
CD/DVDEjecting (Rear Seat Entertainment
System) ......................................... 248
Inserting (Rear Seat
Entertainment System) ..................247
CD player/CD changer
Operation (COMAND) ....................217
Center console ..................................... 35
Central locking Activating/deactivating
(COMAND) ..................................... 261
SmartKey ......................................... 76
Changing bulbs
Headlamps ..................................... 278
Changing direction
Announcement phase ....................164
Change of direction phase .............165
Preparation phase .........................164
Changing gears .................................. 309
Changing the programming SmartKey ......................................... 79
Channel presets ................................ 209
Character entry ................................. 127
Characters Entering ................................. 128, 130
Child-proof locks
Rear doors ....................................... 65
Children
In the vehicle ................................... 60
Restraint systems ............................ 61
Child seat
LATCH-type (ISOFIX ) child seat
anchors ............................................ 63
Special seat belt retractor ...............62
Top Tether ....................................... 64
Cigarette lighter ................................ 431
City Entering ......................................... 152
Classification system for
occupants (OCS) Faults ............................................... 52
Operation ......................................... 48
System self-test ............................... 51
Climate control
Activating/deactivating .................288
Activating/deactivating air-
recirculation mode .........................293Automatic climate control .............287
COMAND ....................................... 261
Controlling automatically ...............289
Controlling centrally (COMAND) ....264
Cooling with air dehumidification ..289
Cooling with air dehumidification
(COMAND) ..................................... 263
Defrosting the windshield ..............292
Demisting the windows .................. 293
Important safety information .........286
Indicator lamp ................................ 289
Main menu ..................................... 263
Maximum cooling .......................... 292
Problems with "cooling with air
dehumidification" ........................... 289
Problems with the rear window
heating .......................................... 293
Rear compartment (COMAND) ......265
Rear control panel .........................288
Refrigerant ..................................... 514
Setting the air distribution .............291
Setting the airflow .........................292
Setting the airflow (COMAND) .......265
Setting the air vents ......................295
Setting the footwell temperature
(COMAND) ..................................... 264
Setting the temperature ................290
Setting the temperature (rear
compartment) ................................ 291
Switching the rear window
heating on/off ............................... 293
Switching the residual heat
function on/off .............................. 294
Coat hooks ......................................... 424
Cockpit ................................................. 31
COMAND Basic functions .............................. 131
Components .................................. 116
Function buttons ........................... 117
Switching on/off ........................... 131
COMAND controller ........................... 116
COMAND display ............................... 119
Cleaning instructions .....................123
Folding in and swiveling .................122
Setting ........................................... 141
COMAND menu
Automatic climate control .............261Index7

Head restraintsAdjusting (electrically) ...................104
Adjusting (rear) .............................. 105
see NECK-PRO head restraints/
NECK-PRO luxury head restraints
Heating
see Climate control
High beam flasher ............................. 276
Hill start assist .................................. 302
HOLD function ................................... 335
HOLD function (display message) ... 403
Home address ................................... 175
Entering and saving .......................154
Selecting from the destination
memory ......................................... 156
Hood
Closing ........................................... 447
Display message ............................ 410
Opening ......................................... 446
Hydroplaning ..................................... 322
I
Immobilizer .......................................... 73
Incident (traffic report) ..................... 172
Indicator and warning lamps DISTRONIC PLUS ........................... 419
Insect protection on the radiator .... 447
Instrument cluster Overview .......................................... 32
Submenu (on-board computer) ......377
Warning and indicator lamps ...........33
Interior lighting
Ambient light (COMAND) ...............260
Automatic control ..........................278
Interior lighting .............................. 259
Manual control ............................... 278
Reading lamp ................................. 277
Intermediate stop
Deleting ......................................... 160
Intermediate top
Entering ......................................... 158
iPod ®
Alphabetic track selection .............233
Connecting to the Media
Interface ........................................ 229
Device version ............................... 229
Selecting a category/playlist .........232
iTunes®
............................................... 233
J
Jack Storage location ............................ 462
Using ............................................. 464
Jump-starting ..................................... 471
K
KEYLESS-GO Button ............................................ 299
Convenience closing feature ............91
Display message ............................ 411
Locking ............................................ 77
Starting the engine ........................301
Unlocking ......................................... 77
Key positions
KEYLESS-GO .................................. 299
SmartKey ....................................... 299
Kickdown ................................... 309, 312
L
Lane-change assistant see Active Blind Spot Assist
see Blind Spot Assist
Lane Keeping Assist
Activating/deactivating (on-
board computer) ............................ 376
Display message ............................ 404
Function/information ....................354
Lane recommendations .................... 165
Explanation .................................... 167
Presentation .................................. 167
LATCH-type (ISOFIX) child seat
anchors ................................................ 63
License plate lamp (display
message) ............................................ 395
Lights Automatic headlamp mode ............273
Cornering light function .................277
Daytime running lamps ..................273
Driving abroad ............................... 272
Fog lamps ...................................... 274
Hazard warning lamps ...................276
High-beam headlamps ...................275
Light switch ................................... 272
12Index

recommend that you always place a child
in a rear-facing child restraint on the rear
seat.
RIf you install a rear-facing child restraint on
the front-passenger seat, make sure the
42 indicator lamp is
illuminated, indicating that the front-
passenger front air bag is deactivated.
Should the 42 indicator lamp
not illuminate or go out while the restraint
is installed, please check installation.
Periodically check the 42
indicator lamp while driving to make sure
the 42 indicator lamp is
illuminated. If the 42 indicator
lamp goes out or remains out, do not
transport a child on the front-passenger
seat until the system has been repaired.
A child in a rear-facing child restraint on the
front-passenger seat will be seriously
injured or even killed if the front-passenger
front air bag inflates.
RIf you place a child in a forward-facing child
restraint on the front-passenger seat:
-move the seat as far back as possible
-use the proper child restraint
recommended for the age, size and
weight of the child
-secure child restraint with the vehicle's
seat belt according to the child seat
manufacturer's instructions
RFor children larger than a typical 12-month-
old child, the front-passenger front air bag
can be activated or deactivated.
Deployment of the driver front air bag does
not mean that the front-passenger front air
bag should also have deployed.
OCS may have determined:
Rthat the seat was unoccupied or occupied
by a weight of up to or less than that of a
typical 12-month-old child seated in a
standard child restraint
Rthat the seat was occupied by a small
individual (e.g. a young teenager or a small
adult) or a child who weighs more than a
typical 12-month-old child in a standard
child restraint system
These are examples of when OCS deactivates
the front-passenger front air bag. The air bag
is deactivated despite the impact fulfilling the
criteria for deploying the driver's front air bag.
If the SmartKey has been removed from the
ignition lock or is in position 0, indicator lamp
42: does not light up.
GWarning
If the red SRS 6 indicator lamp in the
instrument cluster and the 42
indicator lamp are lit at the same time, there
is a malfunction in the OCS. The front
passenger front air bag will be deactivated in
this case. Have the system checked by
qualified technicians as soon as possible.
Contact an authorized Mercedes-Benz
Center.
Only have the seat repaired or replaced at an
authorized Mercedes-Benz Center.
In order to ensure proper operation of the air
bag system and OCS:
RSit with the seat belt properly fastened in a
position that is as upright as possible with
your back against the seat backrest.
RWhen seated, a passenger should not
position him/herself in such a way as to
cause the passenger's weight to be lifted
from the seat cushion as this may result in
the OCS being unable to correctly
50Occupant safetySafety

approximate the passenger's weight
category.
R Read and observe all warnings in this
chapter.
System self-test
The 42 indicator lamp
illuminates when you:
R turn the SmartKey to position 1 or 2 in the
ignition lock
R press the KEYLESS-GO Start/Stop button
once or twice
If an adult occupant is properly sitting on the
passenger seat and the OCS classifies the
occupant as an adult, the 42
indicator lamp illuminates and goes out again
after approximately 6 seconds.
If the seat is not occupied and the OCS
classifies the front passenger seat as being
unoccupied, the 4 indicator
lamp 2 will illuminate and not go out.
GWarning!
If the 4 2 indicator lamp does
not illuminate, the system is not functioning.
You must contact an authorized Mercedes-
Benz Center before seating any child on the
front passenger seat.
For more information, see "Problems with the
Occupant Classification System"
( Y page 52).
GWarning
Never place anything between seat cushion
and child seat (e.g. a pillow), since it reduces
the effectiveness of the OCS. The underside
and rear side child restraint system must be
placed entirely on the seat cushion and the
backrest of the front-passenger seat
backrest.
If necessary, adjust the tilt of the passenger
seat backrest.
An incorrectly mounted child seat could cause
injuries to the child in case of an accident,
instead of increasing protection for the child.
Follow the manufacturer's instructions for
installation of child restraint systems.Occupant safety51SafetyZ

XEngage belt tongue ; in buckle =.
Seat-belt adjustment: if necessary, the
driver's and front-passenger seat belts
automatically adjust to the upper body
(Y page 58).
XIf necessary, adjust the seat belt to the
appropriate height (Y page 58).
XIf necessary, pull upwards on the shoulder
section of the seat belt to tighten the belt
across your body.
All seat belts in the vehicle, except the
driver's seat belt, are equipped with a special
seat belt retractor to secure child restraint
systems properly. For further information on
"Special seat belt retractors", see
(Y page 62).
For more information about releasing the seat
belt with release button ?, see "Releasing
seat belts" (Y page 58).
Seat belt adjustment
The seat-belt adjustment function adjusts the
driver's and front-passenger seat belt to the
upper body of the occupants.
The belt strap is tightened slightly when:
Ryou engage the belt tongue in the belt
buckle and you then turn the SmartKey to
position 2 in the ignition lock.
Rthe SmartKey is in position 2 in the ignition
lock and you then engage the belt tongue
in the buckle.
The seat-belt adjustment will apply a certain
tightening force if any slack is detected
between the occupant and the seat belt. Do
not hold on to the seat belt tightly while it is
adjusting. You can switch the seat-belt
adjustment on and off in the on-board
computer (Y page 378).
Seat belt outlet height adjustment
You can adjust the seat belt height on the
driver's seat and the front-passenger seat.
Adjust the height so that the upper part of the
seat belt is routed across the center of your
shoulder.
XTo raise: slide the belt sash guide upwards.
The belt sash guide engages in various
positions.
XTo lower: press and hold belt sash guide
release :.
XSlide the belt sash guide downwards.XRelease belt sash guide release : and
make sure that the belt sash guide has
engaged.
The outer seat belts in the rear compartment
are adjusted automatically.
Releasing seat belts
XPress release button ? (Y page 57) and
guide belt tongue ; back towards belt
sash guide :.
! Make sure that the seat belt is fully rolled
up. Otherwise, the seat belt or belt tongue
will be trapped in the door or in the seat
mechanism. This could damage the door,
the door trim panel and the seat belt.
Damaged seat belts can no longer fulfill
their protective function and must be
replaced. Consult an authorized Mercedes-
Benz Center.
Belt warning for driver and front
passenger
Regardless of whether the driver's and front-
passenger seat belts have already been
58Occupant safetySafety

The belt tensioners are triggered depending
on the type and severity of an accident:
R in the event of a head-on or rear-end
collision, if the vehicle decelerates or
accelerates rapidly in a longitudinal
direction during the initial stages of the
impact
R in the event of a side impact, on the side
opposite the impact if the vehicle
decelerates or accelerates rapidly in a
lateral direction
R in certain situations, if the vehicle
overturns and the system determines that
it can provide additional protection
If the air bags are deployed, you will hear a
bang and a small amount of powder may also
be released. Only in rare cases will the bang
affect your hearing. The powder that is
released generally does not constitute a
health hazard. The 6 SRS warning lamp
lights up.GWarning
Pyrotechnic Emergency Tensioning Devices
that have been deployed must be renewed.
For your safety, when disposing of Emergency
Tensioning Devices, always observe the
safety instructions. These are available from
any authorized Mercedes-Benz Center.
The PRE-SAFE ®
system has electrically
operated reversible pre-tensioners that do
not require replacement after activation.
Automatic comfort-fit feature
The front seat belts have an automatic
comfort-install feature. In vehicles with a rear
bench seat with electrically adjustable outer
seats, the seat belts for the outer seats have
an automatic comfort-install feature. The
automatic comfort-install feature reduces the
retraction force of the seat belts. This results
in increased seat belt comfort.
Children in the vehicle
Important safety notes
GWarning
When leaving the vehicle, always remove the
SmartKey from the ignition lock. Always take
the SmartKey with you and lock the vehicle.
Do not leave children unattended in the
vehicle, even if they are secured in a child
restraint system, or with access to an
unlocked vehicle. A child's unsupervised
access to a vehicle could result in an accident
and/or serious personal injury. The children
could:
R injure themselves on parts of the vehicle
R be seriously or fatally injured through
excessive exposure to extreme heat or cold
R injure themselves or cause an accident with
vehicle equipment that can be operated
even if the SmartKey is removed from the
ignition lock or removed from the vehicle,
such as seat adjustment, steering wheel
adjustment, or the memory function
If children open a door, they could injure other
persons or get out of the vehicle and injure
themselves or be injured by following traffic.
Do not expose the child restraint system to
direct sunlight. The child restraint system's
metal parts, for example, could become very
hot, and the child could be burned on these
parts.
GWarning!
Do not carry heavy or hard objects in the
passenger compartment or trunk unless they
are firmly secured in place.
Unsecured or improperly positioned cargo
increases a child's risk of injury in the event
of
R strong braking maneuvers
R sudden changes of direction
R an accident
60Children in the vehicleSafety

All of the above will lessen the
effectiveness of the child restraint and thus
increase the chance or severity of injury in
an accident.
Child-proof locks
Child-proof locks for the rear doors
GWarning
Observe "Important safety notes"
(Y page 60).
GWarning
Children could open a rear door from inside
the vehicle. This could result in serious
injuries or an accident. Therefore, when
children ride in the rear always secure the rear
doors with the child-proof locks.
You can secure each door individually with
the child-proof locks on the rear doors. A door
secured with a child-proof lock cannot be
opened from inside the vehicle. When the
vehicle is unlocked, the door can be opened
from the outside.
XTo activate: press the child-proof lock
lever up in the direction of arrow :.
XMake sure that the child-proof locks are
working properly.
XTo deactivate: press the child-proof lock
lever down in the direction of arrow ;.
Override feature for the rear side
windows
GWarning
Observe "Important safety notes"
(Y page 60).
GWarning
When children ride on the vehicle's rear seats,
activate the override switch. Otherwise, the
children could be injured, e.g. by trapping
themselves in the rear side window.
For the rear compartment, you can disable
operation of:
Rthe rear side windows
Rthe cigarette lighter in the rear
Radjustment of the front-passenger seat
from the rear compartment
Rthe sunblinds:
-in the roof
-of the rear window
-of the rear side windows
XTo activate/deactivate: press button :.
If indicator lamp ; is lit, the rear-
compartment functions are disabled. The
rear side windows can then only be
operated using the switches on the driver's
door. If indicator lamp ; is off, the
functions are enabled. The rear side
windows can be operated using the
switches in the rear compartment.
Children in the vehicle65SafetyZ

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.
SmartKey
Important safety notes
GWarning!
When leaving the vehicle, always remove the
SmartKey from the starter switch. Always
take the SmartKey with you and lock the
vehicle. Do not leave children unattended in
the vehicle, even if they are secured in a child
restraint system, or with access to an
unlocked vehicle. A child's unsupervised
access to a vehicle could result in an accident
and/or serious personal injury. The children
could
R injure themselves on parts of the vehicle
R be seriously or fatally injured through
excessive exposure to extreme heat or cold
R injure themselves or cause an accident with
vehicle equipment that can be operated
even if the SmartKey is removed from the
starter switch or removed from the vehicle,
such as seat adjustment, steering wheel
adjustment, or the memory function
If children open a door, they could injure other
persons or get out of the vehicle and injure
themselves or be injured by following traffic.
Do not expose the child restraint system to
direct sunlight. The child restraint system's
metal parts, for example, could become very
hot, and the child could be burned by these
parts.
GWarning
Do not carry heavy or hard objects in the
passenger compartment unless they are
firmly secured in place.
Unsecured or improperly positioned cargo
increases a child's risk of injury in the event
of:
R strong braking maneuvers
R sudden changes of direction
R an accident
General information
If you cannot open or lock the vehicle with the
SmartKey, either the battery in the SmartKey
is empty, the SmartKey is faulty, or the starter
battery is discharged.
XCheck the battery in the SmartKey and
replace it if necessary ( Y page 80).XUnlock the driver's door with the
mechanical key ( Y page 84).XLock the vehicle ( Y page 84).XHave the starter battery and battery
contacts checked by an authorized
Mercedes-Benz Center.
If the SmartKey is faulty, contact Roadside
Assistance or an authorized Mercedes-Benz
Center.
SmartKey functions
General notes
i USA only:
This device complies with Part 15 of the
FCC regulations. Operation is subject to
the following conditions:
1. This device must not cause any harmful
interference, and
2. This device must be able to
accommodate interference that is
received, including interference which
could cause unwanted functions.
76SmartKeyOpening and closing