
Rear fog lamp (display message) ..... 185
Rear seat backrest Display message ............................ 193
Rear seat backrest (display
message) ............................................ 193
Rear view camera Function/notes ............................. 154
Rear view camera (cleaning
instructions) ...................................... 240
Rear-view mirror Anti-glare (manual) ..........................97
Dipping (automatic) .........................98
Rear window heating
Malfunction .................................... 123
Switching on/off ........................... 123
Rear window wiper ........................... 114
Replacing the wiper blade .............. 115
Refueling ............................................ 140
Remote control Programming (garage door
opener) .......................................... 225
Reporting
Malfunctions relevant to safety ........ 21
Reserve fuel
Display message ............................ 189
Warning lamp ................................. 200
Restraint systems
see SRS
Reversing lamp (display message) .. 185
Roadside Assistance (breakdown) .... 18
Roller blind see Roller sunblind
Roller sunblind
Opening/closing .............................. 87
Panorama roof with power tilt/
sliding panel ..................................... 86
Roof carrier ................................ 213, 214
Roof lining and carpets (cleaning
guidelines) ......................................... 242
Route see Route guidance (on-board
computer)
Route guidance (on-board
computer) .......................................... 167S
Safety Children in the vehicle .....................55
Child restraint systems ....................56
Occupant Classification System
(OCS) ............................................... 41
Overview of occupant safety
systems ........................................... 34
Safety systems
see Driving safety systems
Seat backrest (rear)
Folding forwards/back ..................208
Seat belts
Adjusting the height ......................... 53
Belt force limiters ............................ 54
center rear-compartment seat .........53
Cleaning ......................................... 242
Correct usage .................................. 51
Emergency Tensioning Devices ........ 54
Fastening ......................................... 52
Important safety guidelines .............50
Releasing ......................................... 54
Safety guidelines ............................. 35
Special seat belt retractor ...............58
Warning lamp ................................. 196
Warning lamp (function) ................... 54
Seat heating
Indicator lamp (Malfunction) ............95
Seats
Adjusting (electrically) .....................92
Adjusting the 4-way lumbar
support ............................................ 94
Adjusting the head restraint ............93
Adjusting the lumbar support ..........94
Cleaning the cover .........................242
Correct driver's seat position ........... 90
Important safety notes ....................91
Storing settings (memory
function) ........................................ 100
Switching seat heating on/off .........95
Sensors (cleaning instructions) ....... 240
Service indicator see Service interval display
Service interval display .................... 236
Displaying a service message (on-
board computer) ............................ 237
Service menu (on-board computer) . 17012IndexBA 204.9 USA, CA Edition A 2011; 1; 6, en-USd2mwentsVersion: 3.0.3.62010-06-15T08:58:39+02:00 - Seite 12

Service productsBrake fluid ..................................... 298
Capacities ...................................... 295
Coolant (engine) ............................ 298
Engine oil ....................................... 297
Fuel ................................................ 296
Important safety notes ..................294
Notes ............................................. 294
Refrigerant (air-conditioning
system) .......................................... 298
Washer fluid ................................... 299
Settings
Factory (on-board computer) .........174
On-board computer .......................171
Shift ranges ....................................... 137
Side impact air bag ............................. 39
Side marker lamp (display
message) ............................................ 185
Side windows Convenience closing feature ............83
Convenience opening feature ..........83
Important safety information ...........81
Opening/closing .............................. 82
Resetting ......................................... 84
Troubleshooting ............................... 84
Sliding sunroof
Important safety information ...........85
Troubleshooting ............................... 88
see Panorama roof with power
tilt/sliding panel
SmartKey
Changing the battery .......................72
Changing the programming .............71
Checking the battery .................68, 72
Convenience closing feature ............83
Convenience opening feature ..........83
Display message ............................ 193
Important safety notes ....................68
Malfunction ...................................... 74
Starting the engine ........................131
Snow chains ...................................... 148
Socket ................................................ 217
Dashboard ..................................... 217
Luggage compartment ...................217
Rear compartment .........................217
SOS
see mbrace Spare wheel
Notes/data .................................... 289
Storage location ............................ 246
Stowing .......................................... 246
see Emergency spare wheel
Speedometer
Additional speedometer (on-
board computer) ............................ 166
Segments ...................................... 163
Setting the unit (on-board
computer) ...................................... 171
SRS (Supplemental Restraint
System) Display message ............................ 177
Introduction ..................................... 34
Warning lamp ................................. 199
Warning lamp (function) ................... 34
Standard display (on-board
computer) .......................................... 166
Starting the engine Important safety notes ..................130
Station
see Radio
Steering (display message) .............. 193
Steering wheel Adjusting (electrically) .....................96
Adjusting (manually) ........................96
Buttons (on-board computer) ......... 163
Cleaning ......................................... 241
Important safety notes ....................95
Memory function (storing
settings) ........................................... 96
Storing settings (memory
function) ........................................ 100
Stowage compartments
Armrest (under) ............................. 207
Glove box ....................................... 207
Stowage space
Cup holders ................................... 214
Important safety information .........206
Submenu (on-board computer)
Convenience .................................. 173
Factory setting ............................... 174
Instrument cluster .........................171
Lights ............................................. 172
Standard display ............................ 166
Time/Date ..................................... 171
Vehicle ........................................... 173Index13BA 204.9 USA, CA Edition A 2011; 1; 6, en-USd2mwentsVersion: 3.0.3.62010-06-15T08:58:39+02:00 - Seite 13

Summer openingsee Convenience opening feature
Sun visor ............................................ 215
Supplemental Restraint System see SRS
Surround lighting (on-board
computer) .......................................... 172
SUV (Sport Utility Vehicle) .......................19
Switching off the alarm (ATA) ............ 65
T
Tachometer ........................................ 163
Tailgate Display message ............................ 192
Emergency unlocking .......................81
Limiting the opening angle ...............80
Tail lamp (display message) ............. 184
Taillight see Tail lamps
Tank content
Fuel gauge ....................................... 26
Technical data ................................... 292
GLK 350 ........................................ 299
GLK 350 4MATIC ........................... 300
Tires/wheels ................................. 287
TELEAID
Call priority .................................... 223
Display message ............................ 177
Downloading destinations
(COMAND) ..................................... 223
Emergency call .............................. 220
Important safety notes ..................219
Locating a stolen vehicle ...............224
MB info call button ........................222
Remote vehicle locking ..................224
Roadside Assistance button ..........221
Self-test ......................................... 219
System .......................................... 219
Vehicle remote unlocking ..............223
Telephone
Accepting a call ............................. 170
Display message ............................ 193
Menu (on-board computer) ............169
Number from the phone book ........ 170
Redialing ........................................ 170
Rejecting/ending a call .................170
Telephone compartment .................. 207
Temperature Coolant .......................................... 162
Outside temperature ...................... 163
Setting ........................................... 121
Theft deterrent locking system
Immobilizer ...................................... 65
Time (on-board computer) ................ 171
Tire pressure Calling up (on-board computer) .....271
Checking manually ........................269
Display message ............................ 189
Maximum ....................................... 274
Notes ............................................. 267
Pressure loss warning ....................269
Recommended ............................... 266
Tire pressure monitoring system
Function/notes ............................. 271
Restarting ...................................... 273
Warning lamp ................................. 202
Tires
Aspect ratio (definition) .................286
Average weight of the vehicle
occupants (definition) ....................284
Bar (definition) ............................... 284
Characteristics .............................. 284
Checking ........................................ 265
Cleaning ......................................... 266
Definition of terms .........................284
Direction of rotation ......................278
Distribution of the vehicle
occupants (definition) ....................287
DOT, Tire Identification Number
(TIN) ............................................... 283
DOT (Department of
Transportation) (definition) ............284
Flat tire .......................................... 247
GAWR (Gross Axle Weight Rating)
(definition) ..................................... 285
GTW (Gross Trailer Weight)
(definition) ..................................... 285
Guidelines to be observed .............265
GVW (Gross Vehicle Weight)
(definition) ..................................... 285
GVWR (Gross Vehicle Weight
Rating) (definition) .........................285
Increased vehicle weight due to
optional equipment (definition) ......28414IndexBA 204.9 USA, CA Edition A 2011; 1; 6, en-USd2mwentsVersion: 3.0.3.62010-06-15T08:58:39+02:00 - Seite 14

V
Vanity mirror Sun visor ........................................ 215
Vehicle
Data acquisition ............................... 21
Emergency unlocking .......................77
Equipment ....................................... 17
Exterior view .................................... 24
Individual settings (on-board
computer) ...................................... 171
Loading .......................................... 274
Lowering ........................................ 252
Maintenance .................................... 18
Parking up ..................................... 144
Raising ........................................... 248
Reporting problems .........................20
Towing away .................................. 258
Tow-starting ................................... 258
Transporting .................................. 260
Vehicle data
see Technical data
Vehicle identification number
see VIN
Vehicle identification plate .............. 293
Vehicle tool kit .................................. 245
Video (DVD) ........................................ 169
Video DVD (on-board computer) ...... 169
VIN ...................................................... 293
W
Warning and indicator lamps ABS ................................................ 197
Brakes ........................................... 195
Check Engine ................................. 200
Coolant .......................................... 201
ESP ®
.............................................. 198
ESP ®
OFF ....................................... 199
Fuel tank ........................................ 200
Overview .......................................... 27
PASSENGER AIRBAG OFF
indicator lamp (only Canada) ...........46
PASSENGER AIRBAG OFF
indicator lamp (only USA) ................41
Reserve fuel ................................... 200
Seat belt ........................................ 196
SRS ................................................ 199
Tire pressure monitor ....................202
Warranty ............................................ 292
Washer fluid reservoir Removing/attaching ......................110
Wheel bolt tightening torque ........... 252
Wheel chock ...................................... 248
Wheels Changing/replacing .......................280
Changing a wheel .......................... 247
Checking ........................................ 265
Cleaning ......................................... 238
Guidelines to be observed .............265
Mounting a wheel .......................... 250
Removing a wheel ..........................250
Tightening torque ........................... 252
Wheel size/tire size .......................287
Window curtain air bag
Display message ............................ 178
Operation ......................................... 41
Windows
see Side windows
Windows (cleaning instructions) ..... 239
Windshield Defrosting ...................................... 122
Windshield washer fluid (display
message) ............................................ 193
Windshield washer system Adding washer fluid .......................235
Notes ............................................. 299
Windshield wipers
Important safety notes ..................113
Replacing the wiper blades ....114, 115
Switching on/off ........................... 113
Troubleshooting ............................. 116
Winter operation ............................... 149
Winter tires M+S tires ....................................... 148
Wiper blades
Cleaning ......................................... 23916IndexBA 204.9 USA, CA Edition A 2011; 1; 6, en-USd2mwentsVersion: 3.0.3.62010-06-15T08:58:39+02:00 - Seite 16

Warning and indicator lampsFunctionPage:High beam104;ESP®
OFF198=Low beam103?Turn signal104AESP ®198BTurn signal104CRear fog lamp104DTire pressure monitor202ESRS199FunctionPageFABS197GSeat belt196HFog lamp104ICoolant201JBrakes (USA only)195KBrakes (Canada only)195LEngine diagnostics200MReserve fuel200Instrument cluster27At a glanceBA 204.9 USA, CA Edition A 2011; 1; 6, en-USd2mwentsVersion: 3.0.3.62010-06-15T08:58:39+02:00 - Seite 27

Center consoleFunctionPage:Hazard warning lamps105;ATA indicator lamp65=Indicator lamp 45
(USA only)41
Indicator lamp 45
(Canada only)46
?ESP®63ACOMAND/audio system;
see the separate operating
instructions
BSeat heating95FunctionPageCPARKTRONIC151DStowage compartment206Ashtray215Cigarette lighter216ESelector lever134FCup holder214GStowage compartment206HAudio/COMAND controllerISelects the drive program137Center console29At a glanceBA 204.9 USA, CA Edition A 2011; 1; 6, en-USd2mwentsVersion: 3.0.3.62010-06-15T08:58:39+02:00 - Seite 29

Overhead control panelFunctionPage:u To switch the rear
interior lighting on/off
107
;| To switch the
automatic interior lighting
control on/off
107
=p To switch the right-
hand reading lamp on/off
106
?3 To open/close the
panorama roof with power
tilt/sliding panel with roller
sunblinds
86
Aï Button for MB info call
(mbrace system)
222
BG SOS button (mbrace
system)
220
CRear-view mirror97FunctionPageDIntegrated electronic
compass
227
EButtons for the garage door
opener
225
FMicrophone for mbrace
(emergency call system)
telephone and Voice
Control System 3GF
Roadside Assistance
button (mbrace system)
221
Hp To switch the left-
hand reading lamp on/off
106
Ic To switch the front
interior lighting on/off
1073 Voice Control System only available in connection with COMAND. Observe the additional operating
instructions.30Overhead control panelAt a glance
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Vehicle equipment
i This manual describes all the standard
and optional equipment of your vehicle
which was available at the time of
purchase. Country-specific differences are
possible. Bear in mind that your vehicle
may not feature all functions described
here. This also refers to safety-related
systems and functions.
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 systems are:
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
- USA only: front passenger seat with
Occupant Classification System (OCS)
- Canada only: front passenger seat with
BabySmart™ air bag deactivation system
The different air bag systems work
independently of each other. The protective
functions of the systems 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 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 consists of:
R the 6 SRS warning lamp
R air bags
R air bag control unit (with crash sensors)
R belt tensioners
R belt force limiters
SRS warning lamps
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.
34Occupant safetySafety
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