check engine light MERCEDES-BENZ GLK-CLASS SUV 2015 Owners Manual

Resetting the service interval dis-
play ................................................ 305
Service message ............................ 304
Special service requirements ......... 305
ATA (Anti-Theft Alarm system)
Activating/deactivating ................... 75
Function ........................................... 75
Switching off the alarm .................... 75
ATTENTION ASSIST
Activating/deactivating ................. 229
Display message ............................ 250
Function/notes ............................. 202
Audio menu (on-board com-
puter) .................................................. 2 26
Audio system
see separate operating instructions
Authorized Mercedes-Benz Center
see Qualified specialist workshop
Authorized workshop
see Qualified specialist workshop
AUTO lights
Display message ............................ 246
see Lights
Automatic car wash (care) ............... 306
Automatic engine start (ECO start/
stop function) .................................... 153
Automatic engine switch-off (ECO
start/stop function) .......................... 153
Automatic headlamp mode .............. 116
Automatic transmission
Accelerator pedal position ............. 159
Automatic drive program ............... 160
Changing gear ............................... 159
DIRECT SELECT lever ..................... 156
Display message ............................ 257
Driving tips .................................... 159
Emergency running mode .............. 162
Engaging drive position .................. 158
Engaging neutral ............................ 157
Engaging park position automati-
cally .............................................. . 157
Engaging reverse gear ................... 157
Engaging the park position ............ 157
Kickdown ....................................... 159
Manual drive program .................... 160
Overview ........................................ 156
Problem (malfunction) ................... 162 Program selector button ................ 159
Pulling away ................................... 152
Starting the engine ........................ 151
Steering wheel paddle shifters ...... 160
Trailer towing ................................. 159
Transmission position display ........ 157
Transmission positions .................. 158
Automatic transmission emer-
gency mode ....................................... 162
B
Backup lamp
Changing bulbs .............................. 125
Display message ............................ 245
Bag hook ............................................ 278
Ball coupling
Installing ........................................ 21 4
Removing ....................................... 217
Storing ........................................... 2 17
BAS (Brake Assist System) ................. 69
BAS PLUS (Brake Assist System
PLUS) ................................................... . 69
Battery (SmartKey)
Checking .......................................... 81
Important safety notes .................... 81
Replacing ......................................... 8 1
Battery (vehicle)
Charging ........................................ 321
Display message ............................ 248
Important safety notes .................. 319
Jump starting ................................. 323
Belt
see Seat belts
Belt force limiter
Activation ......................................... 60
Function ........................................... 60
Blind Spot Assist
Activating/deactivating ................. 229
Display message ............................ 252
Notes/function .............................. 203
Trailer towing ................................. 205
see Active Blind Spot Assist
BlueTEC (DEF) .................................... 376
BlueTEC ®
Adding DEF .................................... 165
Brake Assist
see BAS (Brake Assist System)
Index5

ChildrenRestraint systems ............................ 61
Special seat belt retractor ............... 64
Cigarette lighter ................................ 284
Cleaning
Mirror turn signal ........................... 309
Trailer tow hitch ............................. 310
Climate control
Automatic climate control (3-
zone) .............................................. 136
Controlling automatically ............... 139
Cooling with air dehumidification .. 137
Defrosting the windows ................. 142
Defrosting the windshield .............. 141
Dual-zone automatic climate con-
trol ............................................... .. 133
Important safety notes .................. 132
Indicator lamp ................................ 139
Information about using auto-
matic climate control ..................... 137
Information about using dual-zone
automatic climate control .............. 134
Maximum cooling .......................... 142
Overview of systems ...................... 132
Problem with the rear window
defroster ........................................ 143
Problems with cooling with air
dehumidification ............................ 139
Rear control panel ......................... 136
Refrigerant ..................................... 379
Refrigerant filling capacity ............. 380
Setting the air distribution ............. 140
Setting the air vents ...................... 144
Setting the airflow ......................... 141
Setting the climate mode (AIR
FLOW) ............................................ 139
Setting the temperature ................ 140
Switching air-recirculation mode
on/off ............................................ 1 43
Switching on/off ........................... 137
Switching residual heat on/off ...... 143
Switching the rear window
defroster on/off ............................ 142
Switching the ZONE function on/
off ................................................ .. 141
Coat hooks ......................................... 280
Cockpit
Overview .......................................... 32 see Instrument cluster
Collapsible spare wheel
Inflating ......................................... 3 67
see Emergency spare wheel
COMAND
see separate operating instructions
Combination switch .......................... 118
Consumption statistics (on-board
computer) .......................................... 223
Convenience closing feature .............. 93
Convenience opening feature ............ 93
Coolant (engine)
Checking the level ......................... 303
Display message ............................ 246
Filling capacity ............................... 379
Important safety notes .................. 378
Temperature gauge ........................ 220
Warning lamp ................................. 268
Cooling
see Climate control
Copyright ............................................. 29
Cornering light function
Changing bulbs .............................. 124
Display message ............................ 243
Function/notes ............................. 120
Crash-responsive emergency light-
ing ................................................... .... 122
Cruise control
Cruise control lever ....................... 175
Deactivating ................................... 176
Display message ............................ 254
Driving system ............................... 175
Function/notes ............................. 175
Important safety notes .................. 175
Setting a speed .............................. 176
Storing and maintaining current
speed ............................................. 17 5
Cup holder
Center console .............................. 282
Important safety notes .................. 282
Rear compartment ......................... 282
Customer Assistance Center
(CAC) ................................................... .. 27
Customer Relations Department ....... 27
Index7

Engine jump startingsee Jump starting (engine)
Engine oil
Adding ........................................... 30 2
Additives ........................................ 377
Checking the oil level ..................... 301
Checking the oil level using the
dipstick .......................................... 30 1
Display message ............................ 248
Filling capacity ............................... 377
Notes about oil grades ................... 377
Notes on oil level/consumption .... 301
Viscosity ........................................ 377
ESP ®
(Electronic Stability Pro-
gram)
Deactivating/activating ................... 71
Display message ............................ 236
ETS/4ETS ........................................ 70
Function/notes ................................ 70
General notes .................................. 70
Important safety information ........... 71
Trailer stabilization ........................... 72
Warning lamp ................................. 264
ETS/4ETS (Electronic Traction Sys-
tem) ................................................... ... 70
Exhaust check ................................... 170
Exhaust tail pipe (cleaning instruc-
tions) .................................................. 3 09
Exterior lighting
Setting options .............................. 116
see Lights
Exterior mirrors
Adjusting ....................................... 109
Dipping (automatic) ....................... 110
Folding in when locking (on-boardcomputer) ...................................... 233
Folding in/out (automatically) ....... 110
Folding in/out (electrically) ........... 110
Out of position (troubleshooting) ... 110
Setting ........................................... 1 10
Storing settings (memory func-
tion) .............................................. . 112
Storing the parking position .......... 111
F
Filler cap
see Fuel filler flap Flat tire
MOExtended tires .......................... 315
Preparing the vehicle ..................... 314
TIREFIT kit ...................................... 316
see Emergency spare wheel
Floormats ........................................... 298
Fog lamps
Switching on/off ........................... 117
Folding the rear bench seat for-
wards/back ....................................... 276
Fording
On flooded roads ........................... 174
Front fog lamps
Switching on/off ........................... 117
Fuel
Additives ........................................ 375
Consumption statistics .................. 223
Displaying the current consump-
tion ............................................... . 224
Displaying the range ...................... 224
Driving tips .................................... 170
Fuel gauge ....................................... 33
Grade (gasoline) ............................ 374
Important safety notes .................. 373
Premium-grade unleaded gaso-
line ............................................... .. 374
Problem (malfunction) ................... 165
Quality (diesel) ............................... 375
Refueling ........................................ 16 2
Tank content/reserve fuel ............. 374
Fuel filler flap
Opening ......................................... 164
Fuel filter (display message) ............ 249
Fuel level
Calling up the range (on-board
computer) ...................................... 224
Fuel tank
Capacity ........................................ 374
Problem (malfunction) ................... 165
Fuse allocation chart (vehicle tool
kit) ................................................... ... 314
Fuses
Allocation chart ............................. 328
Before changing ............................. 328
Dashboard fuse box ....................... 328
Fuse box in the cargo compart-
ment .............................................. 3 29
10Index

Selecting the unit of measure-
ment .............................................. 230
see Instrument cluster
SRS (Supplemental Restraint Sys-
tem)
Display message ............................ 239
Introduction ..................................... 43
Warning lamp ................................. 266
Warning lamp (function) ................... 43
Standing lamps
Changing bulbs .............................. 124
Display message ............................ 245
Switching on/off ........................... 118
Start/stop function
see ECO start/stop function
Starting (engine) ................................ 151
Steering (display message) .............. 258
Steering wheel
Adjusting (electrically) ................... 107
Adjusting (manually) ...................... 106
Button overview ............................... 35
Buttons (on-board computer) ......... 221
Cleaning ......................................... 31 1
Important safety notes .................. 106
Paddle shifters ............................... 160
Steering wheel heating .................. 107
Storing settings (memory func-
tion) .............................................. . 112
Steering wheel heating
Problem (malfunction) ................... 108
Switching on/off ........................... 107
Steering wheel paddle shifters ........ 160
Stowage areas ................................... 275
Stowage compartments
Armrest (under) ............................. 275
Cup holders ................................... 282
Glove box ....................................... 275
Important safety information ......... 275
Rear ............................................... 276
Stowage net ................................... 276
Stowage net ....................................... 276
Summer tires ..................................... 334
Sun visor ............................................ 283
Surround lighting (on-board com-
puter) .................................................. 2 31
SUV
(Sport Utility Vehicle) ....................... 25 Switching air-recirculation mode
on/off
................................................. 14 3
T
Tachometer ........................................ 220
Tail lamps
Display message ............................ 244
Tailgate
Display message ............................ 257
Emergency unlocking ....................... 91
Important safety notes .................... 87
Limiting the opening angle ............... 90
Opening dimensions ...................... 380
Opening/closing (automatically
from inside) ...................................... 90
Opening/closing (automatically
from outside) ................................... 88
Opening/closing (from outside) ....... 88
Tank
see Fuel tank
Tank content
Fuel gauge ....................................... 33
Technical data
Capacities ...................................... 373
Emergency spare wheel ................. 369
Information .................................... 372
Tires/wheels ................................. 360
Trailer loads ................................... 381
Vehicle data ................................... 380
TELEAID
Call priority .................................... 291
Downloading destinations
(COMAND) ..................................... 291
Downloading routes ....................... 294
Emergency call .............................. 288
General notes ................................ 287
Geo fencing ................................... 294
Locating a stolen vehicle ............... 293
MB info call button ........................ 290
Remote vehicle locking .................. 292
Roadside Assistance button .......... 289
Search & Send ............................... 292
Self-test ......................................... 28 8
Speed alert .................................... 294
System .......................................... 288
Triggering the vehicle alarm ........... 295
Vehicle Health Check .................... 293
Index17

SRS (Supplemental Restraint System)
Introduction
Supplemental Restraint System (SRS) with:
R The 6 SRS warning lamp
R Air bags
R Air bag control unit (with crash sensors)
R Emergency Tensioning Device (ETD) for
seat belts
R Seat belt force limiters
SRS reduces the risk of vehicle occupants
coming into contact with parts of the vehi-
cle's interior in the event of an accident. It can also reduce the forces to which vehicle occu-
pants are subjected during an accident.
SRS warning lamp
GWARNING
If SRS is malfunctioning, restraint system
components may be triggered unintentionally
or might not be triggered at all in the event of
an accident with a high rate of vehicle decel-
eration. There is an increased risk of injury,
possibly even fatal.
Have SRS checked and repaired immediately
at a qualified specialist workshop.
SRS functions are checked regularly when
you switch on the ignition and when the
engine is running. Therefore, malfunctions
can be detected in good time.
The 6 SRS warning lamp in the instrument
cluster lights up when the ignition is switched
on. It goes out no later than a few seconds
after the engine is started.
The SRS components are in operational read-
iness when the 6 SRS warning lamp goes
out while the engine is running. There is a malfunction if: R
the 6 SRS warning lamp does not light
up when the ignition is switched on
R the engine is running and the 6 SRS
warning lamp does not go out after a few
seconds
R the engine is running and the 6 SRS
warning lamp lights up again
Safety guidelines for seat belts, Emer-
gency Tensioning Devices (ETDs) and
air bags
GWARNING
R Damaged seat belts or seat belts that have
been subjected to stress in an accident
must be replaced. Their anchoring points
must also be checked. Only use seat belts
installed or supplied by an authorized
Mercedes-Benz Center.
R Air bags and pyrotechnic Emergency Ten-
sioning Devices (ETDs) contain perchlorate
material, which may require special han-
dling and regard for the environment.
Check your national disposal guidelines.
California residents, see
www.dtsc.ca.gov/HazardousWaste/
Perchlorate/index.cfm .
R Air bags and ETDs are designed to function
on a one-time-only basis. An air bag or ETDthat has deployed must be replaced.
R Do not pass seat belts over sharp edges.
They could tear.
R Do not make any modification that could
change the effectiveness of the seat belts.
R Do not bleach or dye seat belts as this may
severely weaken them. In a crash they may
not be able to provide adequate protection.
R No modifications of any kind may be made
to any components or wiring of the SRS.
R Do not change or remove any component or
part of the SRS.
R Do not install additional trim material, seat
covers, badges, etc. over the steering
wheel hub, front-passenger front air bag
Occupant safety43
Safety
Z

Driving safety systems
Overview of driving safety systems
In this section, you will find information aboutthe following driving safety systems:
R ABS ( Anti-lock Braking System)
( Y page 68)
R BAS ( Brake Assist System) ( Y page 69)
R BAS PLUS ( Brake Assist System Plus)
( Y page 69)
R ESP ®
(E lectronic Stability Program)
( Y page 70)
R EBD ( Electronic Brake force Distribution)
( Y page 73)
R PRE-SAFE ®
Brake ( Y page 73)
Important safety notes
If you fail to adapt your driving style or if you
are inattentive, the driving safety systems can
neither reduce the risk of an accident nor
override the laws of physics. Driving safety
systems are merely aids designed to assist
driving. You are responsible for the distance
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 332).
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 yellow ! 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 ( Y page 68).
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 ( Y page 262) and
display messages which may be shown in the
instrument cluster ( Y page 236).
ABS works from a speed of about 5 mph
(8 km/h), regardless of road-surface condi-
tions. ABS works on slippery surfaces, even if
you only brake gently.
Brakes
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.
68Driving safety systems
Safety

The turn signals flash once when unlocking
and three times when locking.
When it is dark, the surround lighting also
comes on if it is activated in the on-board
computer (Y page 231).
You can also set an audible signal to confirm that the vehicle has been locked. The audiblesignal can be activated and deactivated using
the on-board computer ( Y page 232).
X To unlock centrally: press the % but-
ton.
If you do not open the vehicle within approx-
imately 40 seconds of unlocking:
R the vehicle is locked again
R protection against theft is reactivated.
X To lock centrally: press 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 KEY-LESS-GO key 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.
When locking or unlocking with KEYLESS-GO,
the distance between the SmartKey and the
corresponding door handle must not be
greater than 3 ft (1 m). KEYLESS-GO checks whether a valid Smart-
Key is in the vehicle by periodically establish-
ing a radio connection between the vehicle
and the SmartKey. This happens:
R when the external door handles are
touched
R when starting the engine
R while the vehicle is in motion
X To unlock the vehicle: touch the inner
surface of the door handle.
X To lock the vehicle: touch sensor sur-
face :.
X Convenience closing feature: touch
recessed sensor surface ; for an exten-
ded period.
Further information on the convenience clos-
ing feature ( Y page 94).
If you pull on the handle of the tailgate, only
the cargo compartment of the vehicle is
unlocked.
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.
SmartKey79
Opening and closing
Z

ProblemPossible causes/consequences and M Solutions
You have lost the
mechanical key.X
Report the loss immediately to the vehicle insurers.
X If necessary, have the locks changed as well.
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 i nterior
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 319).
or
X Jump-start the vehicle ( Y page 323).
or
X Consult a qualified specialist workshop.
The engine cannot be
started using KEYLESS-
GO. The SmartKey is in
the vehicle.A door is open. Therefore, the SmartKey cannot be detected as
easily.
X Close the door and try to start the vehicle again.
There is interference from a powerful source of radio waves.
X Start your vehicle with the SmartKey in the ignition lock.
Doors
Important safety notes
GWARNING
If children are left unsupervised in the vehicle,
they could:
R open the doors, thus endangering other
people or road users.
R get out and disrupt traffic.
R operate the vehicle's equipment.
Additionally, children could set the vehicle in
motion if, for example, they:
R release the parking brake.
R shifting the automatic transmission out of
park position P
R Start the engine.
There is a risk of an accident and injury.
When leaving the vehicle, always take the
SmartKey with you and lock the vehicle. Never
leave children or animals unattended in the
vehicle. Always keep the SmartKey out of
reach of children.
GWARNING
If persons, particularly children are subjected to prolonged exposure to extreme heat or
cold, there is a risk of injury, possibly even
fatal. Never leave children unattended in the
vehicle.
You should preferably place luggage or loads
in the cargo compartment. Observe the load- ing guidelines ( Y page 274).
Unlocking and opening doors from
the inside
You can open a door from inside the vehicle
even if it has been locked. You can only open
the rear doors from inside the vehicle if they
84Doors
Opening and closing

Problems with the seat heating
ProblemPossible causes/consequences and M Solutions
The seat heating has
switched off prema-
turely or cannot be
switched on.The on-board voltage is too low because too many elect rical con-
sumers are switched on.
X Switch off electrical consumers that you do not need, such as
the rear window defroster or interior lighting.
Steering wheel
Important safety notes
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.
GWARNING
If the steering wheel is unlocked while the
vehicle is in motion, it could change position
unexpectedly. This could cause you to lose
control of the vehicle. There is a risk of an
accident.
Before starting off, make sure the steering
wheel is locked. Never unlock the steering
wheel while the vehicle is in motion.
GWARNING
Children could injure themselves if they
adjust the steering wheel. There is a risk of
injury.
When leaving the vehicle, always take the
SmartKey with you and lock the vehicle. Neverleave children unsupervised in the vehicle.
The electrically adjustable steering wheel can
still be adjusted when there is no SmartKey in
the ignition lock.
Adjusting the steering wheel man-
ually
GWARNING
If the steering wheel is unlocked while the
vehicle is in motion, it could change position
unexpectedly. This could cause you to lose
control of the vehicle. There is a risk of an
accident.
Before starting off, make sure the steering
wheel is locked. Never unlock the steering
wheel while the vehicle is in motion.
:Release lever
;To adjust the steering wheel height
=To adjust the steering wheel position
(fore-and-aft adjustment)
X Push release lever : down completely.
The steering column is unlocked.
X Adjust the steering wheel to the desired
position.
X Push release lever : up completely.
The steering column is locked.
X Check if the steering column is locked.
When doing so, try to push the steering
106Steering wheel
Seats, steering wheel and mirrors

Problems with the windshield wipers
ProblemPossible causes/consequences and M Solutions
The windshield wipers
are jammed.Leaves or snow, for example, may be obstructing the windshield
wiper movement. The wiper motor has been deactivated. X
For safety reasons, you should remove the SmartKey from the
ignition lock.
or X Switch off the engine using the Start/Stop button and o pen the
driver's door.
X Remove the cause of the obstruction.
X Switch the windshield wipers back on.
The windshield wipers
fail completely.The windshield wiper drive is malfunctioning.
X Select another wiper speed on the combination switch.
X Have the windshield wipers checked at a qualified specialist
workshop.
The windshield washer
fluid from the spray
nozzles no longer hits
the center of the wind-
shield.The spray nozzles are misaligned.
X Have the spray nozzles adjusted at a qualified specialist work-
shop.
Windshield wipers129
Lights and windshield wipers
Z