check engine light MERCEDES-BENZ GLA 2016 Owners Manual

ATA (Anti-Theft Alarm system)
Activating/deactivating .................. .7 3
Function ........................................... 73
Switching off the alarm .................... 73
ATTENTION ASSIST
Activating/deactivating ................ .2 28
Display message ............................ 253
Function/notes ............................ .2 11
Audio 20
Driving dynamics display ............... 200
Audio menu (on-board computer) .... 225
Audio system
see separate operating instructions
Authorized Mercedes-Benz Center
see Qualified specialist workshop
Authorized workshop
see Qualified specialist workshop
AUTO lights
Display message ............................ 250
see Lights
Automatic car wash (care) ............... 314
Automatic engine start (ECO start/
stop function) .................................... 154
Automatic engine switch-off (ECO
start/stop function) .......................... 154
Automatic headlamp mode .............. 116
Automatic transmission
Accelerator pedal position ............. 163
Changing gear ............................... 163
DIRECT SELECT lever ..................... 159
Drive program ................................ 164
Drive program display .................... 159
Driving tips .................................... 163
DYNAMIC SELECT button (all vehi-
cles except Mercedes-AMG vehi-
cles) ............................................... 157
DYNAMIC SELECT controller
(Mercedes-AMG vehicles) .............. 158
Emergency running mode .............. 169
Engaging drive position .................. 161
Engaging neutral ............................ 160
Engaging park position
(Mercedes-AMG vehicles) .............. 162
Engaging park position automati-
cally ............................................... 160
Engaging reverse gear ................... 160
Engaging the park position ............ 159 Holding the vehicle stationary on
uphill gradients .............................. 163
Kickd own ....................................... 163
Ma nu
al shifting .............................. 166
Oil temperature (on-board com-
puter, Mercedes-AMG vehicles) ..... 231
Overview ........................................ 159
Problem (malfunction) ................... 169
Pulling away ................................... 152
Selector lever ................................ 161
Starting the engine ........................ 151
Steering wheel paddle shifters ...... 166
Transmission position display ........ 161
Transmission position display
(DIRECT SELECT lever) ................... 159
Transmission positions .................. 162
Automatic transmission emer-
gency mode ....................................... 169
B Backup lamp
Display message ............................ 249
Bag hook ............................................ 286
BAS (Brake Assist System) ................. 66
Basic settings
see Settings
Battery (SmartKey)
Checking .......................................... 80
Important safety notes .................... 79
Replacing ......................................... 80
Battery (vehicle)
Charging ........................................ 329
Display message ............................ 252
Important safety notes .................. 327
Jump starting ................................. 331
Belt
see Seat belts
Blind Spot Assist
Activating/deactivating (on-
board computer) ............................ 228
Display message ............................ 254
Notes/function .............................. 213
Blower
see Climate control
Brake Assist
see BAS (Brake Assist System) Index 5

On the front-passenger seat ............ 62
Rearward-facing restraint system ... .6 2
Top Tether ....................................... 61
Child-proof locks
Important safety notes .................... 63
Rear doors ....................................... 64
Children
Special seat belt retractor ............... 59
Cigarette lighter ................................ 291
Cleaning
Mirror turn signal ........................... 317
Climate control
Air-conditioning system ................. 133
Automatic climate control (dual-
zone) ............................................. .1 35
Controlling automatically .............. .1 39
Cooling with air dehumidification .. 138
Defrosting the windows ................. 142
Defrosting the windshield .............. 141
General notes ................................ 132
Indicator lamp ................................ 139
Information about using auto-
matic climate control ..................... 136
Maximum cooling .......................... 141
Notes on using the air-condition-
ing system ..................................... 134
Overview of systems ..................... .1 32
Problem with the rear window
defroster ........................................ 143
Problems with cooling with air
dehumidification ............................ 139
Refrigerant ..................................... 382
Refrigerant filling capacity ............. 383
Setting the air distribution ............. 140
Setting the air vents ..................... .1 44
Setting the airflow ......................... 140
Setting the temperature ................ 139
Switching air-recirculation mode
on/off ............................................ 143
Switching on/off ........................... 137
Switching residual heat on/off ...... 143
Switching the rear window
defroster on/off ............................ 142
Switching the ZONE function on/
off ................................................. .1 40
Co
ckpit
Overview .......................................... 30 Coffee cup symbol
see ATTENTION ASSIST
COLLISION PREVENTION ASSIST
PLUS
Activating/deactivating ................. 228
Display message ............................ 242
Operation/notes .............................. 66
COMAND
Driving dynamics display ............... 200
COMAND display
Cleaning ......................................... 318
Combination switch .......................... 118
Compass
Calibrating ..................................... 304
Calling up ....................................... 303
Magnetic field zone maps .............. 304
Setting ........................................... 304
Consumption statistics (on-board
computer) .......................................... 222
Convenience closing feature .............. 92
Convenience opening feature ............ 91
Coolant (engine)
Checking the level ......................... 311
Display message ............................ 251
Filling capacity ............................... 381
Important safety notes .................. 381
Temperature (on-board computer,
Mercedes-AMG vehicles) ............... 231
Temperature gauge ........................ 219
Warning lamp ................................. 275
Cooling
see Climate control
Copyright ............................................. 27
Cornering light function
Changing bulbs .............................. 123
Display message ............................ 248
Function/notes ............................. 119
Cover
see Roller sunblind
Crash-responsive emergency light-
ing ....................................................... 121
Cruise control
Activation conditions ..................... 184
Cruise control lever ....................... 184
Deactivating ................................... 185
Display message ............................ 257
Driving system ............................... 184 Index 7

Emergency
Automatic measures after an acci-
dent ................................................ .5 8
Emergency braking
see BAS (Brake Assist System)
Emergency release
Driver's door .................................... 84
Vehicle ............................................ .8 4
Emergency Tensioning Devices
Activation ........................................ .5 6
Emergency unlocking
Tailgate ............................................ 89
Engine
Check Engine warning lamp .......... .2 75
Display message ............................ 251
ECO start/stop function ................ 153
Engine number ............................... 377
Irregular running ............................ 156
Jump-starting ................................. 331
Starting (important safety notes) ... 151
Starting problems .......................... 156
Starting the engine with the
SmartKey ....................................... 151
Starting with the Start/Stop but-
ton ................................................. 152
Switching off .................................. 172
Tow-starting (vehicle) ..................... 337
Engine electronics
Problem (malfunction) ................... 156
Engine oil
Adding .......................................... .3 10
Additives ........................................ 380
Checking the oil level ..................... 309
Checking the oil level using the
dipstick .......................................... 310
Display message ............................ 252
Filling capacity ............................... 380
Notes about oil grades ................... 379
Notes on oil level/consumption .... 309
Temperature (on-board computer,
Mercedes-AMG vehicles) .............. .2 31
Viscosity .............. .......................... 380
E ng
ine, starting
see Starting (engine)
ESC (Electronic Stability Control)
see ESP ®
(Electronic Stability Program) ESP ®
(Electronic Stability Pro-
gram)
AMG menu (on-board computer) ... 232
Characteristics ................................. 69
Deactivating/activating (button
in Mercedes-AMG vehicles) ............. 70
Deactivating/activating (except
Mercedes ‑ AMG vehicles) ................. 70
Deactivating/activating (on-
board computer, except
Mercedes-AMG vehicles) .............. .2 27
Display message ............................ 236
Function/notes ................................ 69
General notes .................................. 69
Important safety information ........... 69
Trailer stabilization ........................... 72
Warning lamp ................................. 271
ETS/4ETS (Electronic Traction Sys-
tem) ...................................................... 69
Exhaust
see Exhaust pipe
Exhaust check ................................... 175
Exhaust pipe
Cleaning ......................................... 318
Exterior lighting
Cleaning ......................................... 317
see Lights
Exterior mirrors
Adjusting ....................................... 109
Dipping (automatic) ....................... 110
Folding in when locking (on-board
computer) ...................................... 231
Folding in/out (automatically) ....... 110
Folding in/out (electrically) ........... 109
Out of position (troubleshooting) ... 110
Storing settings (memory func-
tion) ............................................... 112
Storing the parking position .......... 111
Eyeglasses compartment ................. 281
F
Filler cap
see Refueling
Flat tire
MOExtended tires .......................... 323
Preparing the vehicle ..................... 322
TIREFIT kit ...................................... 32410
Index

Stowage compartments
Armrest (front) ............................... 282
Armrest (under) ............................. 282
Center console .............................. 281
Center console (rear) ..................... 282
Cup holders ................................... 288
Eyeglasses compartment ............... 281
Glove box ....................................... 281
Important safety information ......... 281
Map pockets .................................. 283
Stowage net ................................... 283
Under driver's seat/front-
passenger seat .............................. 282
Stowage net ....................................... 283
Summer tires ..................................... 342
Sun visor ............................................ 290
Suspension
Adaptive Damping System ............. 199
Suspension setting
AMG adaptive sport suspension
system ........................................... 196
Switching air-recirculation mode
on/off ................................................. 143
T
Tachometer ........................................ 219
Tail lamps
see Lights
Tailgate
Display message ............................ 263
Emergency unlocking ....................... 89
Important safety notes .................... 85
Limiting the opening angle ............... 89
Obstruction detection ...................... 86
Opening dimensions ...................... 383
Opening/closing (from outside) ....... 87
Opening/closing automatically
from inside ....................................... 88
Opening/closing automatically
from outside .................................... 87
Tank
see Fuel tank
Tank content
Fuel gauge ....................................... 31
Technical data
Capacities ...................................... 377
Information .................................... 374 Tires/wheels ................................. 367
Vehicle data ................................... 383
TELEAID
Call priority .................................... 296
Downloading destinations
(COMAND) ..................................... 296
Downloading routes ....................... 299
Emergency call .............................. 293
General notes ................................ 292
Geo fencing ................................... 300
Locating a stolen vehicle ............... 298
MB info call button ........................ 295
Remote vehicle locking .................. 298
Roadside Assistance button .......... 294
Search & Send ............................... 297
Self-test ......................................... 293
Speed alert .................................... 300
System .......................................... 292
Triggering the vehicle alarm ........... 300
Vehicle Health Check .................... 298
Vehicle remote unlocking .............. 297
Telephone
Accepting a call (multifunction
steering wheel) .............................. 226
Display message ............................ 264
Introduction ................................... 226
Menu (on-board computer) ............ 226
Number from the phone book ........ 226
Redialing ........................................ 227
Rejecting/ending a call ................. 226
Temperature
Coolant .......................................... 219
Coolant (on-board computer,
Mercedes-AMG vehicles) ............... 231
Engine oil (on-board computer,
Mercedes-AMG vehicles) ............... 231
Outside temperature ...................... 219
Setting ( climate control) ................ 139
T
ransmission oil (on-board com-
puter, Mercedes-AMG vehicles) ..... 231
Through-loading feature ................... 283
Timing (RACETIMER) ......................... 232
Tire pressure
Calling up (on-board computer) ..... 348
Checking manually ........................ 347
Display message ............................ 258
Maximum ....................................... 346
Not reached (TIREFIT) .................... 32618
Index

See "Children in the vehicle" for information
on infants and children traveling with you in
the vehicle restraint systems for infants and
children ( Y
page 58).
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-MERCedes (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 u restraint system warning lamp in
the instrument cluster lights up when the igni-
tion is switched on. It goes out no later than a
few seconds after the vehicle is started. The
components of the restraint system are in
operational readiness.
A malfunction has occurred if the u
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 C
and PASSENGER AIR BAG OFF indicator
lamp D are 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 lights 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 lights up: the
front-passenger front air bag is deactiva-
ted. It will then not be deployed in the event
of an accident.Occupant safety 43
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.
When 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 operating instruc-
tions).
You can also set an audible signal to confirm
that the vehicle has been locked. The audible
signal can be activated and deactivated using
the on-board computer ( Y
page 230).X
To open the tailgate automatically from
outside the vehicle: press and hold button
T until the tailgate opens ( Y
page 87).
Vehicles with KEYLESS-GO or KEYLESS-
GO start function: X
To close the tailgate automatically from
outside the vehicle: if the key is located in
the immediate vicinity of the vehicle, press
the T button on the key ( Y
page 87).
When the tailgate closes you can then
release the button.
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 and unlocking
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 7 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 are
touched 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 C or D .
Make sure that you do not touch the inner
surface of the door handle. X
Convenience closing feature: touch
recessed sensor surface D for an exten-
ded period.
Further information on the convenience
closing feature ( Y
page 92).SmartKey 77
Opening and closing Z

X
To unlock the tailgate: pull tailgate han-
dle C .
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 7 button on
the SmartKey twice in rapid succession.
The battery check lamp of the SmartKey
flashes twice briefly and lights up once,
then KEYLESS-GO is deactivated
( Y
page 80). X
To activate: press any button on the
SmartKey.
or X
Insert the SmartKey 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
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 door
and 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: press and hold the
6 and 7 buttons simultaneously for
approximately six seconds until the battery
indicator lamp flashes twice ( Y
page 80).
If the setting of the locking system is changed
within the signal range of the vehicle, press-
ing the 7 or 6 button: R
locks or R
unlocks the vehicle
The SmartKey now functions as follows: X
To unlock: press the 6 button once.X
To unlock centrally: press the 6 but-
ton twice. X
To lock centrally: press the 7 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: press
and hold the 6 and 7 buttons simul-
taneously for app roximately six seconds
u
ntil the battery check lamp flashes twice
( Y
page 80).78
SmartKey
Opening and closing

Problem
Possible causes/consequences and P Solutions
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 ( Y
page 84) or lock ( Y
page 85) 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 329).
or X
Jump-start the vehicle ( Y
page 331).
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 ( Y
page 80) and replace it if nec-
essary ( Y
page 80).
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.82
SmartKey
Opening and closing

adjusted using COMAND or Audio 20 (see the
separate Operator's Manual).
Manual interior lighting control X
To switch the front interior lighting on:
set the switch to the J position.X
To switch the front interior lighting off:
set the switch to the 3 position or (if the
door is closed) to the center position. X
To switch the rear interior lighting on or
off: press the B button.X
To switch the reading lamp on or off:
press the = button.
Crash-responsive emergency lighting The interior lighting is activated automatically
if the vehicle is involved in an accident. X
To switch off the crash-responsive
emergency lighting: press the hazard
warning lamp button.
or X
Lock and then unlock the vehicle using the
SmartKey.
Replacing bulbs
Important safety notes
Xenon bulbs
G DANGER
Xenon bulbs carry a high voltage. You can get
an electr ic shock if you remove the cover of
the Xenon bulb and touch the electrical con-
tacts. There is a risk of fatal injury.
Never touch the parts or the electrical con-
tacts of the Xenon bulb. Alwa ys have work on
the Xenon bulbs carried out at a qualif ied spe-
cialist worksho p.
If your vehicle is equipped with Xenon bulbs,
you can recognize this by the following: the
cone of light from the Xenon bulbs moves
from the top to the bottom and back again when you start the engine. For this to be
observed, the lights must be switched on
before starting the engine.
Bulbs and lamps are an important aspect of
vehicle safety. You must therefore make sure
that these function correctly at all times.
Have the headlamp setting checked regularly.
Other bulbs
G WARNING
Bulbs, lamps and connectors can get very hot
when operating. If you change a bulb, you
could burn yourself on these components.
There is a risk of injury.
Allow these components to cool down before
changing a bulb.
Do not use a bulb that has been dropped or if
its glass tube has been scratched.
The bulb may explode if: R
you touch it R
it is hot R
you drop it R
you scratch it
Only operate bulbs in enclosed lamps
designed for that purpose. Only install spare
bulbs of the same type and the specified volt-
age.
Marks on the glass tube reduce the service
life of the bulbs. Do not touch the glass tube
with your bare hands. If necessary, clean the
glass tube when cold with alcohol or spirit and
rub it off with a lint-free cloth.
Protect bulbs from moisture during opera-
tion. Do not allow bulbs to come into contact
with liquids.
There are bulbs other than the Xenon bulbs
that you cannot replace. Only replace the
bulbs listed ( Y
page 122). Have the bulbs that
you cannot replace yourself changed at a
qualified specialist workshop.
If you require assistance replacing bulbs, con-
sult a qualified specialist workshop.
If the new bulb still does not light up, consult
a qualified specialist workshop. Replacing bulbs 121
Lights and windshield wipers Z

Problem
Possible causes/consequences and P Solutions
The engine is not run-
ning smoothly and is
misfiring. There is a malfunction in the engine electronics or in a mechanical
component of the engine management system. X
Only depress the accelerator pedal slightly.
Otherwise, non-combusted fuel may get into the catalytic con-
verter and damage it. X
Have the cause rectified immediately at a qualified specialist
workshop.
The coolant tempera-
ture gauge shows a
value above 248 ‡
(120 †). The coolant
warning lamp may also
be on and a warning
tone may sound. The coolant level is too low. The coolant is too hot and the engine
is no longer being cooled sufficiently. X
Stop as soon as possible and allow the engine and the coolant to
cool down. X
Check the coolant level ( Y
page 311). Observe the warning
notes as you do so and add coolant if necessary.
DYNAMIC SELECT button (all vehicles
except Mercedes-AMG vehicles)
Use the DYNAMIC SELECT button to change
the drive program. Depending on the drive
program selected the following vehicle char-
acteristics will change: R
the drive (engine and transmission man-
agement) R
the steering R
the availability of the ECO start/stop func-
tion R
the climate control:
Each time you start the engine with the
SmartKey or the Start/Stop button, drive pro-
gram C is activated. For further information
about starting the engine, see ( Y
page 151). X
Press DYNAMIC SELECT button C as many
times as necessary until the desired drive
program is selected.
The selected drive program appears in the
multifunction display. After five seconds
the display goes out and the status icon of
the selected drive program appears.
In addition, the current drive program set-
tings are displayed briefly in the Audio 20 or
COMAND display.
i In a few countries, the ECO start/stop
function is deactivated at the factory due to
the available fuel grade. In this case, the
ECO start/stop function is not available in
any drive program, regardless of the display
in the Audio 20 or COMAND display.DYNAMIC SELECT button (all vehicles except Mercedes-AMG vehicles) 157
Driving and parking Z