
Belt
see Sea tbelt
Belt force limiter s(activation) ...........39
Belt tensioner Activatio n......................................... 39
Function .......................................... .50
Blind Spo tAssist
Activating/deactivating .................224
Display message ............................ 246
Notes/function .............................. 196
Trailer towing ................................. 198
see Active Blind Spot Assist
Bonnet
Active bonnet (pedestrian protec-
tion) ............................................... 280
Closing .......................................... .282
Display message ............................ 250
Opening ......................................... 281
Boot
Emergency release ..........................81
Important safety guidelines .............79
Locking separatel y........................... 81
Opening (automatically from
inside) .............................................. 81
Opening (automatically from out-
side) ................................................ .80
Boo tlid
Display message ............................ 250
Opening/closing .............................. 79
Opening dimensions ......................343
Boot load (maximum)
see Technical data
Boot separator
Display message ............................ 251
General notes .................................. 92
Opening/closing .............................. 92
Brake Assist System
see BAS (Brake Assist System)
Brake fluid
Display message ............................ 235
Notes ............................................. 336
Brake lamps
Adaptive .......................................... .63
Display message ............................ 239
Brakes
ABS .................................................. 62
BAS .................................................. 62
BAS PLUS ........................................ 62Brake fluid (notes)
.........................336
Display message ............................ 233
Driving tips .................................... 167
Important safety notes ..................167
Parking brake ................................ 166
Warning lamp ................................. 257
Breakdown
see Flat tyre
see Towing away/tow-starting
Bulbs
see Changing bulbs C
Calling up afault
see Display messages
Capacities
see Technical data
Car
see Vehicle
Care
AIRCAP .......................................... 288
Automatic car wash .......................286
Cabriolet soft top ........................... 288
Display ........................................... 291
Draught stop .................................. 289
Exterior lighting ............................. 290
High-pressure cleaner .................... 287
Matt paintwork .............................. 287
Notes ............................................. 285
Paint .............................................. 287
Plastic trim .................................... 291
Reversing camera ..........................290
Seat bel t........................................ 292
Seat cover ..................................... 292
Sensors ......................................... 290
Tai lpipes ....................................... 291
Trim pieces .................................... 292
Wheels ........................................... 287
Wind deflector ............................... 288
Windows ........................................ 289
Wiper blades .................................. 290
Wooden trim .................................. 292
Car key
see Key
Car wash (care) ................................. 286
CD player/CD changer(on-board
computer) .......................................... 2206
Index

Residual heat (climate control)
........136
Restrain tsystem
see SRS (Supplemental Restraint
System)
Rev counter ........................................ 212
Reverse gear Engaging (automatic transmis-
sion) ............................................... 154
Engaging (manual transmission) ....154
Reversing camera
Cleaning instructions .....................290
Function/notes ............................. 192
Reversing lamp (display message) ..240
Roll bar Display message ............................ 236
Operation ........................................ .44
Rolle rblind
see Roller sunblind
Roller sunblind
Panorama sliding sunroof ................97
Rea rwindow .................................. 271
Roof
see Soft top
Roof load (maximum)
see Technical data
Route
see Route guidance (navigation)
Route guidance (navigation) ............218 S
Safety Childre ninthe vehicle ..................... 51
Child restraint systems ....................51
Safety systems
see Driving safety systems
Seat
Seat backres tdisplay message .....251
Seat belt
Adjusting the driver's and front-
passenger sea tbelt ......................... 49
Belt force limiter .............................. 50
Belt tensioner .................................. 50
Cleaning ......................................... 292
Display message ............................ 236
Fastening ......................................... 47
Important safety guidelines .............46
Rea rseat belt status indicator .........49 Releasing
......................................... 49
Switching bel tadjustment on/off
(on-board computer) ......................230
Warning lamp (function) ................... 49
Seat belts
Warning lamp ................................. 255
Seats
Adjusting (electrically). ..................102
Adjusting (manually and electri-
cally) .............................................. 102
Adjusting the 4-way lumba rsup-
por t................................................ 105
Adjusting the head restraint ..........103
Cleaning the cover .........................292
Correct driver's sea tposition ........100
Folding the backrests forward/
back ............................................... 104
Important safety notes ..................101
Multicontour sea t.......................... 105
Seat heating problem ....................106
Seat ventilation problem ................107
Storing settings (memory func-
tion) ............................................... 112
Switching AIRSCAR Fon/off .......... 107
Switching sea theating on/off .......106
Switching the sea tventilation on/
off .................................................. 106
Sensors (cleaning instructions) .......290
Service see ASSYST PLUS service interval
display
Service menu (on-board computer) .224
Service products Brake fluid ..................................... 336
Coolant (engine) ............................ 337
Engine oil ....................................... 335
Fuel ................................................ 334
Important safety notes ..................333
Settings
Factory (on-board computer) .........231
On-board computer .......................224
Settin gthe air distribution ...............133
Settin gthe airflow ............................ 134
Sidebag ................................................ 43
Side windows Convenience closing ........................84
Convenience opening ......................83
Important safety notes ....................8216
Index

Warning and indicator lamps
Function Page
:
ESP
®
OFF 258
;
Diesel engine: preglow 148
=
Front foglamps 115
?
Rea
rfoglamp 116
A
Turn signal 116
B
ESP
® 258
C
Distance warning signal 262
D
Main-beam headlamps
117 Function Page
E
Dipped-beam headlamps 115
F
Seat belt 255
G
SRS 259
H
Engine diagnostics 260
I
Brakes 257
J
Coolant 260
K
ABS 257
L
Reserve fuel 26030
Instrument clusterAt
ag lance

Centre console
Coupé
Function Page
:
Hazard warning lamps 117
;
AT
Ai ndicator lamp 68
=
PASSENGER AIRBA
GOFF
indicator lamp 53
?
Moves th
eseat-belt
extender forwards 47
A
Audi
osystem/COMAND
APS; see separate operat-
ing instructions B
Seat heating 106
C
Seat ventilation 106
D
ECO start/sto
pbutton 1 150
E
PARKTRONIC 185
F
Rear window roller sunblind
271 Function Page
G
Dynamic driving package
wit
hsports mode 183
H
Auxiliary heating 137
I
Ashtray 271
Cigarett
elighter 272
Power socket 272
J
Gear lever 153
Selector lever 154
K
Stowage compartment 264
Cup holder 269
L
Stowage compartment 264
M
Audio/COMAND controller
N
Select
sthe driv eprogram 156
1
Only vehicle swithE CO start/sto pfunction. 32
Centre consoleAt
ag lance

Cabriolet
Function Page
:
Hazard warning lamps 117
;
AT
Ai ndicator lamp 68
=
PASSENGER AIRBA
GOFF
indicator lamp 53
?
Moves th
eseat-belt
extender forwards 47
A
Audi
osystem/COMAND
APS; see separate operat-
ing instructions B
Seat heating 106
C
Seat ventilation 106
D
AIRSCARF 107
E
ECO start/sto
pbutton 1 150
F
PARKTRONIC 185
G
Retracts th
erear seat head
restraints 103 Function Page
H
Dynamic driving package
wit
hsports mode 183
I
Ashtray 271
Cigarett
elighter 272
Power socket 272
J
Gear lever 153
Selector lever 154
K
Stowage compartment 264
Cup holder 269
L
Stowage compartment 264
M
AIRCAP 94
N
Open
sand closes th eside
windows 82
O
Open
sand closes th esoft
top 86
P
Audio/COMAND controller
Q
Select
sthe driv eprogram 156
1
Only vehicle swithE CO start/sto pfunction. Centre console
33Atag lance

Useful information
i This Owner's Manual describes all models
and all standard and optional equipment
available to your vehicle at the time of pub-
lication of the Owner's Manual. Country-
specific deviation sare possible. Please
not ethat your vehicle may not be equipped
with all feature sdescribed. This also
applies to safety-relevan tsystems and
functions.
i Pleas ereadt he information on qualified
specialist workshop s(Ypage 22). Occupant safety
Important safet
ynotes
Seat belts, together wit hthe Supplemental
Restrain tSyste m–S RS (Y page 39), are
complementary, co-ordinated restrain tsys-
tems .They reduce the risk of injury in spe-
cific, pre-defined types of accident situations
and thereby increase occupant safety. How-
ever, seat belts and airbags generally do not
protect against objectsp enetratingthe vehi-
cle from the outside.
To ensure that the restraint systems can
deliver their full potential protection, make
sure that:
R the seat and head restraint are adjusted
properly (Y page 100).
R the seat belt has been fastened properly
(Y page 47).
R the airbags can inflate unrestricted if
deployed (Y page 40).
R the steering wheel is adjusted properly
(Y page 100).
R the restraint systems have not been modi-
fied.
i An airbag increases the protection of
vehicle occupants wearing aseat belt. As
such, they are only an additional restraint
system which complements, but does not
replace, the seat belt. All vehicle occupants must wear their seat belt correctly at all
times, even if the vehicle is equipped with
airbags. The airbags are not deployed in all
types of accidents. For example, if the pro-
tective capacity of correctly fastened seat
belts is not increased by deploying the air-
bags, the airbags will not deploy.A
irbag
deploymen tonly provides increased pro-
tection if the sea tbeltisw ornc orrectly
because:
R the sea tbelt helps to keep the vehicle
occupan tinthe best position in relation
to the airbag.
R in ah ead-on collision, for example, the
seat belt prevents the vehicle occupant
from being propelled towards the point
of impact. It can thus reduce the risk of
injury.
In accidents in which an airbag is deployed,
it provides increased protection only if the
seat belt is worn correctly. G
WARNING
If service work is not carried out correctly, the
operating safety of your vehicle may be affec-
ted. This could cause you to lose control of
your vehicle and cause an accident. More-
over, the safety systems may no longer be
able to protect you or others as they are
designed to do.
Always have service work carried out at a
qualified specialist workshop. The workshop
must have the necessary specialist knowl-
edge and tools to carry out the work required.
Mercedes-Ben zrecommends that you use a
Mercedes-Benz Service Centr efor this pur-
pose. In particular, work relevant to safety or
on safety-related systems must be carried out
at aq ualified specialist workshop. 38
Occupant safetySafety

G
WARNING
Modifications to or work performe dincor-
rectly on the following parts can result in the
restraint systems not functioning as intended:
R the restraint system, consisting of seat
belts and their anchorage points, beltt en-
sioners, belt forc elimiters and airbags
R the wiring
R networked electronic systems
Airbags and belt tensioners could fail to
deploy or be triggered in an acciden tdespite
the deceleration forc ebeing sufficien ttotrig-
ger the systems, or could be triggered unin-
tentionally. For this reason, never make any
modifications to the restraint systems.
Therefore, you must not tamper with elec-
tronic components or their software. SRS (Supplemental Restraint System)
Introduction SRS consist
sof:
R the 6 SRS warning lamp
R airbags
R airbag control unit (with crash sensors)
R belt tensioners
R belt force limiters
SRS reduces the risk of occupant scoming
into contact with the vehicle's interior in the
event of an accident .Itcan also reduce the
effect of the forces to which occupant sare
subjected during an accident.
SRS warning lamp 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 6 SRS warning lamp in the instrument
cluster lights up when the ignition is switched
on. It goes out no later than afew seconds
after the engine is started. G
WARNING
If SRS is malfunctioning, individual systems
may be activated unintentionally or may not
be triggered in the event of an accident with
ah igh rate of vehicle deceleration.
Am alfunction has occurred if:
R the 6 SRS warning lamp does not light
up when the ignition is switched on.
R the engine is runnin gand the 6SRS
warning lamp does not go out after afew
seconds.
R the engine is runnin gand the 6SRS
warning lamp lights up again.
In this case, have SRS checked immediately
at aq ualified specialist workshop. Mercedes-
Benz recommends that you use aMercedes-
Benz Service Centre for this purpose.
In particular, work relevant to safety or on
safety-related systems must be carried out at
aq ualified specialist workshop.
Triggering of belt tensioners, belt force
limiters and airbags During the first stage of
acollision, the airbag
control unit evaluates important physical
data relating to vehicle deceleration or accel-
eration, such as:
R duration
R direction
R magnitude
Based on the evaluation of this data, the air-
bag control unit pre-emptively triggers the
belt tensioners in the first stage.
i The belt tensioners can only be triggered
if the seat belt tongues are correctly
engaged in the seat belt buckles.
If there is an even higher rate of vehicle decel-
eration or acceleration in alongitudinal direc-
tion, the front airbags are also deployed.
Your vehicle has adaptive, two-stage front air-
bags. The airbag control unit evaluates vehi-
cle deceleration or acceleration in the event
of ac ollision. In the first deployment stage, Occupant safety
39Safety Z

the front airba
gisfilledwith enoug hpropel-
lant ga storeducethe risk of injuries .The
front airbag is fully deployed if asecond
deployment threshold is exceeded within a
few milliseconds.
The belt tensioner and airbag triggering
thresholds are variable and are adapted to the
rate of deceleration or acceleration of the
vehicle. This process is pre-emptive in nature.
The triggering process must take place in
good time at the start of the collision.
i Airbags are not deployed in all types of
accidents. Also, not all airbags are
deployed together in an accident. The dif-
ferent airbag systems work independently
of each other.
How the airbag system works is deter-
mined by the severity of the collision detec-
ted, especiallyt he vehicle deceleration or
acceleration, and the apparent type of acci-
dent:
R head-on collision
R side impact
R rear impact
R Cabriolet: overturn
The rate of vehicle deceleration or accelera-
tion and the direction of the force are essen-
tially determined by:
R the distribution of forces during the colli-
sion
R the collision angle
R the deformation characteristics of the vehi-
cle
R the characteristics of the object with which
the vehicle has collided
Factors which can only be seen and measured
after acollision has occurred do not play a
decisive role in the deployment of an airbag,
nor do they provide an indication of airbag
deployment.
The vehicle may be deformed significantly,
e.g. the bonnet or the wing, without an airbag
being deployed. This is the case if only parts
which are relatively easily deformed are affec- ted and the rate of deceleration is not high.
Conversely, airbags may be deployed even
though the vehicle suffers only minor defor-
mation. This is the case if, for example, very
rigid vehicle parts such as longitudinal body
members are hit, and sufficient deceleration
occurs as
aresult. Airbags
Important safety notes Airbag deployment slows down and restricts
the movement of the vehicle occupant.
If the airbags are deployed, you will hear a
bang and asmall 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 6SRS warning lamp
lights up.
The airbag installation locations are identified
by the AIRBAG symbol. G
WARNING
Airbags provide additional protection; they
are not, however, asubstitute for seat belts.
Observe the following notes to reduce the risk
of serious or even fatal injury caused by airbag
deployment:
R All vehicle occupants –inparticular ,preg-
nan twome n–m ust wear their seat belt
correctly at all times and lean back against
th eb ackrest, whic hshoul dbep ositioned
as close to th evertical as possible. The
head restraint must support th eback of the
head at about eye level.
R Always secure childre nless than 1.50mt all
and unde r12years of age in suitable child
restraint systems.
R All vehicle occupant smust select aseat
position that is as far away from the airbag
as possible. The driver's seat position must
allow the vehicle to be driven safely. The
driver's chest should be as far away from 40
Occupant safetySafety