check engine light MERCEDES-BENZ GLK-CLASS SUV 2014 Owners Manual

ATTENTION ASSIST
Activating/deactivating .................229
Display message ............................ 251
Function/notes ............................. 201
Audio menu (on-board
computer) .......................................... 226
Audio system see separate operating instructions
Authorized Centers
see Qualified specialist workshop
Authorized Mercedes-Benz Center
see Qualified specialist workshop
Authorized workshops
see Qualified specialist workshop
AUTO lights
Display message ............................ 246
see Lights
Automatic engine start (ECO start/
stop function) .................................... 149
Automatic engine switch-off (ECO
start/stop function) ..........................149
Automatic headlamp mode ..............113
Automatic transmission Automatic drive program ...............156
Changing gea r............................... 155
DIRECT SELECT lever .....................152
Display message ............................ 258
Driving tips .................................... 155
Emergency running mode ..............158
Engaging drive position .................. 154
Engaging neutral ............................ 153
Engaging park position
automatically ................................. 153
Engaging reverse gear ...................153
Engaging the park position ............153
Kickdown ....................................... 155
Manual drive program ....................156
Overview ........................................ 152
Problem (malfunction) ...................158
Program selector button ................155
Pulling away ................................... 147
Starting the engine ........................147
Steering wheel paddle shifters ......156
Trailer towing ................................. 155
Transmission position displa y........ 153
Transmission positions ..................154
Automatic transmission
emergency mode ............................... 158 B
Backup lamp Changing bulbs .............................. 122
Display message ............................ 245
Bag hook ............................................ 278
Ball coupling Installing ........................................ 214
Removing ....................................... 216
Storing ........................................... 217
BAS (Brake Assist System) .................68
BAS PLUS (Brake Assist System
PLUS) .................................................... 68
Battery (SmartKey) Checking .......................................... 79
Important safety notes ....................78
Replacing ......................................... 79
Battery (vehicle)
Charging ........................................ 318
Display message ............................ 249
Important safety notes ..................316
Jump starting ................................. 320
Blind Spot Assist
Activating/deactivating .................229
Display message ............................ 253
Notes/function .............................. 202
Trailer towing ................................. 204
see Active Blind Spot Assist
BlueTEC
Adding DEF .................................... 162
BlueTEC (DEF) .................................... 370
Brake Assist see BAS (Brake Assist System)
Brake fluid
Display message ............................ 238
Notes ............................................. 372
Brake lamps
Display message ............................ 244
Brakes
ABS .................................................. 67
BAS .................................................. 68
BAS PLUS ........................................ 68
Brake fluid (notes) .........................372
Display message ............................ 236
Driving tips .................................... 168
Important safety notes ..................168
Maintenance .................................. 169 Index
5

Maximum cooling
.......................... 138
Notes on using automatic climate
control ........................................... 133
Notes on using dual-zone
automatic climate control ..............130
Overview of systems ......................128
Problems with cooling with air
dehumidification ............................ 135
Problem with the rear window
defroster ........................................ 139
Rear control panel .........................132
Refrigerant ..................................... 374
Refrigerant filling capacity .............374
Setting the air distribution .............136
Setting the airflow .........................137
Setting the air vents ......................140
Setting the temperature ................136
Switching air-recirculation mode
on/off ............................................ 139
Switching on/off ........................... 133
Switching residual heat on/off ......139
Switching the rear window
defroster on/off ............................ 138
Switching the ZONE function on/
off .................................................. 137
Coat hooks ......................................... 280
Cockpit Overview .......................................... 32
see Instrument cluster
Collapsible spare wheel
Inflating ......................................... 362
see Emergency spare wheel
COMAND
see separate operating instructions
Combination switch ..........................114
Consumption statistics (on-board
computer) .......................................... 223
Convenience closing feature ..............90
Convenience opening feature ............90
Coolant (engine) Checking the level .........................304
Display message ............................ 247
Filling capacity ............................... 373
Important safety notes ..................372
Temperature gauge ........................ 220
Warning lamp ................................. 269
Cooling
see Climate control Copyright
............................................. 29
Cornering light function Changing bulbs .............................. 121
Display message ............................ 243
Function/notes ............................. 116
Crash-responsive emergency
lighting ............................................... 119
Cruise control Cruise control lever .......................174
Deactivating ................................... 175
Display message ............................ 255
Driving system ............................... 173
Function/notes ............................. 173
Important safety notes ..................173
Setting a speed .............................. 175
Storing and maintaining current
speed ............................................ .174
Cup holder
Center console .............................. 282
Important safety notes ..................282
Rear compartment .........................282
Customer Assistance Center (CAC) ...27
Customer Relations Department .......27 D
Dashboard see Instrument cluster
Dashboard lighting
see Instrument cluster lighting
Data
see Technical data
Daytime running lamps
Display message ............................ 246
Switching on/off (on-board
computer) ...................................... 231
Switching on/off (switch) ..............113
Dealerships
see Qualified specialist workshop
Declarations of conformity ................. 26
DEF Adding ........................................... 162
Display message ............................ 250
Filling capacity ............................... 371
Important safety notes ..................370 Index
7

Engine oil
Adding ........................................... 303
Additives ........................................ 372
Checking the oil level ..................... 302
Checking the oil level using the
dipstick .......................................... 303
Display message ............................ 249
Filling capacity ............................... 372
Notes about oil grades ................... 371
Notes on oil level/consumption ....302
Viscosity ........................................ 372
ESP ®
(Electronic Stability
Program) Deactivating/activating ...................70
Display message ............................ 236
ETS/4ETS ........................................ 70
Function/notes ......................... 69, 70
Important safety information ...........70
Trailer stabilization ........................... 71
Warning lamp ................................. 265
ETS/4ETS (Electronic Traction
System) ................................................ 70
Exhaust check ................................... 166
Exhaust tail pipe (cleaning
instructions) ...................................... 310
Exterior lighting Setting options .............................. 112
see Lights
Exterior mirrors
Adjusting ....................................... 106
Dipping (automatic) .......................107
Folding in/out (automatically). ......107
Folding in/out (electrically). ..........107
Folding in when locking (on-board
computer) ...................................... 234
Out of position (troubleshooting) ...107
Setting ........................................... 107
Storing settings (memory function) 109
Storing the parking position ..........108 F
Filler cap see Fuel filler flap
First-aid kit ......................................... 314 Flat tire
MOExtended run-flat system .........315
Preparing the vehicle .....................314
see Emergency spare wheel
Floormats ........................................... 298
Fog lamps Switching on/off ........................... 113
Folding the rear bench seat
forwards/back .................................. 276
Fording Off-road ......................................... 170
On flooded roads ........................... 170
Front fog lamps
Display message ............................ 245
Switching on/off ........................... 113
Fuel
Additives ........................................ 369
Consumption statistics ..................223
Displaying the current
consumption .................................. 224
Displaying the range ......................224
Driving tips .................................... 166
Fuel gauge ....................................... 33
Grade (gasoline) ............................ 369
Important safety notes ..................368
Premium-grade unleaded gasoline .369
Problem (malfunction) ...................161
Quality (diesel )............................... 370
Refueling ........................................ 158
Tank content/reserve fuel .............368
Fuel filler flap
Opening/closing ............................ 159
Fuel filter (display message) ............250
Fuel level Calling up the range (on-board
computer) ...................................... 224
Fuel tank
Capacity ........................................ 368
Problem (malfunction) ...................161
Fuse allocation chart (vehicle tool
kit) ...................................................... 314
Fuses Allocation chart ............................. 325
Before changing ............................. 325
Dashboard fuse box .......................325
Fuse box in the cargo
compartment ................................. 32610
Index

SRS (Supplemental Restraint System)
Introduction SRS consists of:
R
The 6 SRS warning lamp
R Air bags
R Air bag control unit (with crash sensors)
R Emergency Tensioning Devices
R Belt force limiters
SRS reduces the risk of occupants coming
into contact with the vehicle's interior in the
event of an accident. It can also reduce the
effect of the forces to which occupants are
subjected during an accident.
SRS warning lamp G
WARNING
If SRS is malfunctioning, child 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 deceleration. 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
readiness when the 6SRS 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 6SRS
warning lamp does not go out after a few
seconds
R the engine is running and the 6SRS
warning lamp lights up again
Safety guidelines for seat belts,
Emergency Tensioning Devices (ETDs)
and air bags G
WARNING
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
Tensioning Devices (ETDs) contain
perchlorate material, which may require
special handling 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 ETD
that 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 safety
43Safety
Z

system manufacturer's installation
instructions.
G
WARNING
Child restraint systems or their securing
systems which have been damaged or
subjected to a load in an accident can no
longer protect as intended. The child cannot
then be restrained in the event of an accident,
heavy braking or sudden changes of direction.
There is an increased risk of injury, possibly
even fatal.
Replace child restraint systems which have
been damaged or subjected to a load in an
accident as soon as possible. Have the
securing systems on the child restraint
system checked at a qualified specialist
workshop, before you install a child restraint
system again. G
WARNING
Infants and small children should never share
a seat belt with another occupant. In the event
of an accident, they could be crushed
between the occupant and seat belt.
A child's risk of serious or fatal injuries is
significantly increased if the child restraints
are not properly secured in the vehicle and/
or the child is not properly secured in the child
restraint.
Children that are too large for a child restraint
must travel in seats using normal seat belts.
Position the shoulder belt across the chest
and shoulder, not the face or neck. A booster
seat may be necessary to achieve proper seat
belt positioning for children over 41 lbs
(18 kg) until they reach a height where a lap/
shoulder belt fits properly without a booster
seat.
When the child restraint is not in use, remove
it from the vehicle or secure it with the seat
belt to prevent the child restraint from
becoming a projectile in the event of an
accident. G
WARNING
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. G
WARNING
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. G
WARNING
If the child restraint system is subjected to
direct sunlight, parts may get very hot.
Children may burn themselves on these parts,
particularly on the metal parts of the child
restraint system. There is a risk of injury.
If you leave the vehicle, taking the child with
you, always ensure that the child restraint
system is not exposed to direct sunlight.
Protect it with a blanket, for example. If the
child restraint system has been exposed to
direct sunlight, let it cool down before
securing the child in it. Never leave children
unattended in the vehicle. Children in the vehicle
63Safety Z

X
To activate/deactivate: press button;.
If indicator lamp :is lit, operation of the
rear side windows is disabled. Operation is
only possible using the switches in the
driver's door. If indicator lamp :is off,
operation is possible using the switches in
the rear compartment. 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)
R BAS ( Brake Assist System)
R BAS PLUS ( BrakeAssist System Plus)
R ESP ®
(Electronic StabilityProgram)
R EBD ( Electronic Brake force Distribution)
R PRE-SAFE ®
Brake Important safety notes
If you fail to adapt your driving style or
become distracted, the driving safety
systems 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 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.
i
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 330).
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
vehicle 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 i
Observe the "Important safety notes"
section ( Ypage 67). G
WARNING
If ABS is faulty, the wheels could lock when
braking. The steerability and braking
characteristics may be severely impaired.
Additionally, further driving safety systems
are deactivated. There is an increased danger
of skidding and accidents.
Drive on carefully. Have ABS checked
immediately at a qualified specialist
workshop.
When ABS is malfunctioning, other systems,
including driving safety systems, will also
become inoperative. Observe the information Driving safety systems
67Safety Z

ETS/4ETS (Electronic Traction System)
i
Observe the "Important safety notes"
section (Y page 67).
ETS/4ETS traction control is part of ESP ®
.
Traction control brakes the drive wheels
individually 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
transferred 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"
section (Y page 67). G
WARNING
If ESP ®
is malfunctioning, ESP ®
is unable to
stabilize the vehicle. Additionally, further
driving safety systems are deactivated. This
increases the risk of skidding and an accident.
Drive on carefully. Have ESP ®
checked at a
qualified specialist workshop.
! When testing the electric parking brake
on a braking dynamometer, switch off the
ignition. Application of the brakes by
ESP ®
may otherwise destroy the brake
system.
Vehicles without 4MATIC: observe the notes
on ESP ®
(Y page 324) when towing the
vehicle with a raised rear axle.
! Vehicles with 4MATIC: function or
performance tests may only be carried out
on a 2-axle dynamometer. Before you
operate the vehicle on such a
dynamometer, please consult a qualified
workshop. You could otherwise damage
the drive train or the brake system.
ESP ®
is deactivated if the åwarning lamp
in the instrument cluster lights up
continuously when the engine is running. If the
÷ 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 265) and display messages which
may be shown in the instrument cluster
(Y page 236).
i Only use wheels with the recommended
tire sizes. Only then will ESP ®
function
properly.
Characteristics of ESP General information
If the
÷ ESP warning lamp goes out before
beginning the journey, ESP ®
is automatically
active.
If ESP ®
intervenes, the ÷ESP®
warning
lamp flashes in the instrument cluster.
If ESP ®
intervenes:
X Do not deactivate ESP ®
under any
circumstances.
X Only depress the accelerator pedal as far
as necessary when pulling away.
X Adapt your driving style to suit the
prevailing 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
automatically when the driver wants to pull
away again. ESP ®
remains in its previously
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 ® Important safety notes
i Observe the "Important safety notes"
section (Y page 67). 70
Driving safety systemsSafety

In the event of snowfall or heavy rain, the
recognition can be impaired.
Recognition by the radar sensor system is
also impaired in the event of:
R dirt on the sensors or anything else
covering the sensors
R interference by other radar sources
R there are strong radar reflections, for
example in parking garages
R a narrow vehicle traveling in front, e.g. a
motorbike
R a vehicle traveling in front on a different line
relative to the center of your vehicle
Following damage to the front end of the
vehicle, have the configuration and operation
of the radar sensors checked at a qualified
specialist workshop. This also applies to
collisions at low speeds where there is no
visible damage to the front of the vehicle.
Function X
To activate/deactivate: activate or
deactivate PRE-SAFE ®
Brake in the on-
board computer (Y page 229).
If the PRE-SAFE ®
Brake is not activated, the
æ symbol appears in the multifunction
display.
Starting at a speed of around 4 mph
(7 km/h), this function warns you if you
rapidly approach a vehicle in front. An
intermittent warning tone will then sound and
the · distance warning lamp will light up
in the instrument cluster.
X Brake immediately to defuse the situation.
or
X Take evasive action provided it is safe to do
so.
PRE-SAFE ®
Brake can also brake the vehicle
automatically under the following conditions:
R the driver and front-passenger have their
seat belts fastened and
R the vehicle speed is between
approximately 4 mph (7 km/h) and
124 mph (200 km/h)
At speeds of up to approximately 40 mph
(70 km/h) PRE-SAFE ®
Brake can also detect
stationary objects. Examples of stationary
objects are stopped or parked vehicles.
i If there is an increased risk of collision,
preventive passenger protection measures
(PRE-SAFE ®
) are activated.
If the risk of collision with the vehicle in front
remains and you do not brake, take evasive
action or accelerate significantly, the vehicle
may perform automatic emergency braking,
up to the point of full brake application.
Automatic emergency braking is not
performed until immediately prior to an
imminent accident.
You can prevent the intervention of the PRE-
SAFE ®
Brake at any time by:
R depressing the accelerator pedal further.
R activating kickdown.
R releasing the brake pedal.
The braking action of PRE-SAFE ®
Brake is
ended automatically if:
R you maneuver to avoid the obstacle.
R there is no longer any danger of a rear-end
collision.
R there is no longer an obstacle detected in
front of your vehicle. Theft deterrent locking system
Immobilizer
The immobilizer prevents your vehicle from
being started without the correct SmartKey.
When leaving the vehicle, always take the
SmartKey with you and lock the vehicle. The
engine can be started by anyone with a valid
SmartKey that is left inside the vehicle. Theft deterrent locking system
73Safety Z

:
& To lock the vehicle
; F To open/close the tailgate
= % To unlock the vehicle
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 audible
signal can be activated and deactivated using
the on-board computer (Y page 233).
X To unlock centrally: press the%
button.
If you do not open the vehicle within
approximately 40 seconds of unlocking:
R the vehicle is locked again.
R the theft deterrent locking system is armed
again.
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
KEYLESS-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
conventional 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 key and the
corresponding door handle must not be
greater than 3 ft (1 m).
KEYLESS-GO checks whether a valid
SmartKey is in the vehicle by periodically
establishing 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
surface :.
X Convenience closing feature: touch
recessed sensor surface ;for an
extended period.
Further information on the convenience
closing feature (Y page 91).
If you pull on the handle of the tailgate, only
the cargo compartment of the vehicle is
unlocked. Changing the settings of the locking
system
You can change the settings of the locking
system. This means that only the driver's door SmartKey
77Opening and closing Z

Problem Possible causes/consequences and
M
MSolutions 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 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 316).
or
X Jump-start the vehicle (Y page 320).
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
G
WARNING
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.
G
WARNING
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
loading 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 Doors
81Opening and closing Z