
28Opening and closing
KeysThe key set1Master keys with remote control. 
They govern the functions of the Key 
Memory. Certain functions in your 
vehicle may operate differently 
depending on the key, refer to 
page 58.
To distinguish between keys, you can 
mark each key with remote control by 
applying one of the colored decals 
that you received when accepting 
delivery of your vehicle
In every master key with the 
remote control feature there is an 
extended-life battery that is charged 
automatically in the ignition lock as you 
drive.
Therefore, use otherwise unused mas-
ter keys for a longer journey every six 
months so that the battery can be 
charged.<
2Spare key – for storage in a safe 
place, such as in your wallet. This key 
is not intended for constant use. The 
luggage compartment lid and the 
glove compartment cannot be locked 
and unlocked with this key. This is 
useful for valet parking, for example
Central locking systemThe conceptThe central locking system is ready for 
operation whenever the driver's door is 
closed. The system simultaneously 
engages and releases the locks on the
>doors
>luggage compartment lid
>fuel filler door.
The central locking system can be 
operated
>from outside via the remote control 
as well as via the driver's door lock
>from inside by pressing a button.
The fuel filler door is not locked when 
the central locking system is activated 
from the inside, refer to page 32. When 
the system is actuated from the out-
side, the anti-theft system is also acti-
vated. This prevents the doors from 
being unlocked via the lock buttons or 
the release handle. The alarm system is 
also activated or deactivated.
If locked from the inside, the central 
locking system unlocks automatically in 
the event of an accident, except on 
doors that have been locked individu-
ally using the lock buttons, refer to 
page 32. In addition, the hazard warn-
ing flashers and interior lamps come on. 

31
Opening and closing – via the door lockOne turn of the key in the driver's door 
lock unlocks the driver's door only. 
Turning the key a second time unlocks 
the passenger-side door, the luggage 
compartment lid and the fuel filler door.
You can have a signal set to con-
firm that the vehicle's locks have 
engaged securely.
lock.
>To open: with the door closed, hold 
the key in the Unlock position
>To close: with the door closed, hold 
the key in the Lock position.
Whenever closing the windows or 
sliding/tilt sunroof you should 
always monitor their path and progress 
to ensure that no one is injured. 
Release the key to stop the windows or 
sliding/tilt sunroof.<
Manual operationIf there is an electrical malfunction, you 
can unlock or lock the driver's door by 
turning the key in the lock all the way to 
the left or right.
OverviewControlsMaintenanceRepairsDataIndex 

32
Opening and closing – from the insideYou can use this button to control the 
central locking system whenever the 
doors are closed. The doors and lug-
gage compartment lid are unlocked or 
locked only. The anti-theft system is not 
activated.
If only the driver's door was 
unlocked from the outside and 
you press the button, then, with the 
driver's door still open, the passenger-
side door, the luggage compartment lid 
and the fuel filler door will unlock, too.
If the driver's door is closed, it will be 
locked.<
If you desire, the central locking 
system can be activated automati-
cally as soon as you begin to drive. This 
can be adjusted to be key-specific.<
To unlock and open the doors1. Press the button for the central lock-
ing system
2. Pull the release handle above the 
armrest on the door you wish to open
or
pull the release handle for any door 
twice: to unlock and open the door.To lock>Either use the central locking button 
to lock both doors at once or
>press the individual door lock buttons 
down. In this case, the fuel filler door 
will stay unlocked. To prevent the 
driver from being inadvertently 
locked out of the vehicle, the driver's 
door lock button will not engage as 
long as the door is open.
Persons or animals inside the 
vehicle may be able to lock the 
doors from the inside. For this reason, 
always take the vehicle keys with you 
so that the vehicle can be opened again 
from the outside at any time.< 

Everything from A to Z
163
DSC Dynamic Stability Con-
trol 81
indicator lamp 19, 81
DTC Dynamic Traction Con-
trol 81
indicator lamp 19, 81
Dynamic Brake Control 
(DBC) 19, 115
indicator lamp 19
Dynamic Stability Control 
(DSC) 19, 81
Dynamic Traction Control 
(DTC) 81
indicator lamp 19, 81
E
Easy entry, refer to Entering 
the rear 45
Electric glass sunroof 39
Electric power windows 38
Electrical accessories, fail-
ure 145
Electrical malfunction
automatic transmission 
with Steptronic 69
door lock 31
driver's door 31
fuel filler door 23
glass sunroof 40
luggage compartment 
lid 33Electronic Stability Program 
(ESP), refer to Dynamic 
Stability Control (DSC) 81
Emergency call 146
Emergency operation
doors 31
driver's door 31
fuel filler door 23
glass sunroof 40
Emergency release
luggage compartment lid 
33, 35
Emissions, minimum, refer 
to Energy control 74
Energy control 74
Engine
breaking in 112
data 154
electronics 19
indicator lamp 19
speed 74, 154
starting 59
switching off 61
Engine compartment 124
Engine coolant 128
adding 128Engine oil
adding 127
additives, refer to Adding 
engine oil 127
capacity 157
indicator/warning lamp 19
quality 127
specified oils 127
Engine oil consumption 126
Engine oil level 19
check 126
indicator/warning lamp 18
Engine oil pressure
indicator/warning lamp 18
Engine oil types 127
Engine output, refer to 
Engine data 154
Engine speed 74, 154
Entering the rear 45
Environmentally-friendly 
driving, refer to Energy 
control 74
Equipment range, refer to 
Service and Warranty 
Information Booklet for US 
models/Warranty and Ser-
vice Guide Booklet for 
Canadian models
ESP Electronic Stability Pro-
gram, refer to Dynamic 
Stability Control (DSC) 81
Exterior mirrors 49Eyeglasses 
compartment 101
Eyelets, towing and tow-
starting 149
F
False alarm, refer to Avoid-
ing unintentional 
alarms 37
Fasten safety belts
indicator lamp 18
Fastening the safety belts 46
Fault displays 76
Filling the windshield washer 
reservoir 157
First aid, refer to First-aid 
kit 22
First-aid kit 22
Flashlight 100
Flashlight, refer to 
Rechargeable 
flashlight 100
Flat tire 141
Flat Tire Monitor 82
space-saver spare tire 141
Flat Tire Monitor 82
indicator lamp 18, 19, 83
Fluid reservoir for washer 
systems 126
Folding rear backrest 104
Follow me home lamps 85
OverviewControlsMaintenanceRepairsDataIndex 

Everything from A to ZFootbrake, refer to Braking 
safely 113
Front airbags 51
Front center armrest 100
Front fog lamps 87
indicator lamp 20
Fuel
display 75
quality 24
volume 157
Fuel consumption
display 79
Fuel display, refer to Fuel 
gauge 75
Fuel economy, refer to 
Energy control 74
Fuel filler door 23
release following an elec-
trical malfunction 23
Fuel level indicator, refer to 
Fuel gauge 75
Fuel reserve indicator, refer 
to Fuel gauge 75
Fuel tank capacity 157
Fuses 145
G
Gasoline consumption, refer 
to Average fuel consump-
tion 79
Gasoline, refer to Fuel spec-
ifications 24Gear indicator 65, 69
Gear lever
automatic transmission 
with Steptronic 67
sequential manual gear-
box SMG 63
Gearbox
manual transmission 62
Gearshift lever
manual transmission 62
General driving notes 113
Glass sunroof
closing following an elec-
trical malfunction 40
convenience operation
30, 31
remote control 29, 30
Glass sunroof, electric 39
Glove compartment 99
Grills, refer to Ventilation
90, 94
Gross weight, refer to 
Weights 156
H
Handbrake, refer to Parking 
brake 61
Hands-free system 101
Harman Kardon premium 
sound system 99
Hazard warning flashers 14
Hazard warning triangle 22Head airbags 51
Head restraints 45
Headlamp cleaning system
cleaning headlamps 72
washer fluid 126, 157
Headlamp control, auto-
matic 85
Headlamp flasher 87
indicator lamp 20
Headlamps
bulb replacement 137
care, refer to the Caring 
for your vehicle brochure
Heated mirrors 49
Heated rear window
air conditioning 92
automatic climate 
control 97
Heated seats 48
Heating
exterior mirrors 49
rear window 92, 97
seats 48
Heating and ventilation
90, 94
Heavy loads, refer to Cargo 
loading 107
Height adjustment
seats 42, 44
steering wheel 50
Height, refer to 
Dimensions 155High beams 70, 87
bulb replacement 138
headlamp flasher 87
indicator lamp 20
Holder for
beverages 100, 101
litter bag 101
Hood release 123
Horn 14
Hub cap 142
Hydraulic brake assistant, 
refer to DBC 115
Hydroplaning 113
I
Ice warning 78
Ignition 59
Ignition key 28
positions 59
Ignition lock 59
Imprint 4
Indicator lamps 18 

Everything from A to ZLuggage compartment lid 33
emergency operation 33
emergency release 35
indicator lamp 76
opening from inside the 
vehicle 33
opening from outside 33
remote control 30
securing separately 33
unlocking manually 33
Luggage compartment light-
ing 33
Luggage rack, refer to Roof-
mounted luggage rack 109
Lumbar support 44
M
Maintenance 76, 130
Maintenance system 130
Making telephone calls, 
refer to the telephone 
Owner's Manual
Malfunction
door lock 31
fuel filler door 23
Malfunction displays 76Manual operation
door lock 31
driver's door 31
fuel filler door 23
glass sunroof 40
luggage compartment 
lid 33
Manual transmission 62
Master keys
with remote control 28
MC operation, refer to the 
Owner's Manual for 
Radio/Onboard Computer
MD operation, refer to the 
Owner's Manual for 
Radio/Onboard Computer
Mechanical seats 42
Memory, refer to Seat and 
mirror memory 47
Memory, refer to Vehicle 
Memory, Key Memory 58
Microfilter
air conditioning 93
automatic climate 
control 98
Microphone 101
Mini disc operation, refer to 
the Owner's Manual for 
Radio/Onboard Computer
Mirror
automatic curb monitor 48Mirrors 49
heated 49
memory, refer to Seat and 
mirror memory 47
Mobile Service 147
Modifications, technical, 
refer to For your own 
safety 5
Multifunction steering 
wheel 21
Multifunction switch
turn signal indicator/head-
lamp flasher 70
washer/wiper system 71
N
Navigation system, refer to 
the Owner's Manual for 
Radio/Onboard Computer
Neck restraints, refer to 
Head restraints 45
Nets 100
Nozzles, refer to Ventilation 
90, 94
Nylon rope, refer to Towing 
and tow-starting the vehi-
cle 149
O
OBD interface socket 132
Odometer 74Oil
additives, refer to Adding 
engine oil 127
capacity 157
dipstick 126
quality 127
Oil change interval, refer 
to Service interval 
display 130
Oil change intervals, refer to 
the Service and Warranty 
Information Booklet for US 
models/Warranty and Ser-
vice Guide Booklet for 
Canadian models
Oil consumption 126
Oil dipstick 126
Oil filter change 157
Oil level
checking 126
indicator lamp 18
Oil pressure
indicator lamp 18
OIL SERVICE 76
Oil types 127
Old batteries, refer to Dis-
posal 145
Onboard computer 78
Onboard computer, refer to 
the Owner's Manual for 
Onboard Computer
Onboard tool kit 136