check engine MERCEDES-BENZ GLK-Class 2012 X204 Owner's Manual

Convenience closing feature .............. 83
Convenience opening feature ............ 83
Coolant (engine) Checking the level .........................240
Display message ............................ 191
Notes ............................................. 307
Temperature gauge ........................ 166
Warning lamp ................................. 207
Cooling
see Climate control
Cornering light function
Display message ............................ 188
Function/notes ............................. 106
Crash-responsive emergency
lighting ............................................... 108
Cruise control Cruise control lever .......................151
Deactivating ................................... 153
Display message ............................ 194
Driving system ............................... 151
Function/notes ............................. 151
Important safety notes ..................151
LIM indicator lamp .........................151
Setting a speed .............................. 152
Storing and maintaining current
speed ............................................. 152
Cup holder
Center console .............................. 220
Important safety notes ..................220
Rear compartment .........................221
Customer Assistance Center (CAC) ... 24
Customer Relations Department ....... 24
D
Dashboard see Cockpit
Data
see Technical data
Date (on-board computer) ................ 176
Daytime running lamp mode see Daytime running lamps
Daytime running lamps
Display message ............................ 191
Switching on/off (on-board
computer) ...................................... 176
Switching on/off (switch) ..............103
Delayed switch-off
Exterior lighting (on-board
computer) ...................................... 176
Interior lighting .............................. 177
Digital speedometer ......................... 170
Display (cleaning instructions) ........ 248
Display messages Calling up (on-board computer) .....179
Driving systems ............................. 194
Engine ............................................ 191
General notes ................................ 179
Hiding (on-board computer) ...........179
KEYLESS-GO .................................. 198
Lights ............................................. 188
Safety systems .............................. 180
Service interval display ..................242
SmartKey ....................................... 198
Tires ............................................... 194
Vehicle ........................................... 197
Distance recorder ............................. 170
see Odometer
see Trip odometer
Doors
Automatic locking (on-board
computer) ...................................... 177
Automatic locking (switch) ............... 76
Central locking/unlocking
(SmartKey) ....................................... 68
Control panel ................................... 35
Display message ............................ 197
Emergency locking ........................... 77
Emergency unlocking .......................77
Important safety notes ....................75
Opening (from inside) ......................76
Downhill Speed Regulation
see DSR (Downhill Speed Regulation)
Drinking and driving ......................... 145
Drinks holder see Cup holder
Drive program
Automatic ...................................... 138
Display ........................................... 136
Driver's door
see Doors
Driver's seat
see Seats Index7

Driving abroadMercedes-Benz Service .................243
Symmetrical low beam ..................102
Driving in mountainous terrain
Approach/departure angle ............150
Driving off-road
see Off-road driving
Driving safety systems
ABS (Anti-lock Braking System) .......62
BAS (Brake Assist System) ..............62
Electronic brake force distribution ...64
ESP ®
(Electronic Stability
Program) .......................................... 62
ETS/4ETS (Electronic Traction
System) ........................................... 63
Important safety information ...........61
Overview .......................................... 61
Driving systems
Cruise control ................................ 151
Display message ............................ 194
PARKTRONIC ................................. 154
Rear view camera .......................... 157
Driving tips
Automatic transmission .................137
Brakes ........................................... 146
Break-in period .............................. 130
Downhill gradient ........................... 146
Drinking and driving .......................145
Driving abroad ............................... 102
Driving in winter ............................. 148
Driving on flooded roads ................148
Driving on sand .............................. 150
Driving on wet roads ......................148
Driving over obstacles ...................150
Exhaust check ............................... 146
Fuel ................................................ 145
General .......................................... 145
Hydroplaning ................................. 148
Icy road surfaces ........................... 149
Limited braking efficiency on
salted roads ................................... 147
Off-road driving .............................. 149
Pedals ............................................ 145
Snow chains .................................. 272
Symmetrical low beam ..................102
Tire ruts ......................................... 150
Towing a trailer .............................. 159Traveling uphill ............................... 150
Wet road surface ........................... 147
DVD audio (on-board computer) ...... 173
DVD-Video (on-board computer) ...... 173
E
EASY-ENTRY feature Activating/deactivating .................177
Function/notes ................................ 96
EASY-EXIT feature
Crash-responsive ............................. 97
Function/notes ................................ 96
Switching on/off ........................... 177
EBD (electronic brake force
distribution) Display message ............................ 182
Function/notes ................................ 64
Electrical fuses
see Fuses
Electronic brake force distribution
see EBD (Electronic Brake force
Distribution)
Electronic Stability Program
see ESP ®
(Electronic Stability Program)
Electronic Traction System
see ETS/4ETS (Electronic
Traction System)
Emergency release
Driver's door .................................... 77
Vehicle ............................................. 77
Emergency spare wheel
Storage location ............................ 252
Stowing .......................................... 253
Emergency Tensioning Devices
Function ........................................... 54
Safety guidelines ............................. 39
Emergency unlocking
Tailgate ............................................ 82
Emissions purification
Service and warranty information ....20
Engine
Check Engine warning lamp ........... 206
Display message ............................ 191
Emergency starting ........................266
Engine number ............................... 302
Irregular running ............................ 134
Starting problems ..........................134
8Index

Starting the engine with the
SmartKey ....................................... 132
Starting with KEYLESS-GO .............132
Switching off .................................. 143
Engine electronics
Problem (malfunction) ...................134
Engine oil
Adding ........................................... 239
Additives ........................................ 306
Checking the oil level ..................... 239
Checking the oil level using the
dipstick .......................................... 239
Display message ............................ 193
Filling capacity ............................... 304
Notes about oil grades ................... 305
Notes on oil level/consumption ....239
Viscosity ........................................ 306
ESP ®
(Electronic Stability
Program) Deactivating/activating ...................63
Display message ............................ 180
ETS/4ETS ........................................ 63
Function/notes ................................ 62
Important safety information ...........62
Trailer stabilization ........................... 64
Warning lamp ................................. 203
ETS/4ETS (Electronic Traction
System) ................................................ 63
Exhaust check ................................... 146
Exhaust tail pipe (cleaning
instructions) ...................................... 247
Exterior lighting see Lights
Exterior mirrors
Adjusting ......................................... 97
Dipping (automatic) .........................99
Folding in/out (automatically) .........98
Folding in/out (electrically) .............98
Folding in when locking (on-board
computer) ...................................... 178
Out of position (troubleshooting) .....99
Setting ............................................. 98
Storing settings (memory
function) ........................................ 100
Storing the parking position ............. 99F
Filler cap see Fuel filler flap
First-aid kit ......................................... 252
Flat tire Changing a wheel/mounting the
spare wheel ................................... 254
Preparing the vehicle .....................253
Raising the vehicle .........................255
see Emergency spare wheel
Floormat ............................................. 236
Folding the rear bench seat
forwards/back .................................. 214
Fording On flooded roads ........................... 148
Frequencies
Garage door opener .......................235
Front fog lamps ................................. 104
Display message ............................ 190
Switching on/off ........................... 104
Front windshield
see Windshield
Fuel
Additives ........................................ 305
Consumption statistics ..................170
Displaying the current
consumption .................................. 170
Displaying the range ......................170
Driving tips .................................... 145
Fuel gauge ....................................... 29
Important safety notes ..................304
Premium-grade unleaded gasoline . 304
Problem (malfunction) ...................143
Refueling ........................................ 141
Specifications ................................ 305
Tank content/reserve fuel .............304
Fuel filler flap
Opening/closing ............................ 141
Fuel level
Calling up the range (on-board
computer) ...................................... 170
Fuel tank
Capacity ........................................ 304
Problem (malfunction) ...................143
Fuse allocation chart (vehicle tool
kit) ...................................................... 252Index9

Malfunctions relevant to safetyReporting ......................................... 24
Matte finish (cleaning
instructions) ...................................... 245
mbrace Call priority .................................... 229
Display message ............................ 184
Downloading destinations
(COMAND) ..................................... 229
Emergency call .............................. 226
Important safety notes ..................225
Locating a stolen vehicle ...............231
MB info call button ........................228
Remote vehicle locking ..................230
Roadside Assistance button ..........227
Search & Send ............................... 230
Self-test ......................................... 226
System .......................................... 225
Vehicle remote unlocking ..............230
Mechanical key
Function/notes ................................ 71
Locking vehicle ................................ 77
Unlocking the driver's door ..............77
Memory card (audio) ......................... 173
Memory function ............................... 100
Message memory (on-board
computer) .......................................... 179
Messages see Display messages
Mirrors
see Exterior mirrors
see Rear-view mirror
see Vanity mirror
Mobile phone
Menu (on-board computer) ............173
Modifying the programming
(SmartKey) ........................................... 71
MP3 Operating ....................................... 173
see separate operating instructions
Multifunction display
Function/notes ............................. 168
Permanent display .........................175
Multifunction steering wheel
Operating the on-board computer . 167
Overview .......................................... 31Multifunction steering wheel (4
buttons) see 4-button multifunction
steering wheel
N
Navigation Menu (on-board computer) ............171
see separate operating instructions
NECK-PRO head restraints
Operation ......................................... 50
Resetting after being triggered ........50
Notes on breaking-in a new
vehicle ................................................ 130
O
Occupant Classification System
(OCS) Faults ............................................... 49
Operation ......................................... 44
System self-test ............................... 47
Occupant safety
Children in the vehicle .....................55
System overview .............................. 38
Octane number (fuel) ........................ 305
Odometer ........................................... 170
see Trip odometer
Off-road driving
Checklist after driving off-road ......150
Checklist before driving off-road .... 150
General information .......................149
Important safety notes ..................149
Traveling uphill ............................... 150
Off-road system
4MATIC .......................................... 153
Oil
see Engine oil
On-board computer
Audio menu ................................... 172
Convenience submenu ..................177
Displaying a service message ........243
Display messages ..........................179
Factory settings submenu .............178
Important safety notes ..................166
Instrument cluster submenu ..........175
Lighting submenu .......................... 176
12Index

Folding the backrest (rear
compartment) forwards/back .......215
Folding the rear bench seat
forwards/back ............................... 214
Important safety notes ....................91
Seat heating problem ......................95
Storing settings (memory
function) ........................................ 100
Switching seat heating on/off .........95
Sensors (cleaning instructions) ....... 247
Service see ASSYST PLUS service interval
display
Service interval display
Displaying service messages .........243
Hiding service messages ...............243
Notes ............................................. 243
Service messages ..........................242
Service menu (on-board computer) . 175
Service products Brake fluid ..................................... 306
Capacities ...................................... 304
Coolant (engine) ............................ 307
Engine oil ....................................... 305
Fuel ................................................ 304
Important safety notes ..................302
Refrigerant (air-conditioning
system) .......................................... 306
Washer fluid ................................... 307
Settings
Factory (on-board computer) .........178
On-board computer .......................175
Setting the air distribution ............... 122
Setting the airflow ............................ 123
Side impact air bag ............................. 42
Side marker lamp (display
message) ............................................ 190
Side marker lamps (changing
bulbs) ................................................. 112
Side windows Convenience closing feature ............83
Convenience opening feature ..........83
Important safety information ...........82
Opening/closing .............................. 82
Problem (malfunction) .....................85
Resetting ......................................... 84Sliding sunroof
see Panorama roof with power
tilt/sliding panel
SmartKey
Changing the battery .......................72
Changing the programming .............71
Checking the battery .......................72
Convenience closing feature ............83
Convenience opening feature ..........83
Display message ............................ 198
Door central locking/unlocking .......68
Important safety notes ....................68
Loss ................................................. 74
Mechanical key ................................ 71
Positions (ignition lock) .................131
Problem (malfunction) .....................74
Starting the engine ........................132
Snow chains ...................................... 272
Sockets Center console .............................. 223
Luggage compartment ...................224
Points to observe before use .........223
Rear compartment .........................224
Spare wheel
Notes/data .................................... 297
Storage location ............................ 252
Stowing .......................................... 253
see Emergency spare wheel
Specialist workshop ............................ 23
Speed, controlling see Cruise control
Speedometer
Digital ............................................ 170
In the Instrument cluster .................29
Segments ...................................... 167
Selecting the unit of
measurement ................................ 175
see Instrument cluster
SRS (Supplemental Restraint
System) Display message ............................ 184
Introduction ..................................... 38
Warning lamp ................................. 205
Warning lamp (function) ................... 38
Standing lamps
Changing bulbs .............................. 111
Display message ............................ 190
Switching on/off ........................... 102Index15

Starting (engine) ................................ 132
Station see Radio
Steering (display message) .............. 198
Steering wheel Adjusting (electrically) .....................96
Adjusting (manually) ........................96
Button overview ............................... 31
Buttons (on-board computer) ......... 167
Important safety notes ....................96
Storing settings (memory
function) ........................................ 100
Steering wheel (cleaning
instructions) ...................................... 248
Stowage compartments Armrest (under) ............................. 213
Cup holders ................................... 220
Glove box ....................................... 213
Important safety information .........212
Parcel net ...................................... 214
Rear ............................................... 213
Summer opening
see Convenience opening feature
Summer tires ..................................... 272
Sun visor ............................................ 221
Supplemental Restraint System see SRS (Supplemental Restraint
System)
Surround lighting (on-board
computer) .......................................... 176
SUV (Sport Utility Vehicle) .......................22
Switching air-recirculation mode
on/off ................................................. 124
Switching off the alarm (ATA) ............ 65
T
Tachometer ........................................ 167
Tailgate Display message ............................ 197
Emergency unlocking .......................82
Important safety notes ....................78
Limiting the opening angle ...............81
Opening/closing (automatically
from inside) ...................................... 80
Opening/closing (automatically
from outside) ................................... 79
Opening/closing (from outside) .......79
Tail lamps
Display message ............................ 189
see Lights
Tank
see Fuel tank
Tank content
Fuel gauge ....................................... 29
Technical data
Notes ............................................. 300
Tires/wheels ................................. 295
Trailer Loads .................................. 309
Vehicle data ................................... 308
TELEAID
Call priority .................................... 229
Display message ............................ 184
Downloading destinations
(COMAND) ..................................... 229
Emergency call .............................. 226
Important safety notes ..................225
Locating a stolen vehicle ...............231
MB info call button ........................228
Remote vehicle locking ..................230
Roadside Assistance button ..........227
Search & Send ............................... 230
Self-test ......................................... 226
System .......................................... 225
Vehicle remote unlocking ..............230
Telephone
Accepting a call ............................. 174
Display message ............................ 198
Menu (on-board computer) ............173
Number from the phone book ........ 174
Redialing ........................................ 174
Rejecting/ending a call .................174
Temperature
Coolant .......................................... 166
Outside temperature ...................... 167
Setting (climate control) ................122
Theft deterrent locking system
Immobilizer ...................................... 65
Time (on-board computer) ................ 176
Tire pressure Calling up (on-board computer) .....278
Checking manually ........................277
Display message ............................ 19416Index

W
Warning and indicator lamps ABS ................................................ 202
Brakes ........................................... 201
Check Engine ................................. 206
Coolant .......................................... 207
Cruise control ................................ 151
ESP ®
.............................................. 203
ESP ®
OFF ....................................... 204
Fuel tank ........................................ 206
Overview .......................................... 30
PASSENGER AIRBAG OFF
indicator lamp .................................. 44
Reserve fuel ................................... 206
Seat belt ........................................ 200
SRS ................................................ 205
Tire pressure monitor ....................209
Warranty ............................................ 301
Washer fluid Display message ............................ 198
see Windshield washer system
Wheel bolt tightening torque ........... 258
Wheel chock ...................................... 254
Wheels Changing a wheel .......................... 254
Checking ........................................ 271
Cleaning ......................................... 245
Important safety notes ..................270
Interchanging/changing ................294
Mounting a wheel .......................... 256
Removing a wheel ..........................256
Storing ........................................... 295
Tightening torque ........................... 258
Wheel size/tire size .......................295
Window curtain air bag
Display message ............................ 185
Operation ......................................... 44
Windows
Cleaning ......................................... 246
see Side windows
Windshield
Defrosting ...................................... 123
Windshield washer system .............. 241
Notes ............................................. 307
Windshield wipers
Problem (malfunction) ...................116
Rear window wiper ........................114Replacing the wiper blades ............114
Switching on/off ........................... 113
Winter driving
Important safety notes ..................272
Slippery road surfaces ...................149
Snow chains .................................. 272
Winter tires
M+S tires ....................................... 272
Wiper blades
Cleaning ......................................... 246
Important safety notes ..................114
Replacing (rear window) ................116
Replacing (windshield) ...................115
Wooden trim (cleaning
instructions) ...................................... 248Index19

Warning and indicator lampsFunctionPage:High-beam headlamps105;ESP®
OFF203=Low-beam headlamps103?Turn signal105AESP ®203BTurn signal105CRear fog lamp104DTire pressure monitor (USA
only)
209
ESRS205FunctionPageFABS202GSeat belt200HFront fog lamps104ICoolant207JBrakes (USA only)201KBrakes (Canada only)201LCheck engine206MReserve fuel20630Instrument clusterAt a glance

Useful information
i This Operator's Manual describes all
models and all standard and optional
equipment of your vehicle available at the
time of publication of the Operator's
Manual. Country-specific differences are
possible. Please note that your vehicle may
not be equipped with all features
described. This also applies to safety-
related systems and functions.
i Please read the information on qualified
specialist workshops ( Y page 23).
Occupant safety
Overview of occupant safety
In this section, you will learn the most
important facts about the restraint system
components of the vehicle.
The restraint system consists of:
R seat belts
R child restraint systems
R LATCH-type (ISOFIX) child seat anchors
Additional protection is provided by:
R SRS (Supplemental Restraint System)
R NECK-PRO head restraints
R Air bag system components with:
- PASSENGER AIR BAG OFF indicator lamp
- front-passenger seat with Occupant
Classification System (OCS)
The different air bag systems work
independently of each other. The protective
functions of the system work in conjunction
with each other. Not all air bags are deployed
in an accident.
GWARNING
Modifications to or work improperly
conducted on restraint system components
or their wiring, as well as tampering with
interconnected electronic systems, can lead
to the restraint systems no longer functioning
as intended.
Air bags or Emergency Tensioning Devices
(ETDs), for example, could deploy
inadvertently or fail to deploy in accidents
although the deceleration threshold for air
bag deployment is exceeded. Therefore,
never modify the restraint systems. Do not
tamper with electronic components or their
software.
i See "Children in the vehicle"
( Y page 55) for more information on
infants and children traveling with you in
the vehicle and restraints for infants and
children.
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
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 6 SRS warning lamp
is not lit while the engine is running .
38Occupant safetySafety

GWARNING
The SRS self-check has detected a
malfunction if the 6 SRS warning lamp:
R does not come on at all
R fails to go out approximately 4 seconds
after the engine was started
R comes on after the engine was started or
while driving
For your safety, Mercedes-Benz strongly
recommends that you have the system
checked as soon as possible at an authorized
Mercedes-Benz Center. Otherwise the SRS
may not be activated when it is needed in an
accident, which could result in serious or fatal
injury. The SRS might also deploy
unexpectedly and unnecessarily which could
also result in injury.
In addition, improper work on the SRS creates
a risk of rendering the SRS inoperative or
causing unintended air bag deployment. Work
on the SRS must therefore only be performed
by qualified technicians. Contact an
authorized Mercedes-Benz Center.
If it is necessary to modify an air bag system
to accommodate a person with disabilities,
contact an authorized Mercedes-Benz Center
for details. USA only: Call our Customer
Assistance Center at 1-800-FOR-MERCedes
(1-800-367-6372) for details.
Safety guidelines for seat belts,
Emergency 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
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
cover, outer sides of the seat backrests,
door trim panels, or door frame trims.
R Do not install additional electrical/
electronic equipment on or near SRS
components and wiring.
R Keep area between air bags and occupants
free of objects (e.g. packages, purses,
umbrellas, etc.).
R Do not hang items such as coat hangers
from the coat hooks or handles over the
door. These items may be thrown around in
the vehicle and cause head and other
injuries when the window curtain air bag is
deployed.
R Air bag system components will be hot after
an air bag has inflated. Do not touch them.
R Never place your feet on the instrument
panel, dashboard, or on the seat. Always
keep both feet on the floor in front of the
seat.
R Improper repair work on the SRS creates a
risk of rendering the SRS inoperative or
causing unintended air bag deployment.
Work on the SRS must therefore only beOccupant safety39SafetyZ