
ChildrenIn the vehicle ................................... 55
Restraint systems ............................ 56
Child seat
Automatic recognition .....................46
Automatic recognition/air bag
deactivation, self-test ......................48
Display message ............................ 177
LATCH-type (ISOFIX ) child seat
anchors ............................................ 58
Special seat belt retractor ...............58
Top Tether ....................................... 59
Troubleshooting ............................... 49
Cigarette lighter ................................ 216
Classification system for
occupants (OCS) Faults ............................................... 45
Operation ......................................... 41
System self-test ............................... 44
Climate control
Activating/deactivating .................120
Activating/deactivating air-
recirculation mode .........................123
Controlling automatically ...............121
Cooling with air dehumidification ..120
Defrosting the windshield ..............122
Demisting the windows .................. 123
Dual-zone automatic climate
control ........................................... 119
Important safety information .........118
Indicator lamp ................................ 121
Maximum cooling .......................... 122
Problems with "cooling with air
dehumidification" ........................... 121
Problems with the rear window
heating .......................................... 123
Refrigerant ..................................... 298
Setting the air distribution .............121
Setting the airflow .........................122
Setting the air vents ......................124
Setting the temperature ................121
Switching the MONO function on/
off .................................................. 122
Switching the rear window
heating on/off ............................... 123
Clock (on-board computer) ............... 171
Coat hooks ......................................... 212
Cockpit ................................................. 25Collapsible spare wheel
Inflating ......................................... 251
see Emergency spare wheel
Combination switch .......................... 104
Compass ............................................ 227
Consumption statistics (on-board
computer) .......................................... 166
Convenience closing feature .............. 83
Convenience opening feature ............ 83
Coolant (engine) Checking the level .........................234
Display message ............................ 186
Notes ............................................. 298
Temperature gauge ........................ 162
Warning lamp ................................. 201
Cooling
see Climate control
Cornering light (display message) ... 183
Crash-responsive emergency
lighting ............................................... 107
Cruise control Cruise control lever .......................150
Display message ............................ 189
Function/notes ............................. 149
Cup holder ......................................... 214
Center console .............................. 214
Rear compartment .........................214
Current fuel consumption (on-
board computer) ............................... 166
Customer Assistance Center (CAC) ............................................... 20
Customer Relations Department ....... 21
D
Dashboard see Cockpit
Date (on-board computer) ................ 171
Daytime running lamps Display message ............................ 186
Switching on/off (on-board
computer) ...................................... 172
Delayed switch-off
Exterior lighting (on-board
computer) ...................................... 172
Interior lighting (on-board
computer) ...................................... 173
Digital speedometer ......................... 166
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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

Instrument cluster
Overview
FunctionPage:Fuel gauge;Coolant temperature gauge162=Speedometer163?Segments163AMultifunction display164BTachometer163COutside temperature163DOutside temperature163Additional speedometer171FunctionPageEGear indicator and drive
program display
135
FClock171GBrightness control knob for
the instrument cluster
lighting: turn clockwise or
anti-clockwise26Instrument clusterAt a glance
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FunctioniNotes/tipsGReduces the airflowHDisplayISets the air distributionOperating the control systems
Switching the control on/off
Important information
GWarning!
When the climate control system is
deactivated, the outside air supply and
circulation are also deactivated. Only choose
this setting for a short time. Otherwise the
windows could fog up, impairing visibility and
endangering you and others.
i Activate climate control primarily using
the à button ( Y page 121).
Activating/deactivating
XTurn the key to position 2 in the ignition
lock.XTo activate: press the à button.
The indicator lamp in the à button lights
up. Airflow and air distribution are set to
automatic mode.
or
XPress the ^ button.
The indicator lamp in the ^ button goes
out. The previously selected settings come
into effect again.XTo deactivate: press the ^ button.
The indicator lamp in the ^ button lights
up.Switching cooling with air
dehumidification on/off
Important information
The cooling with air dehumidification function
is only available when the engine is running.
The air inside the vehicle is cooled and
dehumidified according to the temperature
selected.
GWarning
If you switch off the cooling function, the
vehicle will not be cooled when weather
conditions are warm. The windows can fog up
more quickly. Window fogging may impair
visibility and endanger you and others.
Condensation may drip from the underside of
the vehicle when automatic climate control is
in cooling mode. This is normal and not a sign
that there is a malfunction.
i The cooling with air dehumidification
function uses refrigerant R134a. This
coolant does not contain
chlorofluorocarbons, and therefore does
not damage the ozone layer.
Activating/deactivating
i The evaporator is ventilated when the air-
conditioning system is operated. The
blower switches on automatically
approximately one hour after the vehicle is
locked. The blower runs for 30 minutes on
the lowest level. The blower noise is normal
and not a sign that there is a malfunction.
If you unlock the vehicle during this time,
the ventilation will be interrupted. To save
battery power, the evaporator will not
120Operating the control systemsClimate control
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ProblemPossible causes/consequences and M SolutionsThe engine is not
running smoothly and
is misfiring.
There is a malfunction in the engine electronics or a mechanical
component of the engine management system.
XOnly depress the accelerator pedal slightly.XHave the cause rectified immediately at a qualified specialist
workshop.
Otherwise, non-combusted fuel may get into the catalytic
converter and damage it.
The coolant
temperature gauge
shows a value above
248 ‡(120 †).
The coolant level is too low. The coolant is too hot and the engine
is no longer being cooled sufficiently.
XStop as soon as possible and allow the engine and the coolant
to cool down.
XCheck the coolant level (Y page 234). Observe the warning
notes as you do so and add coolant if necessary.Automatic transmission
Important safety notes
GWarning
It is dangerous to shift AUTOTRONIC out of
parking position P or neutral position N if the
engine speed is higher than 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.
GWarning!
Keep in mind that turning off the engine alone
only will shift AUTOTRONIC into neutral
position N automatically.
Always shift AUTOTRONIC into park position
P before turning off the engine.
Otherwise the vehicle could roll away which
could result in an accident and/or serious
personal injury.
Selector lever
Overview of transmission positions
Selector lever
PPark position with selector lever lockRReverseNNeutralDDrive134Automatic transmissionDriving and parking
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brake using the brake controller, and check
the brakes for correct function.
R Secure any objects on the trailer to prevent
the cargo from slipping when the vehicle is
in motion.
R If you couple up a trailer, regularly check
the cargo for secure fastening and make
sure that the trailer lamps and (if
applicable) the trailer brakes are
functioning correctly.
R Bear in mind that the handling will be less
stable when towing a trailer than when
driving without one. Avoid sudden steering
movements.
R The vehicle/trailer combination is heavier,
accelerates more slowly, has a decreased
gradient climbing capability and a longer
braking distance.
It is more susceptible to side winds and
requires more careful steering.
R If possible, avoid abrupt braking. Depress
the brake pedal moderately at first, so that
the trailer can activate its own brakes. Then
increase the pressure on the brake pedal.
R If the automatic transmission continues to
shift back and forth between two gears
when driving up or downhill, restrict the
shift range. Select shift range 4, 3, 2, or 1.
A lower gear and lower speed reduce the
risk of engine failure.
R When driving downhill, shift to a lower gear
to utilize the engine's braking effect.
Avoid continuous brake application as this
may overheat the vehicle brakes and, if
installed, the trailer brakes.
R If the coolant temperature increases
dramatically while the air-conditioning
system is switched on, switch off the air-
conditioning system.
Coolant heat can additionally be dissipated
by opening the windows and by setting theblower fan and the interior temperature to
maximum.
R When overtaking, pay particular attention
to the extended length of your vehicle/
trailer combination.
Due to the length of your vehicle/trailer
combination, you will have to travel an
additional distance beyond the vehicle you
are overtaking before returning to the
previous lane.
Decoupling a trailer
XMake sure that the automatic transmission
is set to position P.XApply the vehicle's parking brake.XClose all doors and the tailgate.XApply the trailer's parking brake.XDetach the trailer cable and decouple the
trailer.XDetach the trailer cable and decouple the
trailer.
Permissible trailer load and drawbar
noseweight
Weight specifications
The Gross Trailer Weight (GTW) is the
combined weight of the trailer together with
the cargo and equipment loaded on the
trailer. Permissible gross weight: 3500 lb
(1588 kg).
The permissible Trailer drawbar Weight
Rating (TWR) is the maximum weight
permitted on the trailer drawbar: 280 lb
(127 kg) limit for Mercedes-Benz-approved
trailer couplings.
Loading a trailer
R When loading a trailer, please note that
neither the permissible gross trailer weight
nor the permissible Gross Vehicle Weight
Rating (GVWR) may be exceeded. The
permissible Gross Vehicle Weight Rating
158Towing a trailerDriving and parking
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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.
Important safety notes
You will find an illustration of the instrument
cluster in the "At a glance" section
( Y page 26).
GWarning
A driver's attention to the road and traffic
conditions must always be his/her primary
focus when driving.
For your safety and the safety of others,
selecting features through the multifunction
steering wheel should only be done by the
driver when traffic and road conditions permit
it to be done safely.
Bear in mind that at a speed of just 30 mph
(approximately 50 km/h ), your vehicle is
covering a distance of 44 feet (approximately
14 m) every second.
GWarning!
No messages will be displayed if either the
instrument cluster or the multifunction
display is inoperative.
As a result, you will not be able to see
information about your driving conditions,
such as
R speed
R outside temperature
R warning/indicator lamps
R malfunction/warning messages
R failure of any systems
Driving characteristics may be impaired.
If you must continue to drive, do so with added
caution. Contact an authorized Mercedes-
Benz Center as soon as possible.GWarning
Malfunction and warning messages are only
indicated for certain systems and are
intentionally not very detailed. The
malfunction and warning messages are
simply a reminder with respect to the
operation of certain systems. They do not
replace the owner's and/or driver's
responsibility to maintain the vehicle's
operating safety. Have all required
maintenance and safety checks performed on
the vehicle. Bring the vehicle to an authorized
Mercedes-Benz Center to address the
malfunction and warning messages.
Displays and operation
Coolant temperature gauge
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.
The coolant temperature gauge is in the
instrument cluster on the right-hand side.
Under normal operating conditions and with
the specified coolant level, the coolant
temperature may rise to 248 ‡ (120 †).
! If the coolant temperature is too high a
display message is shown.
162Displays and operationOn-board computer and displays
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If the coolant temperature rises above
248 ‡(120 †), do not drive any further as
this could damage the engine.
Tachometer
The red band in the tachometer indicates the
engine's overrevving range.
! Do not drive in the overrevving range, as
this could damage the engine.
The fuel supply is interrupted to protect the
engine when the red band is reached.
Outside temperature display
The outside temperature display is in the
multifunction display.
GWarning!
The outside temperature indicator is not
designed to serve as an ice-warning device
and is therefore unsuitable for that purpose.
Indicated temperatures just above the
freezing point do not guarantee that the road
surface is free of ice. The road may still be icy,
especially in wooded areas or on bridges.
Changes in the outside temperature are
displayed after a short delay.
Speedometer with segments
The segments in the speedometer indicate
which speed range is available.
Cruise control mode:
The segments light up from the stored speed
to the maximum speed.
Operating the on-board computer
The on-board computer is activated as soon
as you turn the SmartKey to position 1 in the
ignition lock.
You can control the multifunction display and
the settings in the on-board computer using
the buttons on the multifunction steering
wheel.:Multifunction display;~6
Makes/accepts or rejects/ends a
call
WX
Adjusts the volume
8
Mute=?
Activates voice control; see the
separate operating instructions?% Press briefly:
Back
Deactivates voice control
Hides display messages% Press and hold:
Selects the standard displayA=;
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