Fue
lgauge ....................................... 31
Grade (gasoline) ............................ 351
Important safety notes ..................351
Premium-grade unleaded gasoline .351
Problem (malfunction) ...................163
Quality (diesel). .............................. 352
Refueling ........................................ 160
Tank content/reserve fuel .............351
Fuel filler flap
Emergency release ........................162
Opening/closing ............................ 161
Fuel filte r(display message) ............227
Fuel level Calling up the range (on-board
computer) ...................................... 212
Fuel tank
Capacity ........................................ 351
Problem (malfunction) ...................163
Fuse allocation chart (vehicle tool
kit) ...................................................... 299
Fuses Allocation chart ............................. 309
Before changing ............................. 309
Dashboard fuse box .......................309
Engine emergency stop .................310
Fuse box in the cargo
compartment ................................. 310
Fuse box in the engine
compartment ................................. 309
Important safety notes ..................308 G
Garage door opener Clearing the memory .....................280
Important safety notes ..................277
Opening/closing the garage door ..280
Programming (button in the rear-
view mirror) ................................... 278
Genuine Mercedes-Benz parts .........348
Glove box ........................................... 251
GTW (Gross Trailer Weight)
(definition) ......................................... 332 H
Handbrake see Parking brake
Hazard warning lamps ......................124
Headlamp delayed switch-off see Exterior lighting delayed switch-off
Headlamps
Adding fluid to cleaning system .....288
Cleaning system (capacity )............ 356
Cleaning system (function) ............123
Cleaning system (notes) ................356
Fogging up ..................................... 124
see Automatic headlamp mode
Head restraints
Adjusting ....................................... 103
Adjusting (electrically). ..................103
Adjusting (manually). .....................103
Adjusting (rear) .............................. 104
Installing/removing (rear) ..............104
Luxury ............................................ 103
see NECK-PRO head restraints/
NECK-PRO luxury head restraints
Heating
see Climate control
High-beam headlamps
Changing bulbs .............................. 128
Display message ............................ 222
Switching on/off ........................... 123
Hill start assist .................................. 152
Hood Closing .......................................... .285
Display message ............................ 235
Opening ......................................... 284
Hydroplaning ..................................... 171 I
Ignition lock see Key positions
Immobilizer .......................................... 72
Indicator and warning lamps DISTRONI C.................................... 246
Indicator lamps
see Warning and indicator lamps
Insectp rotection on the radiator ....285 10
Index
Warning lamp ................................. 238
Warning lamp (function) ...................58
Seats
Adjusting (electrically) ...................102
Adjusting the head restraint ..........103
Cleaning the cover .........................295
Correct driver's sea tposition ........100
Entry position (3rd row of seats) ....108
Exit position (3rd row of seats) ......108
Folding downt he 2nd row of
seats .............................................. 256
Folding downt he 3rd row of seats .257
Folding the 2nd row of seats
forward manually ........................... 107
Folding the rear bench seat
forwards/back ............................... 254
Important safety notes ..................101
Overview ........................................ 101
Resetting the 2nd row of seats ......258
Resetting the 3rd row of seats ....... 258
Seat heating problem ....................111
Seat ventilation problem ................111
Storing settings (memory
function) ........................................ 116
Switching sea theating on/off .......110
Switching seat ventilation on/off ..111
Securing hooks .................................. 260
Selector lever Cleaning ......................................... 295
Sensors (cleaning instructions) .......293
Service see ASSYST PLUS
Service products
Brake fluid ..................................... 355
Coolant (engine) ............................ 355
DEF special additive s..................... 353
Engine oil ....................................... 354
Fuel ................................................ 351
Important safety notes ..................350
Washer fluid .................................. .356
Service work
see ASSYST PLUS
Settings
Factory (on-board computer) .........206
On-board computer .......................206
Setting the air distribution ...............141
Setting the airflow ............................141Short journeys (diesel particle
filter)
................................................... 169
Side impact air bag .............................45
Side marker lamp (display
message) ............................................ 223
Side marker lamps (changing
bulbs) ................................................. 128
Side windows Cleaning ......................................... 292
Convenience closing feature ............91
Convenience opening feature ..........90
Hinged sid ewindows ....................... 90
Important safety information ...........89
Opening/closing .............................. 89
Overview .......................................... 89
Problem (malfunction) .....................93
Resetting ......................................... 92
Sliding sunroof
Important safety notes ....................93
Opening/closing .............................. 94
Problem (malfunction) .....................97
Resetting ......................................... 95
see Panorama roof with power
tilt/sliding panel
SmartKey
Changing the battery .......................80
Changing the programming .............78
Checking the battery .......................79
Convenience closing feature ............91
Convenience opening feature ..........90
Display message ............................ 236
Door central locking/unlocking .......77
Important safety notes ....................76
Loss ................................................. 81
Mechanical key ................................ 78
Overview .......................................... 76
Positions (ignition lock) .................149
Problem (malfunction) .....................81
Starting the engine ........................151
Snow chains
Information .................................... 315
Sockets
2nd row of seats ............................ 270
Center console .............................. 269
Front-passenger footwell ...............269
General notes ................................ 269
Luggage compartment ...................270 Index
15
Cockpit
Function Page
:
Steering wheel paddle
shifters
157
;
Cruise control lever 173
=
Instrument cluster 31
?
Horn
A
DIRECT SELECT lever 154
B
PARKTRONIC warning
display
186
C
Overhead control panel 36
D
Climate control systems 134
E
Ignition lock 149
Start/Stop button
149 Function Page
F
Adjusting the steering
wheel manually
112
G
Adjusting the steering
wheel electrically
112
Steering wheel heating 112
H
Parking brake 167
I
Diagnostics connection 24
J
Opening the hood 284
K
Releasing the parking brake 167
L
Ligh
tswitch 120
M
Combinatio
nswitch 12330
CockpitAt a glance
Useful information
i This Operator's Manual describes all
models and all standard and optional
equipment of your vehicle available at the
time of publication of the Operator's
Manual. Country-specific differences are
possible. Please note that your vehicle may
not be equipped with all features
described. This also applies to safety-
related systems and functions.
i Read the information on qualified
specialist workshops: (Y page 24).Panic alarm
X
To activate: press!button :for at
least one second.
An alarm sounds and the exterior lighting
flashes.
X To deactivate: press!button :
again.
or
X Insert the SmartKey into the ignition lock.
or
X Press the KEYLESS-GO Start/Stop button.
The KEYLESS-GO key must be in the
vehicle.
i USA only:
This device complies with Part 15 of the
FCC Rules. Operation is subjec tto the
following two conditions: 1. This device may not cause interference,
and
2. this device must accept any interference
received, including interference that may
cause undesired operation.
Any unauthorized modification to this
device could void the user's authority to
operate the equipment.
The Product label with FCC ID and IC
certification number can be found in the
battery case of the SmartKey.
i Canada only:
This device complies with RSS-Gen of
Industry Canada. Operation is subject to
the following two conditions:
1. This device may not cause interference,
and
2. this device must accept any interference
received, including interference that may
cause undesired operation.
Any unauthorized modification to this
device could void the user's authority to
operate the equipment.
The Product label with FCC ID and IC
certification number can be found in the
battery case of the SmartKey. Occupant safety
Important safety notes
G
WARNING
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 40
Occupant safetySafety
tamper with electronic components or their
software.
In this section, you will lear nthe most
important facts about the restraint system
components of the vehicle.
The restraint system consists of:
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/NECK-PRO
luxury head restraints
R PRE-SAFE ®
R air bag system components with:
-PASSENGER AIR BAG OFF indicator lamp
- front-passenger seat with Occupant
Classification System (OCS)
The different air bag systems work
independently of each other. The protective
functions of the system work in conjunction
with each other. Not all air bags are always
deployed in an accident.
i See "Children in the vehicle" for
information on infants and children
traveling with you in the vehicle restraint
systems for infants and children
(Y page 60). SRS (Supplemental Restraint System)
Introduction SRS consists of:
R
+ SRS warning lamp
R Air bags
R The air bag control unit with crash sensors
R Emergency Tensioning Devices
R Belt force limiters
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 warning lamp G
WARNING
The SRS self-check has detected a
malfunction if the +SRS warning lamp:
R does not come on at all
R fails to go out approximately 4seconds
after the engine was started
R comes on after the engine was started or
while driving
For your safety, Mercedes-Benz strongly
recommends that you have the system
checked as soon as possible at an authorized
Mercedes-Benz Center .Otherwise the SRS
may not be activated when it is needed in an
accident, which could resul tinserious or fatal
injury. The SRS might also deploy
unexpectedly and unnecessarily which could
also result in injury.
In addition, improper work on the SRS creates
a risk of rendering the SRS inoperative or
causing unintended air bag deployment. Work
on the SRS must therefore only be performed
by qualified technicians. Contac tan
authorized Mercedes-Ben zCenter.
If it is necessary to modify an air bag system
to accommodate a person with disabilities,
contact an authorized Mercedes-Benz Center
for details. USA only: Call our Customer
Assistance Center at 1-800-FOR-MERCedes
(1-800-367-6372) for details.
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 + 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 +SRS warning lamp
goes out while the engine is running. Occupant safety
41Safety Z
R
while seated, an occupant should not
position him/herself in such a way as to
cause the occupant's weight to be lifted
fro mt he seat cushion as this may result in
the OCS being unable to correctly
approximate the occupant's weight
category.
R read and observe all warnings in this
section. If the SmartKey has been removed from the
ignition lock or is in position
0,
42 indicator lamp:does not
light up.
The Occupant Classification System (OCS)
categorizes the occupant on the front-
passenger seat using a weight sensor. The
front-passenger front air bag is deactivated
automatically for certain weight categories.
42 indicator lamp:shows you
the current status. If
42 indicator lamp:lights up,
the front-passenger air bag is disabled.
The system does not deactivate:
R the side impact air bag
R the window curtain air bag
R the Emergency Tensioning Devices
To be classified correctly, the front passenger
must sit:
R with the seat belt fastened correctly
R in a position that is as upright as possible
with their back against the seat backrest
R with their feet on the floor The OCS weight sensor reading is affected if
the occupant's weight is transferred, e.g. by
leaning on the armrest.
In addition, the occupant weight may appear
to increase or decrease due to the following:
R
objects hanging on the seat
R objects lodged underneath the seat
R objects lodged between the seat and the
center console
R objects lodged between the seat and the
door
R other passengers exerting weight on the
seat
R objects applying pressure to the back of
the seat
Make sure that the seat always has clearance
in all directions.
If the front-passenger seat, the seat cover or
the seat cushion are damaged, have the
necessary repair work carried out at a
qualified specialist workshop.
For safety reasons, Mercedes-Benz
recommends that you only use seat
accessories that have been approved by
Mercedes-Benz.
Both the driver and the front passenger
should always observe the 42
indicator lamp to determine whether or not
the front passenger is positioned correctly.
Also observe the air bag display messages,
which appearint he instrumentcluster
(Y page 220).
If the driver's air bag deploys, this does not
mean that the front-passenger front air bag
will also deploy.
The OCS may have detected that the seat:
R is empty or occupied by the weight of a
typical child up to twelve months old,
seated in a child restraint system
R is occupied by a small individual, such as a
young teenager or a small adult
R is occupied by a child in a child restraint
system whose weight is greater than that
of a typical twelve month old child. Occupant safety
49Safety Z
These are examples of when the OCS
deactivates the front-passenger fronta
ir bag.
Deactivation takes place although the
collision fulfills the criteria for deploying the
driver's air bag.
System self-test G
WARNING
If the 42indicator lamp does
not illuminate, the system is not functioning.
You must contac tanauthorized Mercedes-
Benz Center before seating any child on the
fron tpassenger seat. G
WARNING
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.
The 42 indicator lamp lights up:
R if you turn the SmartKey in the ignition lock
to position 1or 2
R if you press the KEYLESS-GO Start/Stop
button once or twice on vehicles with
KEYLESS-GO
R if an adulti s seated properly on the front-
passenger seat and the OCS classifies the
occupant as an adult
The 42 indicator lamp goes
out after approximately six seconds.
If the seat is not occupied and the OCS
detects that the front-passenger seat is
empty, the 42 indicator lamp
will continue to light up. The 42
indicator lamp will not go
out.
For more information aboutt he OCS, see
"Problems with the Occupant Classification
System" (Y page 51). 50
Occupant safetySafety
X
Adjust the seat and move the backrest to
an almos tvertical position (Y page 100).
X Pull the seat belt smoothly through belt
sash guide :.
X Without twisting it, guide the shoulder
section of the seat belt across the middle
of your shoulder and the lap section across
your pelvis.
X Engage belt tongue ;in buckle =.
Seat-belt adjustment:ifn ecessary, the
driver's and front-passenger seat belts
automatically adjust to the upper body
(Y page 57).
X If necessary, adjust the seat belt to the
appropriate height (Y page 57).
X If necessary, pull upwards on the shoulder
section of the seat belt to tighten the belt
across your body.
All seat belts except the driver's seat belt are
equipped with a special seat belt retractor to
securely fasten child restraint systems in the
vehicle. Further information can be found
under "Special seat belt retractor"
(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:
R
you engage the belt tongue in the belt
buckle and you then turn the SmartKey to
position 2in the ignition lock.
R the SmartKey is in position 2in the ignition
lock and you then engage the belt tongue
in the buckle.
The seat-belt adjustment will apply a
retraction 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 210).
The seat-belt adjustment is an integral part of
the PRE-SAFE ®
convenience function. More
information about PRE-SAFE ®
can be found
under "PRE-SAFE ®
(preventative occupant
protection)" (Y page 52).
Belt height adjustment You can adjust the seat belt height on the
fron
tseats. Adjust the belt to a height that
allows the upper part of the seat belt to be
routed across the center of your shoulder. Occupant safety
57Safety Z