
Electronic Traction Systemsee ETS/4-ETS                                          
Emergency, in case of  
First aid kit ..................................... 260
Flat tire  .......................................... 312
Hazard warning flasher  ....................90
Roadside Assistance ................ 20, 203
Towing the vehicle  .........................321
Emergency calls  
Tele Aid  .......................................... 201
Telephone  ...................................... 161
Emergency operations  
Remote door lock (Tele Aid) ........... 205
Remote door unlock (Tele Aid)  .......204
Emergency Tensioning Device
see ETD                                                     
Emission control  ............................... 249
Information label ............................ 329
System warranties  ...........................19
Engine  
Break-in recommendations  ............212
Cleaning ......................................... 253
Compartment  ................................ 214
Malfunction indicator lamp  ............295
Messages in the multifunction
display  ........................................... 279
Number .......................................... 329
Starting  ............................................ 98
Turning off  ..................................... 102
Engine (Technical data)
see Vehicle specification                          
Engine coolant
see Coolant                                               
Engine oil  
Adding  ........................................... 216
Additives  ........................................ 336
Checking level  ............................... 215
Consumption  ................................. 215
Messages in the multifunction
display  ........................................... 282
Oil dipstick ..................................... 215
Recommended engine oils and oil
filter  ............................................... 335
ESP ®
 (Electronic Stability
Program)  .............................................. 61
ETS/4-ETS  ....................................... 62Messages in the multifunction
display  ........................... 271, 272, 274
Trailer stabilization ........................... 63
Warning lamp ................................. 293
ETD (Emergency Tensioning
Device)  ................................................. 51
Safety guidelines  ............................. 39
ETS/4-ETS (Electronic Traction
System)  ................................................ 62
Express operation  
Panorama roof  ............................... 185
Power windows  ................................ 95
Exterior lamp switch  ........................... 87
Exterior rear view mirrors  .................. 84
Fold-in function  ................................ 86
Parking position  ............................... 85
Power-folding  ................................... 85
Switching fold-in function on or
off  .................................................. 124
Exterior view of vehicle  ...................... 26
F
Fastening the seat belts  ..................... 49
First aid kit  ......................................... 260
Flat tire  ............................................... 312
Lowering the vehicle  ......................317
Mounting the spare wheel  .............312
Preparing the vehicle  .....................312
Spare wheel ........................... 312, 333
Floormats  ........................................... 209
Fluids  
Automatic transmission fluid  .........334
Brake fluid  ..................................... 334
Capacities  ...................................... 334
Engine coolant  ............................... 334
Engine oil  ....................................... 334
Power steering fluid  .......................334
Washer and headlamp cleaning
system  ........................................... 335
Fog lamps  ............................................. 89
Messages in the multifunction
display  ................................... 283, 285
Fold-in function for exterior rear
view mirrors  ........................................ 86
Four-wheel drive see All-wheel drive (4MATIC)                    
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L
Labels  
Certification  ................................... 328
Emission control information  .........329
Tire and Loading Information
placard ........................................... 227
Tire inflation pressure  ....................220
Lamps, exterior  
Exterior lamp switch  ........................87
Front  .............................................. 304
Messages in the multifunction
display  ........................................... 283
Rear  ............................................... 305
Switching on/off .............................. 87
Lamps, indicator and warning  
ABS .......................................... 28, 289
Brakes  ..................................... 28, 289
Center console  ................................ 31
Coolant  .................................... 28, 295
Engine malfunction  ..................28, 295
ESP ®
 ........................................ 28, 293
Fog lamps  ........................................ 89
Front fog lamps ................................ 28
Front passenger front air bag off
(Canada only)  .......................... 45, 297
Front passenger front air bag off
(USA only) ................................ 42, 298
Fuel tank reserve  .....................28, 294
High-beam headlamps  ...............28, 90
Instrument cluster  ...................28, 288
Low-beam headlamps  ................28, 88
Low tire pressure/TPMS
malfunction telltale  ..................28, 296
Rear fog lamp  .................................. 28
Seat belt telltale  ................28, 50, 292
SRS .................................... 28, 36, 293
Turn signals  ..................................... 28
LATCH-type child seat anchors (ISOFIX)
see Children in the vehicle                        
License plate lamps  
Messages in the multifunction
display  ........................................... 285
Replacing bulbs  ............................. 305
Light alloy wheels, cleaning  ............. 256
Lighter see Cigarette lighter                                 Lighting ................................................ 87
Daytime running lamp mode  ............88
Exterior  ............................................ 87
Interior  ............................................. 92
Limp-home mode  .............................. 108
Load index (tires)  ...................... 235, 240
Loading see Vehicle loading                                   
Locator lighting  ................................. 122
Locking the vehicle  
KEYLESS-GO  .................................... 67
Manually  ........................................ 299
SmartKey  ......................................... 66
Loss of  
Key  .................................................. 69
Service and Warranty Information
booklet  .......................................... 328
Low-beam headlamps  ......................... 88
Exterior lamp switch  ........................87
Replacing bulbs  ............................. 304
Switching on  .................................... 88
Lubricants  .......................................... 334
Lumbar support  ................................... 80
M
Maintenance  ........................................ 20
Maintenance System  
Service indicator display  ................251
Service indicator message  .............250
Service term exceeded  ..................250
Manual headlamp mode (Low-
beam headlamps)  ................................ 88
Maximum engine speed see Vehicle specification                          
Maximum loaded vehicle weight  ..... 240
Maximum load rating (tires)  ............. 240
Maximum permissible tire
inflation pressure  .............................. 240
Mechanical key see Key, Mechanical                                 
Media interface  ................................. 192
Memory function  ........................... 33, 86
Menus see Control system menus                       
Mirrors  .................................................. 83
Auto-dimming rear view mirrors ....... 84
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Exterior rear view mirror parking
position  ............................................ 85
Exterior rear view mirrors  ................84
Interior rear view mirror  ...................84
Memory function .............................. 86
Power-folding exterior rear view
mirrors  ............................................. 85
Vanity mirror  .................................. 196
MON (Motor Octane Number)  .......... 337
Motor Octane Number see MON                                                   
MP3 mode  .......................................... 146
Multifunction display  ........................ 112
Symbol messages  ..........................270
Text messages  ............................... 264
Vehicle status messages  ...............262
Multifunction display messages  
ABS  ....................................... 271, 272
Active headlamps  .......................... 283
Advanced TPMS  ............................. 268
Air bags  ......................................... 264
Alternator  ...................................... 281
Battery  ........................................... 281
Brake fluid  ..................................... 273
Brake pads ..................................... 270
Cargo compartment ....................... 277
Child seat  ...................................... 267
Coolant  .......................................... 279
Corner-illuminating lamps  ..............286
Cruise control  ................................ 267
Doors  ............................................. 277
EBP  ................................................ 272
Engine oil  ....................................... 282
ESP ®
 ............................. 271, 272, 274
Fog lamps  .............................. 283, 285
Front passenger front air bag  ........264
Gas cap .......................................... 282
High-beam lamps  ........................... 284
Hood  .............................................. 277
License plate lamps  .......................285
Light sensor  ................................... 285
Low-beam lamps ............................ 285
Parking brake  ................................ 272
Parking lamps  ................................ 284
Power steering  ............................... 279
Reserve fuel  ................................... 282
Reverse lamp  ................................. 283
Side marker lamps  .........................284SmartKey ....................................... 277
SmartKey with KEYLESS-GO  ..........277
SRS  ................................................ 275
Tailgate  .......................................... 277
Tail lamps  ...................................... 286
Tele Aid  .......................................... 275
Tire inflation pressure  ............268, 288
Tire pressure monitor  ....................268
Tires  ...................................... 268, 288
Trailer brake lamps  ........................286
Trailer tail lamps  ............................ 286
Trailer turn signal lamps  ................287
Turn signals  ................................... 287
Multifunction steering wheel  
Adjustment  ...................................... 82
Buttons  .......................................... 110
Cleaning ......................................... 256
Easy-entry/exit feature  ...........83, 124
Memory function .............................. 86
Overview  .......................................... 29
N
Navigation system see Separate operating instructions         
Navi menu  .......................................... 115
NECK-PRO active front head
restraints  ............................................. 51
Resetting  ....................................... 301
Nets, parcel  ....................................... 188
Normal occupant weight  .................. 240
Number, vehicle identification
(VIN)  ................................................... 329
O
Occupant Classification System see OCS (Occupant Classification
System)                                                     
Occupant distribution  ....................... 240
Occupant safety  
Air bags  ........................................... 37
BabySmart™  .................................... 45
Children and air bags  .......................37
Children in the vehicle  .....................53
Child seat anchors – LATCH-type
(ISOFIX)  ........................................... 57
Fastening the seat belts ................... 49
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Self-test 
BabySmart™  .................................... 46
OCS (Occupant Classification
System)  ........................................... 45
Tele Aid  .......................................... 201
Service
see Maintenance                                       
Service, parts  .................................... 328
Service and warranty information  ..... 19
Service intervals see Maintenance System, Service
indicator message                                     
Service life (tires)  .............................. 232
Service menu  ..................................... 118
Settings  
Factory setting (KEYLESS-GO)  .........69
Factory setting (SmartKey)  ..............67
Memory function .............................. 86
Menu  ............................................. 119
Selective setting (KEYLESS-GO)  .......69
Selective setting (SmartKey)  ............67
Side impact air bags  ........................... 40
Side marker lamps  
Cleaning lenses  ............................. 254
Messages in the multifunction
display  ........................................... 284
Replacing bulbs  ............................. 304
Sidewall (tires)  .................................. 241
SmartKey see Key, SmartKey                                    
SmartKey with KEYLESS-GO
see Key, SmartKey                                    
Snow chains  ...................................... 242
Snow tires see Winter tires                                         
Spare wheel  ....................................... 331
Mounting  ....................................... 312
Storage location  ............................ 262
Speedometer  ....................................... 28
Speed settings  
Cruise control  ................................ 169
Resume function  ............................ 170
Sport Utility Vehicle
see SUV                                                    SRS (Supplemental Restraint System)  
Indicator lamp  ......................... 36, 293
Messages in the multifunction
display  ........................................... 275
Standing water, driving through  ...... 246
Starter switch positions  
KEYLESS-GO  .................................... 76
SmartKey  ......................................... 76
Starting difficulties (engine)  .............. 99
Starting the engine  ............................. 98
Steering column see Multifunction steering wheel,
Adjustment                                               
Steering wheel
see Multifunction steering wheel              
Stolen Vehicle Recovery Services  ... 205
Storage compartments  ..................... 192
Storing tires  ....................................... 233
Stranded vehicle  ............................... 324
Sun visors  .................................. 195, 196
SUV (Sport Utility Vehicle)  ................. 21
T
Tachometer  .................................. 28, 109
Overspeed range  ........................... 109
Tailgate  
Closing  ............................................. 71
Messages in the multifunction
display  ........................................... 277
Opening  ........................................... 71
Power tailgate  .................................. 72
Unlocking manually  .......................300
Tail lamps  ........................................... 305
Cleaning lenses  ............................. 254
Messages in the multifunction
display  ........................................... 286
Replacing bulbs  ............................. 305
Tar stains  ........................................... 252
Technical data  
Air conditioning refrigerant  ....335, 336
Brake fluid  ............................. 334, 336
Capacities fuels, coolants,
lubricants etc.  ................................ 334
Coolant  .................................. 334, 337
Engine oil additives  ........................336
Engine oils  ............................. 334, 335
Fuel requirements .......................... 337
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Gasoline additives .......................... 337
Identification labels  .......................328
Premium unleaded gasoline  ...........336
Rims and tires  ................................ 331
Spare wheel  ................................... 333
Vehicle specification GLK 350  .......330
Vehicle specification
GLK 350 4MATIC  ........................... 330
Washer and headlamp cleaning
system  ................................... 335, 339
Technical data (dimensions)
see Vehicle specification                          
Technical data (electrical system)
see Vehicle specification                          
Technical data (engine)
see Vehicle specification                          
Technical data (weights)
see Vehicle specification                          
Tele Aid  ............................................... 200
Emergency calls  ............................. 201
Information button  .........................203
Initiating an emergency call
manually  ........................................ 202
Messages in the multifunction
display  ........................................... 275
Remote door lock  .......................... 205
Remote door unlock  ......................204
Roadside Assistance button  ..........203
Search & Send  ............................... 204
SOS button  .................................... 202
Stolen Vehicle Recovery Services  ..205
System self-test  ............................. 201
Telephone  .................................... 29, 155
Answering/ending a call  ................117
Call lists  ......................................... 164
Emergency calls “911”  ..................161
Hands-free microphone  ...................32
Making calls ................................... 165
Menu  ............................................. 117
Operation ....................................... 117
Phone book  ........................... 117, 162
Redialing  ........................................ 118
Temperature  
Coolant  .......................................... 109
Interior temperature  ......................180
Outside  .......................................... 110
Tether anchorage points
see Children in the vehicle                        Tie-down rings ................................... 188
Tightening torque  
Wheels  ........................................... 317
Time setting  ....................................... 121
TIN (Tire Identification Number)  ...... 241
Tire and Loading Information
placard  ............................................... 227
Tire and loading terminology  ........... 239
Tire Identification Number see TIN                                                      
Tire inflation pressure  
Checking ........................................ 221
Important notes on  ........................220
Label on the inside of fuel filler
flap  ................................................ 220
Placard on driver’s door B-pillar  .....227
Tire labeling  ....................................... 235
Tire load rating  .................................. 240
Tire ply composition and material
used  .................................................... 241
Tire pressure loss warning system  . 222
Tires  ........................................... 218, 331
Advanced Tire Pressure
Monitoring System (Advanced
TPMS)  ............................................ 224
Air pressure  ................................... 219
Care and maintenance  ...................232
Cleaning ......................................... 233
Direction of rotation, spinning  .......231
Important notes on tire inflation
pressure  ........................................ 220
Inflation pressure  ........................... 221
Information placard  .......................227
Inspection  ...................................... 232
Labeling  ......................................... 235
Load index  ............................. 235, 240
Load rating  .................................... 240
Messages in the multifunction
display  ................................... 268, 288
Ply composition and material
used ............................................... 241
Problems under-/overinflation  ......221
Retreads  ........................................ 218
Rims and tires (technical data)  ......331
Rotation  ......................................... 234
Service life  ..................................... 232
Sizes  .............................................. 331
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Instrument clusterFunctionPage:Combination gauge with:Fuel gauge8 Fuel tank reserve
warning lamp  294
Coolant temperature gauge? Coolant temperature
warning lamp  295
Indicator/warning lamps:K High-beam headlamp
indicator lamp90
L Low-beam headlamp
indicator lamp88
; Engine malfunction
indicator lamp 295
$ Brake warning lamp,
USA only 291
J Brake warning lamp,
Canada only291
;# Left turn signal
indicator lamp  90
=d ESP® warning lamp 293FunctionPage?Speedometer AMultifunction display112B! Right turn signal
indicator lamp90
CTachometer with: N Front fog lamps
indicator lamp 89
R Rear fog lamp
indicator lamp 89
h Combination low tire
pressure/TPMS
malfunction telltale, USA
only 
224,
296
6 Supplemental
Restraint System (SRS)
indicator lamp 
36,
293
! Antilock Brake
System (ABS) indicator
lamp 289
7 Seat belt telltale 50,
292
28Instrument clusterAt a glance
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idle speed. If your foot is not firmly on the
brake pedal, the vehicle could accelerate
quickly forward or in reverse. You could lose
control of the vehicle and hit someone or
something. Only shift into gear when the
engine is idling normally and when your right
foot is firmly on the brake pedal.
!  Only shift the automatic transmission into
reverse gear  R or park position  P when the
vehicle is stopped. Otherwise the
automatic transmission could be damaged.XDepress the brake pedal.
The gear selector lever lock is released.XShift the automatic transmission into drive
position  D or reverse gear  R.
i
Shifting the automatic transmission out of
park position  P is only possible with the
brake pedal depressed.
Only depressing the brake pedal releases
the gear selector lever lock.
XWait for the gear selection process to
complete before setting the vehicle in
motion.XIf engaged, release the parking brake.XRelease the brake pedal.XCarefully depress the accelerator pedal.
After a cold start, the automatic transmission
shifts at a higher engine speed. This allows
the catalytic converter to reach its operating
temperature earlier.
For more information on driving, see “Driving
instructions” ( Y page 243).
Problems while driving
The engine runs erratically and misfires
R An ignition cable may be damaged.
R The engine electronics may not be
operating properly.
R Unburned gasoline may have entered the
catalytic converter and damaged it.
XGive very little gas.XHave the problem checked at an authorized
Mercedes-Benz Center as soon as possible.
The coolant temperature is above 
248‡ (120†)
The coolant is too hot and is no longer cooling
the engine.
XStop the vehicle in a safe location as soon
as possible.XTurn off the engine immediately.XAllow the engine and coolant to cool off.XCheck the coolant level and add coolant if
necessary ( Y page 216).
In case of accident 
If the vehicle is leaking fuel:
XDo not start the engine under any
circumstances.XExit the vehicle at a safe distance from the
roadway.XNotify local fire and/or police authorities.
If the extent of the damage cannot be
determined:
XContact an authorized Mercedes-Benz
Center or call Roadside Assistance.
If no damage on major assemblies, fuel
system, and engine mount can be
determined:
XStart the engine in the usual manner.
Parking
GWarning!
Do not park this vehicle in areas where
combustible materials such as grass, hay or
leaves can come into contact with the hot
exhaust system. These materials could be
ignited and cause a vehicle fire.
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If you must continue to drive, do so with added
caution. Contact an authorized Mercedes-
Benz Center as soon as possible.
The language setting for the multifunction
display can be changed with the audio system
(Y page 136) or with the COMAND system.
Vehicles with COMAND system: Refer to
separate operating instructions.
Activating the instrument cluster
The instrument cluster is activated when you
Ropen the driver’s door
Rswitch on the ignition
Adjusting the instrument cluster 
illumination
XTo brighten illumination: Turn
dimmer : clockwise.
XTo dim illumination: Turn dimmer :
counterclockwise.
iThe instrument cluster illumination is
dimmed or brightened automatically to suit
ambient light conditions.
The instrument cluster illumination will also
be adjusted automatically when you switch
on the vehicle’s exterior lamps.
Coolant temperature gauge
The coolant temperature gauge is located on
the left side in the instrument cluster
(Y page 28).
GWarning!
Driving when your engine is overheated can
cause some fluids which may have leaked into
the engine compartment to catch fire. You
could be seriously burned.
Steam from an overheated engine can cause
serious burns which can occur just by opening
the engine hood. Stay away from the engine
if you see or hear steam coming from it.
Stop the vehicle in a safe location away from
other traffic. Turn off the engine, get out of the
vehicle and do not stand near the vehicle until
the engine has cooled down.
During severe operating conditions, e.g. stop-
and-go traffic, the coolant temperature may
rise close to 248‡ (120†), i.e close to the
red zone of the temperature gauge.
! Excessive coolant temperature triggers a
warning in the multifunction display.
The engine should not be operated with a
coolant temperature above 248‡ (120†),
i.e. in the red zone of the coolant
temperature gauge. Doing so may cause
serious engine damage which is not
covered by the Mercedes-Benz Limited
Warranty.
Tachometer
The red marking on the tachometer
(Y page 28) denotes excessive engine speed.
! Avoid driving at excessive engine speeds,
as it may result in serious engine damage
that is not covered by the Mercedes-Benz
Limited Warranty.
To help protect the engine, the fuel supply is
interrupted if the engine is operated within
the red marking.
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