp of the key flashes
twice briefly and lights up once, then KEY-
LESS-GO is deactivated (Y page 86).
X To activate: press any button on the key.
or
X Insert the key into the ignition lock.
KEYLESS-GO and all of its associated fea-
tures are available again. KEYLESS-GO start function
General notes Bear in mind that the engine can be started by
any of the vehicle occupants if there is a key
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 door and the fuel filler flap are unlocked when the
vehicle is unlocked. This is useful if you fre-
quently travel alone.
X To change the setting: press and hold
down the %and& buttons simulta-
neously for about six seconds until the bat-
tery indicator lamp flashes twice
(Y page 86).
If the setting of the locking system is changed
within the signal range of the vehicle, press-
ing the &or% button:
R locks or
R unlocks the vehicle
The key now functions as follows:
X To unlock: press the%button once.
X To unlock centrally: press the%but-
ton twice.
X To lock centrally: press the&button. 84
KeyOpening and closing

Problem
Possible causes/consequences and
M
MSolutions There is a fault with KEYLESS-GO.
X Lock/unlock the vehicle using the remote control function of
the key.
X Have the vehicle and key checked at a qualified specialist work-
shop.
If the vehicle can also not be locked/unlocked using the remote
control function:
X Lock (Y page 91) or unlock (Y page 92) the vehicle using the
emergency key element.
X Have the vehicle and key checked at a qualified specialist work-
shop. The engine cannot be
started using the key. the on-board voltage is too low
X Switch off non-essential consumers, e.g. seat heating or interior
lighting, and try to start the engine again.
If this does not work: X Check the starter battery and charge it if necessary
(Y page 347).
or
X Jump-start the vehicle (Y page 348).
or
X Consult a qualified specialist workshop. The engine cannot be
started using the Start/
Stop button. The key is
in the vehicle. The vehicle is locked.
X Unlock the vehicle and try to start the vehicle again. The key battery is discharged or nearly discharged.
X Check the key battery (Y page 86) and replace it if necessary
(Y page 86).
If this does not work: X Start your vehicle with the key in the ignition lock. There is interference from a powerful source of radio waves.
X Start your vehicle with the key in the ignition lock. 88
KeyOpening and closing

Useful information
i This Owner's Manual describes all mod-
els, series and optional equipment for your
vehicle that were available at the time of
going to press. National variations are pos- sible. Note that your vehicle may not be
equipped with all of the functions descri-
bed. This is also the case for systems and
functions relevant to safety.
i Read the information on qualified special-
ist workshops: (Y page 24). Correct driver's seat position
G
WARNING
You could lose control of the vehicle while
driving if you:
R adjust the driver's seat, 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 mirrors and fasten your seat
belt before starting the engine. X
Observe the safety notes on seat adjust-
ment (Y page 107).
X Make sure that seat =is correctly adjus-
ted.
Manual seat adjustment (Y page 108)
Electrical seat adjustment (Y page 109)
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 angle so that your
thighs are gently supported
R you can depress the pedals properly
X Check whether the head restraint is adjus-
ted correctly (Y page 109).
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
centre of the head restraint.
X Observe the safety notes on steering col-
umn adjustment (Y page 112).
X Make sure that steering wheel :is adjus-
ted correctly.
Adjusts the steering wheel (Y page 112)
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 42).
X Check whether you have fastened seat
belt ;properly (Y page 44).106
Correct driver's seat positionSeats, steering wheel and mirrors