
Index 
....................................................... 4Introduction .........................................
17 At a glance 
........................................... 23 Safety ...................................................
31 Opening/closing 
................................. 59 Seats, steering wheel and mirrors ....
73 Lights and windshield wipers 
............87 Climate control 
................................. 103 Driving and parking ..........................
113 On-board computer and displays 
....151 Stowing and features .......................
187 Maintenance and care 
......................209 Breakdown assistance 
.....................223 Wheels and tires ...............................
241 Technical data ...................................
269 Contents
3 

S
Safety Children in the vehicle  .....................47
Child restraint systems  ....................47
Overview of occupant safety
systems  ...........................................
32
Safety systems
see Driving safety systems   
                    
Seat backrest
Folding back .................................. 191
Folding forwards  ............................ 191
Seat belts
Adjusting the height ......................... 45
Belt force limiters ............................ 47
Cleaning ......................................... 222
Correct usage  .................................. 42
Emergency Tensioning Devices ........ 47
Fastening  ................................... 43, 44
Fastening, front  ............................... 44
Fastening in the rear, center  ............44
Important safety guidelines  .............41
Releasing ......................................... 46
Safety guidelines  ............................. 33
Special seat belt retractor ............... 49
Warning lamp ................................. 178
Warning lamp (function) ................... 46
Seat heating
Indicator lamp (malfunction) ............ 81
Seats
Adjusting the 4-way lumbar
support ............................................ 79
Adjusting the head restraint ............ 77
Cleaning the cover ......................... 221
Correct driver's seat position ........... 74
Important safety notes .................... 75
Multicontour seat ............................ 79
Storing settings (memory
function)  .......................................... 85
Switching seat heating on/off ......... 80
Switching seat ventilation on/off  ....81
Seat ventilation
Indicator lamp (malfunction) ............ 81
Sensors (cleaning instructions)  .......220
Service indicator see Service interval display                       Service interval display
 ....................215
Displaying  a 
service message (on-
board computer)  ............................ 216
Service products
Brake fluid  ..................................... 275
Capacities ...................................... 273
Coolant (engine)  ............................ 276
Engine oil ....................................... 275
Fuel ................................................ 273
Important safety notes .................. 272
Notes ............................................. 272
Refrigerant (air-conditioning
system) .......................................... 275
Washer fluid  ................................... 277
Settings
Calling up a stored setting ............... 86
Factory (on-board computer) ......... 158
On-board computer ....................... 158
Setting the unit (on-board
computer)
Speedometer ................................. 159
Shift ranges ....................................... 121
Side marker lamp (display
message)  ............................................ 169
Side windows Convenience closing feature ............ 69
Convenience opening feature .......... 69
Important safety information ........... 68
Opening/closing .............................. 68
Troubleshooting  ............................... 69
Ski rack .............................................. 193
Sliding sunroof Important safety notes .................... 70
Opening/closing .............................. 70
Operating manually  ..........................71
SmartKey
Changing the battery ....................... 62
Changing the programming ............. 61
Checking the battery ....................... 62
Convenience closing feature ............ 69
Convenience opening feature .......... 69
Important safety notes .................... 60
Loss ................................................. 64
Malfunction ...................................... 64
Starting the engine ........................ 116
Snow chains  ...................................... 24512
Index 

passenger air bag if the system recognizes
that the front-passenger seat is empty .
If the front-passenger seat is occupied by an
adult or young person and the 
4/
indicator  lamp 
is lit up, the front-passenger air
bag is disabled. If the front-passenger seat is
recognized as empty, the air bag control unit
will not deploy the front-passenger air bag in
the event of a collision.
Ask your passenger to sit correctly on the
front-passenger seat in an upright position
until the 4/ indicator lamp goes out.
If the  4/ indicator lamp does not go
out, please consult an authorized Mercedes-
Benz Center.
Window curtain air bags G
WARNING
Observe "Important safety notes"
(
 Y page 34).
The  window 
curtain air bags enhance the level
of protection for the head (but not chest or
arms) of the vehicle occupants on the side of
the vehicle on which the impact occurs.
The window curtain air bags are integrated
into the side of the roof frame and deploy in
the area extending from the front door (A-
pillar) to the rear door (C-pillar). Window curtain air bags 
:
  are deployed:
R on the side on which an impact occurs
R at the start of an accident with a high rate
of lateral vehicle deceleration or
acceleration, e.g. in a side impact R
regardless of whether the front-passenger
seat is occupied
R independently of seat belt use
R if the vehicle overturns and the system
determines that window curtain air bag
deployment  can 
offer additional protection
to that provided by the seat belt
R independently of the front air bags
Window curtain air bags  : will not deploy in
impacts with deceleration rates which do not
exceed the system's preset deployment
thresholds for vehicle deceleration or
acceleration. You will then be protected by
the fastened seat belt. BabySmart™ air bag deactivation
system
How the air bag deactivation system
works Your vehicle is equipped with a BabySmart™
system.
G
WARNING
According to accident statistics, children are
safer when properly restrained in the rear
seating positions than in the front seating
position. Thus, we strongly recommend that
children  be 
placed in the rear seats whenever
possible. Regardless of seating position,
children 12 years old and under must be
seated and properly secured in an appropriate
infant restraint, toddler restraint, or booster
seat recommended for the size and weight of
the child.
The infant or child restraint must be properly
secured with the vehicle's seat belt, the seat
belt and top tether strap, or lower anchors and
top tether strap, fully in accordance with the
child seat manufacturer's instructions.
Occupants, especially children, should always
sit as upright as possible, wear the seat belt
properly and use an appropriately sized infant
restraint, toddler restraint, or booster seat Occupant safety
37
Safety
Z   

Problems with the air bag deactivation system
Problem Possible causes/consequences and 
M SolutionsThe 45
indicator lamp is on
continuously. A special BabySmart™-compatible child restraint system is
mounted on the front-passenger seat.
The front-passenger air bag is therefore disabled.
There is no BabySmart™-compatible child restraint system
mounted 
on 
the front-passenger seat. The BabySmart™ system is
malfunctioning.
X Have the BabySmart™ system checked as soon as possible at
an authorized Mercedes-Benz Center. G
WARNING
If the  45 
indicator 
 lamp illuminates and remains illuminated when the weight of a typical
adult or someone larger than a small individual has been detected on the passenger seat, do not
allow any occupant to use the passenger seat until the system has been repaired. Problem Possible causes/consequences and 
M SolutionsThe 45
indicator 
lamp 
does not
light up and/or stay on
when a BabySmart™-
compatible child
restraint system is
installed on the front-
passenger seat. The BabySmart™ system is malfunctioning.
X
Make sure there is nothing between the seat cushion and the
child restraint system.
X Check that the child restraint system is installed correctly.
X If the  45 indicator lamp does not light up, have the
BabySmart™ system checked as soon as possible at an
authorized Mercedes-Benz Center.
Do not transport a child on the front-passenger seat until the
air bag deactivation system has been repaired. NECK-PRO head restraints
Important safety notes The NECK-PRO head restraints increase
protection to the driver's and the front
passenger's head and neck. The NECK-PRO
head restraints on the driver's and front-
passenger seats are moved forwards and
upwards 
in 
the event of a rear-end collision of
a certain severity. This provides better head
support. G
WARNING
Do not secure any objects (e.g. coat hangers)
on  the 
NECK-PRO head restraints. Otherwise,
the NECK-PRO head restraints may not
function properly, or in the event of a rear-end
collision may not be able offer the level of
protection they are designed to provide. G
WARNING
Head restraint covers prevent the NECK-PRO
head restraints from triggering correctly.
Consequently,  the 
NECK-PRO head restraints
cannot provide the intended level of
protection. Do not use head restraint covers. 40
Occupant safety
Safety 

Adjust the seat belt so that the upper part
of the belt is as close as possible to the
center of the shoulder. It should not touch
the neck. Never route the belt under the
shoulder. The height of the belt outlet can
be altered to ensure correct usage.
R The lap belt should be routed as low as
possible across the hips, not across the
abdomen.  If 
the lap belt is routed across the
abdomen, it could cause serious injuries in
the event of an impact.
R Never route the seat belt over rigid or
fragile objects in or on your clothing, such
as eyeglasses, pens, keys etc, as this could
cause injuries.
R Always ensure that the seat belt is routed
correctly. This is particularly important if
you are wearing loose clothing.
R Only one person should use each seat belt
at any one time. Never use a seat belt to
restrain more than one person or route the
belt around additional objects.
R Never wear seat belts when they are
twisted. Otherwise, in the event of an
impact, the full width of the seat belt is
unavailable to distribute the force of the
impact. The twisted seat belt routed across
your body could cause injuries.
R Pregnant women should also wear a three-
point seat belt. The lap belt must always
pass across your lap as low down as
possible, i.e. across your hips; not across
your abdomen.
R The seat backrest should be set as close to
vertical as possible.
R Check the seat belt during the journey in
order to make sure that it is correctly
positioned.
R Never rest your feet on the dashboard or
the seat. Always keep both feet on the floor
in front of the seat.
R When using a seat belt to secure an infant
restraint system, child restraint system or
a child on a booster seat, always follow the
child seat manufacturer's instructions. G
WARNING
Do 
 not pass seat belts over sharp edges. They
could tear.
Do  not 
allow the seat belt to get caught in the
door or in the seat adjustment mechanism.
This could damage the seat belt.
Never attempt to make modifications to seat
belts. This could impair the effectiveness of
the seat belts.
Fastening seat belts Important safety notes
G
WARNING
According to accident statistics, children are
safer when properly restrained on the rear
seats  than 
on the front-passenger seat. Thus,
we strongly recommend that children be
placed in the rear seat whenever possible.
Regardless of seating position, children 12
years old and under must be seated and
properly secured in an appropriately sized
child restraint system or booster seat
recommended for the size and weight of the
child. For additional information, see the
"Children in the vehicle" section.
A child's risk of serious or fatal injuries is
significantly increased if the child restraints
are not properly secured in the vehicle and/
or the child is not properly secured in the child
restraint. G
WARNING
Children 12 years old and under must never
ride in the front seat, except in a Mercedes-
Benz authorized BabySmart™ compatible
child seat, which operates with the
BabySmart™ system installed in the vehicle
to  deactivate 
the front passenger front air bag
when it is installed properly. Otherwise they
will be struck by the air bag when it inflates in
a crash. If this happens, serious or fatal injury
will result. Occupant safety
43
Safety Z 

X
Pull the seat belt smoothly from the inertia
reel.
X Engage fixed seat belt tongue ? in
buckle ;. X
Pull movable seat belt tongue  C and  route
the seat belt across your body. Without
twisting it, guide the shoulder section of the
seat belt across the middle of your shoulder
and the lap section across your hips.
X Engage movable seat belt tongue  C in
buckle A.
X If necessary, pull upwards on the shoulder
section of the seat belt to tighten the belt
across your body. For more information about releasing the seat
belt with release buttons 
B and =, see
"Releasing seat belts"  (
Y
 page 46).
Special seat belt retractor
All seat belts in the vehicle with the exception
of the driver's are equipped with a special
seat belt retractor, to which a child restraint
system can be secured. For further
information on special seat belt retractors,
see ( Y page 49).
Belt height adjustment You can adjust the belt height on the driver's
and front-passenger seat, as well as on the
outer rear seats.
Adjust the height so that the upper part of the
seat belt is routed across the center of your
shoulder.
X
To raise:  slide the belt sash guide upwards.
The belt sash guide engages in various
positions.
X To lower:
 pull belt sash guide release  :
forwards and hold it.
X Slide the belt sash guide downwards.
X Release belt sash guide release  : and
make sure that the belt sash guide has
engaged. Occupant safety
45
Safety Z       

standards. This information is also provided
in the installation instructions supplied with
the child restraint system.
Always read and follow the manufacturer's
instructions when using an infant or child
restraint system or booster seat.
Observe all warning signs in the vehicle
interior and on the infant or child restraint.
G
WARNING
According to accident statistics, children are
safer when properly restrained in the rear
seating positions than in the front seating
position. Thus, we strongly recommend that
children  be 
placed in the rear seats whenever
possible. Regardless of seating position,
children 12 years old and under must be
seated and properly secured in an appropriate
infant restraint, toddler restraint, or booster
seat recommended for the size and weight of
the child.
The infant or child restraint must be properly
secured with the vehicle's seat belt, the seat
belt and top tether strap, or lower anchors and
top tether strap, fully in accordance with the
child seat manufacturer's instructions.
Occupants, especially children, should always
sit as upright as possible, wear the seat belt
properly and use an appropriately sized infant
restraint, toddler restraint, or booster seat
recommended for the size and weight of the
child.
Children can be killed or seriously injured by
an inflating air bag. Note the following
important information when circumstances
require you to place a child in the front
passenger seat:
R Children 12 years old and under must never
ride in the front seat, except in a Mercedes-
Benz authorized BabySmart™ compatible
child seat, which operates with the
BabySmart™ system installed in the vehicle
to deactivate the front passenger front air
bag when it is installed properly. Otherwise
they will be struck by the air bag when it inflates in a crash. If this happens, serious
or fatal injury will result.
R 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 in a collision which
could occur under some circumstances,
even with the air bag technology installed
in your vehicle. The only means to
completely eliminate this risk is to never
place a child in a rear-facing child restraint
in the front seat. We therefore strongly
recommend that you always place a child
in a rear-facing child restraint in a backseat.
R If you must install a rear-facing child
restraint on the front passenger seat
because circumstances require you to do
so, make sure the  4 / indicator
lamp is illuminated, indicating that the front
passenger front air bag is deactivated.
Should the 4 / indicator lamp not
illuminate or go out while the restraint is
installed, please check installation.
Periodically check the  4 / indicator
lamp while driving to make sure the
4 / indicator lamp is illuminated. If
the 4 / 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.
R If you have to 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, and secure child restraint with
the vehicle's seat belt according to the
child seat manufacturer's instructions. G
WARNING
Infants and small children should never share
a seat belt with another occupant. During an 48
Children in the vehicle
Safety 

accident,  they could be crushed between the
occupant and seat belt.
A child's risk of serious or fatal injuries is
significantly increased if the child restraints
are not properly secured in the vehicle and/
or  the 
child is not properly secured in the child
restraint.
Children too big for a toddler restraint must
ride in seats using regular seat belts. Position
the shoulder belt across the chest and
shoulder, not face or neck. A booster seat
may be necessary to achieve proper seat belt
positioning for children over 41 lb (18 kg) until
they reach a height where a lap/shoulder belt
fits properly without a booster.
When the child restraint is not in use, remove
it from the vehicle or secure it with the seat
belt to prevent the child restraint from
becoming a projectile in the event of an
accident.
If an infant or child is traveling in the vehicle:
X Secure the infant or child with an
appropriate infant or child restraint
recommended for the child's age and
weight.
X Make sure that the infant or child is
properly secured at all times while the
vehicle is in motion. G
WARNING
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. G
WARNING
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
Special seat belt retractor G
WARNING
Observe "Important safety notes"
(
 Y page 47).
All  seat 
belts except the driver's seat belt are
equipped with a special seat belt retractor.
When activated, the special seat belt
retractor ensures that the seat belt will not
slacken once the child restraint system has
been secured.
Installing a child restraint system:
X Always comply with the manufacturer's
installation instructions.
X Pull the seat belt smoothly from the seat
belt retractor.
X Engage the seat belt tongue in the belt
buckle. Children in the vehicle
49
Safety Z